diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2454a3b609..ff0a0e6b60 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,19 @@
 
 -->
 
+## 12.x.x (unreleased)
+
+### Improvements
+- リモートユーザーのDeleteアクティビティに対応
+
+### Bugfixes
+
+## 12.90.1 (2021/09/05)
+
+### Bugfixes
+- Dockerfileを修正
+- ノート翻訳時に公開範囲が考慮されていない問題を修正
+
 ## 12.90.0 (2021/09/04)
 
 ### Improvements
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index e22f50668f..b9623ef0d0 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -1150,6 +1150,10 @@ _permissions:
   "write:user-groups": "ユーザーグループを操作する"
   "read:channels": "チャンネルを見る"
   "write:channels": "チャンネルを操作する"
+  "read:gallery": "ギャラリーを見る"
+  "write:gallery": "ギャラリーを操作する"
+  "read:gallery-likes": "ギャラリーのいいねを見る"
+  "write:gallery-likes": "ギャラリーのいいねを操作する"
 
 _auth:
   shareAccess: "「{name}」がアカウントにアクセスすることを許可しますか?"
diff --git a/package.json b/package.json
index 0f93ae03e9..ab24a1c7ec 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
 	"name": "misskey",
 	"author": "syuilo <syuilotan@yahoo.co.jp>",
-	"version": "12.90.0",
+	"version": "12.90.1",
 	"codename": "indigo",
 	"repository": {
 		"type": "git",
diff --git a/src/misc/api-permissions.ts b/src/misc/api-permissions.ts
index eb20c3d289..160cdf9fd6 100644
--- a/src/misc/api-permissions.ts
+++ b/src/misc/api-permissions.ts
@@ -32,3 +32,4 @@ export const kinds = [
 	'read:gallery-likes',
 	'write:gallery-likes',
 ];
+// IF YOU ADD KINDS(PERMISSIONS), YOU MUST ADD TRANSLATIONS (under _permissions).
diff --git a/src/models/repositories/note.ts b/src/models/repositories/note.ts
index a8e356abf2..9e0f5e55f0 100644
--- a/src/models/repositories/note.ts
+++ b/src/models/repositories/note.ts
@@ -18,7 +18,57 @@ export class NoteRepository extends Repository<Note> {
 		return x.trim().length <= 100;
 	}
 
+	public async isVisibleForMe(note: Note, meId: User['id'] | null): Promise<boolean> {
+		// visibility が specified かつ自分が指定されていなかったら非表示
+		if (note.visibility === 'specified') {
+			if (meId == null) {
+				return false;
+			} else if (meId === note.userId) {
+				return true;
+			} else {
+				// 指定されているかどうか
+				const specified = note.visibleUserIds.some((id: any) => meId === id);
+
+				if (specified) {
+					return true;
+				} else {
+					return false;
+				}
+			}
+		}
+
+		// visibility が followers かつ自分が投稿者のフォロワーでなかったら非表示
+		if (note.visibility === 'followers') {
+			if (meId == null) {
+				return false;
+			} else if (meId === note.userId) {
+				return true;
+			} else if (note.reply && (meId === note.reply.userId)) {
+				// 自分の投稿に対するリプライ
+				return true;
+			} else if (note.mentions && note.mentions.some(id => meId === id)) {
+				// 自分へのメンション
+				return true;
+			} else {
+				// フォロワーかどうか
+				const following = await Followings.findOne({
+					followeeId: note.userId,
+					followerId: meId
+				});
+
+				if (following == null) {
+					return false;
+				} else {
+					return true;
+				}
+			}
+		}
+
+		return true;
+	}
+
 	private async hideNote(packedNote: PackedNote, meId: User['id'] | null) {
+		// TODO: isVisibleForMe を使うようにしても良さそう(型違うけど)
 		let hide = false;
 
 		// visibility が specified かつ自分が指定されていなかったら非表示
diff --git a/src/models/repositories/notification.ts b/src/models/repositories/notification.ts
index 55af96b6d7..4d13940c76 100644
--- a/src/models/repositories/notification.ts
+++ b/src/models/repositories/notification.ts
@@ -7,6 +7,7 @@ import { Note } from '@/models/entities/note';
 import { NoteReaction } from '@/models/entities/note-reaction';
 import { User } from '@/models/entities/user';
 import { aggregateNoteEmojis, prefetchEmojis } from '@/misc/populate-emojis';
+import { notificationTypes } from '@/types';
 
 export type PackedNotification = SchemaType<typeof packedNotificationSchema>;
 
@@ -124,20 +125,41 @@ export const packedNotificationSchema = {
 			optional: false as const, nullable: false as const,
 			format: 'date-time',
 		},
+		isRead: {
+			type: 'boolean' as const,
+			optional: false as const, nullable: false as const,
+		},
 		type: {
 			type: 'string' as const,
 			optional: false as const, nullable: false as const,
-			enum: ['follow', 'followRequestAccepted', 'receiveFollowRequest', 'mention', 'reply', 'renote', 'quote', 'reaction', 'pollVote'],
-		},
-		userId: {
-			type: 'string' as const,
-			optional: true as const, nullable: true as const,
-			format: 'id',
+			enum: [...notificationTypes],
 		},
 		user: {
 			type: 'object' as const,
 			ref: 'User',
 			optional: true as const, nullable: true as const,
 		},
+		userId: {
+			type: 'string' as const,
+			optional: true as const, nullable: true as const,
+			format: 'id',
+		},
+		note: {
+			type: 'object' as const,
+			ref: 'Note',
+			optional: true as const, nullable: true as const,
+		},
+		reaction: {
+			type: 'string' as const,
+			optional: true as const, nullable: true as const,
+		},
+		body: {
+			type: 'string' as const,
+			optional: true as const, nullable: true as const,
+		},
+		icon: {
+			type: 'string' as const,
+			optional: true as const, nullable: true as const,
+		},
 	}
 };
diff --git a/src/remote/activitypub/kernel/delete/actor.ts b/src/remote/activitypub/kernel/delete/actor.ts
new file mode 100644
index 0000000000..502f8d5ab5
--- /dev/null
+++ b/src/remote/activitypub/kernel/delete/actor.ts
@@ -0,0 +1,26 @@
+import { apLogger } from '../../logger';
+import { createDeleteAccountJob } from '@/queue';
+import { IRemoteUser } from '@/models/entities/user';
+import { Users } from '@/models/index';
+
+const logger = apLogger;
+
+export async function deleteActor(actor: IRemoteUser, uri: string): Promise<string> {
+	logger.info(`Deleting the Actor: ${uri}`);
+
+	if (actor.uri !== uri) {
+		return `skip: delete actor ${actor.uri} !== ${uri}`;
+	}
+
+	if (actor.isDeleted) {
+		logger.info(`skip: already deleted`);
+	}
+
+	const job = await createDeleteAccountJob(actor);
+
+	await Users.update(actor.id, {
+		isDeleted: true,
+	});
+
+	return `ok: queued ${job.name} ${job.id}`;
+}
diff --git a/src/remote/activitypub/kernel/delete/index.ts b/src/remote/activitypub/kernel/delete/index.ts
index 474f3f6d60..86a452de76 100644
--- a/src/remote/activitypub/kernel/delete/index.ts
+++ b/src/remote/activitypub/kernel/delete/index.ts
@@ -2,6 +2,7 @@ import deleteNote from './note';
 import { IRemoteUser } from '@/models/entities/user';
 import { IDelete, getApId, isTombstone, IObject, validPost, validActor } from '../../type';
 import { toSingle } from '@/prelude/array';
+import { deleteActor } from './actor';
 
 /**
  * 削除アクティビティを捌きます
@@ -41,7 +42,7 @@ export default async (actor: IRemoteUser, activity: IDelete): Promise<string> =>
 	if (validPost.includes(formarType)) {
 		return await deleteNote(actor, uri);
 	} else if (validActor.includes(formarType)) {
-		return `Delete Actor is not implanted`;
+		return await deleteActor(actor, uri);
 	} else {
 		return `Unknown type ${formarType}`;
 	}
diff --git a/src/server/api/endpoints/notes/translate.ts b/src/server/api/endpoints/notes/translate.ts
index e4bc6bb060..b56b1debdd 100644
--- a/src/server/api/endpoints/notes/translate.ts
+++ b/src/server/api/endpoints/notes/translate.ts
@@ -8,6 +8,7 @@ import config from '@/config/index';
 import { getAgentByUrl } from '@/misc/fetch';
 import { URLSearchParams } from 'url';
 import { fetchMeta } from '@/misc/fetch-meta';
+import { Notes } from '@/models';
 
 export const meta = {
 	tags: ['notes'],
@@ -43,6 +44,10 @@ export default define(meta, async (ps, user) => {
 		throw e;
 	});
 
+	if (!(await Notes.isVisibleForMe(note, user ? user.id : null))) {
+		return 204; // TODO: 良い感じのエラー返す
+	}
+
 	if (note.text == null) {
 		return 204;
 	}