diff --git a/packages/backend/test/e2e/timeline.ts b/packages/backend/test/e2e/timeline.ts
new file mode 100644
index 0000000000..40a483246c
--- /dev/null
+++ b/packages/backend/test/e2e/timeline.ts
@@ -0,0 +1,193 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and other misskey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+process.env.NODE_ENV = 'test';
+
+import * as assert from 'assert';
+import { signup, api, post, react, startServer, waitFire, sleep } from '../utils.js';
+import type { INestApplicationContext } from '@nestjs/common';
+import type * as misskey from 'misskey-js';
+
+describe('Renote Mute', () => {
+	let app: INestApplicationContext;
+
+	beforeAll(async () => {
+		app = await startServer();
+	}, 1000 * 60 * 2);
+
+	afterAll(async () => {
+		await app.close();
+	});
+
+	test('タイムラインにフォローしているユーザーのノートが含まれる', async () => {
+		const [alice, bob, carol] = await Promise.all([signup(), signup(), signup()]);
+
+		await api('/following/create', {
+			userId: bob.id,
+		}, alice);
+		const bobNote = await post(bob, { text: 'hi' });
+		const carolNote = await post(carol, { text: 'hi' });
+
+		// redisに追加されるのを待つ
+		await sleep(100);
+
+		const res = await api('/notes/timeline', {}, alice);
+
+		assert.strictEqual(res.status, 200);
+		assert.strictEqual(Array.isArray(res.body), true);
+		assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), true);
+		assert.strictEqual(res.body.some((note: any) => note.id === carolNote.id), false);
+	});
+
+	test('タイムラインにフォローしているユーザーの visibility: followers なノートが含まれる', async () => {
+		const [alice, bob, carol] = await Promise.all([signup(), signup(), signup()]);
+
+		await api('/following/create', {
+			userId: bob.id,
+		}, alice);
+		const bobNote = await post(bob, { text: 'hi', visibility: 'followers' });
+		const carolNote = await post(carol, { text: 'hi' });
+
+		// redisに追加されるのを待つ
+		await sleep(100);
+
+		const res = await api('/notes/timeline', {}, alice);
+
+		assert.strictEqual(res.status, 200);
+		assert.strictEqual(Array.isArray(res.body), true);
+		assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), true);
+		assert.strictEqual(res.body.find((note: any) => note.id === bobNote.id).text, 'hi');
+		assert.strictEqual(res.body.some((note: any) => note.id === carolNote.id), false);
+	});
+
+	test('タイムラインに withReplies: false でフォローしているユーザーの他人への返信が含まれない', async () => {
+		const [alice, bob, carol] = await Promise.all([signup(), signup(), signup()]);
+
+		await api('/following/create', {
+			userId: bob.id,
+		}, alice);
+		const carolNote = await post(carol, { text: 'hi' });
+		const bobNote = await post(bob, { text: 'hi', replyId: carolNote.id });
+
+		// redisに追加されるのを待つ
+		await sleep(100);
+
+		const res = await api('/notes/timeline', {}, alice);
+
+		assert.strictEqual(res.status, 200);
+		assert.strictEqual(Array.isArray(res.body), true);
+		assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+		assert.strictEqual(res.body.some((note: any) => note.id === carolNote.id), false);
+	});
+
+	test('タイムラインに withReplies: true でフォローしているユーザーの他人への返信が含まれる', async () => {
+		const [alice, bob, carol] = await Promise.all([signup(), signup(), signup()]);
+
+		await api('/following/create', {
+			userId: bob.id,
+		}, alice);
+		await api('/following/update', {
+			userId: bob.id,
+			withReplies: true,
+		}, alice);
+		const carolNote = await post(carol, { text: 'hi' });
+		const bobNote = await post(bob, { text: 'hi', replyId: carolNote.id });
+
+		// redisに追加されるのを待つ
+		await sleep(100);
+
+		const res = await api('/notes/timeline', {}, alice);
+
+		assert.strictEqual(res.status, 200);
+		assert.strictEqual(Array.isArray(res.body), true);
+		assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), true);
+		assert.strictEqual(res.body.some((note: any) => note.id === carolNote.id), false);
+	});
+
+	test('タイムラインに withReplies: true でフォローしているユーザーの他人へのDM返信が含まれない', async () => {
+		const [alice, bob, carol] = await Promise.all([signup(), signup(), signup()]);
+
+		await api('/following/create', {
+			userId: bob.id,
+		}, alice);
+		await api('/following/update', {
+			userId: bob.id,
+			withReplies: true,
+		}, alice);
+		const carolNote = await post(carol, { text: 'hi' });
+		const bobNote = await post(bob, { text: 'hi', replyId: carolNote.id, visibility: 'specified', visibleUserIds: [carolNote.id] });
+
+		// redisに追加されるのを待つ
+		await sleep(100);
+
+		const res = await api('/notes/timeline', {}, alice);
+
+		assert.strictEqual(res.status, 200);
+		assert.strictEqual(Array.isArray(res.body), true);
+		assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+		assert.strictEqual(res.body.some((note: any) => note.id === carolNote.id), false);
+	});
+
+	test('タイムラインに withReplies: true でフォローしているユーザーの他人の visibility: followers な投稿への返信が含まれない', async () => {
+		const [alice, bob, carol] = await Promise.all([signup(), signup(), signup()]);
+
+		await api('/following/create', {
+			userId: bob.id,
+		}, alice);
+		await api('/following/update', {
+			userId: bob.id,
+			withReplies: true,
+		}, alice);
+		const carolNote = await post(carol, { text: 'hi', visibility: 'followers' });
+		const bobNote = await post(bob, { text: 'hi', replyId: carolNote.id });
+
+		// redisに追加されるのを待つ
+		await sleep(100);
+
+		const res = await api('/notes/timeline', {}, alice);
+
+		assert.strictEqual(res.status, 200);
+		assert.strictEqual(Array.isArray(res.body), true);
+		assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+		assert.strictEqual(res.body.some((note: any) => note.id === carolNote.id), false);
+	});
+
+	test('タイムラインに withReplies: false でフォローしているユーザーのそのユーザー自身への返信が含まれる', async () => {
+		const [alice, bob, carol] = await Promise.all([signup(), signup(), signup()]);
+
+		await api('/following/create', {
+			userId: bob.id,
+		}, alice);
+		const bobNote1 = await post(bob, { text: 'hi' });
+		const bobNote2 = await post(bob, { text: 'hi', replyId: bobNote1.id });
+
+		// redisに追加されるのを待つ
+		await sleep(100);
+
+		const res = await api('/notes/timeline', {}, alice);
+
+		assert.strictEqual(res.status, 200);
+		assert.strictEqual(Array.isArray(res.body), true);
+		assert.strictEqual(res.body.some((note: any) => note.id === bobNote1.id), true);
+		assert.strictEqual(res.body.some((note: any) => note.id === bobNote2.id), true);
+	});
+
+	test('タイムラインに自分の他人への返信が含まれる', async () => {
+		const [alice, bob, carol] = await Promise.all([signup(), signup(), signup()]);
+
+		const bobNote = await post(bob, { text: 'hi' });
+		const aliceNote = await post(bob, { text: 'hi', replyId: bobNote.id });
+
+		// redisに追加されるのを待つ
+		await sleep(100);
+
+		const res = await api('/notes/timeline', {}, alice);
+
+		assert.strictEqual(res.status, 200);
+		assert.strictEqual(Array.isArray(res.body), true);
+		assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+		assert.strictEqual(res.body.some((note: any) => note.id === aliceNote.id), true);
+	});
+});
diff --git a/packages/backend/test/utils.ts b/packages/backend/test/utils.ts
index adc532bbe7..fae9018422 100644
--- a/packages/backend/test/utils.ts
+++ b/packages/backend/test/utils.ts
@@ -99,9 +99,17 @@ export const relativeFetch = async (path: string, init?: RequestInit | undefined
 	return await fetch(new URL(path, `http://127.0.0.1:${port}/`).toString(), init);
 };
 
+function randomString(chars = 'abcdefghijklmnopqrstuvwxyz0123456789', length = 16) {
+	let randomString = '';
+	for (let i = 0; i < length; i++) {
+		randomString += chars[Math.floor(Math.random() * chars.length)];
+	}
+	return randomString;
+}
+
 export const signup = async (params?: Partial<misskey.Endpoints['signup']['req']>): Promise<NonNullable<misskey.Endpoints['signup']['res']>> => {
 	const q = Object.assign({
-		username: 'test',
+		username: randomString(),
 		password: 'test',
 	}, params);