diff --git a/packages/backend/migration/1696604572677-poll_vote_poll.js b/packages/backend/migration/1696604572677-poll_vote_poll.js
new file mode 100644
index 0000000000..da52904565
--- /dev/null
+++ b/packages/backend/migration/1696604572677-poll_vote_poll.js
@@ -0,0 +1,12 @@
+export class PollVotePoll1696604572677 {
+		name = 'PollVotePoll1696604572677';
+
+    async up(queryRunner) {
+			await queryRunner.query(`ALTER TABLE "poll_vote" ADD CONSTRAINT "FK_poll_vote_poll" FOREIGN KEY ("noteId") REFERENCES "poll"("noteId") ON DELETE CASCADE`);
+    }
+
+    async down(queryRunner) {
+			await queryRunner.query(`ALTER TABLE "poll_vote" DROP CONSTRAINT "FK_poll_vote_poll"`);
+    }
+
+}
diff --git a/packages/backend/src/core/CoreModule.ts b/packages/backend/src/core/CoreModule.ts
index fb07ecd7b3..da27da8c8d 100644
--- a/packages/backend/src/core/CoreModule.ts
+++ b/packages/backend/src/core/CoreModule.ts
@@ -33,6 +33,7 @@ import { MetaService } from './MetaService.js';
 import { MfmService } from './MfmService.js';
 import { ModerationLogService } from './ModerationLogService.js';
 import { NoteCreateService } from './NoteCreateService.js';
+import { NoteUpdateService } from './NoteUpdateService.js';
 import { NoteDeleteService } from './NoteDeleteService.js';
 import { NotePiningService } from './NotePiningService.js';
 import { NoteReadService } from './NoteReadService.js';
@@ -171,6 +172,7 @@ const $MetaService: Provider = { provide: 'MetaService', useExisting: MetaServic
 const $MfmService: Provider = { provide: 'MfmService', useExisting: MfmService };
 const $ModerationLogService: Provider = { provide: 'ModerationLogService', useExisting: ModerationLogService };
 const $NoteCreateService: Provider = { provide: 'NoteCreateService', useExisting: NoteCreateService };
+const $NoteUpdateService: Provider = { provide: 'NoteUpdateService', useExisting: NoteUpdateService };
 const $NoteDeleteService: Provider = { provide: 'NoteDeleteService', useExisting: NoteDeleteService };
 const $NotePiningService: Provider = { provide: 'NotePiningService', useExisting: NotePiningService };
 const $NoteReadService: Provider = { provide: 'NoteReadService', useExisting: NoteReadService };
@@ -311,6 +313,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		MfmService,
 		ModerationLogService,
 		NoteCreateService,
+		NoteUpdateService,
 		NoteDeleteService,
 		NotePiningService,
 		NoteReadService,
@@ -447,6 +450,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		$MfmService,
 		$ModerationLogService,
 		$NoteCreateService,
+		$NoteUpdateService,
 		$NoteDeleteService,
 		$NotePiningService,
 		$NoteReadService,
@@ -584,6 +588,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		MfmService,
 		ModerationLogService,
 		NoteCreateService,
+		NoteUpdateService,
 		NoteDeleteService,
 		NotePiningService,
 		NoteReadService,
@@ -719,6 +724,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		$MfmService,
 		$ModerationLogService,
 		$NoteCreateService,
+		$NoteUpdateService,
 		$NoteDeleteService,
 		$NotePiningService,
 		$NoteReadService,
diff --git a/packages/backend/src/core/GlobalEventService.ts b/packages/backend/src/core/GlobalEventService.ts
index 069b6e261a..0ef901c20b 100644
--- a/packages/backend/src/core/GlobalEventService.ts
+++ b/packages/backend/src/core/GlobalEventService.ts
@@ -117,7 +117,7 @@ export interface NoteEventTypes {
 	};
 	updated: {
 		cw: string | null;
-		text: string;
+		text: string | null;
 	};
 	reacted: {
 		reaction: string;
diff --git a/packages/backend/src/core/NoteCreateService.ts b/packages/backend/src/core/NoteCreateService.ts
index 5fc12ae8d1..7ef2658e51 100644
--- a/packages/backend/src/core/NoteCreateService.ts
+++ b/packages/backend/src/core/NoteCreateService.ts
@@ -115,6 +115,38 @@ class NotificationManager {
 	}
 }
 
+type MinimumUser = {
+	id: MiUser['id'];
+	host: MiUser['host'];
+	username: MiUser['username'];
+	uri: MiUser['uri'];
+};
+
+type Option = {
+	createdAt?: Date | null;
+	updatedAt?: Date | null;
+	name?: string | null;
+	text?: string | null;
+	reply?: MiNote | null;
+	renote?: MiNote | null;
+	files?: MiDriveFile[] | null;
+	poll?: IPoll | null;
+	event?: IEvent | null;
+	localOnly?: boolean | null;
+	reactionAcceptance?: MiNote['reactionAcceptance'];
+	disableRightClick?: boolean | null;
+	cw?: string | null;
+	visibility?: string;
+	visibleUsers?: MinimumUser[] | null;
+	channel?: MiChannel | null;
+	apMentions?: MinimumUser[] | null;
+	apHashtags?: string[] | null;
+	apEmojis?: string[] | null;
+	uri?: string | null;
+	url?: string | null;
+	app?: MiApp | null;
+};
+
 @Injectable()
 export class NoteCreateService implements OnApplicationShutdown {
 	#shutdownController = new AbortController();
diff --git a/packages/backend/src/core/NoteUpdateService.ts b/packages/backend/src/core/NoteUpdateService.ts
new file mode 100644
index 0000000000..d52c744b25
--- /dev/null
+++ b/packages/backend/src/core/NoteUpdateService.ts
@@ -0,0 +1,297 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and other misskey, cherrypick contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { setImmediate } from 'node:timers/promises';
+import { In, DataSource } from 'typeorm';
+import { Inject, Injectable, OnApplicationShutdown } from '@nestjs/common';
+import type { IMentionedRemoteUsers } from '@/models/Note.js';
+import { MiNote } from '@/models/Note.js';
+import type { NotesRepository, UsersRepository } from '@/models/_.js';
+import type { MiUser, MiLocalUser, MiRemoteUser } from '@/models/User.js';
+import { RelayService } from '@/core/RelayService.js';
+import { DI } from '@/di-symbols.js';
+import ActiveUsersChart from '@/core/chart/charts/active-users.js';
+import { GlobalEventService } from '@/core/GlobalEventService.js';
+import { UserEntityService } from '@/core/entities/UserEntityService.js';
+import { ApRendererService } from '@/core/activitypub/ApRendererService.js';
+import { ApDeliverManagerService } from '@/core/activitypub/ApDeliverManagerService.js';
+import { bindThis } from '@/decorators.js';
+import { DB_MAX_NOTE_TEXT_LENGTH } from '@/const.js';
+import { SearchService } from '@/core/SearchService.js';
+import { normalizeForSearch } from "@/misc/normalize-for-search.js";
+import { MiDriveFile } from '@/models/_.js';
+import { MiPoll, IPoll } from '@/models/Poll.js';
+import * as mfm from "cherrypick-mfm-js";
+import { concat } from "@/misc/prelude/array.js";
+import { extractHashtags } from "@/misc/extract-hashtags.js";
+import { extractCustomEmojisFromMfm } from "@/misc/extract-custom-emojis-from-mfm.js";
+import util from 'util';
+
+type MinimumUser = {
+	id: MiUser['id'];
+	host: MiUser['host'];
+	username: MiUser['username'];
+	uri: MiUser['uri'];
+};
+
+type Option = {
+	updatedAt?: Date | null;
+	files?: MiDriveFile[] | null;
+	name?: string | null;
+	text?: string | null;
+	cw?: string | null;
+	apHashtags?: string[] | null;
+	apEmojis?: string[] | null;
+	poll?: IPoll | null;
+};
+
+@Injectable()
+export class NoteUpdateService implements OnApplicationShutdown {
+	#shutdownController = new AbortController();
+
+	constructor(
+		@Inject(DI.db)
+		private db: DataSource,
+
+		@Inject(DI.usersRepository)
+		private usersRepository: UsersRepository,
+
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
+
+		private userEntityService: UserEntityService,
+		private globalEventService: GlobalEventService,
+		private relayService: RelayService,
+		private apDeliverManagerService: ApDeliverManagerService,
+		private apRendererService: ApRendererService,
+		private searchService: SearchService,
+		private activeUsersChart: ActiveUsersChart,
+	) { }
+
+	@bindThis
+	public async update(user: {
+		id: MiUser['id'];
+		username: MiUser['username'];
+		host: MiUser['host'];
+		isBot: MiUser['isBot'];
+	}, data: Option, note: MiNote, silent = false): Promise<MiNote | null> {
+		if (data.updatedAt == null) data.updatedAt = new Date();
+
+		if (data.text) {
+			if (data.text.length > DB_MAX_NOTE_TEXT_LENGTH) {
+				data.text = data.text.slice(0, DB_MAX_NOTE_TEXT_LENGTH);
+			}
+			data.text = data.text.trim();
+		} else {
+			data.text = null;
+		}
+
+		let tags = data.apHashtags;
+		let emojis = data.apEmojis;
+
+		// Parse MFM if needed
+		if (!tags || !emojis) {
+			const tokens = data.text ? mfm.parse(data.text)! : [];
+			const cwTokens = data.cw ? mfm.parse(data.cw)! : [];
+			const choiceTokens = data.poll && data.poll.choices
+				? concat(data.poll.choices.map(choice => mfm.parse(choice)!))
+				: [];
+
+			const combinedTokens = tokens.concat(cwTokens).concat(choiceTokens);
+
+			tags = data.apHashtags ?? extractHashtags(combinedTokens);
+
+			emojis = data.apEmojis ?? extractCustomEmojisFromMfm(combinedTokens);
+		}
+
+		tags = tags.filter(tag => Array.from(tag ?? '').length <= 128).splice(0, 32);
+
+		const updatedNote = await this.updateNote(user, note, data, tags, emojis);
+
+		if (updatedNote) {
+			setImmediate('post updated', { signal: this.#shutdownController.signal }).then(
+				() => this.postNoteUpdated(updatedNote, user, silent),
+				() => { /* aborted, ignore this */ },
+			);
+		}
+
+		return updatedNote;
+	}
+
+	@bindThis
+	private async updateNote(user: {
+		id: MiUser['id']; host: MiUser['host'];
+		}, note: MiNote, data: Option, tags: string[], emojis: string[]): Promise<MiNote | null> {
+		const updatedAtHistory = note.updatedAtHistory ? note.updatedAtHistory : [];
+
+		const values = new MiNote({
+			updatedAt: data.updatedAt!,
+			fileIds: data.files ? data.files.map(file => file.id) : [],
+			text: data.text,
+			hasPoll: data.poll != null,
+			cw: data.cw ?? null,
+			tags: tags.map(tag => normalizeForSearch(tag)),
+			emojis,
+			attachedFileTypes: data.files ? data.files.map(file => file.type) : [],
+			updatedAtHistory: [...updatedAtHistory, new Date()],
+			noteEditHistory: [...note.noteEditHistory, (note.cw ? note.cw + '\n' : '') + note.text!],
+		});
+
+		// 投稿を更新
+		try {
+			if (note.hasPoll && values.hasPoll) {
+				// Start transaction
+				await this.db.transaction(async transactionalEntityManager => {
+					await transactionalEntityManager.update(MiNote, { id: note.id }, values);
+
+					if (values.hasPoll) {
+						const old_poll = await transactionalEntityManager.findOneBy(MiPoll, { noteId: note.id });
+						if (old_poll!.choices.toString() !== data.poll!.choices.toString() || old_poll!.multiple !== data.poll!.multiple) {
+							await transactionalEntityManager.delete(MiPoll, { noteId: note.id });
+							const poll = new MiPoll({
+								noteId: note.id,
+								choices: data.poll!.choices,
+								expiresAt: data.poll!.expiresAt,
+								multiple: data.poll!.multiple,
+								votes: new Array(data.poll!.choices.length).fill(0),
+								noteVisibility: note.visibility,
+								userId: user.id,
+								userHost: user.host,
+							});
+							await transactionalEntityManager.insert(MiPoll, poll);
+						}
+					}
+				});
+			} else if (!note.hasPoll && values.hasPoll) {
+				// Start transaction
+				await this.db.transaction(async transactionalEntityManager => {
+					await transactionalEntityManager.update(MiNote, { id: note.id }, values);
+
+					if (values.hasPoll) {
+						const poll = new MiPoll({
+							noteId: note.id,
+							choices: data.poll!.choices,
+							expiresAt: data.poll!.expiresAt,
+							multiple: data.poll!.multiple,
+							votes: new Array(data.poll!.choices.length).fill(0),
+							noteVisibility: note.visibility,
+							userId: user.id,
+							userHost: user.host,
+						});
+
+						await transactionalEntityManager.insert(MiPoll, poll);
+					}
+				});
+			} else if (note.hasPoll && !values.hasPoll) {
+				// Start transaction
+				await this.db.transaction(async transactionalEntityManager => {
+					await transactionalEntityManager.update(MiNote, {id: note.id}, values);
+
+					if (!values.hasPoll) {
+						await transactionalEntityManager.delete(MiPoll, {noteId: note.id});
+					}
+				});
+			} else {
+				await this.notesRepository.update({ id: note.id }, values);
+			}
+
+			return await this.notesRepository.findOneBy({ id: note.id });
+		} catch (e) {
+			console.error(e);
+
+			throw e;
+		}
+	}
+
+	@bindThis
+	private async postNoteUpdated(note: MiNote, user: {
+		id: MiUser['id'];
+		username: MiUser['username'];
+		host: MiUser['host'];
+		isBot: MiUser['isBot'];
+	}, silent: boolean) {
+		if (!silent) {
+			if (this.userEntityService.isLocalUser(user)) this.activeUsersChart.write(user);
+
+			this.globalEventService.publishNoteStream(note.id, 'updated', { cw: note.cw, text: note.text });
+
+			//#region AP deliver
+			if (this.userEntityService.isLocalUser(user)) {
+				await (async () => {
+					// @ts-ignore
+					const noteActivity = await this.renderNoteActivity(note, user);
+
+					await this.deliverToConcerned(user, note, noteActivity);
+				})();
+			}
+			//#endregion
+		}
+
+		// Register to search database
+		this.reIndex(note);
+	}
+
+	@bindThis
+	private async renderNoteActivity(note: MiNote, user: MiUser) {
+		const content = this.apRendererService.renderUpdate(await this.apRendererService.renderNote(note, false), user);
+
+		return this.apRendererService.addContext(content);
+	}
+
+	@bindThis
+	private async getMentionedRemoteUsers(note: MiNote) {
+		const where = [] as any[];
+
+		// mention / reply / dm
+		const uris = (JSON.parse(note.mentionedRemoteUsers) as IMentionedRemoteUsers).map(x => x.uri);
+		if (uris.length > 0) {
+			where.push(
+				{ uri: In(uris) },
+			);
+		}
+
+		// renote / quote
+		if (note.renoteUserId) {
+			where.push({
+				id: note.renoteUserId,
+			});
+		}
+
+		if (where.length === 0) return [];
+
+		return await this.usersRepository.find({
+			where,
+		}) as MiRemoteUser[];
+	}
+
+	@bindThis
+	private async deliverToConcerned(user: { id: MiLocalUser['id']; host: null; }, note: MiNote, content: any) {
+		console.log('deliverToConcerned', util.inspect(content, { depth: null }));
+		await this.apDeliverManagerService.deliverToFollowers(user, content);
+		await this.relayService.deliverToRelays(user, content);
+		const remoteUsers = await this.getMentionedRemoteUsers(note);
+		for (const remoteUser of remoteUsers) {
+			await this.apDeliverManagerService.deliverToUser(user, content, remoteUser);
+		}
+	}
+
+	@bindThis
+	private reIndex(note: MiNote) {
+		if (note.text == null && note.cw == null) return;
+
+		this.searchService.unindexNote(note);
+		this.searchService.indexNote(note);
+	}
+
+	@bindThis
+	public dispose(): void {
+		this.#shutdownController.abort();
+	}
+
+	@bindThis
+	public onApplicationShutdown(signal?: string | undefined): void {
+		this.dispose();
+	}
+}
diff --git a/packages/backend/src/core/activitypub/ApInboxService.ts b/packages/backend/src/core/activitypub/ApInboxService.ts
index 526b04b292..ee97f6936f 100644
--- a/packages/backend/src/core/activitypub/ApInboxService.ts
+++ b/packages/backend/src/core/activitypub/ApInboxService.ts
@@ -14,6 +14,7 @@ import { NotePiningService } from '@/core/NotePiningService.js';
 import { UserBlockingService } from '@/core/UserBlockingService.js';
 import { NoteDeleteService } from '@/core/NoteDeleteService.js';
 import { NoteCreateService } from '@/core/NoteCreateService.js';
+import { NoteUpdateService } from '@/core/NoteUpdateService.js';
 import { concat, toArray, toSingle, unique } from '@/misc/prelude/array.js';
 import { AppLockService } from '@/core/AppLockService.js';
 import type Logger from '@/logger.js';
@@ -73,6 +74,7 @@ export class ApInboxService {
 		private notePiningService: NotePiningService,
 		private userBlockingService: UserBlockingService,
 		private noteCreateService: NoteCreateService,
+		private noteUpdateService: NoteUpdateService,
 		private noteDeleteService: NoteDeleteService,
 		private appLockService: AppLockService,
 		private apResolverService: ApResolverService,
@@ -730,11 +732,13 @@ export class ApInboxService {
 
 	@bindThis
 	private async update(actor: MiRemoteUser, activity: IUpdate): Promise<string> {
+		const uri = getApId(activity);
+
 		if (actor.uri !== activity.actor) {
 			return 'skip: invalid actor';
 		}
 
-		this.logger.debug('Update');
+		this.logger.debug(`Update: ${uri}`);
 
 		const resolver = this.apResolverService.createResolver();
 
@@ -746,14 +750,51 @@ export class ApInboxService {
 		if (isActor(object)) {
 			await this.apPersonService.updatePerson(actor.uri, resolver, object);
 			return 'ok: Person updated';
-		} else if (getApType(object) === 'Question') {
+		} /*else if (getApType(object) === 'Question') {
 			await this.apQuestionService.updateQuestion(object, resolver).catch(err => console.error(err));
 			return 'ok: Question updated';
+		}*/ else if (getApType(object) === 'Note' || getApType(object) === 'Question') {
+			await this.updateNote(resolver, actor, object, false, activity);
+			return 'ok: Note updated';
 		} else {
 			return `skip: Unknown type: ${getApType(object)}`;
 		}
 	}
 
+	@bindThis
+	private async updateNote(resolver: Resolver, actor: MiRemoteUser, note: IObject, silent = false, activity?: IUpdate): Promise<string> {
+		const uri = getApId(note);
+
+		if (typeof note === 'object') {
+			if (actor.uri !== note.attributedTo) {
+				return 'skip: actor.uri !== note.attributedTo';
+			}
+
+			if (typeof note.id === 'string') {
+				if (this.utilityService.extractDbHost(actor.uri) !== this.utilityService.extractDbHost(note.id)) {
+					return 'skip: host in actor.uri !== note.id';
+				}
+			}
+		}
+
+		const unlock = await this.appLockService.getApLock(uri);
+
+		try {
+			//const exist = await this.apNoteService.fetchNote(note);
+			//if (exist) return 'skip: note exists';
+			await this.apNoteService.updateNote(note, resolver, silent);
+			return 'ok';
+		} catch (err) {
+			if (err instanceof StatusError && err.isClientError) {
+				return `skip ${err.statusCode}`;
+			} else {
+				throw err;
+			}
+		} finally {
+			unlock();
+		}
+	}
+
 	@bindThis
 	private async move(actor: MiRemoteUser, activity: IMove): Promise<string> {
 		// fetch the new and old accounts
diff --git a/packages/backend/src/core/activitypub/ApRendererService.ts b/packages/backend/src/core/activitypub/ApRendererService.ts
index 494622909a..6c6a3615da 100644
--- a/packages/backend/src/core/activitypub/ApRendererService.ts
+++ b/packages/backend/src/core/activitypub/ApRendererService.ts
@@ -108,6 +108,7 @@ export class ApRendererService {
 			actor: this.userEntityService.genLocalUserUri(note.userId),
 			type: 'Announce',
 			published: this.idService.parse(note.id).date.toISOString(),
+			updated: note.updatedAt?.toISOString() ?? undefined,
 			to,
 			cc,
 			object,
@@ -437,6 +438,7 @@ export class ApRendererService {
 			_misskey_quote: quote,
 			quoteUrl: quote,
 			published: this.idService.parse(note.id).date.toISOString(),
+			updated: note.updatedAt?.toISOString() ?? undefined,
 			to,
 			cc,
 			inReplyTo,
diff --git a/packages/backend/src/core/activitypub/models/ApNoteService.ts b/packages/backend/src/core/activitypub/models/ApNoteService.ts
index 8da9407216..9ada6129aa 100644
--- a/packages/backend/src/core/activitypub/models/ApNoteService.ts
+++ b/packages/backend/src/core/activitypub/models/ApNoteService.ts
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-FileCopyrightText: syuilo and misskey-project, cherrypick contributors
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
@@ -7,7 +7,7 @@ import { forwardRef, Inject, Injectable } from '@nestjs/common';
 import promiseLimit from 'promise-limit';
 import { In } from 'typeorm';
 import { DI } from '@/di-symbols.js';
-import type { PollsRepository, EmojisRepository } from '@/models/_.js';
+import type { PollsRepository, EmojisRepository, NotesRepository } from '@/models/_.js';
 import type { Config } from '@/config.js';
 import type { MiRemoteUser } from '@/models/User.js';
 import type { MiNote } from '@/models/Note.js';
@@ -24,10 +24,12 @@ import { StatusError } from '@/misc/status-error.js';
 import { UtilityService } from '@/core/UtilityService.js';
 import { bindThis } from '@/decorators.js';
 import { checkHttps } from '@/misc/check-https.js';
-import { getOneApId, getApId, getOneApHrefNullable, validPost, isEmoji, getApType } from '../type.js';
+import type { IObject, IPost } from '../type.js';
+import { getApId, getApType, getOneApHrefNullable, getOneApId, isEmoji, validPost } from '../type.js';
 import { ApLoggerService } from '../ApLoggerService.js';
 import { ApMfmService } from '../ApMfmService.js';
 import { ApDbResolverService } from '../ApDbResolverService.js';
+import type { Resolver } from '../ApResolverService.js';
 import { ApResolverService } from '../ApResolverService.js';
 import { ApAudienceService } from '../ApAudienceService.js';
 import { ApPersonService } from './ApPersonService.js';
@@ -35,8 +37,7 @@ import { extractApHashtags } from './tag.js';
 import { ApMentionService } from './ApMentionService.js';
 import { ApQuestionService } from './ApQuestionService.js';
 import { ApImageService } from './ApImageService.js';
-import type { Resolver } from '../ApResolverService.js';
-import type { IObject, IPost } from '../type.js';
+import { NoteUpdateService } from '@/core/NoteUpdateService.js';
 
 @Injectable()
 export class ApNoteService {
@@ -52,6 +53,12 @@ export class ApNoteService {
 		@Inject(DI.emojisRepository)
 		private emojisRepository: EmojisRepository,
 
+		@Inject(DI.messagingMessagesRepository)
+		private messagingMessagesRepository: MessagingMessagesRepository,
+
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
+
 		private idService: IdService,
 		private apMfmService: ApMfmService,
 		private apResolverService: ApResolverService,
@@ -69,6 +76,7 @@ export class ApNoteService {
 		private appLockService: AppLockService,
 		private pollService: PollService,
 		private noteCreateService: NoteCreateService,
+		private noteUpdateService: NoteUpdateService,
 		private apDbResolverService: ApDbResolverService,
 		private apLoggerService: ApLoggerService,
 	) {
@@ -278,6 +286,7 @@ export class ApNoteService {
 		try {
 			return await this.noteCreateService.create(actor, {
 				createdAt: note.published ? new Date(note.published) : null,
+				updatedAt: note.updated ? new Date(note.updated) : null,
 				files,
 				reply,
 				renote: quote,
@@ -307,6 +316,92 @@ export class ApNoteService {
 		}
 	}
 
+	@bindThis
+	public async updateNote(value: string | IObject, resolver?: Resolver, silent = false): Promise<MiNote | null> {
+		if (resolver == null) resolver = this.apResolverService.createResolver();
+
+		const object = await resolver.resolve(value);
+		const entryUri = getApId(value);
+
+		const err = this.validateNote(object, entryUri);
+		if (err) {
+			this.logger.error(err.message, {
+				resolver: { history: resolver.getHistory() },
+				value,
+				object,
+			});
+			throw new Error('invalid note');
+		}
+
+		const note = object as IPost;
+
+		// 投稿者をフェッチ
+		if (note.attributedTo == null) {
+			throw new Error('invalid note.attributedTo: ' + note.attributedTo);
+		}
+
+		const actor = await this.apPersonService.resolvePerson(getOneApId(note.attributedTo), resolver) as MiRemoteUser;
+
+		// 投稿者が凍結されていたらスキップ
+		if (actor.isSuspended) {
+			throw new Error('actor has been suspended');
+		}
+
+		const b_note = await this.notesRepository.findOneBy({
+			uri: entryUri
+		}).then(x => {
+			if (x == null) throw new Error('note not found');
+			return x;
+		});
+
+		const limit = promiseLimit<MiDriveFile>(2);
+		const files = (await Promise.all(toArray(note.attachment).map(attach => (
+			limit(() => this.apImageService.resolveImage(actor, {
+				...attach,
+				sensitive: note.sensitive, // Noteがsensitiveなら添付もsensitiveにする
+			}))
+		))));
+
+		const cw = note.summary === '' ? null : note.summary;
+
+		// テキストのパース
+		let text: string | null = null;
+		if (note.source?.mediaType === 'text/x.misskeymarkdown' && typeof note.source.content === 'string') {
+			text = note.source.content;
+		} else if (typeof note._misskey_content !== 'undefined') {
+			text = note._misskey_content;
+		} else if (typeof note.content === 'string') {
+			text = this.apMfmService.htmlToMfm(note.content, note.tag);
+		}
+
+		const apHashtags = extractApHashtags(note.tag);
+
+		const emojis = await this.extractEmojis(note.tag ?? [], actor.host).catch(e => {
+			this.logger.info(`extractEmojis: ${e}`);
+			return [];
+		});
+
+		const apEmojis = emojis.map(emoji => emoji.name);
+
+		const poll = await this.apQuestionService.extractPollFromQuestion(note, resolver).catch(() => undefined);
+
+		try {
+			return await this.noteUpdateService.update(actor, {
+				updatedAt: note.updated ? new Date(note.updated) : null,
+				files,
+				name: note.name,
+				cw,
+				text,
+				apHashtags,
+				apEmojis,
+				poll,
+			}, b_note, silent);
+		} catch (err: any) {
+			this.logger.warn(`note update failed: ${err}`);
+			return err;
+		}
+	}
+
 	/**
 	 * Noteを解決します。
 	 *
diff --git a/packages/backend/src/core/activitypub/type.ts b/packages/backend/src/core/activitypub/type.ts
index b43dddad61..012fd44c19 100644
--- a/packages/backend/src/core/activitypub/type.ts
+++ b/packages/backend/src/core/activitypub/type.ts
@@ -14,6 +14,7 @@ export interface IObject {
 	summary?: string;
 	_misskey_summary?: string;
 	published?: string;
+	updated?: string;
 	cc?: ApObject;
 	to?: ApObject;
 	attributedTo?: ApObject;
diff --git a/packages/backend/src/server/api/endpoints/notes/update.ts b/packages/backend/src/server/api/endpoints/notes/update.ts
index fe6d9637e8..14553fbee7 100644
--- a/packages/backend/src/server/api/endpoints/notes/update.ts
+++ b/packages/backend/src/server/api/endpoints/notes/update.ts
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: syuilo and other misskey contributors
+ * SPDX-FileCopyrightText: syuilo and other misskey contributors, cherrypick contributors
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
@@ -7,12 +7,13 @@ import ms from 'ms';
 import { Inject, Injectable } from '@nestjs/common';
 import type { UsersRepository, NotesRepository, DriveFilesRepository, MiDriveFile } from '@/models/_.js';
 import { Endpoint } from '@/server/api/endpoint-base.js';
-import { NoteDeleteService } from '@/core/NoteDeleteService.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import { NoteUpdateService } from '@/core/NoteUpdateService.js';
 import { DI } from '@/di-symbols.js';
 import { GetterService } from '@/server/api/GetterService.js';
-import { GlobalEventService } from '@/core/GlobalEventService.js';
 import { MAX_NOTE_TEXT_LENGTH } from '@/const.js';
 import { ApiError } from '../../error.js';
+import type { DriveFilesRepository, MiDriveFile } from "@/models/_.js";
 
 export const meta = {
 	tags: ['notes'],
@@ -39,6 +40,11 @@ export const meta = {
 			code: 'NO_SUCH_FILE',
 			id: 'b6992544-63e7-67f0-fa7f-32444b1b5306',
 		},
+		cannotCreateAlreadyExpiredPoll: {
+			message: 'Poll is already expired.',
+			code: 'CANNOT_CREATE_ALREADY_EXPIRED_POLL',
+			id: '04da457d-b083-4055-9082-955525eda5a5',
+		},
 	},
 } as const;
 
@@ -66,7 +72,7 @@ export const paramDef = {
 			type: 'string',
 			minLength: 1,
 			maxLength: MAX_NOTE_TEXT_LENGTH,
-			nullable: true,
+			nullable: false,
 		},
 		fileIds: {
 			type: 'array',
@@ -99,31 +105,23 @@ export const paramDef = {
 			},
 			required: ['choices'],
 		},
+		disableRightClick: { type: 'boolean', default: false },
 	},
-	// (re)note with text, files and poll are optional
-	anyOf: [
-		{ required: ['text'] },
-		{ required: ['renoteId'] },
-		{ required: ['fileIds'] },
-		{ required: ['mediaIds'] },
-		{ required: ['poll'] },
-	],
+	required: ['noteId', 'text', 'cw'],
 } as const;
 
 @Injectable()
 export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-disable-line import/no-default-export
 	constructor(
-		@Inject(DI.usersRepository)
-		private usersRepository: UsersRepository,
-
-		@Inject(DI.notesRepository)
-		private notesRepository: NotesRepository,
+		@Inject(DI.driveFilesRepository)
+		private driveFilesRepository: DriveFilesRepository,
 
     @Inject(DI.driveFilesRepository)
     private driveFilesRepository: DriveFilesRepository,
 
 		private getterService: GetterService,
-		private globalEventService: GlobalEventService,
+		private noteEntityService: NoteEntityService,
+		private noteUpdateService: NoteUpdateService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const note = await this.getterService.getNote(ps.noteId).catch(err => {
@@ -131,9 +129,13 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				throw err;
 			});
 
-			let files: MiDriveFile[] = [];
-			const fileIds = ps.fileIds ?? null;
+			if (note.userId !== me.id) {
+				throw new ApiError(meta.errors.noSuchNote);
+			}
 
+
+			let files: MiDriveFile[] = [];
+			const fileIds = ps.fileIds ?? ps.mediaIds ?? null;
 			if (fileIds != null) {
 				files = await this.driveFilesRepository.createQueryBuilder('file')
 					.where('file.userId = :userId AND file.id IN (:...fileIds)', {
@@ -149,31 +151,32 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				}
 			}
 
-			if (note.userId !== me.id) {
-				throw new ApiError(meta.errors.noSuchNote);
+			if (ps.poll) {
+				if (typeof ps.poll.expiresAt === 'number') {
+					if (ps.poll.expiresAt < Date.now()) {
+						throw new ApiError(meta.errors.cannotCreateAlreadyExpiredPoll);
+					}
+				} else if (typeof ps.poll.expiredAfter === 'number') {
+					ps.poll.expiresAt = Date.now() + ps.poll.expiredAfter;
+				}
 			}
 
-			await this.notesRepository.update({ id: note.id }, {
-				updatedAt: new Date(),
-				cw: ps.cw,
+			const data = {
 				text: ps.text,
-				fileIds: files.length > 0 ? files.map(f => f.id) : undefined,
+				files: files,
+				cw: ps.cw,
 				poll: ps.poll ? {
 					choices: ps.poll.choices,
 					multiple: ps.poll.multiple ?? false,
 					expiresAt: ps.poll.expiresAt ? new Date(ps.poll.expiresAt) : null,
 				} : undefined,
-				localOnly: ps.localOnly,
-				reactionAcceptance: ps.reactionAcceptance,
-				apMentions: ps.noExtractMentions ? [] : undefined,
-				apHashtags: ps.noExtractHashtags ? [] : undefined,
-				apEmojis: ps.noExtractEmojis ? [] : undefined,
-			});
+			};
 
-			this.globalEventService.publishNoteStream(note.id, 'updated', {
-				cw: ps.cw,
-				text: ps.text,
-			});
+			const updatedNote = await this.noteUpdateService.update(me, data, note, false);
+
+			return {
+				updatedNote: await this.noteEntityService.pack(updatedNote!, me),
+			};
 		});
 	}
 }
diff --git a/packages/frontend/src/ui/_common_/navbar-for-mobile.vue b/packages/frontend/src/ui/_common_/navbar-for-mobile.vue
index 4453c186db..4197707ee5 100644
--- a/packages/frontend/src/ui/_common_/navbar-for-mobile.vue
+++ b/packages/frontend/src/ui/_common_/navbar-for-mobile.vue
@@ -122,6 +122,7 @@ const gamingMode = computed(defaultStore.makeGetterSetter('gamingMode'));
 document.documentElement.style.setProperty('--homeColor', hexToRgb(defaultStore.state.homeColor));
 document.documentElement.style.setProperty('--followerColor', hexToRgb(defaultStore.state.followerColor));
 document.documentElement.style.setProperty('--specifiedColor', hexToRgb(defaultStore.state.specifiedColor));
+document.documentElement.style.setProperty('--localOnlyColor', hexToRgb(defaultStore.state.localOnlyColor));
 document.documentElement.style.setProperty('--gamingspeed', defaultStore.state.numberOfGamingSpeed + 's');
 
 let gaming = ref();