diff --git a/locales/index.d.ts b/locales/index.d.ts
index 1c97a3d944..11f6f2923f 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -5323,6 +5323,11 @@ export interface Locale extends ILocale {
              * チュートリアルを完了すると実績が解除されます。
              */
             "takesAbout": ParameterizedString<"min">;
+            /**
+             * このサーバーの管理者は新規ユーザーにチュートリアルを完了することを義務付けています。
+             * チュートリアルを完了するまでMisskeyを使い始めることはできません。
+             */
+            "adminForcesToTakeTutorial": string;
         };
         "_onboardingDone": {
             /**
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index dcd9e77aa6..4aeeabf2a0 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -1340,6 +1340,7 @@ _initialTutorial:
     welcomeToX: "ようこそ、{name}へ！"
     description: "「{name}に登録したは良いものの、どう使えばいいか分からない…💦」といったことを防ぐために、まずはMisskeyの基本的な使い方を学びましょう。"
     takesAbout: "このチュートリアルの所要時間は{min}分程度です。\nチュートリアルを完了すると実績が解除されます。"
+    adminForcesToTakeTutorial: "このサーバーの管理者は新規ユーザーにチュートリアルを完了することを義務付けています。\nチュートリアルを完了するまでMisskeyを使い始めることはできません。"
   _onboardingDone:
     description: "お疲れ様でした！次のステップに進んで、{name}をもっと楽しめるようにしましょう。"
     backToOriginalPath: "元のページに戻る"
diff --git a/packages/frontend/assets/tutorial/reaction.png b/packages/frontend/assets/tutorial/reaction.png
new file mode 100644
index 0000000000..c09fda3444
Binary files /dev/null and b/packages/frontend/assets/tutorial/reaction.png differ
diff --git a/packages/frontend/src/boot/common.ts b/packages/frontend/src/boot/common.ts
index 250f71120d..7a8011bb23 100644
--- a/packages/frontend/src/boot/common.ts
+++ b/packages/frontend/src/boot/common.ts
@@ -119,8 +119,8 @@ export async function common(createVue: () => App<Element>) {
 	await defaultStore.ready;
 	await deckStore.ready;
 
-	// 2024年3月1日JST以降に作成されたアカウントで、チュートリアルを完了していない通常ユーザーの場合、チュートリアルにリダイレクト
-	if (!instance.canSkipInitialTutorial && $i && !iAmModerator && new Date($i.createdAt).getTime() >= 1709218800000 && !claimedAchievements.includes('tutorialCompleted') && !location.pathname.startsWith('/onboarding') && !location.pathname.startsWith('/signup-complete')) {
+	// 2024年4月1日JST以降に作成されたアカウントで、チュートリアルを完了していない通常ユーザーの場合、チュートリアルにリダイレクト
+	if (!instance.canSkipInitialTutorial && $i && !iAmModerator && new Date($i.createdAt).getTime() >= 1711897200000 && !claimedAchievements.includes('tutorialCompleted') && !location.pathname.startsWith('/onboarding') && !location.pathname.startsWith('/signup-complete')) {
 		const param = new URLSearchParams();
 		param.set('redirected_from', location.pathname + location.search + location.hash);
 		location.replace('/onboarding?' + param.toString());
diff --git a/packages/frontend/src/components/MkPostForm.vue b/packages/frontend/src/components/MkPostForm.vue
index e03faeaf55..04458d46a1 100644
--- a/packages/frontend/src/components/MkPostForm.vue
+++ b/packages/frontend/src/components/MkPostForm.vue
@@ -537,6 +537,8 @@ function pushVisibleUser(user: Misskey.entities.UserDetailed) {
 }
 
 function addVisibleUser() {
+	if (props.mock) return;
+
 	os.selectUser().then(user => {
 		pushVisibleUser(user);
 
@@ -861,6 +863,8 @@ function cancel() {
 }
 
 function insertMention() {
+	if (props.mock) return;
+
 	os.selectUser({ localOnly: localOnly.value, includeSelf: true }).then(user => {
 		insertTextAtCursor(textareaEl.value, '@' + Misskey.acct.toString(user) + ' ');
 	});
diff --git a/packages/frontend/src/components/MkTutorial.FollowUsers.vue b/packages/frontend/src/components/MkTutorial.FollowUsers.vue
index df2a8150e1..4ded1e3f40 100644
--- a/packages/frontend/src/components/MkTutorial.FollowUsers.vue
+++ b/packages/frontend/src/components/MkTutorial.FollowUsers.vue
@@ -5,15 +5,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <div class="_gaps">
-	<div style="word-break: auto-phrase; text-align: center;">{{ i18n.ts._initialTutorial._followUsers.description1 }}</div>
-	<div style="word-break: auto-phrase; text-align: center;">{{ i18n.ts._initialTutorial._followUsers.description2 }}</div>
+	<div style="word-break: auto-phrase; text-align: center;">{{ i18n.ts._initialTutorial._followUsers.description1 }}<br>{{ i18n.ts._initialTutorial._followUsers.description2 }}</div>
 
 	<MkFolder :defaultOpen="true">
 		<template #label>{{ i18n.ts.recommended }}</template>
 
 		<MkPagination :pagination="pinnedUsers">
 			<template #default="{ items }">
-				<div :class="$style.users">
+				<div class="_gaps_s">
 					<XUser v-for="item in (items as Misskey.entities.UserDetailed[])" :key="item.id" :user="item"/>
 				</div>
 			</template>
@@ -25,7 +24,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 		<MkPagination :pagination="popularUsers">
 			<template #default="{ items }">
-				<div :class="$style.users">
+				<div class="_gaps_s">
 					<XUser v-for="item in (items as Misskey.entities.UserDetailed[])" :key="item.id" :user="item"/>
 				</div>
 			</template>
@@ -58,12 +57,3 @@ const popularUsers: Paging = {
 	},
 };
 </script>
-
-<style lang="scss" module>
-.users {
-	display: grid;
-	grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
-	grid-gap: var(--margin);
-	justify-content: center;
-}
-</style>
diff --git a/packages/frontend/src/components/MkTutorial.Note.vue b/packages/frontend/src/components/MkTutorial.Note.vue
index 09f7be92fb..d7dc5df40c 100644
--- a/packages/frontend/src/components/MkTutorial.Note.vue
+++ b/packages/frontend/src/components/MkTutorial.Note.vue
@@ -15,7 +15,10 @@ SPDX-License-Identifier: AGPL-3.0-only
 	</div>
 </div>
 <div v-else-if="phase === 'howToReact'" class="_gaps">
-	<div style="word-break: auto-phrase; text-align: center; padding: 0 16px;">{{ i18n.ts._initialTutorial._reaction.description }}</div>
+	<div class="_gaps_s">
+		<div style="word-break: auto-phrase; text-align: center; padding: 0 16px;">{{ i18n.ts._initialTutorial._reaction.description }}</div>
+		<img :class="$style.image" src="/client-assets/tutorial/reaction.png"/>
+	</div>
 	<div>{{ i18n.ts._initialTutorial._reaction.letsTryReacting }}</div>
 	<MkNote :class="$style.exampleNoteRoot" :note="exampleNote" :mock="true" @reaction="addReaction" @removeReaction="removeReaction"/>
 	<div v-if="onceReacted"><b style="color: var(--accent);"><i class="ti ti-check"></i> {{ i18n.ts._initialTutorial.wellDone }}</b> {{ i18n.ts._initialTutorial._reaction.reactNotification }}<br>{{ i18n.ts._initialTutorial._reaction.reactDone }}</div>
@@ -78,7 +81,11 @@ function addReaction(emoji) {
 	emit('reacted');
 	exampleNote.reactions[emoji] = 1;
 	exampleNote.myReaction = emoji;
-	doNotification(emoji);
+
+	// 通知音も鳴らしたいのでちょっと遅らせる
+	setTimeout(() => {
+		doNotification(emoji);
+	}, 200);
 }
 
 function doNotification(emoji: string): void {
@@ -114,4 +121,10 @@ function removeReaction(emoji) {
 	height: 1px;
 	background: var(--divider);
 }
+
+.image {
+	max-width: 300px;
+	margin: 0 auto;
+	border-radius: var(--radius);
+}
 </style>
diff --git a/packages/frontend/src/components/MkTutorial.PrivacySettings.vue b/packages/frontend/src/components/MkTutorial.PrivacySettings.vue
index 7d76e1036c..19b659865f 100644
--- a/packages/frontend/src/components/MkTutorial.PrivacySettings.vue
+++ b/packages/frontend/src/components/MkTutorial.PrivacySettings.vue
@@ -11,6 +11,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 	<MkSwitch v-model="isLocked">{{ i18n.ts.makeFollowManuallyApprove }}<template #caption>{{ i18n.ts.lockedAccountInfo }}</template></MkSwitch>
 
+	<MkSwitch v-model="publicReactions">{{ i18n.ts.makeReactionsPublic }}<template #caption>{{ i18n.ts.makeReactionsPublicDescription }}</template></MkSwitch>
+
 	<MkSwitch v-model="hideOnlineStatus">{{ i18n.ts.hideOnlineStatus }}<template #caption>{{ i18n.ts.hideOnlineStatusDescription }}</template></MkSwitch>
 
 	<MkSwitch v-model="noCrawle">{{ i18n.ts.noCrawle }}<template #caption>{{ i18n.ts.noCrawleDescription }}</template></MkSwitch>
@@ -27,15 +29,20 @@ import { i18n } from '@/i18n.js';
 import MkSwitch from '@/components/MkSwitch.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import { misskeyApi } from '@/scripts/misskey-api.js';
+import { signinRequired } from '@/account.js';
 
-const isLocked = ref(false);
-const hideOnlineStatus = ref(false);
-const noCrawle = ref(false);
-const preventAiLearning = ref(true);
+const $i = signinRequired();
 
-watch([isLocked, hideOnlineStatus, noCrawle, preventAiLearning], () => {
+const isLocked = ref($i.isLocked);
+const publicReactions = ref($i.publicReactions);
+const hideOnlineStatus = ref($i.hideOnlineStatus);
+const noCrawle = ref($i.noCrawle);
+const preventAiLearning = ref($i.preventAiLearning);
+
+watch([isLocked, publicReactions, hideOnlineStatus, noCrawle, preventAiLearning], () => {
 	misskeyApi('i/update', {
 		isLocked: !!isLocked.value,
+		publicReactions: !!publicReactions.value,
 		hideOnlineStatus: !!hideOnlineStatus.value,
 		noCrawle: !!noCrawle.value,
 		preventAiLearning: !!preventAiLearning.value,
diff --git a/packages/frontend/src/components/MkTutorial.vue b/packages/frontend/src/components/MkTutorial.vue
index 864ecf6e84..7dd146461a 100644
--- a/packages/frontend/src/components/MkTutorial.vue
+++ b/packages/frontend/src/components/MkTutorial.vue
@@ -43,7 +43,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 					<MkSpacer :marginMin="20" :marginMax="28" :class="$style.pageMain">
 						<div class="_gaps">
 							<XNote phase="howToReact" @reacted="isReactionTutorialPushed = true"/>
-							<b v-if="!isReactionTutorialPushed">{{ i18n.ts._initialTutorial._reaction.reactToContinue }}</b>
+							<b v-if="!isReactionTutorialPushed" :class="$style.actionWaitText">{{ i18n.ts._initialTutorial._reaction.reactToContinue }}</b>
 						</div>
 					</MkSpacer>
 				</div>
@@ -74,7 +74,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 					<MkSpacer :marginMin="20" :marginMax="28" :class="$style.pageMain">
 						<div class="_gaps">
 							<XSensitive @succeeded="isSensitiveTutorialSucceeded = true"/>
-							<b v-if="!isSensitiveTutorialSucceeded">{{ i18n.ts._initialTutorial._howToMakeAttachmentsSensitive.doItToContinue }}</b>
+							<b v-if="!isSensitiveTutorialSucceeded" :class="$style.actionWaitText">{{ i18n.ts._initialTutorial._howToMakeAttachmentsSensitive.doItToContinue }}</b>
 						</div>
 					</MkSpacer>
 				</div>
@@ -299,6 +299,10 @@ function prev() {
 	margin-bottom: 56px;
 }
 
+.actionWaitText {
+	color: var(--error);
+}
+
 .pageFooter {
 	position: sticky;
 	bottom: 0;
diff --git a/packages/frontend/src/pages/onboarding.vue b/packages/frontend/src/pages/onboarding.vue
index 5de033aeb5..2b703fa4de 100644
--- a/packages/frontend/src/pages/onboarding.vue
+++ b/packages/frontend/src/pages/onboarding.vue
@@ -55,6 +55,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 								<div>{{ i18n.tsx._initialTutorial._onboardingLanding.description({ name: instance.name ?? host }) }}</div>
 								<MkButton large primary rounded gradate style="margin: 16px auto 0;" data-cy-user-setup-continue @click="next">{{ i18n.ts.start }} <i class="ti ti-arrow-right"></i></MkButton>
 								<MkButton v-if="instance.canSkipInitialTutorial" transparent rounded style="margin: 0 auto;" data-cy-user-setup-close @click="cancel">{{ i18n.ts.later }}</MkButton>
+								<MkInfo v-else warn style="width: fit-content; margin: 0 auto; text-align: start; white-space: pre-wrap;">{{ i18n.ts._initialTutorial._onboardingLanding.adminForcesToTakeTutorial }}</MkInfo>
 								<MkInfo style="width: fit-content; margin: 0 auto; text-align: start; white-space: pre-wrap;">{{ i18n.tsx._initialTutorial._onboardingLanding.takesAbout({ min: 3 }) }}</MkInfo>
 							</div>
 						</MkSpacer>