diff --git a/packages/backend/src/core/NoteCreateService.ts b/packages/backend/src/core/NoteCreateService.ts
index f03316744d..419e58ec62 100644
--- a/packages/backend/src/core/NoteCreateService.ts
+++ b/packages/backend/src/core/NoteCreateService.ts
@@ -57,8 +57,10 @@ import { FeaturedService } from '@/core/FeaturedService.js';
 import { FanoutTimelineService } from '@/core/FanoutTimelineService.js';
 import { UtilityService } from '@/core/UtilityService.js';
 import { UserBlockingService } from '@/core/UserBlockingService.js';
+import { CacheService } from '@/core/CacheService.js';
 import { isReply } from '@/misc/is-reply.js';
 import { trackPromise } from '@/misc/promise-tracker.js';
+import { isUserRelated } from '@/misc/is-user-related.js';
 
 type NotificationType = 'reply' | 'renote' | 'quote' | 'mention';
 
@@ -217,6 +219,7 @@ export class NoteCreateService implements OnApplicationShutdown {
 		private instanceChart: InstanceChart,
 		private utilityService: UtilityService,
 		private userBlockingService: UserBlockingService,
+		private cacheService: CacheService,
 	) { }
 
 	@bindThis
@@ -796,7 +799,15 @@ export class NoteCreateService implements OnApplicationShutdown {
 						},
 					});
 
-					if (!isThreadMuted) {
+					const [
+						userIdsWhoMeMuting,
+					] = data.reply.userId ? await Promise.all([
+						this.cacheService.userMutingsCache.fetch(data.reply.userId),
+					]) : [new Set<string>()];
+
+					const muted = isUserRelated(note, userIdsWhoMeMuting);
+
+					if (!isThreadMuted || !muted) {
 						nm.push(data.reply.userId, 'reply');
 						this.globalEventService.publishMainStream(data.reply.userId, 'reply', noteObj);
 
@@ -823,7 +834,15 @@ export class NoteCreateService implements OnApplicationShutdown {
 						},
 					});
 
-					if (!isThreadMuted) {
+					const [
+						userIdsWhoMeMuting,
+					] = data.renote.userId ? await Promise.all([
+						this.cacheService.userMutingsCache.fetch(data.renote.userId),
+					]) : [new Set<string>()];
+
+					const muted = isUserRelated(note, userIdsWhoMeMuting);
+
+					if (!isThreadMuted || !muted) {
 						nm.push(data.renote.userId, type);
 					}
 				}
@@ -1042,7 +1061,15 @@ export class NoteCreateService implements OnApplicationShutdown {
 				},
 			});
 
-			if (isThreadMuted) {
+			const [
+				userIdsWhoMeMuting,
+			] = u.id ? await Promise.all([
+				this.cacheService.userMutingsCache.fetch(u.id),
+			]) : [new Set<string>()];
+
+			const muted = isUserRelated(note, userIdsWhoMeMuting);
+
+			if (isThreadMuted || muted) {
 				continue;
 			}