diff --git a/locales/index.d.ts b/locales/index.d.ts
index 483c470be8..08d132fa39 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -1134,6 +1134,10 @@ export interface Locale {
     "fileAttachedOnly": string;
     "showRepliesToOthersInTimeline": string;
     "hideRepliesToOthersInTimeline": string;
+    "showRepliesToOthersInTimelineAll": string;
+    "hideRepliesToOthersInTimelineAll": string;
+    "confirmShowRepliesAll": string;
+    "confirmHideRepliesAll": string;
     "externalServices": string;
     "impressum": string;
     "impressumUrl": string;
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 725d1e7a87..9b909b55c5 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -1131,6 +1131,10 @@ mutualFollow: "相互フォロー"
 fileAttachedOnly: "ファイル付きのみ"
 showRepliesToOthersInTimeline: "TLに他の人への返信を含める"
 hideRepliesToOthersInTimeline: "TLに他の人への返信を含めない"
+showRepliesToOthersInTimelineAll: "TLに現在フォロー中の人全員の返信を含めるようにする"
+hideRepliesToOthersInTimelineAll: "TLに現在フォロー中の人全員の返信を含めないようにする"
+confirmShowRepliesAll: "この操作は元の戻せません。本当にTLに現在フォロー中の人全員の返信を含めるようにしますか"
+confirmHideRepliesAll: "この操作は元の戻せません。本当にTLに現在フォロー中の人全員の返信を含めないようにしますか"
 externalServices: "外部サービス"
 impressum: "運営者情報"
 impressumUrl: "運営者情報URL"
diff --git a/packages/frontend/src/pages/settings/general.vue b/packages/frontend/src/pages/settings/general.vue
index 55de53fb07..2c12951b52 100644
--- a/packages/frontend/src/pages/settings/general.vue
+++ b/packages/frontend/src/pages/settings/general.vue
@@ -29,6 +29,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<div class="_gaps_s">
 			<MkSwitch v-model="showFixedPostForm">{{ i18n.ts.showFixedPostForm }}</MkSwitch>
 			<MkSwitch v-model="showFixedPostFormInChannel">{{ i18n.ts.showFixedPostFormInChannel }}</MkSwitch>
+			<MkButton danger @click="updateRepliesAll(true)"><i class="ti ti-messages"></i> {{ i18n.ts.showRepliesToOthersInTimelineAll }}</MkButton>
+			<MkButton danger @click="updateRepliesAll(false)"><i class="ti ti-messages-off"></i> {{ i18n.ts.hideRepliesToOthersInTimelineAll }}</MkButton>
 			<MkFolder>
 				<template #label>{{ i18n.ts.pinnedList }}</template>
 				<!-- 複数ピン止め管理できるようにしたいけどめんどいので一旦ひとつのみ -->
@@ -202,6 +204,7 @@ import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { miLocalStorage } from '@/local-storage.js';
 import { globalEvents } from '@/events';
 import { claimAchievement } from '@/scripts/achievements.js';
+import {confirm} from "@/os.js";
 
 const lang = ref(miLocalStorage.getItem('lang'));
 const fontSize = ref(miLocalStorage.getItem('fontSize'));
@@ -330,6 +333,14 @@ async function setPinnedList() {
 	defaultStore.set('pinnedUserLists', [list]);
 }
 
+async function updateRepliesAll(withReplies: boolean) {
+	os.confirm({
+		type: 'warning',
+		text: withReplies ? i18n.ts.confirmShowRepliesAll : i18n.ts.confirmHideRepliesAll,
+	})
+	await os.api('following/update-all', { withReplies });
+}
+
 function removePinnedList() {
 	defaultStore.set('pinnedUserLists', []);
 }