diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a12d7cb4..0e5c10a0b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,6 +27,10 @@
 - フォルダーやファイルに対しても開発者モード使用時、IDをコピーできるように
 - 引用対象を「もっと見る」で展開した場合、「閉じる」で畳めるように
 - プロフィールURLをコピーできるボタンを追加 #11190
+- ユーザーのContextMenuに「アンテナに追加」ボタンを追加
+- フォローやお気に入り登録をしていないチャンネルを開く時は概要ページを開くように
+- 画面ビューワをタップした場合、マウスクリックと同様に画像ビューワを閉じるように
+- オフライン時の画面にリロードボタンを追加
 - Fix: サーバーメトリクスが90度傾いている
 - Fix: 非ログイン時にクレデンシャルが必要なページに行くとエラーが出る問題を修正
 - Fix: sparkle内にリンクを入れるとクリック不能になる問題の修正
diff --git a/locales/index.d.ts b/locales/index.d.ts
index a8948c0aa..7028417bf 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -52,6 +52,7 @@ export interface Locale {
     "deleteAndEdit": string;
     "deleteAndEditConfirm": string;
     "addToList": string;
+    "addToAntenna": string;
     "sendMessage": string;
     "copyRSS": string;
     "copyUsername": string;
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index b36aa00f7..839edd25b 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -49,6 +49,7 @@ delete: "削除"
 deleteAndEdit: "削除して編集"
 deleteAndEditConfirm: "このノートを削除してもう一度編集しますか？このノートへのリアクション、Renote、返信も全て削除されます。"
 addToList: "リストに追加"
+addToAntenna: "アンテナに追加"
 sendMessage: "メッセージを送信"
 copyRSS: "RSSをコピー"
 copyUsername: "ユーザー名をコピー"
diff --git a/packages/backend/src/core/FetchInstanceMetadataService.ts b/packages/backend/src/core/FetchInstanceMetadataService.ts
index a0afaaf88..9e8d17442 100644
--- a/packages/backend/src/core/FetchInstanceMetadataService.ts
+++ b/packages/backend/src/core/FetchInstanceMetadataService.ts
@@ -103,7 +103,7 @@ export class FetchInstanceMetadataService {
 
 			if (name) updates.name = name;
 			if (description) updates.description = description;
-			if (icon || favicon) updates.iconUrl = icon ?? favicon;
+			if (icon || favicon) updates.iconUrl = (icon && !icon.includes('data:image/png;base64')) ? icon : favicon;
 			if (favicon) updates.faviconUrl = favicon;
 			if (themeColor) updates.themeColor = themeColor;
 
diff --git a/packages/backend/src/core/NoteCreateService.ts b/packages/backend/src/core/NoteCreateService.ts
index fb36ca3b6..4f3d66dd5 100644
--- a/packages/backend/src/core/NoteCreateService.ts
+++ b/packages/backend/src/core/NoteCreateService.ts
@@ -570,12 +570,14 @@ export class NoteCreateService implements OnApplicationShutdown {
 			if (data.reply) {
 				// 通知
 				if (data.reply.userHost === null) {
-					const threadMuted = await this.noteThreadMutingsRepository.findOneBy({
-						userId: data.reply.userId,
-						threadId: data.reply.threadId ?? data.reply.id,
+					const isThreadMuted = await this.noteThreadMutingsRepository.exist({
+						where: {
+							userId: data.reply.userId,
+							threadId: data.reply.threadId ?? data.reply.id,
+						}
 					});
 
-					if (!threadMuted) {
+					if (!isThreadMuted) {
 						nm.push(data.reply.userId, 'reply');
 						this.globalEventService.publishMainStream(data.reply.userId, 'reply', noteObj);
 
@@ -712,12 +714,14 @@ export class NoteCreateService implements OnApplicationShutdown {
 	@bindThis
 	private async createMentionedEvents(mentionedUsers: MinimumUser[], note: Note, nm: NotificationManager) {
 		for (const u of mentionedUsers.filter(u => this.userEntityService.isLocalUser(u))) {
-			const threadMuted = await this.noteThreadMutingsRepository.findOneBy({
-				userId: u.id,
-				threadId: note.threadId ?? note.id,
+			const isThreadMuted = await this.noteThreadMutingsRepository.exist({
+				where: {
+					userId: u.id,
+					threadId: note.threadId ?? note.id,
+				},
 			});
 
-			if (threadMuted) {
+			if (isThreadMuted) {
 				continue;
 			}
 
diff --git a/packages/backend/src/core/NoteReadService.ts b/packages/backend/src/core/NoteReadService.ts
index b84591e26..52e9bd369 100644
--- a/packages/backend/src/core/NoteReadService.ts
+++ b/packages/backend/src/core/NoteReadService.ts
@@ -43,11 +43,13 @@ export class NoteReadService implements OnApplicationShutdown {
 		//#endregion
 
 		// スレッドミュート
-		const threadMute = await this.noteThreadMutingsRepository.findOneBy({
-			userId: userId,
-			threadId: note.threadId ?? note.id,
+		const isThreadMuted = await this.noteThreadMutingsRepository.exist({
+			where: {
+				userId: userId,
+				threadId: note.threadId ?? note.id,
+			},
 		});
-		if (threadMute) return;
+		if (isThreadMuted) return;
 
 		const unread = {
 			id: this.idService.genId(),
@@ -62,9 +64,9 @@ export class NoteReadService implements OnApplicationShutdown {
 
 		// 2秒経っても既読にならなかったら「未読の投稿がありますよ」イベントを発行する
 		setTimeout(2000, 'unread note', { signal: this.#shutdownController.signal }).then(async () => {
-			const exist = await this.noteUnreadsRepository.findOneBy({ id: unread.id });
+			const exist = await this.noteUnreadsRepository.exist({ where: { id: unread.id } });
 
-			if (exist == null) return;
+			if (!exist) return;
 
 			if (params.isMentioned) {
 				this.globalEventService.publishMainStream(userId, 'unreadMention', note.id);
diff --git a/packages/backend/src/core/SignupService.ts b/packages/backend/src/core/SignupService.ts
index e6b17a874..1e44406c1 100644
--- a/packages/backend/src/core/SignupService.ts
+++ b/packages/backend/src/core/SignupService.ts
@@ -71,12 +71,12 @@ export class SignupService {
 		const secret = generateUserToken();
 
 		// Check username duplication
-		if (await this.usersRepository.findOneBy({ usernameLower: username.toLowerCase(), host: IsNull() })) {
+		if (await this.usersRepository.exist({ where: { usernameLower: username.toLowerCase(), host: IsNull() } })) {
 			throw new Error('DUPLICATED_USERNAME');
 		}
 
 		// Check deleted username duplication
-		if (await this.usedUsernamesRepository.findOneBy({ username: username.toLowerCase() })) {
+		if (await this.usedUsernamesRepository.exist({ where: { username: username.toLowerCase() } })) {
 			throw new Error('USED_USERNAME');
 		}
 
diff --git a/packages/backend/src/core/UserFollowingService.ts b/packages/backend/src/core/UserFollowingService.ts
index 7d90bc2c0..4d7bfeaf2 100644
--- a/packages/backend/src/core/UserFollowingService.ts
+++ b/packages/backend/src/core/UserFollowingService.ts
@@ -122,22 +122,26 @@ export class UserFollowingService implements OnModuleInit {
 			let autoAccept = false;
 
 			// 鍵アカウントであっても、既にフォローされていた場合はスルー
-			const following = await this.followingsRepository.findOneBy({
-				followerId: follower.id,
-				followeeId: followee.id,
+			const isFollowing = await this.followingsRepository.exist({
+				where: {
+					followerId: follower.id,
+					followeeId: followee.id,
+				},
 			});
-			if (following) {
+			if (isFollowing) {
 				autoAccept = true;
 			}
 
 			// フォローしているユーザーは自動承認オプション
 			if (!autoAccept && (this.userEntityService.isLocalUser(followee) && followeeProfile.autoAcceptFollowed)) {
-				const followed = await this.followingsRepository.findOneBy({
-					followerId: followee.id,
-					followeeId: follower.id,
+				const isFollowed = await this.followingsRepository.exist({
+					where: {
+						followerId: followee.id,
+						followeeId: follower.id,
+					},
 				});
 
-				if (followed) autoAccept = true;
+				if (isFollowed) autoAccept = true;
 			}
 
 			// Automatically accept if the follower is an account who has moved and the locked followee had accepted the old account.
@@ -206,12 +210,14 @@ export class UserFollowingService implements OnModuleInit {
 
 		this.cacheService.userFollowingsCache.refresh(follower.id);
 
-		const req = await this.followRequestsRepository.findOneBy({
-			followeeId: followee.id,
-			followerId: follower.id,
+		const requestExist = await this.followRequestsRepository.exist({
+			where: {
+				followeeId: followee.id,
+				followerId: follower.id,
+			},
 		});
 
-		if (req) {
+		if (requestExist) {
 			await this.followRequestsRepository.delete({
 				followeeId: followee.id,
 				followerId: follower.id,
@@ -505,12 +511,14 @@ export class UserFollowingService implements OnModuleInit {
 			}
 		}
 
-		const request = await this.followRequestsRepository.findOneBy({
-			followeeId: followee.id,
-			followerId: follower.id,
+		const requestExist = await this.followRequestsRepository.exist({
+			where: {
+				followeeId: followee.id,
+				followerId: follower.id,
+			},
 		});
 
-		if (request == null) {
+		if (!requestExist) {
 			throw new IdentifiableError('17447091-ce07-46dd-b331-c1fd4f15b1e7', 'request not found');
 		}
 
diff --git a/packages/backend/src/core/activitypub/ApInboxService.ts b/packages/backend/src/core/activitypub/ApInboxService.ts
index efef777fb..b0428763c 100644
--- a/packages/backend/src/core/activitypub/ApInboxService.ts
+++ b/packages/backend/src/core/activitypub/ApInboxService.ts
@@ -618,12 +618,14 @@ export class ApInboxService {
 			return 'skip: follower not found';
 		}
 
-		const following = await this.followingsRepository.findOneBy({
-			followerId: follower.id,
-			followeeId: actor.id,
+		const isFollowing = await this.followingsRepository.exist({
+			where: {
+				followerId: follower.id,
+				followeeId: actor.id,
+			},
 		});
 
-		if (following) {
+		if (isFollowing) {
 			await this.userFollowingService.unfollow(follower, actor);
 			return 'ok: unfollowed';
 		}
@@ -673,22 +675,26 @@ export class ApInboxService {
 			return 'skip: フォロー解除しようとしているユーザーはローカルユーザーではありません';
 		}
 
-		const req = await this.followRequestsRepository.findOneBy({
-			followerId: actor.id,
-			followeeId: followee.id,
+		const requestExist = await this.followRequestsRepository.exist({
+			where: {
+				followerId: actor.id,
+				followeeId: followee.id,
+			},
 		});
 
-		const following = await this.followingsRepository.findOneBy({
-			followerId: actor.id,
-			followeeId: followee.id,
+		const isFollowing = await this.followingsRepository.exist({
+			where: {
+				followerId: actor.id,
+				followeeId: followee.id,
+			},
 		});
 
-		if (req) {
+		if (requestExist) {
 			await this.userFollowingService.cancelFollowRequest(followee, actor);
 			return 'ok: follow request canceled';
 		}
 
-		if (following) {
+		if (isFollowing) {
 			await this.userFollowingService.unfollow(actor, followee);
 			return 'ok: unfollowed';
 		}
diff --git a/packages/backend/src/core/activitypub/ApRendererService.ts b/packages/backend/src/core/activitypub/ApRendererService.ts
index d8b95ca4d..96ac5c61f 100644
--- a/packages/backend/src/core/activitypub/ApRendererService.ts
+++ b/packages/backend/src/core/activitypub/ApRendererService.ts
@@ -323,9 +323,9 @@ export class ApRendererService {
 			inReplyToNote = await this.notesRepository.findOneBy({ id: note.replyId });
 
 			if (inReplyToNote != null) {
-				const inReplyToUser = await this.usersRepository.findOneBy({ id: inReplyToNote.userId });
+				const inReplyToUserExist = await this.usersRepository.exist({ where: { id: inReplyToNote.userId } });
 
-				if (inReplyToUser != null) {
+				if (inReplyToUserExist) {
 					if (inReplyToNote.uri) {
 						inReplyTo = inReplyToNote.uri;
 					} else {
diff --git a/packages/backend/src/core/entities/ChannelEntityService.ts b/packages/backend/src/core/entities/ChannelEntityService.ts
index 15ffd4486..d24657260 100644
--- a/packages/backend/src/core/entities/ChannelEntityService.ts
+++ b/packages/backend/src/core/entities/ChannelEntityService.ts
@@ -47,17 +47,26 @@ export class ChannelEntityService {
 
 		const banner = channel.bannerId ? await this.driveFilesRepository.findOneBy({ id: channel.bannerId }) : null;
 
-		const hasUnreadNote = meId ? (await this.noteUnreadsRepository.findOneBy({ noteChannelId: channel.id, userId: meId })) != null : undefined;
+		const hasUnreadNote = meId ? await this.noteUnreadsRepository.exist({
+			where: {
+				noteChannelId: channel.id,
+				userId: meId
+			},
+		}) : undefined;
 
-		const following = meId ? await this.channelFollowingsRepository.findOneBy({
-			followerId: meId,
-			followeeId: channel.id,
-		}) : null;
+		const isFollowing = meId ? await this.channelFollowingsRepository.exist({
+			where: {
+				followerId: meId,
+				followeeId: channel.id,
+			},
+		}) : false;
 
-		const favorite = meId ? await this.channelFavoritesRepository.findOneBy({
-			userId: meId,
-			channelId: channel.id,
-		}) : null;
+		const isFavorited = meId ? await this.channelFavoritesRepository.exist({
+			where: {
+				userId: meId,
+				channelId: channel.id,
+			},
+		}) : false;
 
 		const pinnedNotes = channel.pinnedNoteIds.length > 0 ? await this.notesRepository.find({
 			where: {
@@ -80,8 +89,8 @@ export class ChannelEntityService {
 			notesCount: channel.notesCount,
 
 			...(me ? {
-				isFollowing: following != null,
-				isFavorited: favorite != null,
+				isFollowing,
+				isFavorited,
 				hasUnreadNote,
 			} : {}),
 
diff --git a/packages/backend/src/core/entities/ClipEntityService.ts b/packages/backend/src/core/entities/ClipEntityService.ts
index 33d3c5380..f558cbc33 100644
--- a/packages/backend/src/core/entities/ClipEntityService.ts
+++ b/packages/backend/src/core/entities/ClipEntityService.ts
@@ -39,7 +39,7 @@ export class ClipEntityService {
 			description: clip.description,
 			isPublic: clip.isPublic,
 			favoritedCount: await this.clipFavoritesRepository.countBy({ clipId: clip.id }),
-			isFavorited: meId ? await this.clipFavoritesRepository.findOneBy({ clipId: clip.id, userId: meId }).then(x => x != null) : undefined,
+			isFavorited: meId ? await this.clipFavoritesRepository.exist({ where: { clipId: clip.id, userId: meId } }) : undefined,
 		});
 	}
 
diff --git a/packages/backend/src/core/entities/FlashEntityService.ts b/packages/backend/src/core/entities/FlashEntityService.ts
index e52a59188..92345457c 100644
--- a/packages/backend/src/core/entities/FlashEntityService.ts
+++ b/packages/backend/src/core/entities/FlashEntityService.ts
@@ -40,7 +40,7 @@ export class FlashEntityService {
 			summary: flash.summary,
 			script: flash.script,
 			likedCount: flash.likedCount,
-			isLiked: meId ? await this.flashLikesRepository.findOneBy({ flashId: flash.id, userId: meId }).then(x => x != null) : undefined,
+			isLiked: meId ? await this.flashLikesRepository.exist({ where: { flashId: flash.id, userId: meId } }) : undefined,
 		});
 	}
 
diff --git a/packages/backend/src/core/entities/GalleryPostEntityService.ts b/packages/backend/src/core/entities/GalleryPostEntityService.ts
index 632c75304..c44a5df11 100644
--- a/packages/backend/src/core/entities/GalleryPostEntityService.ts
+++ b/packages/backend/src/core/entities/GalleryPostEntityService.ts
@@ -46,7 +46,7 @@ export class GalleryPostEntityService {
 			tags: post.tags.length > 0 ? post.tags : undefined,
 			isSensitive: post.isSensitive,
 			likedCount: post.likedCount,
-			isLiked: meId ? await this.galleryLikesRepository.findOneBy({ postId: post.id, userId: meId }).then(x => x != null) : undefined,
+			isLiked: meId ? await this.galleryLikesRepository.exist({ where: { postId: post.id, userId: meId } }) : undefined,
 		});
 	}
 
diff --git a/packages/backend/src/core/entities/NoteEntityService.ts b/packages/backend/src/core/entities/NoteEntityService.ts
index e730c0eb8..546e5f56d 100644
--- a/packages/backend/src/core/entities/NoteEntityService.ts
+++ b/packages/backend/src/core/entities/NoteEntityService.ts
@@ -106,16 +106,14 @@ export class NoteEntityService implements OnModuleInit {
 				hide = false;
 			} else {
 			// フォロワーかどうか
-				const following = await this.followingsRepository.findOneBy({
-					followeeId: packedNote.userId,
-					followerId: meId,
+				const isFollowing = await this.followingsRepository.exist({
+					where: {
+						followeeId: packedNote.userId,
+						followerId: meId,
+					},
 				});
 
-				if (following == null) {
-					hide = true;
-				} else {
-					hide = false;
-				}
+				hide = !isFollowing;
 			}
 		}
 
diff --git a/packages/backend/src/core/entities/PageEntityService.ts b/packages/backend/src/core/entities/PageEntityService.ts
index d6da85663..94b26a501 100644
--- a/packages/backend/src/core/entities/PageEntityService.ts
+++ b/packages/backend/src/core/entities/PageEntityService.ts
@@ -97,7 +97,7 @@ export class PageEntityService {
 			eyeCatchingImage: page.eyeCatchingImageId ? await this.driveFileEntityService.pack(page.eyeCatchingImageId) : null,
 			attachedFiles: this.driveFileEntityService.packMany((await Promise.all(attachedFiles)).filter((x): x is DriveFile => x != null)),
 			likedCount: page.likedCount,
-			isLiked: meId ? await this.pageLikesRepository.findOneBy({ pageId: page.id, userId: meId }).then(x => x != null) : undefined,
+			isLiked: meId ? await this.pageLikesRepository.exist({ where: { pageId: page.id, userId: meId } }) : undefined,
 		});
 	}
 
diff --git a/packages/backend/src/core/entities/UserEntityService.ts b/packages/backend/src/core/entities/UserEntityService.ts
index 6dacaa103..7d248f852 100644
--- a/packages/backend/src/core/entities/UserEntityService.ts
+++ b/packages/backend/src/core/entities/UserEntityService.ts
@@ -230,12 +230,14 @@ export class UserEntityService implements OnModuleInit {
 		/*
 		const myAntennas = (await this.antennaService.getAntennas()).filter(a => a.userId === userId);
 
-		const unread = myAntennas.length > 0 ? await this.antennaNotesRepository.findOneBy({
-			antennaId: In(myAntennas.map(x => x.id)),
-			read: false,
-		}) : null;
+		const isUnread = (myAntennas.length > 0 ? await this.antennaNotesRepository.exist({
+			where: {
+				antennaId: In(myAntennas.map(x => x.id)),
+				read: false,
+			},
+		}) : false);
 
-		return unread != null;
+		return isUnread;
 		*/
 		return false; // TODO
 	}
diff --git a/packages/backend/src/server/api/SignupApiService.ts b/packages/backend/src/server/api/SignupApiService.ts
index fc5f3811e..5e18dcbe0 100644
--- a/packages/backend/src/server/api/SignupApiService.ts
+++ b/packages/backend/src/server/api/SignupApiService.ts
@@ -128,12 +128,12 @@ export class SignupApiService {
 		}
 
 		if (instance.emailRequiredForSignup) {
-			if (await this.usersRepository.findOneBy({ usernameLower: username.toLowerCase(), host: IsNull() })) {
+			if (await this.usersRepository.exist({ where: { usernameLower: username.toLowerCase(), host: IsNull() } })) {
 				throw new FastifyReplyError(400, 'DUPLICATED_USERNAME');
 			}
 
 			// Check deleted username duplication
-			if (await this.usedUsernamesRepository.findOneBy({ username: username.toLowerCase() })) {
+			if (await this.usedUsernamesRepository.exist({ where: { username: username.toLowerCase() } })) {
 				throw new FastifyReplyError(400, 'USED_USERNAME');
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/admin/promo/create.ts b/packages/backend/src/server/api/endpoints/admin/promo/create.ts
index bee1ffbae..8401cf51d 100644
--- a/packages/backend/src/server/api/endpoints/admin/promo/create.ts
+++ b/packages/backend/src/server/api/endpoints/admin/promo/create.ts
@@ -50,9 +50,9 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				throw e;
 			});
 
-			const exist = await this.promoNotesRepository.findOneBy({ noteId: note.id });
+			const exist = await this.promoNotesRepository.exist({ where: { noteId: note.id } });
 
-			if (exist != null) {
+			if (exist) {
 				throw new ApiError(meta.errors.alreadyPromoted);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/admin/roles/update.ts b/packages/backend/src/server/api/endpoints/admin/roles/update.ts
index 467f157a6..1fedab454 100644
--- a/packages/backend/src/server/api/endpoints/admin/roles/update.ts
+++ b/packages/backend/src/server/api/endpoints/admin/roles/update.ts
@@ -69,8 +69,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private globalEventService: GlobalEventService,
 	) {
 		super(meta, paramDef, async (ps) => {
-			const role = await this.rolesRepository.findOneBy({ id: ps.roleId });
-			if (role == null) {
+			const roleExist = await this.rolesRepository.exist({ where: { id: ps.roleId } });
+			if (!roleExist) {
 				throw new ApiError(meta.errors.noSuchRole);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/auth/accept.ts b/packages/backend/src/server/api/endpoints/auth/accept.ts
index e69f9c12e..aa199ab73 100644
--- a/packages/backend/src/server/api/endpoints/auth/accept.ts
+++ b/packages/backend/src/server/api/endpoints/auth/accept.ts
@@ -58,12 +58,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			const accessToken = secureRndstr(32);
 
 			// Fetch exist access token
-			const exist = await this.accessTokensRepository.findOneBy({
-				appId: session.appId,
-				userId: me.id,
+			const exist = await this.accessTokensRepository.exist({
+				where: {
+					appId: session.appId,
+					userId: me.id,
+				},
 			});
 
-			if (exist == null) {
+			if (!exist) {
 				const app = await this.appsRepository.findOneByOrFail({ id: session.appId });
 
 				// Generate Hash
diff --git a/packages/backend/src/server/api/endpoints/blocking/create.ts b/packages/backend/src/server/api/endpoints/blocking/create.ts
index d9ba99f20..4ad40c8f1 100644
--- a/packages/backend/src/server/api/endpoints/blocking/create.ts
+++ b/packages/backend/src/server/api/endpoints/blocking/create.ts
@@ -84,12 +84,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			});
 
 			// Check if already blocking
-			const exist = await this.blockingsRepository.findOneBy({
-				blockerId: blocker.id,
-				blockeeId: blockee.id,
+			const exist = await this.blockingsRepository.exist({
+				where: {
+					blockerId: blocker.id,
+					blockeeId: blockee.id,
+				},
 			});
 
-			if (exist != null) {
+			if (exist) {
 				throw new ApiError(meta.errors.alreadyBlocking);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/blocking/delete.ts b/packages/backend/src/server/api/endpoints/blocking/delete.ts
index 46dd26a45..38913ae93 100644
--- a/packages/backend/src/server/api/endpoints/blocking/delete.ts
+++ b/packages/backend/src/server/api/endpoints/blocking/delete.ts
@@ -84,12 +84,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			});
 
 			// Check not blocking
-			const exist = await this.blockingsRepository.findOneBy({
-				blockerId: blocker.id,
-				blockeeId: blockee.id,
+			const exist = await this.blockingsRepository.exist({
+				where: {
+					blockerId: blocker.id,
+					blockeeId: blockee.id,
+				}
 			});
 
-			if (exist == null) {
+			if (!exist) {
 				throw new ApiError(meta.errors.notBlocking);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/clips/add-note.ts b/packages/backend/src/server/api/endpoints/clips/add-note.ts
index c3561e2a7..2837f2cf8 100644
--- a/packages/backend/src/server/api/endpoints/clips/add-note.ts
+++ b/packages/backend/src/server/api/endpoints/clips/add-note.ts
@@ -87,12 +87,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				throw e;
 			});
 
-			const exist = await this.clipNotesRepository.findOneBy({
-				noteId: note.id,
-				clipId: clip.id,
+			const exist = await this.clipNotesRepository.exist({
+				where: {
+					noteId: note.id,
+					clipId: clip.id,
+				},
 			});
 
-			if (exist != null) {
+			if (exist) {
 				throw new ApiError(meta.errors.alreadyClipped);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/clips/favorite.ts b/packages/backend/src/server/api/endpoints/clips/favorite.ts
index f08caaf8d..ce0985553 100644
--- a/packages/backend/src/server/api/endpoints/clips/favorite.ts
+++ b/packages/backend/src/server/api/endpoints/clips/favorite.ts
@@ -58,12 +58,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				throw new ApiError(meta.errors.noSuchClip);
 			}
 
-			const exist = await this.clipFavoritesRepository.findOneBy({
-				clipId: clip.id,
-				userId: me.id,
+			const exist = await this.clipFavoritesRepository.exist({
+				where: {
+					clipId: clip.id,
+					userId: me.id,
+				},
 			});
 
-			if (exist != null) {
+			if (exist) {
 				throw new ApiError(meta.errors.alreadyFavorited);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/drive/files/check-existence.ts b/packages/backend/src/server/api/endpoints/drive/files/check-existence.ts
index 290cd4d2c..cdcdde7e8 100644
--- a/packages/backend/src/server/api/endpoints/drive/files/check-existence.ts
+++ b/packages/backend/src/server/api/endpoints/drive/files/check-existence.ts
@@ -34,12 +34,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private driveFilesRepository: DriveFilesRepository,
 	) {
 		super(meta, paramDef, async (ps, me) => {
-			const file = await this.driveFilesRepository.findOneBy({
-				md5: ps.md5,
-				userId: me.id,
+			const exist = await this.driveFilesRepository.exist({
+				where: {
+					md5: ps.md5,
+					userId: me.id,
+				},
 			});
 
-			return file != null;
+			return exist;
 		});
 	}
 }
diff --git a/packages/backend/src/server/api/endpoints/flash/like.ts b/packages/backend/src/server/api/endpoints/flash/like.ts
index 23de2f397..57245f9f4 100644
--- a/packages/backend/src/server/api/endpoints/flash/like.ts
+++ b/packages/backend/src/server/api/endpoints/flash/like.ts
@@ -66,12 +66,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			}
 
 			// if already liked
-			const exist = await this.flashLikesRepository.findOneBy({
-				flashId: flash.id,
-				userId: me.id,
+			const exist = await this.flashLikesRepository.exist({
+				where: {
+					flashId: flash.id,
+					userId: me.id,
+				},
 			});
 
-			if (exist != null) {
+			if (exist) {
 				throw new ApiError(meta.errors.alreadyLiked);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/following/create.ts b/packages/backend/src/server/api/endpoints/following/create.ts
index 4ad16de91..009fc96f6 100644
--- a/packages/backend/src/server/api/endpoints/following/create.ts
+++ b/packages/backend/src/server/api/endpoints/following/create.ts
@@ -99,12 +99,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			});
 
 			// Check if already following
-			const exist = await this.followingsRepository.findOneBy({
-				followerId: follower.id,
-				followeeId: followee.id,
+			const exist = await this.followingsRepository.exist({
+				where: {
+					followerId: follower.id,
+					followeeId: followee.id,
+				},
 			});
 
-			if (exist != null) {
+			if (exist) {
 				throw new ApiError(meta.errors.alreadyFollowing);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/following/delete.ts b/packages/backend/src/server/api/endpoints/following/delete.ts
index 4f12db127..570c4eb81 100644
--- a/packages/backend/src/server/api/endpoints/following/delete.ts
+++ b/packages/backend/src/server/api/endpoints/following/delete.ts
@@ -84,12 +84,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			});
 
 			// Check not following
-			const exist = await this.followingsRepository.findOneBy({
-				followerId: follower.id,
-				followeeId: followee.id,
+			const exist = await this.followingsRepository.exist({
+				where: {
+					followerId: follower.id,
+					followeeId: followee.id,
+				},
 			});
 
-			if (exist == null) {
+			if (!exist) {
 				throw new ApiError(meta.errors.notFollowing);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/gallery/posts/like.ts b/packages/backend/src/server/api/endpoints/gallery/posts/like.ts
index 6ac5fa860..c0bb55f64 100644
--- a/packages/backend/src/server/api/endpoints/gallery/posts/like.ts
+++ b/packages/backend/src/server/api/endpoints/gallery/posts/like.ts
@@ -66,12 +66,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			}
 
 			// if already liked
-			const exist = await this.galleryLikesRepository.findOneBy({
-				postId: post.id,
-				userId: me.id,
+			const exist = await this.galleryLikesRepository.exist({
+				where: {
+					postId: post.id,
+					userId: me.id,
+				},
 			});
 
-			if (exist != null) {
+			if (exist) {
 				throw new ApiError(meta.errors.alreadyLiked);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/i/import-antennas.ts b/packages/backend/src/server/api/endpoints/i/import-antennas.ts
index 12ec5855d..8582e98f7 100644
--- a/packages/backend/src/server/api/endpoints/i/import-antennas.ts
+++ b/packages/backend/src/server/api/endpoints/i/import-antennas.ts
@@ -66,8 +66,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private downloadService: DownloadService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
-			const users = await this.usersRepository.findOneBy({ id: me.id });
-			if (users === null) throw new ApiError(meta.errors.noSuchUser);
+			const userExist = await this.usersRepository.exist({ where: { id: me.id } });
+			if (!userExist) throw new ApiError(meta.errors.noSuchUser);
 			const file = await this.driveFilesRepository.findOneBy({ id: ps.fileId });
 			if (file === null) throw new ApiError(meta.errors.noSuchFile);
 			if (file.size === 0) throw new ApiError(meta.errors.emptyFile);
diff --git a/packages/backend/src/server/api/endpoints/i/read-announcement.ts b/packages/backend/src/server/api/endpoints/i/read-announcement.ts
index b8922b91e..352fe54c5 100644
--- a/packages/backend/src/server/api/endpoints/i/read-announcement.ts
+++ b/packages/backend/src/server/api/endpoints/i/read-announcement.ts
@@ -47,19 +47,21 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			// Check if announcement exists
-			const announcement = await this.announcementsRepository.findOneBy({ id: ps.announcementId });
+			const announcementExist = await this.announcementsRepository.exist({ where: { id: ps.announcementId } });
 
-			if (announcement == null) {
+			if (!announcementExist) {
 				throw new ApiError(meta.errors.noSuchAnnouncement);
 			}
 
 			// Check if already read
-			const read = await this.announcementReadsRepository.findOneBy({
-				announcementId: ps.announcementId,
-				userId: me.id,
+			const alreadyRead = await this.announcementReadsRepository.exist({
+				where: {
+					announcementId: ps.announcementId,
+					userId: me.id,
+				},
 			});
 
-			if (read != null) {
+			if (alreadyRead) {
 				return;
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/i/revoke-token.ts b/packages/backend/src/server/api/endpoints/i/revoke-token.ts
index 93daeb0cd..415a60147 100644
--- a/packages/backend/src/server/api/endpoints/i/revoke-token.ts
+++ b/packages/backend/src/server/api/endpoints/i/revoke-token.ts
@@ -28,9 +28,9 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private globalEventService: GlobalEventService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
-			const token = await this.accessTokensRepository.findOneBy({ id: ps.tokenId });
+			const tokenExist = await this.accessTokensRepository.exist({ where: { id: ps.tokenId } });
 
-			if (token) {
+			if (tokenExist) {
 				await this.accessTokensRepository.delete({
 					id: ps.tokenId,
 					userId: me.id,
diff --git a/packages/backend/src/server/api/endpoints/mute/create.ts b/packages/backend/src/server/api/endpoints/mute/create.ts
index ee358d5c6..ef53f9ef4 100644
--- a/packages/backend/src/server/api/endpoints/mute/create.ts
+++ b/packages/backend/src/server/api/endpoints/mute/create.ts
@@ -79,12 +79,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			});
 
 			// Check if already muting
-			const exist = await this.mutingsRepository.findOneBy({
-				muterId: muter.id,
-				muteeId: mutee.id,
+			const exist = await this.mutingsRepository.exist({
+				where: {
+					muterId: muter.id,
+					muteeId: mutee.id,
+				},
 			});
 
-			if (exist != null) {
+			if (exist) {
 				throw new ApiError(meta.errors.alreadyMuting);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/notes/create.ts b/packages/backend/src/server/api/endpoints/notes/create.ts
index 96be5ed84..739316997 100644
--- a/packages/backend/src/server/api/endpoints/notes/create.ts
+++ b/packages/backend/src/server/api/endpoints/notes/create.ts
@@ -217,11 +217,13 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 
 				// Check blocking
 				if (renote.userId !== me.id) {
-					const block = await this.blockingsRepository.findOneBy({
-						blockerId: renote.userId,
-						blockeeId: me.id,
+					const blockExist = await this.blockingsRepository.exist({
+						where: {
+							blockerId: renote.userId,
+							blockeeId: me.id,
+						},
 					});
-					if (block) {
+					if (blockExist) {
 						throw new ApiError(meta.errors.youHaveBeenBlocked);
 					}
 				}
@@ -240,11 +242,13 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 
 				// Check blocking
 				if (reply.userId !== me.id) {
-					const block = await this.blockingsRepository.findOneBy({
-						blockerId: reply.userId,
-						blockeeId: me.id,
+					const blockExist = await this.blockingsRepository.exist({
+						where: {
+							blockerId: reply.userId,
+							blockeeId: me.id,
+						},
 					});
-					if (block) {
+					if (blockExist) {
 						throw new ApiError(meta.errors.youHaveBeenBlocked);
 					}
 				}
diff --git a/packages/backend/src/server/api/endpoints/notes/favorites/create.ts b/packages/backend/src/server/api/endpoints/notes/favorites/create.ts
index 611ea1956..9299d6603 100644
--- a/packages/backend/src/server/api/endpoints/notes/favorites/create.ts
+++ b/packages/backend/src/server/api/endpoints/notes/favorites/create.ts
@@ -63,12 +63,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			});
 
 			// if already favorited
-			const exist = await this.noteFavoritesRepository.findOneBy({
-				noteId: note.id,
-				userId: me.id,
+			const exist = await this.noteFavoritesRepository.exist({
+				where: {
+					noteId: note.id,
+					userId: me.id,
+				},
 			});
 
-			if (exist != null) {
+			if (exist) {
 				throw new ApiError(meta.errors.alreadyFavorited);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/pages/like.ts b/packages/backend/src/server/api/endpoints/pages/like.ts
index 543c126d9..bc6648810 100644
--- a/packages/backend/src/server/api/endpoints/pages/like.ts
+++ b/packages/backend/src/server/api/endpoints/pages/like.ts
@@ -66,12 +66,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			}
 
 			// if already liked
-			const exist = await this.pageLikesRepository.findOneBy({
-				pageId: page.id,
-				userId: me.id,
+			const exist = await this.pageLikesRepository.exist({
+				where: {
+					pageId: page.id,
+					userId: me.id,
+				},
 			});
 
-			if (exist != null) {
+			if (exist) {
 				throw new ApiError(meta.errors.alreadyLiked);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/promo/read.ts b/packages/backend/src/server/api/endpoints/promo/read.ts
index 90febdbce..9baa930f5 100644
--- a/packages/backend/src/server/api/endpoints/promo/read.ts
+++ b/packages/backend/src/server/api/endpoints/promo/read.ts
@@ -44,12 +44,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				throw err;
 			});
 
-			const exist = await this.promoReadsRepository.findOneBy({
-				noteId: note.id,
-				userId: me.id,
+			const exist = await this.promoReadsRepository.exist({
+				where: {
+					noteId: note.id,
+					userId: me.id,
+				},
 			});
 
-			if (exist != null) {
+			if (exist) {
 				return;
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/users/followers.ts b/packages/backend/src/server/api/endpoints/users/followers.ts
index c6f71474b..18d66500a 100644
--- a/packages/backend/src/server/api/endpoints/users/followers.ts
+++ b/packages/backend/src/server/api/endpoints/users/followers.ts
@@ -97,11 +97,13 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				if (me == null) {
 					throw new ApiError(meta.errors.forbidden);
 				} else if (me.id !== user.id) {
-					const following = await this.followingsRepository.findOneBy({
-						followeeId: user.id,
-						followerId: me.id,
+					const isFollowing = await this.followingsRepository.exist({
+						where: {
+							followeeId: user.id,
+							followerId: me.id,
+						},
 					});
-					if (following == null) {
+					if (!isFollowing) {
 						throw new ApiError(meta.errors.forbidden);
 					}
 				}
diff --git a/packages/backend/src/server/api/endpoints/users/following.ts b/packages/backend/src/server/api/endpoints/users/following.ts
index b072c9662..6ea7b923d 100644
--- a/packages/backend/src/server/api/endpoints/users/following.ts
+++ b/packages/backend/src/server/api/endpoints/users/following.ts
@@ -97,11 +97,13 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				if (me == null) {
 					throw new ApiError(meta.errors.forbidden);
 				} else if (me.id !== user.id) {
-					const following = await this.followingsRepository.findOneBy({
-						followeeId: user.id,
-						followerId: me.id,
+					const isFollowing = await this.followingsRepository.exist({
+						where: {
+							followeeId: user.id,
+							followerId: me.id,
+						},
 					});
-					if (following == null) {
+					if (!isFollowing) {
 						throw new ApiError(meta.errors.forbidden);
 					}
 				}
diff --git a/packages/backend/src/server/api/endpoints/users/lists/create-from-public.ts b/packages/backend/src/server/api/endpoints/users/lists/create-from-public.ts
index cccffcdad..beb0ba85f 100644
--- a/packages/backend/src/server/api/endpoints/users/lists/create-from-public.ts
+++ b/packages/backend/src/server/api/endpoints/users/lists/create-from-public.ts
@@ -84,11 +84,13 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private roleService: RoleService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
-			const list = await this.userListsRepository.findOneBy({
-				id: ps.listId,
-				isPublic: true,
+			const listExist = await this.userListsRepository.exist({
+				where: {
+					id: ps.listId,
+					isPublic: true,
+				},
 			});
-			if (list === null) throw new ApiError(meta.errors.noSuchList);
+			if (!listExist) throw new ApiError(meta.errors.noSuchList);
 			const currentCount = await this.userListsRepository.countBy({
 				userId: me.id,
 			});
@@ -114,18 +116,22 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				});
 
 				if (currentUser.id !== me.id) {
-					const block = await this.blockingsRepository.findOneBy({
-						blockerId: currentUser.id,
-						blockeeId: me.id,
+					const blockExist = await this.blockingsRepository.exist({
+						where: {
+							blockerId: currentUser.id,
+							blockeeId: me.id,
+						},
 					});
-					if (block) {
+					if (blockExist) {
 						throw new ApiError(meta.errors.youHaveBeenBlocked);
 					}
 				}
 
-				const exist = await this.userListJoiningsRepository.findOneBy({
-					userListId: userList.id,
-					userId: currentUser.id,
+				const exist = await this.userListJoiningsRepository.exist({
+					where: {
+						userListId: userList.id,
+						userId: currentUser.id,
+					},
 				});
 
 				if (exist) {
diff --git a/packages/backend/src/server/api/endpoints/users/lists/favorite.ts b/packages/backend/src/server/api/endpoints/users/lists/favorite.ts
index ea1a022be..2c09a47fe 100644
--- a/packages/backend/src/server/api/endpoints/users/lists/favorite.ts
+++ b/packages/backend/src/server/api/endpoints/users/lists/favorite.ts
@@ -41,21 +41,25 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private idService: IdService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
-			const userList = await this.userListsRepository.findOneBy({
-				id: ps.listId,
-				isPublic: true,
+			const userListExist = await this.userListsRepository.exist({
+				where: {
+					id: ps.listId,
+					isPublic: true,
+				},
 			});
 
-			if (userList === null) {
+			if (!userListExist) {
 				throw new ApiError(meta.errors.noSuchList);
 			}
 
-			const exist = await this.userListFavoritesRepository.findOneBy({
-				userId: me.id,
-				userListId: ps.listId,
+			const exist = await this.userListFavoritesRepository.exist({
+				where: {
+					userId: me.id,
+					userListId: ps.listId,
+				},
 			});
 
-			if (exist !== null) {
+			if (exist) {
 				throw new ApiError(meta.errors.alreadyFavorited);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/users/lists/push.ts b/packages/backend/src/server/api/endpoints/users/lists/push.ts
index 925037e48..6e1f6b2c6 100644
--- a/packages/backend/src/server/api/endpoints/users/lists/push.ts
+++ b/packages/backend/src/server/api/endpoints/users/lists/push.ts
@@ -100,18 +100,22 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 
 			// Check blocking
 			if (user.id !== me.id) {
-				const block = await this.blockingsRepository.findOneBy({
-					blockerId: user.id,
-					blockeeId: me.id,
+				const blockExist = await this.blockingsRepository.exist({
+					where: {
+						blockerId: user.id,
+						blockeeId: me.id,
+					},
 				});
-				if (block) {
+				if (blockExist) {
 					throw new ApiError(meta.errors.youHaveBeenBlocked);
 				}
 			}
 
-			const exist = await this.userListJoiningsRepository.findOneBy({
-				userListId: userList.id,
-				userId: user.id,
+			const exist = await this.userListJoiningsRepository.exist({
+				where: {
+					userListId: userList.id,
+					userId: user.id,
+				},
 			});
 
 			if (exist) {
diff --git a/packages/backend/src/server/api/endpoints/users/lists/show.ts b/packages/backend/src/server/api/endpoints/users/lists/show.ts
index 8077841c8..3fd418d04 100644
--- a/packages/backend/src/server/api/endpoints/users/lists/show.ts
+++ b/packages/backend/src/server/api/endpoints/users/lists/show.ts
@@ -69,10 +69,12 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 					userListId: ps.listId,
 				});
 				if (me !== null) {
-					additionalProperties.isLiked = (await this.userListFavoritesRepository.findOneBy({
-						userId: me.id,
-						userListId: ps.listId,
-					}) !== null);
+					additionalProperties.isLiked = await this.userListFavoritesRepository.exist({
+						where: {
+							userId: me.id,
+							userListId: ps.listId,
+						},
+					});
 				} else {
 					additionalProperties.isLiked = false;
 				}
diff --git a/packages/backend/src/server/api/endpoints/users/lists/unfavorite.ts b/packages/backend/src/server/api/endpoints/users/lists/unfavorite.ts
index be8e31781..a7c3b5894 100644
--- a/packages/backend/src/server/api/endpoints/users/lists/unfavorite.ts
+++ b/packages/backend/src/server/api/endpoints/users/lists/unfavorite.ts
@@ -39,12 +39,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private userListFavoritesRepository: UserListFavoritesRepository,
 	) {
 		super(meta, paramDef, async (ps, me) => {
-			const userList = await this.userListsRepository.findOneBy({
-				id: ps.listId,
-				isPublic: true,
+			const userListExist = await this.userListsRepository.exist({
+				where: {
+					id: ps.listId,
+					isPublic: true,
+				},
 			});
 
-			if (userList === null) {
+			if (!userListExist) {
 				throw new ApiError(meta.errors.noSuchList);
 			}
 
diff --git a/packages/backend/src/server/api/stream/channels/user-list.ts b/packages/backend/src/server/api/stream/channels/user-list.ts
index d97d2b8ba..ea4cff0bc 100644
--- a/packages/backend/src/server/api/stream/channels/user-list.ts
+++ b/packages/backend/src/server/api/stream/channels/user-list.ts
@@ -34,11 +34,13 @@ class UserListChannel extends Channel {
 		this.listId = params.listId as string;
 
 		// Check existence and owner
-		const list = await this.userListsRepository.findOneBy({
-			id: this.listId,
-			userId: this.user!.id,
+		const listExist = await this.userListsRepository.exist({
+			where: {
+				id: this.listId,
+				userId: this.user!.id,
+			},
 		});
-		if (!list) return;
+		if (!listExist) return;
 
 		// Subscribe stream
 		this.subscriber.on(`userListStream:${this.listId}`, this.send);
diff --git a/packages/frontend/src/cache.ts b/packages/frontend/src/cache.ts
index c95da64bb..cb315c8ff 100644
--- a/packages/frontend/src/cache.ts
+++ b/packages/frontend/src/cache.ts
@@ -4,3 +4,4 @@ import { Cache } from '@/scripts/cache';
 export const clipsCache = new Cache<misskey.entities.Clip[]>(Infinity);
 export const rolesCache = new Cache(Infinity);
 export const userListsCache = new Cache<misskey.entities.UserList[]>(Infinity);
+export const antennasCache = new Cache<misskey.entities.Antenna[]>(Infinity);
diff --git a/packages/frontend/src/components/MkAvatars.vue b/packages/frontend/src/components/MkAvatars.vue
index 630620fc0..437dce0a1 100644
--- a/packages/frontend/src/components/MkAvatars.vue
+++ b/packages/frontend/src/components/MkAvatars.vue
@@ -1,24 +1,29 @@
 <template>
 <div>
-	<div v-for="user in users" :key="user.id" style="display:inline-block;width:32px;height:32px;margin-right:8px;">
+	<div v-for="user in users.slice(0, limit)" :key="user.id" style="display:inline-block;width:32px;height:32px;margin-right:8px;">
 		<MkAvatar :user="user" style="width:32px; height:32px;" indicator link preview/>
 	</div>
+	<div v-if="users.length > limit" style="display: inline-block;">...</div>
 </div>
 </template>
 
 <script lang="ts" setup>
 import { onMounted, ref } from 'vue';
 import * as os from '@/os';
+import { UserLite } from 'misskey-js/built/entities';
 
-const props = defineProps<{
+const props = withDefaults(defineProps<{
 	userIds: string[];
-}>();
+	limit?: number;
+}>(), {
+	limit: Infinity,
+});
 
-const users = ref([]);
+const users = ref<UserLite[]>([]);
 
 onMounted(async () => {
 	users.value = await os.api('users/show', {
 		userIds: props.userIds,
-	});
+	}) as unknown as UserLite[];
 });
 </script>
diff --git a/packages/frontend/src/components/MkMediaList.vue b/packages/frontend/src/components/MkMediaList.vue
index 34f59c557..be0aed652 100644
--- a/packages/frontend/src/components/MkMediaList.vue
+++ b/packages/frontend/src/components/MkMediaList.vue
@@ -113,7 +113,7 @@ onMounted(() => {
 			right: 0,
 		},
 		imageClickAction: 'close',
-		tapAction: 'toggle-controls',
+		tapAction: 'close',
 		bgOpacity: 1,
 		showAnimationDuration: 100,
 		hideAnimationDuration: 100,
diff --git a/packages/frontend/src/pages/channel.vue b/packages/frontend/src/pages/channel.vue
index bcc0fc686..2a056f21d 100644
--- a/packages/frontend/src/pages/channel.vue
+++ b/packages/frontend/src/pages/channel.vue
@@ -87,7 +87,7 @@ const props = defineProps<{
 	channelId: string;
 }>();
 
-let tab = $ref('timeline');
+let tab = $ref('overview');
 let channel = $ref(null);
 let favorited = $ref(false);
 let searchQuery = $ref('');
@@ -107,6 +107,9 @@ watch(() => props.channelId, async () => {
 		channelId: props.channelId,
 	});
 	favorited = channel.isFavorited;
+	if (favorited || channel.isFollowing) {
+		tab = 'timeline';
+	}
 }, { immediate: true });
 
 function edit() {
diff --git a/packages/frontend/src/pages/custom-emojis-manager.vue b/packages/frontend/src/pages/custom-emojis-manager.vue
index dde4d67f1..359bbeadc 100644
--- a/packages/frontend/src/pages/custom-emojis-manager.vue
+++ b/packages/frontend/src/pages/custom-emojis-manager.vue
@@ -18,7 +18,7 @@
 						<MkButton inline @click="setTagBulk">Set tag</MkButton>
 						<MkButton inline @click="addTagBulk">Add tag</MkButton>
 						<MkButton inline @click="removeTagBulk">Remove tag</MkButton>
-						<MkButton inline @click="setLisenceBulk">Set Lisence</MkButton>
+						<MkButton inline @click="setLicenseBulk">Set License</MkButton>
 						<MkButton inline danger @click="delBulk">Delete</MkButton>
 					</div>
 					<MkPagination ref="emojisPaginationComponent" :pagination="pagination">
@@ -221,7 +221,7 @@ const setCategoryBulk = async () => {
 	emojisPaginationComponent.value.reload();
 };
 
-const setLisenceBulk = async () => {
+const setLicenseBulk = async () => {
 	const { canceled, result } = await os.inputText({
 		title: 'License',
 	});
diff --git a/packages/frontend/src/pages/my-antennas/create.vue b/packages/frontend/src/pages/my-antennas/create.vue
index 355d18fdb..632c36bbf 100644
--- a/packages/frontend/src/pages/my-antennas/create.vue
+++ b/packages/frontend/src/pages/my-antennas/create.vue
@@ -9,6 +9,7 @@ import XAntenna from './editor.vue';
 import { i18n } from '@/i18n';
 import { definePageMetadata } from '@/scripts/page-metadata';
 import { useRouter } from '@/router';
+import { antennasCache } from '@/cache';
 
 const router = useRouter();
 
@@ -26,13 +27,10 @@ let draft = $ref({
 });
 
 function onAntennaCreated() {
+	antennasCache.delete();
 	router.push('/my/antennas');
 }
 
-const headerActions = $computed(() => []);
-
-const headerTabs = $computed(() => []);
-
 definePageMetadata({
 	title: i18n.ts.manageAntennas,
 	icon: 'ti ti-antenna',
diff --git a/packages/frontend/src/pages/my-antennas/edit.vue b/packages/frontend/src/pages/my-antennas/edit.vue
index da9b2de48..3fb9690ac 100644
--- a/packages/frontend/src/pages/my-antennas/edit.vue
+++ b/packages/frontend/src/pages/my-antennas/edit.vue
@@ -10,6 +10,7 @@ import * as os from '@/os';
 import { i18n } from '@/i18n';
 import { useRouter } from '@/router';
 import { definePageMetadata } from '@/scripts/page-metadata';
+import { antennasCache } from '@/cache';
 
 const router = useRouter();
 
@@ -20,6 +21,7 @@ const props = defineProps<{
 }>();
 
 function onAntennaUpdated() {
+	antennasCache.delete();
 	router.push('/my/antennas');
 }
 
@@ -27,10 +29,6 @@ os.api('antennas/show', { antennaId: props.antennaId }).then((antennaResponse) =
 	antenna = antennaResponse;
 });
 
-const headerActions = $computed(() => []);
-
-const headerTabs = $computed(() => []);
-
 definePageMetadata({
 	title: i18n.ts.manageAntennas,
 	icon: 'ti ti-antenna',
diff --git a/packages/frontend/src/pages/my-antennas/index.vue b/packages/frontend/src/pages/my-antennas/index.vue
index 2ca026b9a..1e9136f1f 100644
--- a/packages/frontend/src/pages/my-antennas/index.vue
+++ b/packages/frontend/src/pages/my-antennas/index.vue
@@ -2,15 +2,20 @@
 <MkStickyContainer>
 	<template #header><MkPageHeader :actions="headerActions" :tabs="headerTabs"/></template>
 	<MkSpacer :contentMax="700">
-		<div class="ieepwinx">
-			<MkButton :link="true" to="/my/antennas/create" primary class="add"><i class="ti ti-plus"></i> {{ i18n.ts.add }}</MkButton>
+		<div>
+			<div v-if="antennas.length === 0" class="empty">
+				<div class="_fullinfo">
+					<img :src="infoImageUrl" class="_ghost"/>
+					<div>{{ i18n.ts.nothing }}</div>
+				</div>
+			</div>
 
-			<div class="">
-				<MkPagination v-slot="{items}" ref="list" :pagination="pagination">
-					<MkA v-for="antenna in items" :key="antenna.id" class="ljoevbzj" :to="`/my/antennas/${antenna.id}`">
-						<div class="name">{{ antenna.name }}</div>
-					</MkA>
-				</MkPagination>
+			<MkButton :link="true" to="/my/antennas/create" primary :class="$style.add"><i class="ti ti-plus"></i> {{ i18n.ts.add }}</MkButton>
+
+			<div v-if="antennas.length > 0" class="_gaps">
+				<MkA v-for="antenna in antennas" :key="antenna.id" :class="$style.antenna" :to="`/my/antennas/${antenna.id}`">
+					<div class="name">{{ antenna.name }}</div>
+				</MkA>
 			</div>
 		</div>
 	</MkSpacer>
@@ -18,19 +23,31 @@
 </template>
 
 <script lang="ts" setup>
-import { } from 'vue';
-import MkPagination from '@/components/MkPagination.vue';
 import MkButton from '@/components/MkButton.vue';
 import { i18n } from '@/i18n';
 import { definePageMetadata } from '@/scripts/page-metadata';
+import { antennasCache } from '@/cache';
+import { api } from '@/os';
+import { onActivated } from 'vue';
+import { infoImageUrl } from '@/instance';
 
-const pagination = {
-	endpoint: 'antennas/list' as const,
-	noPaging: true,
-	limit: 10,
-};
+const antennas = $computed(() => antennasCache.value.value ?? []);
 
-const headerActions = $computed(() => []);
+function fetch() {
+	antennasCache.fetch(() => api('antennas/list'));
+}
+
+fetch();
+
+const headerActions = $computed(() => [{
+	asFullButton: true,
+	icon: 'ti ti-refresh',
+	text: i18n.ts.reload,
+	handler: () => {
+		antennasCache.delete();
+		fetch();
+	},
+}]);
 
 const headerTabs = $computed(() => []);
 
@@ -38,30 +55,30 @@ definePageMetadata({
 	title: i18n.ts.manageAntennas,
 	icon: 'ti ti-antenna',
 });
+
+onActivated(() => {
+	antennasCache.fetch(() => api('antennas/list'));
+});
 </script>
 
-<style lang="scss" scoped>
-.ieepwinx {
+<style lang="scss" module>
+.add {
+	margin: 0 auto 16px auto;
+}
 
-	> .add {
-		margin: 0 auto 16px auto;
-	}
+.antenna {
+	display: block;
+	padding: 16px;
+	border: solid 1px var(--divider);
+	border-radius: 6px;
 
-	.ljoevbzj {
-		display: block;
-		padding: 16px;
-		margin-bottom: 8px;
-		border: solid 1px var(--divider);
-		border-radius: 6px;
-
-		&:hover {
-			border: solid 1px var(--accent);
-			text-decoration: none;
-		}
-
-		> .name {
-			font-weight: bold;
-		}
+	&:hover {
+		border: solid 1px var(--accent);
+		text-decoration: none;
 	}
 }
+
+.name {
+	font-weight: bold;
+}
 </style>
diff --git a/packages/frontend/src/pages/my-lists/index.vue b/packages/frontend/src/pages/my-lists/index.vue
index cee241c48..0f59ca0b3 100644
--- a/packages/frontend/src/pages/my-lists/index.vue
+++ b/packages/frontend/src/pages/my-lists/index.vue
@@ -3,38 +3,43 @@
 	<template #header><MkPageHeader :actions="headerActions" :tabs="headerTabs"/></template>
 	<MkSpacer :contentMax="700">
 		<div class="_gaps">
+			<div v-if="items.length === 0" class="empty">
+				<div class="_fullinfo">
+					<img :src="infoImageUrl" class="_ghost"/>
+					<div>{{ i18n.ts.nothing }}</div>
+				</div>
+			</div>
+
 			<MkButton primary rounded style="margin: 0 auto;" @click="create"><i class="ti ti-plus"></i> {{ i18n.ts.createList }}</MkButton>
 
-			<MkPagination v-slot="{items}" ref="pagingComponent" :pagination="pagination">
-				<div class="_gaps">
-					<MkA v-for="list in items" :key="list.id" class="_panel" :class="$style.list" :to="`/my/lists/${ list.id }`">
-						<div style="margin-bottom: 4px;">{{ list.name }}</div>
-						<MkAvatars :userIds="list.userIds"/>
-					</MkA>
-				</div>
-			</MkPagination>
+			<div v-if="items.length > 0" class="_gaps">
+				<MkA v-for="list in items" :key="list.id" class="_panel" :class="$style.list" :to="`/my/lists/${ list.id }`">
+					<div style="margin-bottom: 4px;">{{ list.name }}</div>
+					<MkAvatars :userIds="list.userIds" :limit="10"/>
+				</MkA>
+			</div>
 		</div>
 	</MkSpacer>
 </MkStickyContainer>
 </template>
 
 <script lang="ts" setup>
-import { } from 'vue';
-import MkPagination from '@/components/MkPagination.vue';
+import { onActivated } from 'vue';
 import MkButton from '@/components/MkButton.vue';
 import MkAvatars from '@/components/MkAvatars.vue';
 import * as os from '@/os';
 import { i18n } from '@/i18n';
 import { definePageMetadata } from '@/scripts/page-metadata';
 import { userListsCache } from '@/cache';
+import { infoImageUrl } from '@/instance';
 
-const pagingComponent = $shallowRef<InstanceType<typeof MkPagination>>();
+const items = $computed(() => userListsCache.value.value ?? []);
 
-const pagination = {
-	endpoint: 'users/lists/list' as const,
-	noPaging: true,
-	limit: 10,
-};
+function fetch() {
+	userListsCache.fetch(() => os.api('users/lists/list'));
+}
+
+fetch();
 
 async function create() {
 	const { canceled, result: name } = await os.inputText({
@@ -43,10 +48,18 @@ async function create() {
 	if (canceled) return;
 	await os.apiWithDialog('users/lists/create', { name: name });
 	userListsCache.delete();
-	pagingComponent.reload();
+	fetch();
 }
 
-const headerActions = $computed(() => []);
+const headerActions = $computed(() => [{
+	asFullButton: true,
+	icon: 'ti ti-refresh',
+	text: i18n.ts.reload,
+	handler: () => {
+		userListsCache.delete();
+		fetch();
+	},
+}]);
 
 const headerTabs = $computed(() => []);
 
@@ -58,6 +71,10 @@ definePageMetadata({
 		handler: create,
 	},
 });
+
+onActivated(() => {
+	fetch();
+});
 </script>
 
 <style lang="scss" module>
diff --git a/packages/frontend/src/pages/settings/index.vue b/packages/frontend/src/pages/settings/index.vue
index b4f056d8a..d53519e0d 100644
--- a/packages/frontend/src/pages/settings/index.vue
+++ b/packages/frontend/src/pages/settings/index.vue
@@ -166,7 +166,7 @@ const menuDef = computed(() => [{
 		active: currentPage?.route.name === 'import-export',
 	}, {
 		icon: 'ti ti-plane',
-		text: `${i18n.ts.accountMigration} (${i18n.ts.experimental})`,
+		text: `${i18n.ts.accountMigration}`,
 		to: '/settings/migration',
 		active: currentPage?.route.name === 'migration',
 	}, {
diff --git a/packages/frontend/src/pages/settings/migration.vue b/packages/frontend/src/pages/settings/migration.vue
index 102bc6852..38e0d0abb 100644
--- a/packages/frontend/src/pages/settings/migration.vue
+++ b/packages/frontend/src/pages/settings/migration.vue
@@ -1,8 +1,5 @@
 <template>
 <div class="_gaps_m">
-	<FormInfo warn>
-		{{ i18n.ts.thisIsExperimentalFeature }}
-	</FormInfo>
 	<MkFolder :defaultOpen="true">
 		<template #icon><i class="ti ti-plane-arrival"></i></template>
 		<template #label>{{ i18n.ts._accountMigration.moveFrom }}</template>
diff --git a/packages/frontend/src/scripts/cache.ts b/packages/frontend/src/scripts/cache.ts
index 858e5f03b..a61d85835 100644
--- a/packages/frontend/src/scripts/cache.ts
+++ b/packages/frontend/src/scripts/cache.ts
@@ -1,7 +1,8 @@
+import { ref } from "vue";
 
 export class Cache<T> {
 	private cachedAt: number | null = null;
-	private value: T | undefined;
+	public value = ref<T | undefined>();
 	private lifetime: number;
 
 	constructor(lifetime: Cache<never>['lifetime']) {
@@ -10,21 +11,20 @@ export class Cache<T> {
 
 	public set(value: T): void {
 		this.cachedAt = Date.now();
-		this.value = value;
+		this.value.value = value;
 	}
 
-	public get(): T | undefined {
+	private get(): T | undefined {
 		if (this.cachedAt == null) return undefined;
 		if ((Date.now() - this.cachedAt) > this.lifetime) {
-			this.value = undefined;
+			this.value.value = undefined;
 			this.cachedAt = null;
 			return undefined;
 		}
-		return this.value;
+		return this.value.value;
 	}
 
 	public delete() {
-		this.value = undefined;
 		this.cachedAt = null;
 	}
 
diff --git a/packages/frontend/src/scripts/get-user-menu.ts b/packages/frontend/src/scripts/get-user-menu.ts
index bdcd1aabd..1c93d58b4 100644
--- a/packages/frontend/src/scripts/get-user-menu.ts
+++ b/packages/frontend/src/scripts/get-user-menu.ts
@@ -1,3 +1,4 @@
+import { toUnicode } from 'punycode';
 import { defineAsyncComponent } from 'vue';
 import * as misskey from 'misskey-js';
 import { i18n } from '@/i18n';
@@ -8,8 +9,7 @@ import { defaultStore, userActions } from '@/store';
 import { $i, iAmModerator } from '@/account';
 import { mainRouter } from '@/router';
 import { Router } from '@/nirax';
-import { rolesCache, userListsCache } from '@/cache';
-import { toUnicode } from 'punycode';
+import { antennasCache, rolesCache, userListsCache } from '@/cache';
 
 export function getUserMenu(user: misskey.entities.UserDetailed, router: Router = mainRouter) {
 	const meId = $i ? $i.id : null;
@@ -166,11 +166,39 @@ export function getUserMenu(user: misskey.entities.UserDetailed, router: Router
 
 			return lists.map(list => ({
 				text: list.name,
-				action: () => {
-					os.apiWithDialog('users/lists/push', {
+				action: async () => {
+					await os.apiWithDialog('users/lists/push', {
 						listId: list.id,
 						userId: user.id,
 					});
+					userListsCache.delete();
+				},
+			}));
+		},
+	}, {
+		type: 'parent',
+		icon: 'ti ti-antenna',
+		text: i18n.ts.addToAntenna,
+		children: async () => {
+			const antennas = await antennasCache.fetch(() => os.api('antennas/list'));
+			const canonical = user.host === null ? `@${user.username}` : `@${user.username}@${toUnicode(user.host)}`;
+			return antennas.filter((a) => a.src === 'users').map(antenna => ({
+				text: antenna.name,
+				action: async () => {
+					await os.apiWithDialog('antennas/update', {
+						antennaId: antenna.id,
+						name: antenna.name,
+						keywords: antenna.keywords,
+						excludeKeywords: antenna.excludeKeywords,
+						src: antenna.src,
+						userListId: antenna.userListId,
+						users: [...antenna.users, canonical],
+						caseSensitive: antenna.caseSensitive,
+						withReplies: antenna.withReplies,
+						withFile: antenna.withFile,
+						notify: antenna.notify,
+					});
+					antennasCache.delete();
 				},
 			}));
 		},
diff --git a/packages/sw/src/sw.ts b/packages/sw/src/sw.ts
index 2783f2bfb..1f085c739 100644
--- a/packages/sw/src/sw.ts
+++ b/packages/sw/src/sw.ts
@@ -21,6 +21,10 @@ globalThis.addEventListener('activate', ev => {
 	);
 });
 
+function offlineContentHTML(): string {
+	return `<!doctype html>Offline. Service Worker @${_VERSION_} <button onclick="location.reload()">reload</button>`
+}
+
 globalThis.addEventListener('fetch', ev => {
 	let isHTMLRequest = false;
 	if (ev.request.headers.get('sec-fetch-dest') === 'document') {
@@ -34,7 +38,14 @@ globalThis.addEventListener('fetch', ev => {
 	if (!isHTMLRequest) return;
 	ev.respondWith(
 		fetch(ev.request)
-			.catch(() => new Response(`Offline. Service Worker @${_VERSION_}`, { status: 200 })),
+			.catch(() => {
+				return new Response(offlineContentHTML(), {
+					status: 200,
+					headers: {
+						'content-type': 'text/html',
+					},
+				});
+			}),
 	);
 });