diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index bccb82e51b..ae3110a7d0 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -593,6 +593,9 @@ fillAbuseReportDescription: "通報理由の詳細を記入してください。
 abuseReported: "内容が送信されました。ご報告ありがとうございました。"
 send: "送信"
 abuseMarkAsResolved: "対応済みにする"
+openInNewTab: "新しいタブで開く"
+openInSideView: "サイドビューで開く"
+defaultNavigationBehaviour: "デフォルトのナビゲーション"
 
 _serverDisconnectedBehavior:
   reload: "自動でリロード"
diff --git a/src/client/components/avatar.vue b/src/client/components/avatar.vue
index 627818a8e7..d90607bb8a 100644
--- a/src/client/components/avatar.vue
+++ b/src/client/components/avatar.vue
@@ -2,9 +2,9 @@
 <span class="eiwwqkts" :class="{ cat }" :title="acct(user)" v-if="disableLink" v-user-preview="disablePreview ? undefined : user.id" @click="onClick">
 	<img class="inner" :src="url"/>
 </span>
-<router-link class="eiwwqkts" :class="{ cat }" :to="userPage(user)" :title="acct(user)" :target="target" v-else v-user-preview="disablePreview ? undefined : user.id">
+<MkA class="eiwwqkts" :class="{ cat }" :to="userPage(user)" :title="acct(user)" :target="target" v-else v-user-preview="disablePreview ? undefined : user.id">
 	<img class="inner" :src="url"/>
-</router-link>
+</MkA>
 </template>
 
 <script lang="ts">
diff --git a/src/client/components/channel-preview.vue b/src/client/components/channel-preview.vue
index 705d3b09c4..e5676e5ae9 100644
--- a/src/client/components/channel-preview.vue
+++ b/src/client/components/channel-preview.vue
@@ -1,5 +1,5 @@
 <template>
-<router-link :to="`/channels/${channel.id}`" class="eftoefju _panel" tabindex="-1">
+<MkA :to="`/channels/${channel.id}`" class="eftoefju _panel" tabindex="-1">
 	<div class="banner" v-if="channel.bannerUrl" :style="`background-image: url('${channel.bannerUrl}')`">
 		<div class="fade"></div>
 		<div class="name"><Fa :icon="faSatelliteDish"/> {{ channel.name }}</div>
@@ -30,7 +30,7 @@
 			{{ $t('updatedAt') }}: <MkTime :time="channel.lastNotedAt"/>
 		</span>
 	</footer>
-</router-link>
+</MkA>
 </template>
 
 <script lang="ts">
diff --git a/src/client/components/index.ts b/src/client/components/index.ts
index 6cc06e37c3..92a29ded15 100644
--- a/src/client/components/index.ts
+++ b/src/client/components/index.ts
@@ -1,6 +1,7 @@
 import { App } from 'vue';
 
 import mfm from './misskey-flavored-markdown.vue';
+import a from './ui/a.vue';
 import acct from './acct.vue';
 import avatar from './avatar.vue';
 import emoji from './emoji.vue';
@@ -10,10 +11,10 @@ import time from './time.vue';
 import url from './url.vue';
 import loading from './loading.vue';
 import error from './error.vue';
-import streamIndicator from './stream-indicator.vue';
 
 export default function(app: App) {
 	app.component('Mfm', mfm);
+	app.component('MkA', a);
 	app.component('MkAcct', acct);
 	app.component('MkAvatar', avatar);
 	app.component('MkEmoji', emoji);
@@ -23,5 +24,4 @@ export default function(app: App) {
 	app.component('MkUrl', url);
 	app.component('MkLoading', loading);
 	app.component('MkError', error);
-	app.component('StreamIndicator', streamIndicator);
 }
diff --git a/src/client/components/link.vue b/src/client/components/link.vue
index e0a7f43477..bac49a62ef 100644
--- a/src/client/components/link.vue
+++ b/src/client/components/link.vue
@@ -1,5 +1,5 @@
 <template>
-<component :is="self ? 'router-link' : 'a'" class="xlcxczvw _link" :[attr]="self ? url.substr(local.length) : url" :rel="rel" :target="target"
+<component :is="self ? 'MkA' : 'a'" class="xlcxczvw _link" :[attr]="self ? url.substr(local.length) : url" :rel="rel" :target="target"
 	@mouseover="onMouseover"
 	@mouseleave="onMouseleave"
 	:title="url"
diff --git a/src/client/components/mention.vue b/src/client/components/mention.vue
index 50b43df07b..85f8436a42 100644
--- a/src/client/components/mention.vue
+++ b/src/client/components/mention.vue
@@ -1,11 +1,11 @@
 <template>
-<router-link class="ldlomzub" :class="{ isMe }" :to="url" v-user-preview="canonical" v-if="url.startsWith('/')">
+<MkA class="ldlomzub" :class="{ isMe }" :to="url" v-user-preview="canonical" v-if="url.startsWith('/')">
 	<span class="me" v-if="isMe">{{ $t('you') }}</span>
 	<span class="main">
 		<span class="username">@{{ username }}</span>
 		<span class="host" v-if="(host != localHost) || $store.state.settings.showFullAcct">@{{ toUnicode(host) }}</span>
 	</span>
-</router-link>
+</MkA>
 <a class="ldlomzub" :href="url" target="_blank" rel="noopener" v-else>
 	<span class="main">
 		<span class="username">@{{ username }}</span>
diff --git a/src/client/components/mfm.ts b/src/client/components/mfm.ts
index 791fd1b4e5..7a8ee8b19f 100644
--- a/src/client/components/mfm.ts
+++ b/src/client/components/mfm.ts
@@ -9,8 +9,8 @@ import { concat } from '../../prelude/array';
 import MkFormula from './formula.vue';
 import MkCode from './code.vue';
 import MkGoogle from './google.vue';
+import MkA from './ui/a.vue';
 import { host } from '@/config';
-import { RouterLink } from 'vue-router';
 
 export default defineComponent({
 	props: {
@@ -150,7 +150,7 @@ export default defineComponent({
 				}
 
 				case 'hashtag': {
-					return [h(RouterLink, {
+					return [h(MkA, {
 						key: Math.random(),
 						to: this.isNote ? `/tags/${encodeURIComponent(token.node.props.hashtag)}` : `/explore/tags/${encodeURIComponent(token.node.props.hashtag)}`,
 						style: 'color:var(--hashtag);'
diff --git a/src/client/components/note-header.vue b/src/client/components/note-header.vue
index 3be0ba38fe..1f7a07bac3 100644
--- a/src/client/components/note-header.vue
+++ b/src/client/components/note-header.vue
@@ -1,17 +1,17 @@
 <template>
 <header class="kkwtjztg">
-	<router-link class="name" :to="userPage(note.user)" v-user-preview="note.user.id">
+	<MkA class="name" :to="userPage(note.user)" v-user-preview="note.user.id">
 		<MkUserName :user="note.user"/>
-	</router-link>
+	</MkA>
 	<span class="is-bot" v-if="note.user.isBot">bot</span>
 	<span class="username"><MkAcct :user="note.user"/></span>
 	<span class="admin" v-if="note.user.isAdmin"><Fa :icon="faBookmark"/></span>
 	<span class="moderator" v-if="!note.user.isAdmin && note.user.isModerator"><Fa :icon="farBookmark"/></span>
 	<div class="info">
 		<span class="mobile" v-if="note.viaMobile"><Fa :icon="faMobileAlt"/></span>
-		<router-link class="created-at" :to="notePage(note)">
+		<MkA class="created-at" :to="notePage(note)">
 			<MkTime :time="note.createdAt"/>
-		</router-link>
+		</MkA>
 		<span class="visibility" v-if="note.visibility !== 'public'">
 			<Fa v-if="note.visibility === 'home'" :icon="faHome"/>
 			<Fa v-if="note.visibility === 'followers'" :icon="faUnlock"/>
diff --git a/src/client/components/note.vue b/src/client/components/note.vue
index 85bdb9c6fb..8ddb01f733 100644
--- a/src/client/components/note.vue
+++ b/src/client/components/note.vue
@@ -18,9 +18,9 @@
 		<Fa :icon="faRetweet"/>
 		<i18n-t keypath="renotedBy" tag="span">
 			<template #user>
-				<router-link class="name" :to="userPage(note.user)" v-user-preview="note.userId">
+				<MkA class="name" :to="userPage(note.user)" v-user-preview="note.userId">
 					<MkUserName :user="note.user"/>
-				</router-link>
+				</MkA>
 			</template>
 		</i18n-t>
 		<div class="info">
@@ -48,7 +48,7 @@
 				<div class="content" v-show="appearNote.cw == null || showContent">
 					<div class="text">
 						<span v-if="appearNote.isHidden" style="opacity: 0.5">({{ $t('private') }})</span>
-						<router-link class="reply" v-if="appearNote.replyId" :to="`/notes/${appearNote.replyId}`"><Fa :icon="faReply"/></router-link>
+						<MkA class="reply" v-if="appearNote.replyId" :to="`/notes/${appearNote.replyId}`"><Fa :icon="faReply"/></MkA>
 						<Mfm v-if="appearNote.text" :text="appearNote.text" :author="appearNote.user" :i="$store.state.i" :custom-emojis="appearNote.emojis"/>
 						<a class="rp" v-if="appearNote.renote != null">RN:</a>
 					</div>
@@ -59,7 +59,7 @@
 					<MkUrlPreview v-for="url in urls" :url="url" :key="url" :compact="true" :detail="detail" class="url-preview"/>
 					<div class="renote" v-if="appearNote.renote"><XNotePreview :note="appearNote.renote"/></div>
 				</div>
-				<router-link v-if="appearNote.channel && !inChannel" class="channel" :to="`/channels/${appearNote.channel.id}`"><Fa :icon="faSatelliteDish"/> {{ appearNote.channel.name }}</router-link>
+				<MkA v-if="appearNote.channel && !inChannel" class="channel" :to="`/channels/${appearNote.channel.id}`"><Fa :icon="faSatelliteDish"/> {{ appearNote.channel.name }}</MkA>
 			</div>
 			<footer class="footer">
 				<XReactionsViewer :note="appearNote" ref="reactionsViewer"/>
@@ -91,9 +91,9 @@
 <div v-else class="_panel muted" @click="muted = false">
 	<i18n-t keypath="userSaysSomething" tag="small">
 		<template #name>
-			<router-link class="name" :to="userPage(appearNote.user)" v-user-preview="appearNote.userId">
+			<MkA class="name" :to="userPage(appearNote.user)" v-user-preview="appearNote.userId">
 				<MkUserName :user="appearNote.user"/>
-			</router-link>
+			</MkA>
 		</template>
 	</i18n-t>
 </div>
@@ -144,7 +144,7 @@ export default defineComponent({
 	inject: {
 		inChannel: {
 			default: null
-		}
+		},
 	},
 
 	props: {
@@ -581,11 +581,6 @@ export default defineComponent({
 				});
 
 				menu = [{
-					type: 'link',
-					icon: faInfoCircle,
-					text: this.$t('details'),
-					to: '/notes/' + this.appearNote.id
-				}, null, {
 					icon: faCopy,
 					text: this.$t('copyContent'),
 					action: this.copyContent
diff --git a/src/client/components/notification.vue b/src/client/components/notification.vue
index ab890bbf0f..db6d8ad167 100644
--- a/src/client/components/notification.vue
+++ b/src/client/components/notification.vue
@@ -18,34 +18,34 @@
 	</div>
 	<div class="tail">
 		<header>
-			<router-link v-if="notification.user" class="name" :to="userPage(notification.user)" v-user-preview="notification.user.id"><MkUserName :user="notification.user"/></router-link>
+			<MkA v-if="notification.user" class="name" :to="userPage(notification.user)" v-user-preview="notification.user.id"><MkUserName :user="notification.user"/></MkA>
 			<span v-else>{{ notification.header }}</span>
 			<MkTime :time="notification.createdAt" v-if="withTime"/>
 		</header>
-		<router-link v-if="notification.type === 'reaction'" class="text" :to="notePage(notification.note)" :title="getNoteSummary(notification.note)">
+		<MkA v-if="notification.type === 'reaction'" class="text" :to="notePage(notification.note)" :title="getNoteSummary(notification.note)">
 			<Fa :icon="faQuoteLeft"/>
 			<Mfm :text="getNoteSummary(notification.note)" :plain="true" :nowrap="!full" :custom-emojis="notification.note.emojis"/>
 			<Fa :icon="faQuoteRight"/>
-		</router-link>
-		<router-link v-if="notification.type === 'renote'" class="text" :to="notePage(notification.note)" :title="getNoteSummary(notification.note.renote)">
+		</MkA>
+		<MkA v-if="notification.type === 'renote'" class="text" :to="notePage(notification.note)" :title="getNoteSummary(notification.note.renote)">
 			<Fa :icon="faQuoteLeft"/>
 			<Mfm :text="getNoteSummary(notification.note.renote)" :plain="true" :nowrap="!full" :custom-emojis="notification.note.renote.emojis"/>
 			<Fa :icon="faQuoteRight"/>
-		</router-link>
-		<router-link v-if="notification.type === 'reply'" class="text" :to="notePage(notification.note)" :title="getNoteSummary(notification.note)">
+		</MkA>
+		<MkA v-if="notification.type === 'reply'" class="text" :to="notePage(notification.note)" :title="getNoteSummary(notification.note)">
 			<Mfm :text="getNoteSummary(notification.note)" :plain="true" :nowrap="!full" :custom-emojis="notification.note.emojis"/>
-		</router-link>
-		<router-link v-if="notification.type === 'mention'" class="text" :to="notePage(notification.note)" :title="getNoteSummary(notification.note)">
+		</MkA>
+		<MkA v-if="notification.type === 'mention'" class="text" :to="notePage(notification.note)" :title="getNoteSummary(notification.note)">
 			<Mfm :text="getNoteSummary(notification.note)" :plain="true" :nowrap="!full" :custom-emojis="notification.note.emojis"/>
-		</router-link>
-		<router-link v-if="notification.type === 'quote'" class="text" :to="notePage(notification.note)" :title="getNoteSummary(notification.note)">
+		</MkA>
+		<MkA v-if="notification.type === 'quote'" class="text" :to="notePage(notification.note)" :title="getNoteSummary(notification.note)">
 			<Mfm :text="getNoteSummary(notification.note)" :plain="true" :nowrap="!full" :custom-emojis="notification.note.emojis"/>
-		</router-link>
-		<router-link v-if="notification.type === 'pollVote'" class="text" :to="notePage(notification.note)" :title="getNoteSummary(notification.note)">
+		</MkA>
+		<MkA v-if="notification.type === 'pollVote'" class="text" :to="notePage(notification.note)" :title="getNoteSummary(notification.note)">
 			<Fa :icon="faQuoteLeft"/>
 			<Mfm :text="getNoteSummary(notification.note)" :plain="true" :nowrap="!full" :custom-emojis="notification.note.emojis"/>
 			<Fa :icon="faQuoteRight"/>
-		</router-link>
+		</MkA>
 		<span v-if="notification.type === 'follow'" class="text" style="opacity: 0.6;">{{ $t('youGotNewFollower') }}<div v-if="full"><MkFollowButton :user="notification.user" :full="true"/></div></span>
 		<span v-if="notification.type === 'followRequestAccepted'" class="text" style="opacity: 0.6;">{{ $t('followRequestAccepted') }}</span>
 		<span v-if="notification.type === 'receiveFollowRequest'" class="text" style="opacity: 0.6;">{{ $t('receiveFollowRequest') }}<div v-if="full && !followRequestDone"><button class="_textButton" @click="acceptFollowRequest()">{{ $t('accept') }}</button> | <button class="_textButton" @click="rejectFollowRequest()">{{ $t('reject') }}</button></div></span>
diff --git a/src/client/components/page-preview.vue b/src/client/components/page-preview.vue
index ad1069f53f..95ed8d0e38 100644
--- a/src/client/components/page-preview.vue
+++ b/src/client/components/page-preview.vue
@@ -1,5 +1,5 @@
 <template>
-<router-link :to="`/@${page.user.username}/pages/${page.name}`" class="vhpxefrj" tabindex="-1">
+<MkA :to="`/@${page.user.username}/pages/${page.name}`" class="vhpxefrj" tabindex="-1">
 	<div class="thumbnail" v-if="page.eyeCatchingImage" :style="`background-image: url('${page.eyeCatchingImage.thumbnailUrl}')`"></div>
 	<article>
 		<header>
@@ -11,7 +11,7 @@
 			<p>{{ userName(page.user) }}</p>
 		</footer>
 	</article>
-</router-link>
+</MkA>
 </template>
 
 <script lang="ts">
diff --git a/src/client/components/page-window.vue b/src/client/components/page-window.vue
index 2673b3f8ec..c3ec7db867 100644
--- a/src/client/components/page-window.vue
+++ b/src/client/components/page-window.vue
@@ -1,11 +1,18 @@
 <template>
-<XWindow ref="window" :initial-width="400" :initial-height="500" :can-resize="true" @closed="$emit('closed')">
+<XWindow ref="window"
+	:initial-width="400"
+	:initial-height="500"
+	:can-resize="true"
+	:close-right="true"
+	:contextmenu="contextmenu"
+	@closed="$emit('closed')"
+>
 	<template #header>
 		<XHeader :info="pageInfo" :with-back="false"/>
 	</template>
 	<template #buttons>
-		<button class="_button" @click="expand" v-tooltip="$t('showInPage')"><Fa :icon="faExpandAlt"/></button>
-		<button class="_button" @click="popout" v-tooltip="$t('popout')"><Fa :icon="faExternalLinkAlt"/></button>
+		<button class="_button" @click="back()" v-if="history.length > 0"><Fa :icon="faChevronLeft"/></button>
+		<button class="_button" style="pointer-events: none;" v-else><!-- マージンのバランスを取るためのダミー --></button>
 	</template>
 	<div class="yrolvcoq" style="min-height: 100%; background: var(--bg);">
 		<component :is="component" v-bind="props" :ref="changePage"/>
@@ -14,11 +21,13 @@
 </template>
 
 <script lang="ts">
-import { defineComponent, markRaw } from 'vue';
-import { faExternalLinkAlt, faExpandAlt } from '@fortawesome/free-solid-svg-icons';
+import { defineComponent } from 'vue';
+import { faExternalLinkAlt, faExpandAlt, faLink, faChevronLeft } from '@fortawesome/free-solid-svg-icons';
 import XWindow from '@/components/ui/window.vue';
 import XHeader from '@/ui/_common_/header.vue';
 import { popout } from '@/scripts/popout';
+import copyToClipboard from '@/scripts/copy-to-clipboard';
+import { resolve } from '@/router';
 
 export default defineComponent({
 	components: {
@@ -26,6 +35,14 @@ export default defineComponent({
 		XHeader,
 	},
 
+	provide() {
+		return {
+			navHook: (url) => {
+				this.navigate(url);
+			}
+		};
+	},
+
 	props: {
 		initialUrl: {
 			type: String,
@@ -38,7 +55,7 @@ export default defineComponent({
 		initialProps: {
 			type: Object,
 			required: false,
-			default: {},
+			default: () => {},
 		},
 	},
 
@@ -50,18 +67,39 @@ export default defineComponent({
 			url: this.initialUrl,
 			component: this.initialComponent,
 			props: this.initialProps,
-			faExternalLinkAlt, faExpandAlt,
+			history: [],
+			faChevronLeft,
 		};
 	},
 
-	provide() {
-		return {
-			navHook: (url, component, props) => {
-				this.url = url;
-				this.component = markRaw(component);
-				this.props = props;
-			}
-		};
+	computed: {
+		contextmenu() {
+			return [{
+				type: 'label',
+				text: this.url,
+			}, {
+				icon: faExpandAlt,
+				text: this.$t('showInPage'),
+				action: this.expand
+			}, {
+				icon: faExternalLinkAlt,
+				text: this.$t('popout'),
+				action: this.popout
+			}, null, {
+				icon: faExternalLinkAlt,
+				text: this.$t('openInNewTab'),
+				action: () => {
+					window.open(this.url, '_blank');
+					this.$refs.window.close();
+				}
+			}, {
+				icon: faLink,
+				text: this.$t('copyLink'),
+				action: () => {
+					copyToClipboard(this.url);
+				}
+			}];
+		},
 	},
 
 	methods: {
@@ -72,6 +110,18 @@ export default defineComponent({
 			}
 		},
 
+		navigate(url, record = true) {
+			if (record) this.history.push(this.url);
+			this.url = url;
+			const { component, props } = resolve(url);
+			this.component = component;
+			this.props = props;
+		},
+
+		back() {
+			this.navigate(this.history.pop(), false);
+		},
+
 		expand() {
 			this.$router.push(this.url);
 			this.$refs.window.close();
diff --git a/src/client/components/sidebar.vue b/src/client/components/sidebar.vue
index 383378241b..3ceb1f9b8d 100644
--- a/src/client/components/sidebar.vue
+++ b/src/client/components/sidebar.vue
@@ -17,12 +17,12 @@
 				<button class="item _button index active" @click="top()" v-if="$route.name === 'index'">
 					<Fa :icon="faHome" fixed-width/><span class="text">{{ $store.getters.isSignedIn ? $t('timeline') : $t('home') }}</span>
 				</button>
-				<router-link class="item index" active-class="active" to="/" exact v-else>
+				<MkA class="item index" active-class="active" to="/" exact v-else>
 					<Fa :icon="faHome" fixed-width/><span class="text">{{ $store.getters.isSignedIn ? $t('timeline') : $t('home') }}</span>
-				</router-link>
+				</MkA>
 				<template v-for="item in menu">
 					<div v-if="item === '-'" class="divider"></div>
-					<component v-else-if="menuDef[item] && (menuDef[item].show !== false)" :is="menuDef[item].to ? 'router-link' : 'button'" class="item _button" :class="item" active-class="active" v-on="menuDef[item].action ? { click: menuDef[item].action } : {}" :to="menuDef[item].to">
+					<component v-else-if="menuDef[item] && (menuDef[item].show !== false)" :is="menuDef[item].to ? 'MkA' : 'button'" class="item _button" :class="item" active-class="active" v-on="menuDef[item].action ? { click: menuDef[item].action } : {}" :to="menuDef[item].to">
 						<Fa :icon="menuDef[item].icon" fixed-width/><span class="text">{{ $t(menuDef[item].title) }}</span>
 						<i v-if="menuDef[item].indicated"><Fa :icon="faCircle"/></i>
 					</component>
@@ -35,9 +35,9 @@
 					<Fa :icon="faEllipsisH" fixed-width/><span class="text">{{ $t('more') }}</span>
 					<i v-if="otherNavItemIndicated"><Fa :icon="faCircle"/></i>
 				</button>
-				<router-link class="item" active-class="active" to="/settings">
+				<MkA class="item" active-class="active" to="/settings">
 					<Fa :icon="faCog" fixed-width/><span class="text">{{ $t('settings') }}</span>
-				</router-link>
+				</MkA>
 			</div>
 		</nav>
 	</transition>
diff --git a/src/client/components/sub-note-content.vue b/src/client/components/sub-note-content.vue
index 0bef072fe4..cb65a76495 100644
--- a/src/client/components/sub-note-content.vue
+++ b/src/client/components/sub-note-content.vue
@@ -3,9 +3,9 @@
 	<div class="body">
 		<span v-if="note.isHidden" style="opacity: 0.5">({{ $t('private') }})</span>
 		<span v-if="note.deletedAt" style="opacity: 0.5">({{ $t('deleted') }})</span>
-		<router-link class="reply" v-if="note.replyId" :to="`/notes/${note.replyId}`"><Fa :icon="faReply"/></router-link>
+		<MkA class="reply" v-if="note.replyId" :to="`/notes/${note.replyId}`"><Fa :icon="faReply"/></MkA>
 		<Mfm v-if="note.text" :text="note.text" :author="note.user" :i="$store.state.i" :custom-emojis="note.emojis"/>
-		<router-link class="rp" v-if="note.renoteId" :to="`/notes/${note.renoteId}`">RN: ...</router-link>
+		<MkA class="rp" v-if="note.renoteId" :to="`/notes/${note.renoteId}`">RN: ...</MkA>
 	</div>
 	<details v-if="note.files.length > 0">
 		<summary>({{ $t('withNFiles', { n: note.files.length }) }})</summary>
diff --git a/src/client/components/ui/a.vue b/src/client/components/ui/a.vue
new file mode 100644
index 0000000000..dce99ef676
--- /dev/null
+++ b/src/client/components/ui/a.vue
@@ -0,0 +1,104 @@
+<template>
+<a :href="to" :class="active ? activeClass : null" @click.prevent="nav" @contextmenu.prevent.stop="onContextmenu">
+	<slot></slot>
+</a>
+</template>
+
+<script lang="ts">
+import { defineComponent } from 'vue';
+import { faExpandAlt, faColumns, faExternalLinkAlt, faLink, faWindowMaximize } from '@fortawesome/free-solid-svg-icons';
+import * as os from '@/os';
+import copyToClipboard from '@/scripts/copy-to-clipboard';
+import { router } from '@/router';
+import { deckmode } from '@/config';
+
+export default defineComponent({
+	inject: {
+		navHook: {
+			default: null
+		},
+		sideViewHook: {
+			default: null
+		}
+	},
+
+	props: {
+		to: {
+			type: String,
+			required: true,
+		},
+		activeClass: {
+			type: String,
+			required: false,
+		},
+	},
+
+	computed: {
+		active() {
+			if (this.activeClass == null) return false;
+			const resolved = router.resolve(this.to);
+			if (resolved.path == this.$route.path) return true;
+			if (resolved.name == null) return false;
+			if (this.$route.name == null) return false;
+			return resolved.name == this.$route.name;
+		}
+	},
+
+	methods: {
+		onContextmenu(e) {
+			if (window.getSelection().toString() !== '') return;
+			os.contextMenu([{
+				type: 'label',
+				text: this.to,
+			}, {
+				icon: faWindowMaximize,
+				text: this.$t('openInWindow'),
+				action: () => {
+					os.pageWindow(this.to);
+				}
+			}, !this.navHook && this.sideViewHook ? {
+				icon: faColumns,
+				text: this.$t('openInSideView'),
+				action: () => {
+					this.sideViewHook(this.to);
+				}
+			} : undefined, {
+				icon: faExpandAlt,
+				text: this.$t('showInPage'),
+				action: () => {
+					this.$router.push(this.to);
+				}
+			}, null, {
+				icon: faExternalLinkAlt,
+				text: this.$t('openInNewTab'),
+				action: () => {
+					window.open(this.to, '_blank');
+				}
+			}, {
+				icon: faLink,
+				text: this.$t('copyLink'),
+				action: () => {
+					copyToClipboard(this.to);
+				}
+			}], e);
+		},
+
+		nav() {
+			if (this.navHook) {
+				this.navHook(this.to);
+			} else {
+				if (this.$store.state.device.defaultSideView && this.sideViewHook && this.to !== '/') {
+					this.sideViewHook(this.to);
+					return;
+				}
+				if (this.$store.state.device.deckNavWindow && deckmode && this.to !== '/') {
+					os.pageWindow(this.to);
+					return;
+				}
+
+				this.$router.push(this.to);
+			}
+		}
+	}
+});
+</script>
diff --git a/src/client/components/ui/context-menu.vue b/src/client/components/ui/context-menu.vue
index 98586cf3fe..3a11589e8a 100644
--- a/src/client/components/ui/context-menu.vue
+++ b/src/client/components/ui/context-menu.vue
@@ -1,5 +1,5 @@
 <template>
-<div class="nvlagfpb">
+<div class="nvlagfpb" @contextmenu.prevent.stop="() => {}">
 	<MkMenu :items="items" @close="$emit('closed')" class="_popup _shadow" :align="'left'"/>
 </div>
 </template>
diff --git a/src/client/components/ui/menu.vue b/src/client/components/ui/menu.vue
index 5e74828c20..9e4e319c8a 100644
--- a/src/client/components/ui/menu.vue
+++ b/src/client/components/ui/menu.vue
@@ -12,12 +12,12 @@
 		<span v-else-if="item.type === 'pending'" :tabindex="i" class="pending item">
 			<span><MkEllipsis/></span>
 		</span>
-		<router-link v-else-if="item.type === 'link'" :to="item.to" @click.passive="close()" :tabindex="i" class="_button item">
+		<MkA v-else-if="item.type === 'link'" :to="item.to" @click.passive="close()" :tabindex="i" class="_button item">
 			<Fa v-if="item.icon" :icon="item.icon" fixed-width/>
 			<MkAvatar v-if="item.avatar" :user="item.avatar" class="avatar"/>
 			<span>{{ item.text }}</span>
 			<i v-if="item.indicate"><Fa :icon="faCircle"/></i>
-		</router-link>
+		</MkA>
 		<a v-else-if="item.type === 'a'" :href="item.href" :target="item.target" :download="item.download" @click="close()" :tabindex="i" class="_button item">
 			<Fa v-if="item.icon" :icon="item.icon" fixed-width/>
 			<span>{{ item.text }}</span>
diff --git a/src/client/components/ui/radio.vue b/src/client/components/ui/radio.vue
index 8f2b843ee6..890ff08751 100644
--- a/src/client/components/ui/radio.vue
+++ b/src/client/components/ui/radio.vue
@@ -51,7 +51,7 @@ export default defineComponent({
 .novjtctn {
 	position: relative;
 	display: inline-block;
-	margin: 0 32px 0 0;
+	margin: 16px 32px 0 0;
 	cursor: pointer;
 	transition: all 0.3s;
 
diff --git a/src/client/components/ui/window.vue b/src/client/components/ui/window.vue
index d545ac4827..4c90ab9c8d 100644
--- a/src/client/components/ui/window.vue
+++ b/src/client/components/ui/window.vue
@@ -2,14 +2,16 @@
 <transition :name="$store.state.device.animation ? 'window' : ''" appear @after-leave="$emit('closed')">
 	<div class="ebkgocck" v-if="showing">
 		<div class="body _popup _shadow _narrow_" @mousedown="onBodyMousedown" @keydown="onKeydown">
-			<div class="header">
-				<button class="_button" @click="close()"><Fa :icon="faTimes"/></button>
+			<div class="header" @contextmenu.prevent.stop="onContextmenu">
+				<slot v-if="closeRight" name="buttons"><button class="_button" style="pointer-events: none;"></button></slot>
+				<button v-else class="_button" @click="close()"><Fa :icon="faTimes"/></button>
+
 				<span class="title" @mousedown.prevent="onHeaderMousedown" @touchstart.prevent="onHeaderMousedown">
 					<slot name="header"></slot>
 				</span>
-				<slot name="buttons">
-					<button class="_button" style="pointer-events: none;"></button>
-				</slot>
+
+				<button v-if="closeRight" class="_button" @click="close()"><Fa :icon="faTimes"/></button>
+				<slot v-else name="buttons"><button class="_button" style="pointer-events: none;"></button></slot>
 			</div>
 			<div class="body" v-if="padding">
 				<div class="_section">
@@ -85,6 +87,15 @@ export default defineComponent({
 			required: false,
 			default: false,
 		},
+		closeRight: {
+			type: Boolean,
+			required: false,
+			default: false,
+		},
+		contextmenu: {
+			type: Array,
+			required: false,
+		}
 	},
 
 	emits: ['closed'],
@@ -129,6 +140,12 @@ export default defineComponent({
 			}
 		},
 
+		onContextmenu(e) {
+			if (this.contextmenu) {
+				os.contextMenu(this.contextmenu, e);
+			}
+		},
+
 		// 最前面へ移動
 		top() {
 			let z = 0;
diff --git a/src/client/components/url-preview.vue b/src/client/components/url-preview.vue
index df02698b5d..55872113be 100644
--- a/src/client/components/url-preview.vue
+++ b/src/client/components/url-preview.vue
@@ -8,7 +8,7 @@
 </div>
 <div v-else class="mk-url-preview" v-size="{ max: [400, 350] }">
 	<transition name="zoom" mode="out-in">
-		<component :is="self ? 'router-link' : 'a'" :class="{ compact }" :[attr]="self ? url.substr(local.length) : url" rel="nofollow noopener" :target="target" :title="url" v-if="!fetching">
+		<component :is="self ? 'MkA' : 'a'" :class="{ compact }" :[attr]="self ? url.substr(local.length) : url" rel="nofollow noopener" :target="target" :title="url" v-if="!fetching">
 			<div class="thumbnail" v-if="thumbnail" :style="`background-image: url('${thumbnail}')`">
 				<button class="_button" v-if="!playerEnabled && player.url" @click.prevent="playerEnabled = true" :title="$t('enablePlayer')"><Fa :icon="faPlayCircle"/></button>
 			</div>
diff --git a/src/client/components/url.vue b/src/client/components/url.vue
index 649ce5fa24..ceb0381f87 100644
--- a/src/client/components/url.vue
+++ b/src/client/components/url.vue
@@ -1,5 +1,5 @@
 <template>
-<component :is="self ? 'router-link' : 'a'" class="ieqqeuvs _link" :[attr]="self ? url.substr(local.length) : url" :rel="rel" :target="target"
+<component :is="self ? 'MkA' : 'a'" class="ieqqeuvs _link" :[attr]="self ? url.substr(local.length) : url" :rel="rel" :target="target"
 	@mouseover="onMouseover"
 	@mouseleave="onMouseleave"
 >
diff --git a/src/client/components/user-info.vue b/src/client/components/user-info.vue
index 893747b7c4..09736b1a2c 100644
--- a/src/client/components/user-info.vue
+++ b/src/client/components/user-info.vue
@@ -3,7 +3,7 @@
 	<div class="banner" :style="user.bannerUrl ? `background-image: url(${user.bannerUrl})` : ''"></div>
 	<MkAvatar class="avatar" :user="user" :disable-preview="true"/>
 	<div class="title">
-		<router-link class="name" :to="userPage(user)"><MkUserName :user="user" :nowrap="false"/></router-link>
+		<MkA class="name" :to="userPage(user)"><MkUserName :user="user" :nowrap="false"/></MkA>
 		<p class="username"><MkAcct :user="user"/></p>
 	</div>
 	<div class="description">
diff --git a/src/client/components/user-preview.vue b/src/client/components/user-preview.vue
index d1a11dc790..d258489860 100644
--- a/src/client/components/user-preview.vue
+++ b/src/client/components/user-preview.vue
@@ -5,7 +5,7 @@
 			<div class="banner" :style="user.bannerUrl ? `background-image: url(${user.bannerUrl})` : ''"></div>
 			<MkAvatar class="avatar" :user="user" :disable-preview="true"/>
 			<div class="title">
-				<router-link class="name" :to="userPage(user)"><MkUserName :user="user" :nowrap="false"/></router-link>
+				<MkA class="name" :to="userPage(user)"><MkUserName :user="user" :nowrap="false"/></MkA>
 				<p class="username"><MkAcct :user="user"/></p>
 			</div>
 			<div class="description">
diff --git a/src/client/components/users-dialog.vue b/src/client/components/users-dialog.vue
index c8ca93703d..f2e8ec480e 100644
--- a/src/client/components/users-dialog.vue
+++ b/src/client/components/users-dialog.vue
@@ -6,13 +6,13 @@
 	</div>
 
 	<div class="users">
-		<router-link v-for="item in items" class="user" :key="item.id" :to="userPage(extract ? extract(item) : item)">
+		<MkA v-for="item in items" class="user" :key="item.id" :to="userPage(extract ? extract(item) : item)">
 			<MkAvatar :user="extract ? extract(item) : item" class="avatar" :disable-link="true"/>
 			<div class="body">
 				<MkUserName :user="extract ? extract(item) : item" class="name"/>
 				<MkAcct :user="extract ? extract(item) : item" class="acct"/>
 			</div>
-		</router-link>
+		</MkA>
 	</div>
 	<button class="more _button" v-appear="$store.state.device.enableInfiniteScroll ? fetchMore : null" @click="fetchMore" v-show="more" :disabled="moreFetching">
 		<template v-if="!moreFetching">{{ $t('loadMore') }}</template>
diff --git a/src/client/init.ts b/src/client/init.ts
index 4a08f09997..86991b69e3 100644
--- a/src/client/init.ts
+++ b/src/client/init.ts
@@ -4,14 +4,13 @@
 
 import '@/style.scss';
 
-import { createApp } from 'vue';
+import { createApp, defineAsyncComponent } from 'vue';
 import { FontAwesomeIcon } from '@fortawesome/vue-fontawesome';
 
-import Root from './root.vue';
 import widgets from './widgets';
 import directives from './directives';
 import components from '@/components';
-import { version, apiUrl } from '@/config';
+import { version, apiUrl, deckmode } from '@/config';
 import { store } from './store';
 import { router } from './router';
 import { applyTheme } from '@/scripts/theme';
@@ -152,7 +151,12 @@ store.dispatch('instance/fetch').then(() => {
 
 stream.init(store.state.i);
 
-const app = createApp(Root);
+const app = createApp(await (
+	window.location.search === '?zen' ? import('@/ui/zen.vue') :
+	!store.getters.isSignedIn         ? import('@/ui/visitor.vue') :
+	deckmode                          ? import('@/ui/deck.vue') :
+	import('@/ui/default.vue')
+).then(x => x.default));
 
 if (_DEV_) {
 	app.config.performance = true;
diff --git a/src/client/os.ts b/src/client/os.ts
index 3241f82e5d..daff26efa2 100644
--- a/src/client/os.ts
+++ b/src/client/os.ts
@@ -5,6 +5,7 @@ import { store } from '@/store';
 import { apiUrl } from '@/config';
 import MkPostFormDialog from '@/components/post-form-dialog.vue';
 import MkWaitingDialog from '@/components/waiting-dialog.vue';
+import { resolve } from '@/router';
 
 const ua = navigator.userAgent.toLowerCase();
 export const isMobile = /mobile|iphone|ipad|android/.test(ua);
@@ -162,7 +163,8 @@ export function popup(component: Component | typeof import('*.vue'), props: Reco
 	};
 }
 
-export function pageWindow(url: string, component: Component | typeof import('*.vue'), props: Record<string, any>) {
+export function pageWindow(url: string) {
+	const { component, props } = resolve(url);
 	popup(defineAsyncComponent(() => import('@/components/page-window.vue')), {
 		initialUrl: url,
 		initialComponent: markRaw(component),
diff --git a/src/client/pages/docs.vue b/src/client/pages/docs.vue
index ea3e16df95..245dff6b57 100644
--- a/src/client/pages/docs.vue
+++ b/src/client/pages/docs.vue
@@ -4,7 +4,7 @@
 		<div class="_content">
 			<ul>
 				<li v-for="doc in docs" :key="doc.path">
-					<router-link :to="`/docs/${doc.path}`">{{ doc.title }}</router-link>
+					<MkA :to="`/docs/${doc.path}`">{{ doc.title }}</MkA>
 				</li>
 			</ul>
 		</div>
diff --git a/src/client/pages/explore.vue b/src/client/pages/explore.vue
index cf191a7481..c7378e0ddc 100644
--- a/src/client/pages/explore.vue
+++ b/src/client/pages/explore.vue
@@ -38,8 +38,8 @@
 			<template #header><Fa :icon="faHashtag" fixed-width style="margin-right: 0.5em;"/>{{ $t('popularTags') }}</template>
 
 			<div class="vxjfqztj">
-				<router-link v-for="tag in tagsLocal" :to="`/explore/tags/${tag.tag}`" :key="'local:' + tag.tag" class="local">{{ tag.tag }}</router-link>
-				<router-link v-for="tag in tagsRemote" :to="`/explore/tags/${tag.tag}`" :key="'remote:' + tag.tag">{{ tag.tag }}</router-link>
+				<MkA v-for="tag in tagsLocal" :to="`/explore/tags/${tag.tag}`" :key="'local:' + tag.tag" class="local">{{ tag.tag }}</MkA>
+				<MkA v-for="tag in tagsRemote" :to="`/explore/tags/${tag.tag}`" :key="'remote:' + tag.tag">{{ tag.tag }}</MkA>
 			</div>
 		</MkFolder>
 
diff --git a/src/client/pages/follow-requests.vue b/src/client/pages/follow-requests.vue
index 86e409ebbd..9f67a8a9e5 100644
--- a/src/client/pages/follow-requests.vue
+++ b/src/client/pages/follow-requests.vue
@@ -12,7 +12,7 @@
 				<MkAvatar class="avatar" :user="req.follower"/>
 				<div class="body">
 					<div class="name">
-						<router-link class="name" :to="userPage(req.follower)" v-user-preview="req.follower.id"><MkUserName :user="req.follower"/></router-link>
+						<MkA class="name" :to="userPage(req.follower)" v-user-preview="req.follower.id"><MkUserName :user="req.follower"/></MkA>
 						<p class="acct">@{{ acct(req.follower) }}</p>
 					</div>
 					<div class="description" v-if="req.follower.description" :title="req.follower.description">
diff --git a/src/client/pages/messaging/index.vue b/src/client/pages/messaging/index.vue
index 07b1cbab83..f62a33b866 100644
--- a/src/client/pages/messaging/index.vue
+++ b/src/client/pages/messaging/index.vue
@@ -4,13 +4,12 @@
 		<MkButton @click="start" primary class="start"><Fa :icon="faPlus"/> {{ $t('startMessaging') }}</MkButton>
 
 		<div class="history" v-if="messages.length > 0">
-			<router-link v-for="(message, i) in messages"
+			<MkA v-for="(message, i) in messages"
 				class="message _panel"
 				:class="{ isMe: isMe(message), isRead: message.groupId ? message.reads.includes($store.state.i.id) : message.isRead }"
 				:to="message.groupId ? `/my/messaging/group/${message.groupId}` : `/my/messaging/${getAcct(isMe(message) ? message.recipient : message.user)}`"
 				:data-index="i"
 				:key="message.id"
-				@click.prevent="go(message)"
 			>
 				<div>
 					<MkAvatar class="avatar" :user="message.groupId ? message.user : isMe(message) ? message.recipient : message.user"/>
@@ -27,7 +26,7 @@
 						<p class="text"><span class="me" v-if="isMe(message)">{{ $t('you') }}:</span>{{ message.text }}</p>
 					</div>
 				</div>
-			</router-link>
+			</MkA>
 		</div>
 		<div class="_fullinfo" v-if="!fetching && messages.length == 0">
 			<img src="https://xn--931a.moe/assets/info.jpg" class="_ghost"/>
@@ -90,18 +89,6 @@ export default defineComponent({
 	},
 
 	methods: {
-		go(message) {
-			const url = message.groupId ? `/my/messaging/group/${message.groupId}` : `/my/messaging/${getAcct(this.isMe(message) ? message.recipient : message.user)}`;
-			if (this.navHook) {
-				this.navHook(url, defineAsyncComponent(() => import('@/pages/messaging/messaging-room.vue')), {
-					userAcct: message.groupId ? null : getAcct(this.isMe(message) ? message.recipient : message.user),
-					groupId: message.groupId
-				});
-			} else {
-				this.$router.push(url);
-			}
-		},
-
 		getAcct,
 
 		isMe(message) {
diff --git a/src/client/pages/messaging/messaging-room.vue b/src/client/pages/messaging/messaging-room.vue
index 4210b8cf89..4aca8bdabf 100644
--- a/src/client/pages/messaging/messaging-room.vue
+++ b/src/client/pages/messaging/messaging-room.vue
@@ -317,7 +317,7 @@ const Component = defineComponent({
 				text: this.$t('openInWindow'),
 				icon: faWindowMaximize,
 				action: () => {
-					os.pageWindow(url, Component, this.$props);
+					os.pageWindow(url);
 					this.$router.back();
 				},
 			}, this.inWindow ? undefined : {
diff --git a/src/client/pages/my-groups/index.vue b/src/client/pages/my-groups/index.vue
index f05226faaf..e384dfc363 100644
--- a/src/client/pages/my-groups/index.vue
+++ b/src/client/pages/my-groups/index.vue
@@ -10,7 +10,7 @@
 
 			<MkPagination :pagination="ownedPagination" #default="{items}" ref="owned">
 				<div class="_card" v-for="group in items" :key="group.id">
-					<div class="_title"><router-link :to="`/my/groups/${ group.id }`" class="_link">{{ group.name }}</router-link></div>
+					<div class="_title"><MkA :to="`/my/groups/${ group.id }`" class="_link">{{ group.name }}</MkA></div>
 					<div class="_content"><MkAvatars :user-ids="group.userIds"/></div>
 				</div>
 			</MkPagination>
diff --git a/src/client/pages/my-lists/index.vue b/src/client/pages/my-lists/index.vue
index 5e29436ede..9d0e192286 100644
--- a/src/client/pages/my-lists/index.vue
+++ b/src/client/pages/my-lists/index.vue
@@ -4,7 +4,7 @@
 
 	<MkPagination :pagination="pagination" #default="{items}" class="lists _content" ref="list">
 		<div class="list _panel" v-for="(list, i) in items" :key="list.id">
-			<router-link :to="`/my/lists/${ list.id }`">{{ list.name }}</router-link>
+			<MkA :to="`/my/lists/${ list.id }`">{{ list.name }}</MkA>
 		</div>
 	</MkPagination>
 </div>
diff --git a/src/client/pages/note.vue b/src/client/pages/note.vue
index cd31ccc338..a458d6c063 100644
--- a/src/client/pages/note.vue
+++ b/src/client/pages/note.vue
@@ -42,6 +42,12 @@ export default defineComponent({
 		MkRemoteCaution,
 		MkButton,
 	},
+	props: {
+		noteId: {
+			type: String,
+			required: true
+		}
+	},
 	data() {
 		return {
 			INFO: computed(() => this.note ? {
@@ -77,7 +83,7 @@ export default defineComponent({
 		};
 	},
 	watch: {
-		$route: 'fetch'
+		noteId: 'fetch'
 	},
 	created() {
 		this.fetch();
@@ -86,7 +92,7 @@ export default defineComponent({
 		fetch() {
 			Progress.start();
 			os.api('notes/show', {
-				noteId: this.$route.params.note
+				noteId: this.noteId
 			}).then(note => {
 				Promise.all([
 					os.api('users/notes', {
diff --git a/src/client/pages/page-editor/page-editor.vue b/src/client/pages/page-editor/page-editor.vue
index 363f46c34b..cd033219f0 100644
--- a/src/client/pages/page-editor/page-editor.vue
+++ b/src/client/pages/page-editor/page-editor.vue
@@ -12,7 +12,7 @@
 			</header>
 
 			<section>
-				<router-link class="view" v-if="pageId" :to="`/@${ author.username }/pages/${ currentName }`"><Fa :icon="faExternalLinkSquareAlt"/> {{ $t('_pages.viewPage') }}</router-link>
+				<MkA class="view" v-if="pageId" :to="`/@${ author.username }/pages/${ currentName }`"><Fa :icon="faExternalLinkSquareAlt"/> {{ $t('_pages.viewPage') }}</MkA>
 
 				<MkInput v-model:value="title">
 					<span>{{ $t('_pages.title') }}</span>
diff --git a/src/client/pages/page.vue b/src/client/pages/page.vue
index eb470fdc19..e8a8a6bdfd 100644
--- a/src/client/pages/page.vue
+++ b/src/client/pages/page.vue
@@ -20,9 +20,9 @@
 	</div>
 	<div class="_section links">
 		<div class="_content">
-			<router-link :to="`./${page.name}/view-source`" class="link">{{ $t('_pages.viewSource') }}</router-link>
+			<MkA :to="`./${page.name}/view-source`" class="link">{{ $t('_pages.viewSource') }}</MkA>
 			<template v-if="$store.getters.isSignedIn && $store.state.i.id === page.userId">
-				<router-link :to="`/my/pages/edit/${page.id}`" class="link">{{ $t('_pages.editThisPage') }}</router-link>
+				<MkA :to="`/my/pages/edit/${page.id}`" class="link">{{ $t('_pages.editThisPage') }}</MkA>
 				<button v-if="$store.state.i.pinnedPageId === page.id" @click="pin(false)" class="link _textButton">{{ $t('unpin') }}</button>
 				<button v-else @click="pin(true)" class="link _textButton">{{ $t('pin') }}</button>
 			</template>
diff --git a/src/client/pages/settings/general.vue b/src/client/pages/settings/general.vue
index 80152c5e6a..d61d8620e7 100644
--- a/src/client/pages/settings/general.vue
+++ b/src/client/pages/settings/general.vue
@@ -2,6 +2,10 @@
 <div class="_section">
 	<section class="_card _vMargin">
 		<div class="_title"><Fa :icon="faCog"/> {{ $t('general') }}</div>
+		<div class="_content">
+			<div>{{ $t('defaultNavigationBehaviour') }}</div>
+			<MkSwitch v-model:value="defaultSideView">{{ $t('openInSideView') }}</MkSwitch>
+		</div>
 		<div class="_content">
 			<div>{{ $t('whenServerDisconnected') }}</div>
 			<MkRadio v-model="serverDisconnectedBehavior" value="reload">{{ $t('_serverDisconnectedBehavior.reload') }}</MkRadio>
@@ -51,6 +55,10 @@
 
 	<section class="_card _vMargin">
 		<div class="_title"><Fa :icon="faColumns"/> {{ $t('deck') }}</div>
+		<div class="_content">
+			<div>{{ $t('defaultNavigationBehaviour') }}</div>
+			<MkSwitch v-model:value="deckNavWindow">{{ $t('openInWindow') }}</MkSwitch>
+		</div>
 		<div class="_content">
 			<MkSwitch v-model:value="deckAlwaysShowMainColumn">
 				{{ $t('_deck.alwaysShowMainColumn') }}
@@ -146,6 +154,16 @@ export default defineComponent({
 			set(value) { this.$store.commit('device/set', { key: 'showFixedPostForm', value }); }
 		},
 
+		defaultSideView: {
+			get() { return this.$store.state.device.defaultSideView; },
+			set(value) { this.$store.commit('device/set', { key: 'defaultSideView', value }); }
+		},
+
+		deckNavWindow: {
+			get() { return this.$store.state.device.deckNavWindow; },
+			set(value) { this.$store.commit('device/set', { key: 'deckNavWindow', value }); }
+		},
+
 		chatOpenBehavior: {
 			get() { return this.$store.state.device.chatOpenBehavior; },
 			set(value) { this.$store.commit('device/set', { key: 'chatOpenBehavior', value }); }
diff --git a/src/client/pages/settings/index.vue b/src/client/pages/settings/index.vue
index 4ca30ee686..1bffa9c0af 100644
--- a/src/client/pages/settings/index.vue
+++ b/src/client/pages/settings/index.vue
@@ -1,52 +1,57 @@
 <template>
 <div class="vvcocwet" :class="{ wide: !narrow }" ref="el">
-	<div class="nav" v-if="!narrow || $route.name === 'settings'">
+	<div class="nav" v-if="!narrow || page == null">
 		<div class="menu">
 			<div class="label">{{ $t('basicSettings') }}</div>
-			<router-link class="item" replace to="/settings/profile"><Fa :icon="faUser" fixed-width class="icon"/>{{ $t('profile') }}</router-link>
-			<router-link class="item" replace to="/settings/privacy"><Fa :icon="faLockOpen" fixed-width class="icon"/>{{ $t('privacy') }}</router-link>
-			<router-link class="item" replace to="/settings/reaction"><Fa :icon="faLaugh" fixed-width class="icon"/>{{ $t('reaction') }}</router-link>
-			<router-link class="item" replace to="/settings/notifications"><Fa :icon="faBell" fixed-width class="icon"/>{{ $t('notifications') }}</router-link>
-			<router-link class="item" replace to="/settings/integration"><Fa :icon="faShareAlt" fixed-width class="icon"/>{{ $t('integration') }}</router-link>
-			<router-link class="item" replace to="/settings/security"><Fa :icon="faLock" fixed-width class="icon"/>{{ $t('security') }}</router-link>
+			<MkA class="item" :class="{ active: page === 'profile' }" replace to="/settings/profile"><Fa :icon="faUser" fixed-width class="icon"/>{{ $t('profile') }}</MkA>
+			<MkA class="item" :class="{ active: page === 'privacy' }" replace to="/settings/privacy"><Fa :icon="faLockOpen" fixed-width class="icon"/>{{ $t('privacy') }}</MkA>
+			<MkA class="item" :class="{ active: page === 'reaction' }" replace to="/settings/reaction"><Fa :icon="faLaugh" fixed-width class="icon"/>{{ $t('reaction') }}</MkA>
+			<MkA class="item" :class="{ active: page === 'notifications' }" replace to="/settings/notifications"><Fa :icon="faBell" fixed-width class="icon"/>{{ $t('notifications') }}</MkA>
+			<MkA class="item" :class="{ active: page === 'integration' }" replace to="/settings/integration"><Fa :icon="faShareAlt" fixed-width class="icon"/>{{ $t('integration') }}</MkA>
+			<MkA class="item" :class="{ active: page === 'security' }" replace to="/settings/security"><Fa :icon="faLock" fixed-width class="icon"/>{{ $t('security') }}</MkA>
 		</div>
 		<div class="menu">
 			<div class="label">{{ $t('clientSettings') }}</div>
-			<router-link class="item" replace to="/settings/general"><Fa :icon="faCogs" fixed-width class="icon"/>{{ $t('general') }}</router-link>
-			<router-link class="item" replace to="/settings/theme"><Fa :icon="faPalette" fixed-width class="icon"/>{{ $t('theme') }}</router-link>
-			<router-link class="item" replace to="/settings/sidebar"><Fa :icon="faListUl" fixed-width class="icon"/>{{ $t('sidebar') }}</router-link>
-			<router-link class="item" replace to="/settings/sounds"><Fa :icon="faMusic" fixed-width class="icon"/>{{ $t('sounds') }}</router-link>
-			<router-link class="item" replace to="/settings/plugins"><Fa :icon="faPlug" fixed-width class="icon"/>{{ $t('plugins') }}</router-link>
+			<MkA class="item" :class="{ active: page === 'general' }" replace to="/settings/general"><Fa :icon="faCogs" fixed-width class="icon"/>{{ $t('general') }}</MkA>
+			<MkA class="item" :class="{ active: page === 'theme' }" replace to="/settings/theme"><Fa :icon="faPalette" fixed-width class="icon"/>{{ $t('theme') }}</MkA>
+			<MkA class="item" :class="{ active: page === 'sidebar' }" replace to="/settings/sidebar"><Fa :icon="faListUl" fixed-width class="icon"/>{{ $t('sidebar') }}</MkA>
+			<MkA class="item" :class="{ active: page === 'sounds' }" replace to="/settings/sounds"><Fa :icon="faMusic" fixed-width class="icon"/>{{ $t('sounds') }}</MkA>
+			<MkA class="item" :class="{ active: page === 'plugins' }" replace to="/settings/plugins"><Fa :icon="faPlug" fixed-width class="icon"/>{{ $t('plugins') }}</MkA>
 		</div>
 		<div class="menu">
 			<div class="label">{{ $t('otherSettings') }}</div>
-			<router-link class="item" replace to="/settings/mute-block"><Fa :icon="faBan" fixed-width class="icon"/>{{ $t('muteAndBlock') }}</router-link>
-			<router-link class="item" replace to="/settings/word-mute"><Fa :icon="faCommentSlash" fixed-width class="icon"/>{{ $t('wordMute') }}</router-link>
-			<router-link class="item" replace to="/settings/api"><Fa :icon="faKey" fixed-width class="icon"/>API</router-link>
-			<router-link class="item" replace to="/settings/other"><Fa :icon="faEllipsisH" fixed-width class="icon"/>{{ $t('other') }}</router-link>
+			<MkA class="item" :class="{ active: page === 'mute-block' }" replace to="/settings/mute-block"><Fa :icon="faBan" fixed-width class="icon"/>{{ $t('muteAndBlock') }}</MkA>
+			<MkA class="item" :class="{ active: page === 'word-mute' }" replace to="/settings/word-mute"><Fa :icon="faCommentSlash" fixed-width class="icon"/>{{ $t('wordMute') }}</MkA>
+			<MkA class="item" :class="{ active: page === 'api' }" replace to="/settings/api"><Fa :icon="faKey" fixed-width class="icon"/>API</MkA>
+			<MkA class="item" :class="{ active: page === 'other' }" replace to="/settings/other"><Fa :icon="faEllipsisH" fixed-width class="icon"/>{{ $t('other') }}</MkA>
 		</div>
 		<div class="menu">
 			<button class="_button item" @click="logout">{{ $t('logout') }}</button>
 		</div>
 	</div>
 	<div class="main">
-		<router-view v-slot="{ Component }">
-			<transition :name="($store.state.device.animation && !narrow) ? 'view-slide' : ''" appear mode="out-in">
-				<component :is="Component" @info="onInfo"/>
-			</transition>
-		</router-view>
+		<transition :name="($store.state.device.animation && !narrow) ? 'view-slide' : ''" appear mode="out-in">
+			<component :is="component" @info="onInfo"/>
+		</transition>
 	</div>
 </div>
 </template>
 
 <script lang="ts">
-import { defineComponent, onMounted, ref } from 'vue';
+import { computed, defineAsyncComponent, defineComponent, onMounted, ref } from 'vue';
 import { faCog, faPalette, faPlug, faUser, faListUl, faLock, faCommentSlash, faMusic, faCogs, faEllipsisH, faBan, faShareAlt, faLockOpen, faKey } from '@fortawesome/free-solid-svg-icons';
 import { faLaugh, faBell } from '@fortawesome/free-regular-svg-icons';
 import { store } from '@/store';
 import { i18n } from '@/i18n';
 
 export default defineComponent({
+	props: {
+		page: {
+			type: String,
+			required: false
+		}
+	},
+
 	setup(props, context) {
 		const INFO = ref({
 			header: [{
@@ -60,6 +65,27 @@ export default defineComponent({
 		const onInfo = (viewInfo) => {
 			INFO.value = viewInfo;
 		};
+		const component = computed(() => {
+			switch (props.page) {
+				case 'profile': return defineAsyncComponent(() => import('./profile.vue'));
+				case 'privacy': return defineAsyncComponent(() => import('./privacy.vue'));
+				case 'reaction': return defineAsyncComponent(() => import('./reaction.vue'));
+				case 'notifications': return defineAsyncComponent(() => import('./notifications.vue'));
+				case 'mute-block': return defineAsyncComponent(() => import('./mute-block.vue'));
+				case 'word-mute': return defineAsyncComponent(() => import('./word-mute.vue'));
+				case 'integration': return defineAsyncComponent(() => import('./integration.vue'));
+				case 'security': return defineAsyncComponent(() => import('./security.vue'));
+				case 'api': return defineAsyncComponent(() => import('./api.vue'));
+				case 'other': return defineAsyncComponent(() => import('./other.vue'));
+				case 'general': return defineAsyncComponent(() => import('./general.vue'));
+				case 'theme': return defineAsyncComponent(() => import('./theme.vue'));
+				case 'sidebar': return defineAsyncComponent(() => import('./sidebar.vue'));
+				case 'sounds': return defineAsyncComponent(() => import('./sounds.vue'));
+				case 'plugins': return defineAsyncComponent(() => import('./plugins.vue'));
+				case 'import-export': return defineAsyncComponent(() => import('./import-export.vue'));
+				default: return null;
+			}
+		});
 
 		onMounted(() => {
 			narrow.value = el.value.offsetWidth < 650;
@@ -71,6 +97,7 @@ export default defineComponent({
 			view,
 			el,
 			onInfo,
+			component,
 			logout: () => {
 				store.dispatch('logout');
 				location.href = '/';
@@ -121,7 +148,7 @@ export default defineComponent({
 					//border-top: solid 1px var(--divider);
 				}
 
-				&.router-link-active {
+				&.active {
 					color: var(--accent);
 					padding-left: 42px;
 				}
diff --git a/src/client/pages/settings/mute-block.vue b/src/client/pages/settings/mute-block.vue
index 5a08a8caae..87f5b88d3c 100644
--- a/src/client/pages/settings/mute-block.vue
+++ b/src/client/pages/settings/mute-block.vue
@@ -6,9 +6,9 @@
 			<template #empty><MkInfo>{{ $t('noUsers') }}</MkInfo></template>
 			<template #default="{items}">
 				<div class="user" v-for="mute in items" :key="mute.id">
-					<router-link class="name" :to="userPage(mute.mutee)">
+					<MkA class="name" :to="userPage(mute.mutee)">
 						<MkAcct :user="mute.mutee"/>
-					</router-link>
+					</MkA>
 				</div>
 			</template>
 		</MkPagination>
@@ -18,9 +18,9 @@
 			<template #empty><MkInfo>{{ $t('noUsers') }}</MkInfo></template>
 			<template #default="{items}">
 				<div class="user" v-for="block in items" :key="block.id">
-					<router-link class="name" :to="userPage(block.blockee)">
+					<MkA class="name" :to="userPage(block.blockee)">
 						<MkAcct :user="block.blockee"/>
-					</router-link>
+					</MkA>
 				</div>
 			</template>
 		</MkPagination>
diff --git a/src/client/pages/settings/theme.vue b/src/client/pages/settings/theme.vue
index 0571b6c5d1..866790bd26 100644
--- a/src/client/pages/settings/theme.vue
+++ b/src/client/pages/settings/theme.vue
@@ -43,7 +43,7 @@
 					<option v-for="x in lightThemes" :value="x.id" :key="x.id">{{ x.name }}</option>
 				</optgroup>
 			</MkSelect>
-			<a href="https://assets.msky.cafe/theme/list" rel="noopener" target="_blank" class="_link">{{ $t('_theme.explore') }}</a>・<router-link to="/theme-editor" class="_link">{{ $t('_theme.make') }}</router-link>
+			<a href="https://assets.msky.cafe/theme/list" rel="noopener" target="_blank" class="_link">{{ $t('_theme.explore') }}</a>・<MkA to="/theme-editor" class="_link">{{ $t('_theme.make') }}</MkA>
 		</div>
 		<div class="_content">
 			<MkButton primary v-if="wallpaper == null" @click="setWallpaper">{{ $t('setWallpaper') }}</MkButton>
diff --git a/src/client/pages/tag.vue b/src/client/pages/tag.vue
index cea74d1e17..bbaf5b81ca 100644
--- a/src/client/pages/tag.vue
+++ b/src/client/pages/tag.vue
@@ -15,11 +15,18 @@ export default defineComponent({
 		XNotes
 	},
 
+	props: {
+		tag: {
+			type: String,
+			required: true
+		}
+	},
+
 	data() {
 		return {
 			INFO: {
 				header: [{
-					title: this.$route.params.tag,
+					title: this.tag,
 					icon: faHashtag
 				}],
 			},
@@ -27,7 +34,7 @@ export default defineComponent({
 				endpoint: 'notes/search-by-tag',
 				limit: 10,
 				params: () => ({
-					tag: this.$route.params.tag,
+					tag: this.tag,
 				})
 			},
 			faHashtag
@@ -35,7 +42,7 @@ export default defineComponent({
 	},
 
 	watch: {
-		$route() {
+		tag() {
 			(this.$refs.notes as any).reload();
 		}
 	},
diff --git a/src/client/pages/test.vue b/src/client/pages/test.vue
index b053b859bb..5a3929d630 100644
--- a/src/client/pages/test.vue
+++ b/src/client/pages/test.vue
@@ -229,7 +229,7 @@ export default defineComponent({
 		},
 
 		messagingWindowOpen() {
-			os.pageWindow('/my/messaging', defineAsyncComponent(() => import('@/pages/messaging/index.vue')));
+			os.pageWindow('/my/messaging');
 		},
 
 		openWaitingDialog(text?) {
diff --git a/src/client/pages/timeline.tutorial.vue b/src/client/pages/timeline.tutorial.vue
index 506e97e1b5..837915229e 100644
--- a/src/client/pages/timeline.tutorial.vue
+++ b/src/client/pages/timeline.tutorial.vue
@@ -9,7 +9,7 @@
 	<div class="_content" v-else-if="tutorial === 1">
 		<div>{{ $t('_tutorial.step2_1') }}</div>
 		<div>{{ $t('_tutorial.step2_2') }}</div>
-		<router-link class="_link" to="/settings/profile">{{ $t('editProfile') }}</router-link>
+		<MkA class="_link" to="/settings/profile">{{ $t('editProfile') }}</MkA>
 	</div>
 	<div class="_content" v-else-if="tutorial === 2">
 		<div>{{ $t('_tutorial.step3_1') }}</div>
@@ -25,10 +25,10 @@
 		<div>{{ $t('_tutorial.step5_1') }}</div>
 		<i18n-t keypath="_tutorial.step5_2" tag="div">
 			<template #featured>
-				<router-link class="_link" to="/featured">{{ $t('featured') }}</router-link>
+				<MkA class="_link" to="/featured">{{ $t('featured') }}</MkA>
 			</template>
 			<template #explore>
-				<router-link class="_link" to="/explore">{{ $t('explore') }}</router-link>
+				<MkA class="_link" to="/explore">{{ $t('explore') }}</MkA>
 			</template>
 		</i18n-t>
 		<div>{{ $t('_tutorial.step5_3') }}</div>
@@ -43,7 +43,7 @@
 		<div>{{ $t('_tutorial.step7_1') }}</div>
 		<i18n-t keypath="_tutorial.step7_2" tag="div">
 			<template #help>
-				<router-link class="_link" to="/docs">{{ $t('help') }}</router-link>
+				<MkA class="_link" to="/docs">{{ $t('help') }}</MkA>
 			</template>
 		</i18n-t>
 		<div>{{ $t('_tutorial.step7_3') }}</div>
diff --git a/src/client/pages/user/follow-list.vue b/src/client/pages/user/follow-list.vue
index 411109c890..6761210ff6 100644
--- a/src/client/pages/user/follow-list.vue
+++ b/src/client/pages/user/follow-list.vue
@@ -10,7 +10,6 @@
 
 <script lang="ts">
 import { defineComponent } from 'vue';
-import parseAcct from '../../../misc/acct/parse';
 import MkUserInfo from '@/components/user-info.vue';
 import MkPagination from '@/components/ui/pagination.vue';
 import { userPage, acct } from '../../filters/user';
@@ -22,10 +21,14 @@ export default defineComponent({
 	},
 
 	props: {
+		user: {
+			type: Object,
+			required: true
+		},
 		type: {
 			type: String,
 			required: true
-		}
+		},
 	},
 
 	data() {
@@ -34,7 +37,7 @@ export default defineComponent({
 				endpoint: () => this.type === 'following' ? 'users/following' : 'users/followers',
 				limit: 20,
 				params: {
-					...parseAcct(this.$route.params.user),
+					userId: this.user.id,
 				}
 			},
 		};
@@ -45,7 +48,7 @@ export default defineComponent({
 			this.$refs.list.reload();
 		},
 
-		'$route'() {
+		user() {
 			this.$refs.list.reload();
 		}
 	},
diff --git a/src/client/pages/user/index.photos.vue b/src/client/pages/user/index.photos.vue
index dcd4d1fce8..aabcbebe8a 100644
--- a/src/client/pages/user/index.photos.vue
+++ b/src/client/pages/user/index.photos.vue
@@ -2,11 +2,11 @@
 <div class="ujigsodd">
 	<MkLoading v-if="fetching"/>
 	<div class="stream" v-if="!fetching && images.length > 0">
-		<router-link v-for="(image, i) in images" :key="i"
+		<MkA v-for="image in images"
 			class="img"
 			:style="`background-image: url(${thumbnail(image.file)})`"
 			:to="notePage(image.note)"
-		></router-link>
+		></MkA>
 	</div>
 	<p class="empty" v-if="!fetching && images.length == 0">{{ $t('nothing') }}</p>
 </div>
diff --git a/src/client/pages/user/index.vue b/src/client/pages/user/index.vue
index 94940f6ef2..01f0deac49 100644
--- a/src/client/pages/user/index.vue
+++ b/src/client/pages/user/index.vue
@@ -67,24 +67,23 @@
 				</dl>
 			</div>
 			<div class="status">
-				<router-link :to="userPage(user)" :class="{ active: $route.name === 'user' }">
+				<MkA :to="userPage(user)" :class="{ active: page === 'index' }">
 					<b>{{ number(user.notesCount) }}</b>
 					<span>{{ $t('notes') }}</span>
-				</router-link>
-				<router-link :to="userPage(user, 'following')" :class="{ active: $route.name === 'userFollowing' }">
+				</MkA>
+				<MkA :to="userPage(user, 'following')" :class="{ active: page === 'following' }">
 					<b>{{ number(user.followingCount) }}</b>
 					<span>{{ $t('following') }}</span>
-				</router-link>
-				<router-link :to="userPage(user, 'followers')" :class="{ active: $route.name === 'userFollowers' }">
+				</MkA>
+				<MkA :to="userPage(user, 'followers')" :class="{ active: page === 'followers' }">
 					<b>{{ number(user.followersCount) }}</b>
 					<span>{{ $t('followers') }}</span>
-				</router-link>
+				</MkA>
 			</div>
 		</div>
 	</div>
 
-	<router-view :user="user"></router-view>
-	<template v-if="$route.name == 'user'">
+	<template v-if="page === 'index'">
 		<div class="_section">
 			<div class="_content _vMargin" v-if="user.pinnedNotes.length > 0">
 				<XNote v-for="note in user.pinnedNotes" class="note _vMargin" :note="note" @update:note="pinnedNoteUpdated(note, $event)" :key="note.id" :detail="true" :pinned="true"/>
@@ -106,6 +105,8 @@
 			<XUserTimeline :user="user" class="_content"/>
 		</div>
 	</template>
+	<XFollowList v-else-if="page === 'following'" type="following" :user="user"/>
+	<XFollowList v-else-if="page === 'followers'" type="followers" :user="user"/>
 </div>
 <div v-else-if="error">
 	<MkError @retry="fetch()"/>
@@ -128,7 +129,7 @@ import parseAcct from '../../../misc/acct/parse';
 import { getScrollPosition } from '@/scripts/scroll';
 import { getUserMenu } from '@/scripts/get-user-menu';
 import number from '../../filters/number';
-import { userPage, acct } from '../../filters/user';
+import { userPage, acct as getAcct } from '../../filters/user';
 import * as os from '@/os';
 
 export default defineComponent({
@@ -139,10 +140,23 @@ export default defineComponent({
 		MkContainer,
 		MkRemoteCaution,
 		MkFolder,
+		XFollowList: defineAsyncComponent(() => import('./follow-list.vue')),
 		XPhotos: defineAsyncComponent(() => import('./index.photos.vue')),
 		XActivity: defineAsyncComponent(() => import('./index.activity.vue')),
 	},
 
+	props: {
+		acct: {
+			type: String,
+			required: true
+		},
+		page: {
+			type: String,
+			required: false,
+			default: 'index'
+		}
+	},
+
 	data() {
 		return {
 			INFO: computed(() => this.user ? {
@@ -176,7 +190,7 @@ export default defineComponent({
 	},
 
 	watch: {
-		$route: 'fetch'
+		acct: 'fetch'
 	},
 
 	created() {
@@ -192,10 +206,12 @@ export default defineComponent({
 	},
 
 	methods: {
+		getAcct,
+
 		fetch() {
-			if (this.$route.params.user == null) return;
+			if (this.acct == null) return;
 			Progress.start();
-			os.api('users/show', parseAcct(this.$route.params.user)).then(user => {
+			os.api('users/show', parseAcct(this.acct)).then(user => {
 				this.user = user;
 			}).catch(e => {
 				this.error = e;
diff --git a/src/client/router.ts b/src/client/router.ts
index c9c7a32835..ef540f0d4b 100644
--- a/src/client/router.ts
+++ b/src/client/router.ts
@@ -1,4 +1,4 @@
-import { defineAsyncComponent } from 'vue';
+import { defineAsyncComponent, markRaw } from 'vue';
 import { createRouter, createWebHistory } from 'vue-router';
 import MkLoading from '@/pages/_loading_.vue';
 import MkError from '@/pages/_error_.vue';
@@ -18,30 +18,11 @@ export const router = createRouter({
 	routes: [
 		// NOTE: MkTimelineをdynamic importするとAsyncComponentWrapperが間に入るせいでkeep-aliveのコンポーネント指定が効かなくなる
 		{ path: '/', name: 'index', component: store.getters.isSignedIn ? MkTimeline : page('welcome') },
-		{ path: '/@:user', name: 'user', component: page('user/index'), children: [
-			{ path: 'following', name: 'userFollowing', component: page('user/follow-list'), props: { type: 'following' } },
-			{ path: 'followers', name: 'userFollowers', component: page('user/follow-list'), props: { type: 'followers' } },
-		]},
+		{ path: '/@:acct/:page?', name: 'user', component: page('user/index'), props: route => ({ acct: route.params.acct, page: route.params.page || 'index' }) },
 		{ path: '/@:user/pages/:page', component: page('page'), props: route => ({ pageName: route.params.page, username: route.params.user }) },
 		{ path: '/@:user/pages/:pageName/view-source', component: page('page-editor/page-editor'), props: route => ({ initUser: route.params.user, initPageName: route.params.pageName }) },
 		{ path: '/@:acct/room', props: true, component: page('room/room') },
-		{ path: '/settings', name: 'settings', component: page('settings/index'), children: [
-			{ path: 'profile', component: page('settings/profile') },
-			{ path: 'privacy', component: page('settings/privacy') },
-			{ path: 'reaction', component: page('settings/reaction') },
-			{ path: 'notifications', component: page('settings/notifications') },
-			{ path: 'mute-block', component: page('settings/mute-block') },
-			{ path: 'word-mute', component: page('settings/word-mute') },
-			{ path: 'integration', component: page('settings/integration') },
-			{ path: 'security', component: page('settings/security') },
-			{ path: 'api', component: page('settings/api') },
-			{ path: 'other', component: page('settings/other') },
-			{ path: 'general', component: page('settings/general') },
-			{ path: 'theme', component: page('settings/theme') },
-			{ path: 'sidebar', component: page('settings/sidebar') },
-			{ path: 'sounds', component: page('settings/sounds') },
-			{ path: 'plugins', component: page('settings/plugins') },
-		]},
+		{ path: '/settings/:page?', name: 'settings', component: page('settings/index'), props: route => ({ page: route.params.page || null }) },
 		{ path: '/announcements', component: page('announcements') },
 		{ path: '/about', component: page('about') },
 		{ path: '/about-misskey', component: page('about-misskey') },
@@ -87,8 +68,8 @@ export const router = createRouter({
 		{ path: '/instance/relays', component: page('instance/relays') },
 		{ path: '/instance/announcements', component: page('instance/announcements') },
 		{ path: '/instance/abuses', component: page('instance/abuses') },
-		{ path: '/notes/:note', name: 'note', component: page('note') },
-		{ path: '/tags/:tag', component: page('tag') },
+		{ path: '/notes/:note', name: 'note', component: page('note'), props: route => ({ noteId: route.params.note }) },
+		{ path: '/tags/:tag', component: page('tag'), props: route => ({ tag: route.params.tag }) },
 		{ path: '/auth/:token', component: page('auth') },
 		{ path: '/miauth/:session', component: page('miauth') },
 		{ path: '/authorize-follow', component: page('follow') },
@@ -120,3 +101,13 @@ router.afterEach((to, from) => {
 		indexScrollPos = window.scrollY;
 	}
 });
+
+export function resolve(path: string) {
+	const resolved = router.resolve(path);
+	const route = resolved.matched[0];
+	return {
+		component: markRaw(route.components.default),
+		// TODO: route.propsには関数以外も入る可能性があるのでよしなにハンドリングする
+		props: route.props?.default ? route.props.default(resolved) : resolved.params
+	};
+}
diff --git a/src/client/scripts/get-user-menu.ts b/src/client/scripts/get-user-menu.ts
index cace2e1425..72ae9c1e7b 100644
--- a/src/client/scripts/get-user-menu.ts
+++ b/src/client/scripts/get-user-menu.ts
@@ -7,7 +7,6 @@ import getAcct from '../../misc/acct/render';
 import * as os from '@/os';
 import { store, userActions } from '@/store';
 import { router } from '@/router';
-import { defineAsyncComponent } from 'vue';
 import { popout } from './popout';
 
 export function getUserMenu(user) {
@@ -137,7 +136,7 @@ export function getUserMenu(user) {
 		action: () => {
 			const acct = getAcct(user);
 			switch (store.state.device.chatOpenBehavior) {
-				case 'window': { os.pageWindow('/my/messaging/' + acct, defineAsyncComponent(() => import('@/pages/messaging/messaging-room.vue')), { userAcct: acct }); break; }
+				case 'window': { os.pageWindow('/my/messaging/' + acct); break; }
 				case 'popout': { popout('/my/messaging'); break; }
 				default: { router.push('/my/messaging'); break; }
 			}
diff --git a/src/client/sidebar.ts b/src/client/sidebar.ts
index b8a2b8a7c3..e57f85020d 100644
--- a/src/client/sidebar.ts
+++ b/src/client/sidebar.ts
@@ -1,6 +1,6 @@
 import { faBell, faComments, faEnvelope } from '@fortawesome/free-regular-svg-icons';
 import { faAt, faBroadcastTower, faCloud, faColumns, faDoorClosed, faFileAlt, faFireAlt, faGamepad, faHashtag, faListUl, faSatellite, faSatelliteDish, faSearch, faStar, faTerminal, faUserClock, faUsers } from '@fortawesome/free-solid-svg-icons';
-import { computed, defineAsyncComponent } from 'vue';
+import { computed } from 'vue';
 import { store } from '@/store';
 import { deckmode } from '@/config';
 import { search } from '@/scripts/search';
@@ -23,7 +23,7 @@ export const sidebarDef = {
 		indicated: computed(() => store.getters.isSignedIn && store.state.i.hasUnreadMessagingMessage),
 		action: () => {
 			switch (store.state.device.chatOpenBehavior) {
-				case 'window': { os.pageWindow('/my/messaging', defineAsyncComponent(() => import('@/pages/messaging/index.vue'))); break; }
+				case 'window': { os.pageWindow('/my/messaging'); break; }
 				case 'popout': { popout('/my/messaging'); break; }
 				default: { router.push('/my/messaging'); break; }
 			}
diff --git a/src/client/store.ts b/src/client/store.ts
index f1ad23e1f5..e627ed9b55 100644
--- a/src/client/store.ts
+++ b/src/client/store.ts
@@ -70,6 +70,8 @@ export const defaultDeviceSettings = {
 	animatedMfm: true,
 	imageNewTab: false,
 	chatOpenBehavior: 'page',
+	defaultSideView: false,
+	deckNavWindow: true,
 	showFixedPostForm: false,
 	disablePagesScript: false,
 	enableInfiniteScroll: true,
diff --git a/src/client/root.vue b/src/client/ui/_common_/common.vue
similarity index 65%
rename from src/client/root.vue
rename to src/client/ui/_common_/common.vue
index 0bca5cbe8c..dea3e30a91 100644
--- a/src/client/root.vue
+++ b/src/client/ui/_common_/common.vue
@@ -1,9 +1,4 @@
 <template>
-<ZenUI v-if="zen"/>
-<VisitorUI v-else-if="!$store.getters.isSignedIn"/>
-<DeckUI v-else-if="deckmode"/>
-<DefaultUI v-else/>
-
 <component v-for="popup in popups"
 	:key="popup.id"
 	:is="popup.component"
@@ -13,27 +8,23 @@
 
 <XUpload v-if="uploads.length > 0"/>
 
+<XStreamIndicator/>
+
 <div id="wait" v-if="pendingApiRequestsCount > 0"></div>
 </template>
 
 <script lang="ts">
 import { defineAsyncComponent, defineComponent } from 'vue';
-import { deckmode } from '@/config';
 import { popups, uploads, pendingApiRequestsCount } from '@/os';
 
 export default defineComponent({
 	components: {
-		DefaultUI: defineAsyncComponent(() => import('@/ui/default.vue')),
-		DeckUI: defineAsyncComponent(() => import('@/ui/deck.vue')),
-		ZenUI: defineAsyncComponent(() => import('@/ui/zen.vue')),
-		VisitorUI: defineAsyncComponent(() => import('@/ui/visitor.vue')),
-		XUpload: defineAsyncComponent(() => import('@/components/upload.vue')),
+		XStreamIndicator: defineAsyncComponent(() => import('./stream-indicator.vue')),
+		XUpload: defineAsyncComponent(() => import('./upload.vue')),
 	},
 
 	setup() {
 		return {
-			zen: window.location.search === '?zen',
-			deckmode,
 			uploads,
 			popups,
 			pendingApiRequestsCount,
diff --git a/src/client/components/stream-indicator.vue b/src/client/ui/_common_/stream-indicator.vue
similarity index 100%
rename from src/client/components/stream-indicator.vue
rename to src/client/ui/_common_/stream-indicator.vue
diff --git a/src/client/components/upload.vue b/src/client/ui/_common_/upload.vue
similarity index 100%
rename from src/client/components/upload.vue
rename to src/client/ui/_common_/upload.vue
diff --git a/src/client/ui/deck.vue b/src/client/ui/deck.vue
index b067b948ce..2a5008dc56 100644
--- a/src/client/ui/deck.vue
+++ b/src/client/ui/deck.vue
@@ -29,7 +29,7 @@
 	<button v-if="$store.getters.isSignedIn" class="nav _button" @click="showNav()"><Fa :icon="faBars"/><i v-if="navIndicated"><Fa :icon="faCircle"/></i></button>
 	<button v-if="$store.getters.isSignedIn" class="post _buttonPrimary" @click="post()"><Fa :icon="faPencilAlt"/></button>
 
-	<StreamIndicator v-if="$store.getters.isSignedIn"/>
+	<XCommon/>
 </div>
 </template>
 
@@ -47,9 +47,11 @@ import XHeader from './_common_/header.vue';
 import { getScrollContainer } from '@/scripts/scroll';
 import * as os from '@/os';
 import { sidebarDef } from '@/sidebar';
+import XCommon from './_common_/common.vue';
 
 export default defineComponent({
 	components: {
+		XCommon,
 		XSidebar,
 		XHeader,
 		DeckColumn,
diff --git a/src/client/ui/default.side.vue b/src/client/ui/default.side.vue
new file mode 100644
index 0000000000..cff35f6ed3
--- /dev/null
+++ b/src/client/ui/default.side.vue
@@ -0,0 +1,157 @@
+<template>
+<div class="qvzfzxam _narrow_" v-if="component">
+	<div class="container">
+		<header class="header" @contextmenu.prevent.stop="onContextmenu">
+			<button class="_button" @click="back()" v-if="history.length > 0"><Fa :icon="faChevronLeft"/></button>
+			<button class="_button" style="pointer-events: none;" v-else><!-- マージンのバランスを取るためのダミー --></button>
+			<XHeader class="title" :info="pageInfo" :with-back="false"/>
+			<button class="_button" @click="close()"><Fa :icon="faTimes"/></button>
+		</header>
+		<component :is="component" v-bind="props" :ref="changePage"/>
+	</div>
+</div>
+</template>
+
+<script lang="ts">
+import { defineComponent } from 'vue';
+import { faTimes, faChevronLeft, faExpandAlt, faWindowMaximize, faExternalLinkAlt, faLink } from '@fortawesome/free-solid-svg-icons';
+import XHeader from './_common_/header.vue';
+import * as os from '@/os';
+import copyToClipboard from '@/scripts/copy-to-clipboard';
+import { resolve } from '@/router';
+
+export default defineComponent({
+	components: {
+		XHeader
+	},
+
+	provide() {
+		return {
+			navHook: (url) => {
+				this.navigate(url);
+			}
+		};
+	},
+
+	data() {
+		return {
+			url: null,
+			component: null,
+			props: {},
+			pageInfo: null,
+			history: [],
+			faTimes, faChevronLeft,
+		};
+	},
+
+	methods: {
+		changePage(page) {
+			if (page == null) return;
+			if (page.INFO) {
+				this.pageInfo = page.INFO;
+			}
+		},
+
+		navigate(url, record = true) {
+			if (record && this.url) this.history.push(this.url);
+			this.url = url;
+			const { component, props } = resolve(url);
+			this.component = component;
+			this.props = props;
+		},
+
+		back() {
+			this.navigate(this.history.pop(), false);
+		},
+
+		close() {
+			this.url = null;
+			this.component = null;
+			this.props = {};
+		},
+
+		onContextmenu(e) {
+			os.contextMenu([{
+				type: 'label',
+				text: this.url,
+			}, {
+				icon: faExpandAlt,
+				text: this.$t('showInPage'),
+				action: () => {
+					this.$router.push(this.url);
+					this.close();
+				}
+			}, {
+				icon: faWindowMaximize,
+				text: this.$t('openInWindow'),
+				action: () => {
+					os.pageWindow(this.url);
+					this.close();
+				}
+			}, null, {
+				icon: faExternalLinkAlt,
+				text: this.$t('openInNewTab'),
+				action: () => {
+					window.open(this.url, '_blank');
+					this.close();
+				}
+			}, {
+				icon: faLink,
+				text: this.$t('copyLink'),
+				action: () => {
+					copyToClipboard(this.url);
+				}
+			}], e);
+		}
+	}
+});
+</script>
+
+<style lang="scss" scoped>
+.qvzfzxam {
+	$header-height: 58px; // TODO: どこかに集約したい
+
+	--section-padding: 16px;
+	--margin: var(--marginHalf);
+
+	> .container {
+		position: fixed;
+		width: 370px;
+		height: 100vh;
+		overflow: auto;
+		box-sizing: border-box;
+
+		> .header {
+			display: flex;
+			position: sticky;
+			z-index: 1000;
+			top: 0;
+			height: $header-height;
+			width: 100%;
+			line-height: $header-height;
+			text-align: center;
+			font-weight: bold;
+			//background-color: var(--panel);
+			-webkit-backdrop-filter: blur(32px);
+			backdrop-filter: blur(32px);
+			background-color: var(--header);
+			border-bottom: solid 1px var(--divider);
+
+			> ._button {
+				height: $header-height;
+				width: $header-height;
+
+				&:hover {
+					color: var(--fgHighlighted);
+				}
+			}
+
+			> .title {
+				flex: 1;
+				position: relative;
+			}
+		}
+	}
+}
+</style>
+
diff --git a/src/client/ui/default.vue b/src/client/ui/default.vue
index 754ed72c8d..b674186dbe 100644
--- a/src/client/ui/default.vue
+++ b/src/client/ui/default.vue
@@ -20,6 +20,8 @@
 		</main>
 	</div>
 
+	<XSide v-if="isDesktop" class="side" ref="side"/>
+
 	<div v-if="isDesktop" class="widgets">
 		<div ref="widgetsSpacer"></div>
 		<XWidgets @mounted="attachSticky"/>
@@ -47,19 +49,21 @@
 		<XWidgets v-if="widgetsShowing" class="tray"/>
 	</transition>
 
-	<StreamIndicator/>
+	<XCommon/>
 </div>
 </template>
 
 <script lang="ts">
-import { defineComponent, defineAsyncComponent } from 'vue';
+import { defineComponent, defineAsyncComponent, markRaw } from 'vue';
 import { faLayerGroup, faBars, faHome, faCircle } from '@fortawesome/free-solid-svg-icons';
 import { faBell } from '@fortawesome/free-regular-svg-icons';
 import { host } from '@/config';
 import { search } from '@/scripts/search';
 import { StickySidebar } from '@/scripts/sticky-sidebar';
 import XSidebar from '@/components/sidebar.vue';
+import XCommon from './_common_/common.vue';
 import XHeader from './_common_/header.vue';
+import XSide from './default.side.vue';
 import * as os from '@/os';
 import { sidebarDef } from '@/sidebar';
 
@@ -67,9 +71,19 @@ const DESKTOP_THRESHOLD = 1100;
 
 export default defineComponent({
 	components: {
+		XCommon,
 		XSidebar,
 		XHeader,
 		XWidgets: defineAsyncComponent(() => import('./default.widgets.vue')),
+		XSide, // NOTE: dynamic importするとAsyncComponentWrapperが間に入るせいでref取得できなくて面倒になる
+	},
+
+	provide() {
+		return {
+			sideViewHook: (url) => {
+				this.$refs.side.navigate(url);
+			}
+		};
 	},
 
 	data() {
@@ -245,7 +259,7 @@ export default defineComponent({
 }
 
 .mk-app {
-	$header-height: 60px;
+	$header-height: 58px; // TODO: どこかに集約したい
 	$ui-font-size: 1em; // TODO: どこかに集約したい
 	$widgets-hide-threshold: 1090px;
 
@@ -301,6 +315,12 @@ export default defineComponent({
 		}
 	}
 
+	> .side {
+		min-width: 370px;
+		max-width: 370px;
+		border-left: solid 1px var(--divider);
+	}
+
 	> .widgets {
 		padding: 0 var(--margin);
 		border-left: solid 1px var(--divider);
diff --git a/src/client/ui/visitor.vue b/src/client/ui/visitor.vue
index fb21dc01d1..8b7dfd7911 100644
--- a/src/client/ui/visitor.vue
+++ b/src/client/ui/visitor.vue
@@ -1,10 +1,10 @@
 <template>
 <div class="mk-app">
 	<header>
-		<router-link class="link" to="/">{{ $t('home') }}</router-link>
-		<router-link class="link" to="/announcements">{{ $t('announcements') }}</router-link>
-		<router-link class="link" to="/channels">{{ $t('channel') }}</router-link>
-		<router-link class="link" to="/about">{{ $t('aboutX', { x: instanceName || host }) }}</router-link>
+		<MkA class="link" to="/">{{ $t('home') }}</MkA>
+		<MkA class="link" to="/announcements">{{ $t('announcements') }}</MkA>
+		<MkA class="link" to="/channels">{{ $t('channel') }}</MkA>
+		<MkA class="link" to="/about">{{ $t('aboutX', { x: instanceName || host }) }}</MkA>
 	</header>
 
 	<div class="banner" :style="{ backgroundImage: `url(${ $store.state.instance.meta.bannerUrl })` }">
@@ -23,12 +23,12 @@
 			</router-view>
 		</main>
 		<div class="powered-by">
-			<b><router-link to="/">{{ host }}</router-link></b>
+			<b><MkA to="/">{{ host }}</MkA></b>
 			<small>Powered by <a href="https://github.com/syuilo/misskey" target="_blank">Misskey</a></small>
 		</div>
 	</div>
 
-	<StreamIndicator v-if="$store.getters.isSignedIn"/>
+	<XCommon/>
 </div>
 </template>
 
@@ -39,12 +39,14 @@ import { host, instanceName } from '@/config';
 import { search } from '@/scripts/search';
 import * as os from '@/os';
 import XHeader from './_common_/header.vue';
+import XCommon from './_common_/common.vue';
 
 const DESKTOP_THRESHOLD = 1100;
 
 export default defineComponent({
 	components: {
-		XHeader
+		XCommon,
+		XHeader,
 	},
 
 	data() {
@@ -130,7 +132,7 @@ export default defineComponent({
 			line-height: 60px;
 			padding: 0 0.7em;
 
-			&.router-link-active {
+			&.MkA-active {
 				box-shadow: 0 -2px 0 0 var(--accent) inset;
 			}
 		}
diff --git a/src/client/ui/zen.vue b/src/client/ui/zen.vue
index 0435f0f582..9c351f67e1 100644
--- a/src/client/ui/zen.vue
+++ b/src/client/ui/zen.vue
@@ -17,7 +17,7 @@
 		</main>
 	</div>
 
-	<StreamIndicator/>
+	<XCommon/>
 </div>
 </template>
 
@@ -28,10 +28,12 @@ import { faBell } from '@fortawesome/free-regular-svg-icons';
 import { host } from '@/config';
 import { search } from '@/scripts/search';
 import XHeader from './_common_/header.vue';
+import XCommon from './_common_/common.vue';
 import * as os from '@/os';
 
 export default defineComponent({
 	components: {
+		XCommon,
 		XHeader,
 	},
 
diff --git a/src/client/widgets/trends.vue b/src/client/widgets/trends.vue
index 17262445ef..9510bf205c 100644
--- a/src/client/widgets/trends.vue
+++ b/src/client/widgets/trends.vue
@@ -7,7 +7,7 @@
 		<transition-group tag="div" name="chart" class="tags" v-else>
 			<div v-for="stat in stats" :key="stat.tag">
 				<div class="tag">
-					<router-link class="a" :to="`/tags/${ encodeURIComponent(stat.tag) }`" :title="stat.tag">#{{ stat.tag }}</router-link>
+					<MkA class="a" :to="`/tags/${ encodeURIComponent(stat.tag) }`" :title="stat.tag">#{{ stat.tag }}</MkA>
 					<p>{{ $t('nUsersMentioned', { n: stat.usersCount }) }}</p>
 				</div>
 				<MkMiniChart class="chart" :src="stat.chart"/>