diff --git a/packages/frontend/src/components/MkTutorial.FollowUsers.vue b/packages/frontend/src/components/MkTutorial.FollowUsers.vue
index 4ded1e3f40..de034b7c56 100644
--- a/packages/frontend/src/components/MkTutorial.FollowUsers.vue
+++ b/packages/frontend/src/components/MkTutorial.FollowUsers.vue
@@ -39,6 +39,7 @@ import { i18n } from '@/i18n.js';
 import MkFolder from '@/components/MkFolder.vue';
 import XUser from '@/components/MkTutorial.FollowUsers.UserCard.vue';
 import MkPagination, { type Paging } from '@/components/MkPagination.vue';
+import type { TutorialPageCommonExpose } from '@/components/MkTutorial.vue';
 
 const pinnedUsers: Paging = {
 	endpoint: 'pinned-users',
@@ -56,4 +57,8 @@ const popularUsers: Paging = {
 		sort: '+follower',
 	},
 };
+
+defineExpose<TutorialPageCommonExpose>({
+	canContinue: true,
+});
 </script>
diff --git a/packages/frontend/src/components/MkTutorial.Note.vue b/packages/frontend/src/components/MkTutorial.Note.vue
index d7dc5df40c..408a9c6e5f 100644
--- a/packages/frontend/src/components/MkTutorial.Note.vue
+++ b/packages/frontend/src/components/MkTutorial.Note.vue
@@ -22,25 +22,23 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<div>{{ i18n.ts._initialTutorial._reaction.letsTryReacting }}</div>
 	<MkNote :class="$style.exampleNoteRoot" :note="exampleNote" :mock="true" @reaction="addReaction" @removeReaction="removeReaction"/>
 	<div v-if="onceReacted"><b style="color: var(--accent);"><i class="ti ti-check"></i> {{ i18n.ts._initialTutorial.wellDone }}</b> {{ i18n.ts._initialTutorial._reaction.reactNotification }}<br>{{ i18n.ts._initialTutorial._reaction.reactDone }}</div>
+	<div v-else><b :class="$style.actionWaitText">{{ i18n.ts._initialTutorial._reaction.reactToContinue }}</b></div>
 </div>
 </template>
 
 <script setup lang="ts">
 import * as Misskey from 'misskey-js';
-import { ref, reactive } from 'vue';
+import { ref, reactive, computed } from 'vue';
 import { i18n } from '@/i18n.js';
 import { globalEvents } from '@/events.js';
 import { $i } from '@/account.js';
 import MkNote from '@/components/MkNote.vue';
+import type { TutorialPageCommonExpose } from '@/components/MkTutorial.vue';
 
 const props = defineProps<{
 	phase: 'aboutNote' | 'howToReact';
 }>();
 
-const emit = defineEmits<{
-	(ev: 'reacted'): void;
-}>();
-
 const exampleNote = reactive<Misskey.entities.Note>({
 	id: '0000000000',
 	createdAt: '2019-04-14T17:30:49.181Z',
@@ -74,11 +72,20 @@ const exampleNote = reactive<Misskey.entities.Note>({
 	replyId: null,
 	renoteId: null,
 });
+
 const onceReacted = ref<boolean>(false);
 
+const canContinue = computed(() => {
+	if (props.phase === 'aboutNote') {
+		return true;
+	} else if (props.phase === 'howToReact') {
+		return onceReacted.value;
+	}
+	return true;
+});
+
 function addReaction(emoji) {
 	onceReacted.value = true;
-	emit('reacted');
 	exampleNote.reactions[emoji] = 1;
 	exampleNote.myReaction = emoji;
 
@@ -108,6 +115,10 @@ function removeReaction(emoji) {
 	delete exampleNote.reactions[emoji];
 	exampleNote.myReaction = undefined;
 }
+
+defineExpose<TutorialPageCommonExpose>({
+	canContinue,
+});
 </script>
 
 <style lang="scss" module>
@@ -127,4 +138,8 @@ function removeReaction(emoji) {
 	margin: 0 auto;
 	border-radius: var(--radius);
 }
+
+.actionWaitText {
+	color: var(--error);
+}
 </style>
diff --git a/packages/frontend/src/components/MkTutorial.PostNote.vue b/packages/frontend/src/components/MkTutorial.PostNote.vue
index d30aab2cec..69ec279943 100644
--- a/packages/frontend/src/components/MkTutorial.PostNote.vue
+++ b/packages/frontend/src/components/MkTutorial.PostNote.vue
@@ -42,6 +42,7 @@ import MkNote from '@/components/MkNote.vue';
 import MkPostForm from '@/components/MkPostForm.vue';
 import MkFormSection from '@/components/form/section.vue';
 import MkInfo from '@/components/MkInfo.vue';
+import type { TutorialPageCommonExpose } from '@/components/MkTutorial.vue';
 
 const exampleCWNote = reactive<Misskey.entities.Note>({
 	id: '0000000000',
@@ -76,6 +77,10 @@ const exampleCWNote = reactive<Misskey.entities.Note>({
 	replyId: null,
 	renoteId: null,
 });
+
+defineExpose<TutorialPageCommonExpose>({
+	canContinue: true,
+});
 </script>
 
 <style lang="scss" module>
diff --git a/packages/frontend/src/components/MkTutorial.PrivacySettings.vue b/packages/frontend/src/components/MkTutorial.PrivacySettings.vue
index 19b659865f..f84264a53d 100644
--- a/packages/frontend/src/components/MkTutorial.PrivacySettings.vue
+++ b/packages/frontend/src/components/MkTutorial.PrivacySettings.vue
@@ -30,6 +30,7 @@ import MkSwitch from '@/components/MkSwitch.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import { misskeyApi } from '@/scripts/misskey-api.js';
 import { signinRequired } from '@/account.js';
+import type { TutorialPageCommonExpose } from '@/components/MkTutorial.vue';
 
 const $i = signinRequired();
 
@@ -48,6 +49,10 @@ watch([isLocked, publicReactions, hideOnlineStatus, noCrawle, preventAiLearning]
 		preventAiLearning: !!preventAiLearning.value,
 	});
 });
+
+defineExpose<TutorialPageCommonExpose>({
+	canContinue: true,
+});
 </script>
 
 <style lang="scss" module>
diff --git a/packages/frontend/src/components/MkTutorial.ProfileSettings.vue b/packages/frontend/src/components/MkTutorial.ProfileSettings.vue
index 012aa62e36..fd1641e328 100644
--- a/packages/frontend/src/components/MkTutorial.ProfileSettings.vue
+++ b/packages/frontend/src/components/MkTutorial.ProfileSettings.vue
@@ -40,6 +40,7 @@ import MkInfo from '@/components/MkInfo.vue';
 import { selectFile } from '@/scripts/select-file.js';
 import * as os from '@/os.js';
 import { signinRequired } from '@/account.js';
+import type { TutorialPageCommonExpose } from '@/components/MkTutorial.vue';
 
 const $i = signinRequired();
 
@@ -86,6 +87,10 @@ function setAvatar(ev: MouseEvent) {
 		$i.avatarUrl = i.avatarUrl;
 	});
 }
+
+defineExpose<TutorialPageCommonExpose>({
+	canContinue: true,
+});
 </script>
 
 <style lang="scss" module>
diff --git a/packages/frontend/src/components/MkTutorial.Sensitive.vue b/packages/frontend/src/components/MkTutorial.Sensitive.vue
index fe359e91bb..4dc7d13498 100644
--- a/packages/frontend/src/components/MkTutorial.Sensitive.vue
+++ b/packages/frontend/src/components/MkTutorial.Sensitive.vue
@@ -16,6 +16,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		@fileChangeSensitive="doSucceeded"
 	></MkPostForm>
 	<div v-if="onceSucceeded"><b style="color: var(--accent);"><i class="ti ti-check"></i> {{ i18n.ts._initialTutorial.wellDone }}</b> {{ i18n.ts._initialTutorial._howToMakeAttachmentsSensitive.sensitiveSucceeded }}</div>
+	<div v-else><b :class="$style.actionWaitText">{{ i18n.ts._initialTutorial._howToMakeAttachmentsSensitive.doItToContinue }}</b></div>
 	<MkFolder>
 		<template #label>{{ i18n.ts.previewNoteText }}</template>
 		<MkNote :mock="true" :note="exampleNote" :class="$style.exampleRoot"></MkNote>
@@ -32,17 +33,13 @@ import MkFolder from '@/components/MkFolder.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import MkNote from '@/components/MkNote.vue';
 import { $i } from '@/account.js';
-
-const emit = defineEmits<{
-	(ev: 'succeeded'): void;
-}>();
+import type { TutorialPageCommonExpose } from '@/components/MkTutorial.vue';
 
 const onceSucceeded = ref<boolean>(false);
 
 function doSucceeded(fileId: string, to: boolean) {
 	if (fileId === exampleNote.fileIds?.[0] && to) {
 		onceSucceeded.value = true;
-		emit('succeeded');
 	}
 }
 
@@ -87,6 +84,9 @@ const exampleNote = reactive<Misskey.entities.Note>({
 	renoteId: null,
 });
 
+defineExpose<TutorialPageCommonExpose>({
+	canContinue: onceSucceeded,
+});
 </script>
 
 <style lang="scss" module>
@@ -143,4 +143,8 @@ const exampleNote = reactive<Misskey.entities.Note>({
 	position: relative;
 	line-height: 40px;
 }
+
+.actionWaitText {
+	color: var(--error);
+}
 </style>
diff --git a/packages/frontend/src/components/MkTutorial.Timeline.vue b/packages/frontend/src/components/MkTutorial.Timeline.vue
index 3d2c06fd1f..7e61ad3158 100644
--- a/packages/frontend/src/components/MkTutorial.Timeline.vue
+++ b/packages/frontend/src/components/MkTutorial.Timeline.vue
@@ -27,6 +27,11 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script setup lang="ts">
 import { i18n } from '@/i18n.js';
 import { basicTimelineIconClass, basicTimelineTypes } from '@/timelines.js';
+import type { TutorialPageCommonExpose } from '@/components/MkTutorial.vue';
+
+defineExpose<TutorialPageCommonExpose>({
+	canContinue: true,
+});
 </script>
 
 <style lang="scss" module>
diff --git a/packages/frontend/src/components/MkTutorial.vue b/packages/frontend/src/components/MkTutorial.vue
index f2ce5f3158..8cda02c624 100644
--- a/packages/frontend/src/components/MkTutorial.vue
+++ b/packages/frontend/src/components/MkTutorial.vue
@@ -8,7 +8,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<div v-if="showProgressbar" :class="$style.progressBar">
 		<div :class="$style.progressBarValue" :style="{ width: `${(page / MAX_PAGE) * 100}%` }"></div>
 	</div>
-	<div v-if="showProgressbar && page !== 0 && page !== MAX_PAGE" :class="$style.progressText">{{ page }}/{{ MAX_PAGE - 1 }}</div>
+	<div v-if="showProgressbar && page !== 0 && page !== MAX_PAGE" :class="$style.progressText">{{ page }}/{{ MAX_PAGE }}</div>
 	<div :class="$style.tutorialMain">
 		<Transition
 			mode="out-in"
@@ -16,6 +16,9 @@ SPDX-License-Identifier: AGPL-3.0-only
 			:leaveActiveClass="$style.transition_x_leaveActive"
 			:enterFromClass="$style.transition_x_enterFrom"
 			:leaveToClass="$style.transition_x_leaveTo"
+
+			@beforeLeave="areButtonsLocked = true"
+			@afterEnter="areButtonsLocked = false"
 		>
 			<slot v-if="page === 0" key="tutorialPage_0" name="welcome" :close="() => emit('close', true)" :next="next">
 				<div :class="$style.centerPage">
@@ -31,71 +34,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 					</MkSpacer>
 				</div>
 			</slot>
-			<div v-else-if="page === 1" key="tutorialPage_1" :class="$style.pageContainer">
-				<div :class="$style.pageRoot">
-					<MkSpacer :marginMin="20" :marginMax="28" :class="$style.pageMain">
-						<XProfileSettings/>
-					</MkSpacer>
-				</div>
-			</div>
-			<div v-else-if="page === 2" key="tutorialPage_2" :class="$style.pageContainer">
-				<div :class="$style.pageRoot">
-					<MkSpacer :marginMin="20" :marginMax="28" :class="$style.pageMain">
-						<XNote phase="aboutNote"/>
-					</MkSpacer>
-				</div>
-			</div>
-			<div v-else-if="page === 3" key="tutorialPage_3" :class="$style.pageContainer">
-				<div :class="$style.pageRoot">
-					<MkSpacer :marginMin="20" :marginMax="28" :class="$style.pageMain">
-						<div class="_gaps">
-							<XNote phase="howToReact" @reacted="isReactionTutorialPushed = true"/>
-							<b v-if="!isReactionTutorialPushed" :class="$style.actionWaitText">{{ i18n.ts._initialTutorial._reaction.reactToContinue }}</b>
-						</div>
-					</MkSpacer>
-				</div>
-			</div>
-			<div v-else-if="page === 4" key="tutorialPage_4" :class="$style.pageContainer">
-				<div :class="$style.pageRoot">
-					<MkSpacer :marginMin="20" :marginMax="28" :class="$style.pageMain">
-						<XTimeline/>
-					</MkSpacer>
-				</div>
-			</div>
-			<div v-else-if="page === 5" key="tutorialPage_5" :class="$style.pageContainer">
-				<div :class="$style.pageRoot">
-					<MkSpacer :marginMin="20" :marginMax="28" :class="$style.pageMain">
-						<XFollowUsers/>
-					</MkSpacer>
-				</div>
-			</div>
-			<div v-else-if="page === 6" key="tutorialPage_6" :class="$style.pageContainer">
-				<div :class="$style.pageRoot">
-					<MkSpacer :marginMin="20" :marginMax="28" :class="$style.pageMain">
-						<XPostNote/>
-					</MkSpacer>
-				</div>
-			</div>
-			<div v-else-if="page === 7" key="tutorialPage_7" :class="$style.pageContainer">
-				<div :class="$style.pageRoot">
-					<MkSpacer :marginMin="20" :marginMax="28" :class="$style.pageMain">
-						<div class="_gaps">
-							<XSensitive @succeeded="isSensitiveTutorialSucceeded = true"/>
-							<b v-if="!isSensitiveTutorialSucceeded" :class="$style.actionWaitText">{{ i18n.ts._initialTutorial._howToMakeAttachmentsSensitive.doItToContinue }}</b>
-						</div>
-					</MkSpacer>
-				</div>
-			</div>
-			<div v-else-if="page === 8" key="tutorialPage_8" :class="$style.pageContainer">
-				<div :class="$style.pageRoot">
-					<MkSpacer :marginMin="20" :marginMax="28" :class="$style.pageMain">
-						<div class="_gaps">
-							<XPrivacySettings/>
-						</div>
-					</MkSpacer>
-				</div>
-			</div>
-			<slot v-else-if="page === 9" key="tutorialPage_9" name="finish" :close="() => emit('close')" :prev="prev">
+			<slot v-else-if="page === MAX_PAGE" :key="`tutorialPage_${MAX_PAGE}`" name="finish" :close="() => emit('close')" :prev="prev">
 				<div :class="$style.centerPage">
 					<MkAnimBg style="position: absolute; top: 0;" :scale="1.5"/>
 					<MkSpacer :marginMin="20" :marginMax="28">
@@ -110,18 +49,29 @@ SPDX-License-Identifier: AGPL-3.0-only
 							<div style="text-align: center;">{{ i18n.ts._initialTutorial._done.youCanReferTutorialBy }}</div>
 							<div style="text-align: center;">{{ i18n.tsx._initialTutorial._done.haveFun({ name: instance.name ?? host }) }}</div>
 							<div class="_buttonsCenter" style="margin-top: 16px;">
-								<MkButton v-if="initialPage !== 4" rounded @click="prev"><i class="ti ti-arrow-left"></i> {{ i18n.ts.goBack }}</MkButton>
+								<MkButton rounded @click="prev"><i class="ti ti-arrow-left"></i> {{ i18n.ts.goBack }}</MkButton>
 								<MkButton rounded primary gradate @click="emit('close')">{{ i18n.ts.close }}</MkButton>
 							</div>
 						</div>
 					</MkSpacer>
 				</div>
 			</slot>
+			<div v-else :key="`tutorialPage_${page}`" :class="$style.pageContainer">
+				<div :class="$style.pageRoot">
+					<MkSpacer :marginMin="20" :marginMax="28" :class="$style.pageMain">
+						<component
+							:is="componentsDef[page - 1].component"
+							ref="tutorialPageEl"
+							v-bind="componentsDef[page - 1].props"
+						/>
+					</MkSpacer>
+				</div>
+			</div>
 		</Transition>
 	</div>
 	<div :class="[$style.pageFooter, { [$style.pageFooterShown]: (page > 0 && page < MAX_PAGE) }]">
 		<div class="_buttonsCenter">
-			<MkButton v-if="initialPage !== page" rounded @click="prev"><i class="ti ti-arrow-left"></i> {{ i18n.ts.goBack }}</MkButton>
+			<MkButton v-if="initialPage !== page" :disabled="areButtonsLocked" rounded @click="prev"><i class="ti ti-arrow-left"></i> {{ i18n.ts.goBack }}</MkButton>
 			<MkButton primary rounded gradate :disabled="!canContinue" data-cy-user-setup-continue @click="next">{{ i18n.ts.continue }} <i class="ti ti-arrow-right"></i></MkButton>
 		</div>
 	</div>
@@ -129,14 +79,76 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 
 <script lang="ts">
+import type { Ref } from 'vue';
+import { i18n } from '@/i18n.js';
 
-// チュートリアルの枚数を増やしたら必ず変更すること！！
-export const MAX_PAGE = 9;
+/**
+ * 【ページの足し方】
+ *
+ * 1. ページコンポーネントを作成
+ *    このとき、TutorialPageCommonExposeを実装すること
+ *    （canContinueを変化させることで、次へボタンが押されるのをブロックできます。ギミックがないページはtrueでOK。）
+ * 2. tutorialBodyPagesDefにページのアイコン・タイトル・区分を追加
+ *    （区分がsetupの場合はwithSetup == falseのときにスキップされます）
+ * 3. componentsDefにページのコンポーネントを追加（順番を対応させること）
+ */
 
+/** チュートリアルページ用Expose */
+export type TutorialPageCommonExpose = {
+	canContinue: boolean | Ref<boolean>;
+};
+
+/** ページ メタデータ */
+export type TutorialPage = {
+	icon?: string;
+	type: 'tutorial' | 'setup';
+	title: string;
+};
+
+/**
+ * はじめと終わり以外のページ メタデータ
+ *
+ * （コンポーネントはsetup内で定義しています）
+ */
+export const tutorialBodyPagesDef = [{
+	icon: 'ti ti-user',
+	type: 'setup',
+	title: i18n.ts._initialTutorial._profileSettings.title,
+}, {
+	icon: 'ti ti-pencil',
+	type: 'tutorial',
+	title: i18n.ts._initialTutorial._note.title,
+}, {
+	icon: 'ti ti-mood-smile',
+	type: 'tutorial',
+	title: i18n.ts._initialTutorial._reaction.title,
+}, {
+	icon: 'ti ti-home',
+	type: 'tutorial',
+	title: i18n.ts._initialTutorial._timeline.title,
+}, {
+	icon: 'ti ti-user-add',
+	type: 'setup',
+	title: i18n.ts.follow,
+}, {
+	icon: 'ti ti-pencil-plus',
+	type: 'tutorial',
+	title: i18n.ts._initialTutorial._postNote.title,
+}, {
+	icon: 'ti ti-eye-exclamation',
+	type: 'tutorial',
+	title: i18n.ts._initialTutorial._howToMakeAttachmentsSensitive.title,
+}, {
+	icon: 'ti ti-lock',
+	type: 'setup',
+	title: i18n.ts._initialTutorial._privacySettings.title,
+}] as const satisfies TutorialPage[];
+
+export const MAX_PAGE = tutorialBodyPagesDef.length + 1; // 0始まりにするために +2 - 1 = +1
 </script>
 
 <script lang="ts" setup>
-import { ref, computed, watch } from 'vue';
+import { ref, shallowRef, isRef, computed, watch } from 'vue';
 import MkButton from '@/components/MkButton.vue';
 import XProfileSettings from '@/components/MkTutorial.ProfileSettings.vue';
 import XNote from '@/components/MkTutorial.Note.vue';
@@ -146,11 +158,13 @@ import XPostNote from '@/components/MkTutorial.PostNote.vue';
 import XSensitive from '@/components/MkTutorial.Sensitive.vue';
 import XPrivacySettings from '@/components/MkTutorial.PrivacySettings.vue';
 import MkAnimBg from '@/components/MkAnimBg.vue';
-import { i18n } from '@/i18n.js';
 import { instance } from '@/instance.js';
 import { host } from '@/config.js';
 import { claimAchievement } from '@/scripts/achievements.js';
 
+import type { Component } from 'vue';
+import type { Tuple } from '@/type.js';
+
 const props = defineProps<{
 	initialPage?: number;
 	showProgressbar?: boolean;
@@ -166,35 +180,95 @@ const emit = defineEmits<{
 // テストの場合は全インタラクションをスキップする
 const isTest = (import.meta.env.MODE === 'test');
 
+type ComponentDef = {
+	component: Component;
+	props?: Record<string, unknown>;
+};
+
+/**
+ * はじめと終わり以外のページ コンポーネント
+ *
+ * （メタデータは上の方で定義しています）
+ */
+const componentsDef: Tuple<ComponentDef, typeof tutorialBodyPagesDef.length> = [
+	{ component: XProfileSettings },
+	{ component: XNote, props: { phase: 'aboutNote' } },
+	{ component: XNote, props: { phase: 'howToReact' } },
+	{ component: XTimeline },
+	{ component: XFollowUsers },
+	{ component: XPostNote },
+	{ component: XSensitive },
+	{ component: XPrivacySettings },
+] as const satisfies ComponentDef[];
+
 // eslint-disable-next-line vue/no-setup-props-destructure
 const page = ref(props.initialPage ?? 0);
 
+const currentPageDef = computed(() => {
+	if (page.value > 0 && page.value < MAX_PAGE - 1) {
+		return tutorialBodyPagesDef[page.value - 1];
+	} else {
+		return null;
+	}
+});
+
 watch(page, (to) => {
 	if (to === MAX_PAGE) {
 		claimAchievement('tutorialCompleted');
 	}
 });
 
-const isReactionTutorialPushed = ref<boolean>(isTest);
-const isSensitiveTutorialSucceeded = ref<boolean>(isTest);
+// ページコンポーネントのexposeを受け取る
+const tutorialPageEl = shallowRef<TutorialPageCommonExpose | null>(null);
+
+// トランジション中に連打されて進んじゃうのを防ぐ
+const areButtonsLocked = ref(false);
 
 const canContinue = computed(() => {
-	if (page.value === 3) {
-		return isReactionTutorialPushed.value;
-	} else if (page.value === 7) {
-		return isSensitiveTutorialSucceeded.value;
+	if (isTest) {
+		return true;
+	}
+
+	if (areButtonsLocked.value) {
+		return false;
+	}
+
+	if (tutorialPageEl.value) {
+		if (isRef(tutorialPageEl.value.canContinue)) {
+			return tutorialPageEl.value.canContinue.value;
+		} else {
+			return tutorialPageEl.value.canContinue;
+		}
 	} else {
 		return true;
 	}
 });
 
 function next() {
-	if (page.value === 0 && !props.withSetup) {
-		page.value += 2;
-	} else if (page.value === 4 && !props.withSetup) {
-		page.value += 2;
-	} else if (page.value === 7 && !props.withSetup) {
-		page.value += 2;
+	if (areButtonsLocked.value) {
+		return;
+	} else {
+		areButtonsLocked.value = true;
+	}
+
+	const bodyPagesDefIndex = page.value - 1;
+
+	if (!props.withSetup && tutorialBodyPagesDef[bodyPagesDefIndex + 1].type === 'setup') {
+		function findNextTutorialPage() {
+			for (let i = bodyPagesDefIndex + 1; i < tutorialBodyPagesDef.length; i++) {
+				if (tutorialBodyPagesDef[i] == null) {
+					break;
+				}
+
+				if (tutorialBodyPagesDef[i].type === 'tutorial') {
+					return i + 1; // はじめの1ページ分足す
+				}
+			}
+
+			return MAX_PAGE;
+		}
+
+		page.value = findNextTutorialPage();
 	} else {
 		page.value++;
 	}
@@ -203,18 +277,41 @@ function next() {
 }
 
 function prev() {
-	if (page.value === 2 && !props.withSetup) {
-		page.value -= 2;
-	} else if (page.value === 6 && !props.withSetup) {
-		page.value -= 2;
-	} else if (page.value === 9 && !props.withSetup) {
-		page.value -= 2;
+	if (areButtonsLocked.value) {
+		return;
+	} else {
+		areButtonsLocked.value = true;
+	}
+
+	const bodyPagesDefIndex = page.value - 1;
+
+	if (!props.withSetup && tutorialBodyPagesDef[bodyPagesDefIndex - 1].type === 'setup') {
+		function findPrevTutorialPage() {
+			for (let i = bodyPagesDefIndex - 1; i >= 0; i--) {
+				if (tutorialBodyPagesDef[i] == null) {
+					break;
+				}
+
+				if (tutorialBodyPagesDef[i].type === 'tutorial') {
+					return i + 1; // はじめの1ページ分足す
+				}
+			}
+
+			return 0;
+		}
+
+		page.value = findPrevTutorialPage();
 	} else {
 		page.value--;
 	}
 
 	emit('pageChanged', page.value);
 }
+
+defineExpose({
+	page,
+	currentPageDef,
+});
 </script>
 
 <style lang="scss" module>
@@ -311,10 +408,6 @@ function prev() {
 	margin-bottom: 56px;
 }
 
-.actionWaitText {
-	color: var(--error);
-}
-
 .pageFooter {
 	position: sticky;
 	bottom: 0;
diff --git a/packages/frontend/src/components/MkTutorialDialog.vue b/packages/frontend/src/components/MkTutorialDialog.vue
index aec25b0417..5b5a6900b0 100644
--- a/packages/frontend/src/components/MkTutorialDialog.vue
+++ b/packages/frontend/src/components/MkTutorialDialog.vue
@@ -11,17 +11,16 @@ SPDX-License-Identifier: AGPL-3.0-only
 	@close="close(true)"
 	@closed="emit('closed')"
 >
-	<template v-if="page === 2" #header><i class="ti ti-pencil"></i> {{ i18n.ts._initialTutorial._note.title }}</template>
-	<template v-else-if="page === 3" #header><i class="ti ti-mood-smile"></i> {{ i18n.ts._initialTutorial._reaction.title }}</template>
-	<template v-else-if="page === 4" #header><i class="ti ti-home"></i> {{ i18n.ts._initialTutorial._timeline.title }}</template>
-	<template v-else-if="page === 6" #header><i class="ti ti-pencil-plus"></i> {{ i18n.ts._initialTutorial._postNote.title }}</template>
-	<template v-else-if="page === 7" #header><i class="ti ti-eye-exclamation"></i> {{ i18n.ts._initialTutorial._howToMakeAttachmentsSensitive.title }}</template>
+	<template v-if="tutorialEl?.currentPageDef" #header>
+		<i v-if="tutorialEl.currentPageDef.icon" :class="tutorialEl.currentPageDef.icon"></i>
+		{{ tutorialEl.currentPageDef.title }}
+	</template>
 	<template v-else #header>{{ i18n.ts._initialTutorial.title }}</template>
 
 	<XTutorial
+		ref="tutorialEl"
 		:initialPage="initialPage"
 		:skippable="true"
-		@pageChanged="handlePageChange"
 		@close="close"
 	/>
 </MkModalWindow>
@@ -34,7 +33,7 @@ import XTutorial from '@/components/MkTutorial.vue';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
 
-const props = defineProps<{
+defineProps<{
 	initialPage?: number;
 }>();
 
@@ -44,12 +43,7 @@ const emit = defineEmits<{
 
 const dialog = shallowRef<InstanceType<typeof MkModalWindow>>();
 
-// eslint-disable-next-line vue/no-setup-props-reactivity-loss
-const page = ref(props.initialPage ?? 0);
-
-function handlePageChange(to: number) {
-	page.value = to;
-}
+const tutorialEl = shallowRef<InstanceType<typeof XTutorial>>();
 
 async function close(skip?: boolean) {
 	if (skip) {
diff --git a/packages/frontend/src/pages/onboarding.vue b/packages/frontend/src/pages/onboarding.vue
index fc18c6e413..a01115383f 100644
--- a/packages/frontend/src/pages/onboarding.vue
+++ b/packages/frontend/src/pages/onboarding.vue
@@ -7,17 +7,11 @@ SPDX-License-Identifier: AGPL-3.0-only
 <div :class="[$style.onboardingRoot, { [$style.ready]: animationPhase >= 1 }]">
 	<MkAnimBg :class="$style.onboardingBg"/>
 	<div :class="[$style.onboardingContainer]">
-		<div :class="[$style.tutorialTitle, { [$style.showing]: (page !== 0) }]">
+		<div :class="[$style.tutorialTitle, { [$style.showing]: (tutorialEl?.page !== 0) }]">
 			<div :class="$style.text">
-				<span v-if="page === 1"><i class="ti ti-user-edit"></i> {{ i18n.ts._initialTutorial._profileSettings.title }}</span>
-				<span v-else-if="page === 2"><i class="ti ti-pencil"></i> {{ i18n.ts._initialTutorial._note.title }}</span>
-				<span v-else-if="page === 3"><i class="ti ti-mood-smile"></i> {{ i18n.ts._initialTutorial._reaction.title }}</span>
-				<span v-else-if="page === 4"><i class="ti ti-home"></i> {{ i18n.ts._initialTutorial._timeline.title }}</span>
-				<span v-else-if="page === 5"><i class="ti ti-user-plus"></i> {{ i18n.ts.follow }}</span>
-				<span v-else-if="page === 6"><i class="ti ti-pencil-plus"></i> {{ i18n.ts._initialTutorial._postNote.title }}</span>
-				<span v-else-if="page === 7"><i class="ti ti-eye-exclamation"></i> {{ i18n.ts._initialTutorial._howToMakeAttachmentsSensitive.title }}</span>
-				<span v-else-if="page === 8"><i class="ti ti-lock"></i> {{ i18n.ts.privacy }}</span>
-				<span v-else-if="page === MAX_PAGE"><!-- なんもなし --></span>
+				<span v-if="tutorialEl?.currentPageDef">
+					<i v-if="tutorialEl.currentPageDef.icon" :class="tutorialEl.currentPageDef.icon"></i> {{ tutorialEl.currentPageDef.title }}
+				</span>
 				<span v-else>{{ i18n.ts._initialTutorial.title }}</span>
 			</div>
 			<div v-if="instance.canSkipInitialTutorial" :class="$style.closeButton">
@@ -25,15 +19,13 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</div>
 		</div>
 		<MkTutorial
+			ref="tutorialEl"
 			:class="$style.tutorialRoot"
 			:showProgressbar="true"
 			:skippable="false"
 			:withSetup="true"
-			@pageChanged="pageChangeHandler"
 		>
 			<template #welcome="{ next }">
-				<!-- Tips for large-scale server admins: you should customize this slide for better branding -->
-				<!-- 大規模サーバーの管理者さんへ: このスライドの内容をサーバー独自でアレンジすると良さそうなのでやってみてね -->
 				<div ref="welcomePageRootEl" :class="$style.welcomePageRoot">
 					<canvas ref="confettiEl" :class="$style.welcomePageConfetti"></canvas>
 					<div
@@ -131,15 +123,11 @@ import { confirm as osConfirm } from '@/os.js';
 import MkAnimBg from '@/components/MkAnimBg.vue';
 import MkButton from '@/components/MkButton.vue';
 import MkInfo from '@/components/MkInfo.vue';
-import MkTutorial, { MAX_PAGE } from '@/components/MkTutorial.vue';
+import MkTutorial from '@/components/MkTutorial.vue';
 
 import FormLink from '@/components/form/link.vue';
 
-const page = ref(0);
-
-function pageChangeHandler(to: number) {
-	page.value = to;
-}
+const tutorialEl = shallowRef<InstanceType<typeof MkTutorial> | null>(null);
 
 // See: @/_boot_/common.ts L123 for details
 const query = new URLSearchParams(location.search);
diff --git a/packages/frontend/src/type.ts b/packages/frontend/src/type.ts
index 5ff27158d2..e1cea3936c 100644
--- a/packages/frontend/src/type.ts
+++ b/packages/frontend/src/type.ts
@@ -6,3 +6,6 @@
 export type WithRequired<T, K extends keyof T> = T & { [P in K]-?: T[P] };
 
 export type WithNonNullable<T, K extends keyof T> = T & { [P in K]-?: NonNullable<T[P]> };
+
+type _TupleOf<T, N extends number, R extends unknown[]> = R['length'] extends N ? R : _TupleOf<T, N, [T, ...R]>;
+export type Tuple<T, N extends number> = N extends N ? number extends N ? T[] : _TupleOf<T, N, []> : never;