diff --git a/packages/backend/src/core/entities/NoteReactionEntityService.ts b/packages/backend/src/core/entities/NoteReactionEntityService.ts
index 46ec13704c..54ce4d472a 100644
--- a/packages/backend/src/core/entities/NoteReactionEntityService.ts
+++ b/packages/backend/src/core/entities/NoteReactionEntityService.ts
@@ -49,15 +49,12 @@ export class NoteReactionEntityService implements OnModuleInit {
 	public async pack(
 		src: MiNoteReaction['id'] | MiNoteReaction,
 		me?: { id: MiUser['id'] } | null | undefined,
-		options?: {
-			withNote: boolean;
-		},
+		options?: object,
 		hints?: {
 			packedUser?: Packed<'UserLite'>
 		},
 	): Promise<Packed<'NoteReaction'>> {
 		const opts = Object.assign({
-			withNote: false,
 		}, options);
 
 		const reaction = typeof src === 'object' ? src : await this.noteReactionsRepository.findOneByOrFail({ id: src });
@@ -67,9 +64,6 @@ export class NoteReactionEntityService implements OnModuleInit {
 			createdAt: this.idService.parse(reaction.id).date.toISOString(),
 			user: hints?.packedUser ?? await this.userEntityService.pack(reaction.user ?? reaction.userId, me),
 			type: this.reactionService.convertLegacyReaction(reaction.reaction),
-			...(opts.withNote ? {
-				note: await this.noteEntityService.pack(reaction.note ?? reaction.noteId, me),
-			} : {}),
 		};
 	}
 
@@ -77,16 +71,50 @@ export class NoteReactionEntityService implements OnModuleInit {
 	public async packMany(
 		reactions: MiNoteReaction[],
 		me?: { id: MiUser['id'] } | null | undefined,
-		options?: {
-			withNote: boolean;
-		},
+		options?: object,
 	): Promise<Packed<'NoteReaction'>[]> {
 		const opts = Object.assign({
-			withNote: false,
 		}, options);
 		const _users = reactions.map(({ user, userId }) => user ?? userId);
 		const _userMap = await this.userEntityService.packMany(_users, me)
 			.then(users => new Map(users.map(u => [u.id, u])));
 		return Promise.all(reactions.map(reaction => this.pack(reaction, me, opts, { packedUser: _userMap.get(reaction.userId) })));
 	}
+
+	@bindThis
+	public async packWithNote(
+		src: MiNoteReaction['id'] | MiNoteReaction,
+		me?: { id: MiUser['id'] } | null | undefined,
+		options?: object,
+		hints?: {
+			packedUser?: Packed<'UserLite'>
+		},
+	): Promise<Packed<'NoteReactionWithNote'>> {
+		const opts = Object.assign({
+		}, options);
+
+		const reaction = typeof src === 'object' ? src : await this.noteReactionsRepository.findOneByOrFail({ id: src });
+
+		return {
+			id: reaction.id,
+			createdAt: this.idService.parse(reaction.id).date.toISOString(),
+			user: hints?.packedUser ?? await this.userEntityService.pack(reaction.user ?? reaction.userId, me),
+			type: this.reactionService.convertLegacyReaction(reaction.reaction),
+			note: await this.noteEntityService.pack(reaction.note ?? reaction.noteId, me),
+		};
+	}
+
+	@bindThis
+	public async packManyWithNote(
+		reactions: MiNoteReaction[],
+		me?: { id: MiUser['id'] } | null | undefined,
+		options?: object,
+	): Promise<Packed<'NoteReactionWithNote'>[]> {
+		const opts = Object.assign({
+		}, options);
+		const _users = reactions.map(({ user, userId }) => user ?? userId);
+		const _userMap = await this.userEntityService.packMany(_users, me)
+			.then(users => new Map(users.map(u => [u.id, u])));
+		return Promise.all(reactions.map(reaction => this.packWithNote(reaction, me, opts, { packedUser: _userMap.get(reaction.userId) })));
+	}
 }
diff --git a/packages/backend/src/misc/json-schema.ts b/packages/backend/src/misc/json-schema.ts
index ed47edff9b..dca92e1037 100644
--- a/packages/backend/src/misc/json-schema.ts
+++ b/packages/backend/src/misc/json-schema.ts
@@ -22,7 +22,7 @@ import { packedFollowingSchema } from '@/models/json-schema/following.js';
 import { packedMutingSchema } from '@/models/json-schema/muting.js';
 import { packedRenoteMutingSchema } from '@/models/json-schema/renote-muting.js';
 import { packedBlockingSchema } from '@/models/json-schema/blocking.js';
-import { packedNoteReactionSchema } from '@/models/json-schema/note-reaction.js';
+import { packedNoteReactionSchema, packedNoteReactionWithNoteSchema } from '@/models/json-schema/note-reaction.js';
 import { packedHashtagSchema } from '@/models/json-schema/hashtag.js';
 import { packedInviteCodeSchema } from '@/models/json-schema/invite-code.js';
 import { packedPageBlockSchema, packedPageSchema } from '@/models/json-schema/page.js';
@@ -92,6 +92,7 @@ export const refs = {
 	Note: packedNoteSchema,
 	NoteDraft: packedNoteDraftSchema,
 	NoteReaction: packedNoteReactionSchema,
+	NoteReactionWithNote: packedNoteReactionWithNoteSchema,
 	NoteFavorite: packedNoteFavoriteSchema,
 	Notification: packedNotificationSchema,
 	DriveFile: packedDriveFileSchema,
diff --git a/packages/backend/src/models/json-schema/note-reaction.ts b/packages/backend/src/models/json-schema/note-reaction.ts
index 95658ace1f..04c9f34232 100644
--- a/packages/backend/src/models/json-schema/note-reaction.ts
+++ b/packages/backend/src/models/json-schema/note-reaction.ts
@@ -10,7 +10,6 @@ export const packedNoteReactionSchema = {
 			type: 'string',
 			optional: false, nullable: false,
 			format: 'id',
-			example: 'xxxxxxxxxx',
 		},
 		createdAt: {
 			type: 'string',
@@ -28,3 +27,33 @@ export const packedNoteReactionSchema = {
 		},
 	},
 } as const;
+
+export const packedNoteReactionWithNoteSchema = {
+	type: 'object',
+	properties: {
+		id: {
+			type: 'string',
+			optional: false, nullable: false,
+			format: 'id',
+		},
+		createdAt: {
+			type: 'string',
+			optional: false, nullable: false,
+			format: 'date-time',
+		},
+		user: {
+			type: 'object',
+			optional: false, nullable: false,
+			ref: 'UserLite',
+		},
+		type: {
+			type: 'string',
+			optional: false, nullable: false,
+		},
+		note: {
+			type: 'object',
+			optional: false, nullable: false,
+			ref: 'Note',
+		},
+	},
+} as const;
diff --git a/packages/backend/src/server/api/endpoints/admin/announcements/list.ts b/packages/backend/src/server/api/endpoints/admin/announcements/list.ts
index 81a788de2b..804bd5d9b9 100644
--- a/packages/backend/src/server/api/endpoints/admin/announcements/list.ts
+++ b/packages/backend/src/server/api/endpoints/admin/announcements/list.ts
@@ -49,6 +49,34 @@ export const meta = {
 					type: 'string',
 					optional: false, nullable: false,
 				},
+				icon: {
+					type: 'string',
+					optional: false, nullable: true,
+				},
+				display: {
+					type: 'string',
+					optional: false, nullable: false,
+				},
+				isActive: {
+					type: 'boolean',
+					optional: false, nullable: false,
+				},
+				forExistingUsers: {
+					type: 'boolean',
+					optional: false, nullable: false,
+				},
+				silence: {
+					type: 'boolean',
+					optional: false, nullable: false,
+				},
+				needConfirmationToRead: {
+					type: 'boolean',
+					optional: false, nullable: false,
+				},
+				userId: {
+					type: 'string',
+					optional: false, nullable: true,
+				},
 				imageUrl: {
 					type: 'string',
 					optional: false, nullable: true,
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 8756801fe4..ed5952d4c5 100644
--- a/packages/backend/src/server/api/endpoints/users/lists/show.ts
+++ b/packages/backend/src/server/api/endpoints/users/lists/show.ts
@@ -23,6 +23,16 @@ export const meta = {
 		type: 'object',
 		optional: false, nullable: false,
 		ref: 'UserList',
+		properties: {
+			likedCount: {
+				type: 'number',
+				optional: true, nullable: false,
+			},
+			isLiked: {
+				type: 'boolean',
+				optional: true, nullable: false,
+			},
+		},
 	},
 
 	errors: {
diff --git a/packages/backend/src/server/api/endpoints/users/reactions.ts b/packages/backend/src/server/api/endpoints/users/reactions.ts
index d6f1ecd8ed..d84a191f7a 100644
--- a/packages/backend/src/server/api/endpoints/users/reactions.ts
+++ b/packages/backend/src/server/api/endpoints/users/reactions.ts
@@ -28,7 +28,7 @@ export const meta = {
 		items: {
 			type: 'object',
 			optional: false, nullable: false,
-			ref: 'NoteReaction',
+			ref: 'NoteReactionWithNote',
 		},
 	},
 
@@ -120,7 +120,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				return true;
 			});
 
-			return await this.noteReactionEntityService.packMany(reactions, me, { withNote: true });
+			return await this.noteReactionEntityService.packManyWithNote(reactions, me);
 		});
 	}
 }
diff --git a/packages/frontend/src/boot/main-boot.ts b/packages/frontend/src/boot/main-boot.ts
index 6ae8379801..18817d3f79 100644
--- a/packages/frontend/src/boot/main-boot.ts
+++ b/packages/frontend/src/boot/main-boot.ts
@@ -368,11 +368,6 @@ export async function mainBoot() {
 				});
 			});
 
-			main.on('unreadAntenna', () => {
-				updateCurrentAccountPartial({ hasUnreadAntenna: true });
-				sound.playMisskeySfx('antenna');
-			});
-
 			main.on('newChatMessage', () => {
 				updateCurrentAccountPartial({ hasUnreadChatMessages: true });
 				sound.playMisskeySfx('chatMessage');
diff --git a/packages/frontend/src/components/MkAchievements.vue b/packages/frontend/src/components/MkAchievements.vue
index 3b7b59b4d3..bf39c1e983 100644
--- a/packages/frontend/src/components/MkAchievements.vue
+++ b/packages/frontend/src/components/MkAchievements.vue
@@ -16,7 +16,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 						[$style.iconFrame_platinum]: ACHIEVEMENT_BADGES[achievement.name].frame === 'platinum',
 					}]"
 				>
-					<div :class="[$style.iconInner]" :style="{ background: ACHIEVEMENT_BADGES[achievement.name].bg }">
+					<div :class="[$style.iconInner]" :style="{ background: ACHIEVEMENT_BADGES[achievement.name].bg ?? '' }">
 						<img :class="$style.iconImg" :src="ACHIEVEMENT_BADGES[achievement.name].img">
 					</div>
 				</div>
diff --git a/packages/frontend/src/components/MkChart.vue b/packages/frontend/src/components/MkChart.vue
index 4d67bba70d..c54081ad42 100644
--- a/packages/frontend/src/components/MkChart.vue
+++ b/packages/frontend/src/components/MkChart.vue
@@ -589,7 +589,10 @@ const fetchDriveFilesChart = async (): Promise<typeof chartData> => {
 };
 
 const fetchInstanceRequestsChart = async (): Promise<typeof chartData> => {
-	const raw = await misskeyApiGet('charts/instance', { host: props.args?.host, limit: props.limit, span: props.span });
+	const host = props.args?.host;
+	if (host == null) return { series: [] };
+
+	const raw = await misskeyApiGet('charts/instance', { host: host, limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'In',
@@ -611,7 +614,10 @@ const fetchInstanceRequestsChart = async (): Promise<typeof chartData> => {
 };
 
 const fetchInstanceUsersChart = async (total: boolean): Promise<typeof chartData> => {
-	const raw = await misskeyApiGet('charts/instance', { host: props.args?.host, limit: props.limit, span: props.span });
+	const host = props.args?.host;
+	if (host == null) return { series: [] };
+
+	const raw = await misskeyApiGet('charts/instance', { host: host, limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Users',
@@ -626,7 +632,10 @@ const fetchInstanceUsersChart = async (total: boolean): Promise<typeof chartData
 };
 
 const fetchInstanceNotesChart = async (total: boolean): Promise<typeof chartData> => {
-	const raw = await misskeyApiGet('charts/instance', { host: props.args?.host, limit: props.limit, span: props.span });
+	const host = props.args?.host;
+	if (host == null) return { series: [] };
+
+	const raw = await misskeyApiGet('charts/instance', { host: host, limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Notes',
@@ -641,7 +650,10 @@ const fetchInstanceNotesChart = async (total: boolean): Promise<typeof chartData
 };
 
 const fetchInstanceFfChart = async (total: boolean): Promise<typeof chartData> => {
-	const raw = await misskeyApiGet('charts/instance', { host: props.args?.host, limit: props.limit, span: props.span });
+	const host = props.args?.host;
+	if (host == null) return { series: [] };
+
+	const raw = await misskeyApiGet('charts/instance', { host: host, limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Following',
@@ -664,7 +676,10 @@ const fetchInstanceFfChart = async (total: boolean): Promise<typeof chartData> =
 };
 
 const fetchInstanceDriveUsageChart = async (total: boolean): Promise<typeof chartData> => {
-	const raw = await misskeyApiGet('charts/instance', { host: props.args?.host, limit: props.limit, span: props.span });
+	const host = props.args?.host;
+	if (host == null) return { series: [] };
+
+	const raw = await misskeyApiGet('charts/instance', { host: host, limit: props.limit, span: props.span });
 	return {
 		bytes: true,
 		series: [{
@@ -680,7 +695,10 @@ const fetchInstanceDriveUsageChart = async (total: boolean): Promise<typeof char
 };
 
 const fetchInstanceDriveFilesChart = async (total: boolean): Promise<typeof chartData> => {
-	const raw = await misskeyApiGet('charts/instance', { host: props.args?.host, limit: props.limit, span: props.span });
+	const host = props.args?.host;
+	if (host == null) return { series: [] };
+
+	const raw = await misskeyApiGet('charts/instance', { host: host, limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Drive files',
@@ -695,7 +713,10 @@ const fetchInstanceDriveFilesChart = async (total: boolean): Promise<typeof char
 };
 
 const fetchPerUserNotesChart = async (): Promise<typeof chartData> => {
-	const raw = await misskeyApiGet('charts/user/notes', { userId: props.args?.user?.id, limit: props.limit, span: props.span });
+	const userId = props.args?.user?.id;
+	if (userId == null) return { series: [] };
+
+	const raw = await misskeyApiGet('charts/user/notes', { userId: userId, limit: props.limit, span: props.span });
 	return {
 		series: [...(props.args?.withoutAll ? [] : [{
 			name: 'All',
@@ -727,7 +748,10 @@ const fetchPerUserNotesChart = async (): Promise<typeof chartData> => {
 };
 
 const fetchPerUserPvChart = async (): Promise<typeof chartData> => {
-	const raw = await misskeyApiGet('charts/user/pv', { userId: props.args?.user?.id, limit: props.limit, span: props.span });
+	const userId = props.args?.user?.id;
+	if (userId == null) return { series: [] };
+
+	const raw = await misskeyApiGet('charts/user/pv', { userId: userId, limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Unique PV (user)',
@@ -754,7 +778,10 @@ const fetchPerUserPvChart = async (): Promise<typeof chartData> => {
 };
 
 const fetchPerUserFollowingChart = async (): Promise<typeof chartData> => {
-	const raw = await misskeyApiGet('charts/user/following', { userId: props.args?.user?.id, limit: props.limit, span: props.span });
+	const userId = props.args?.user?.id;
+	if (userId == null) return { series: [] };
+
+	const raw = await misskeyApiGet('charts/user/following', { userId: userId, limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Local',
@@ -769,7 +796,10 @@ const fetchPerUserFollowingChart = async (): Promise<typeof chartData> => {
 };
 
 const fetchPerUserFollowersChart = async (): Promise<typeof chartData> => {
-	const raw = await misskeyApiGet('charts/user/following', { userId: props.args?.user?.id, limit: props.limit, span: props.span });
+	const userId = props.args?.user?.id;
+	if (userId == null) return { series: [] };
+
+	const raw = await misskeyApiGet('charts/user/following', { userId: userId, limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Local',
@@ -784,7 +814,10 @@ const fetchPerUserFollowersChart = async (): Promise<typeof chartData> => {
 };
 
 const fetchPerUserDriveChart = async (): Promise<typeof chartData> => {
-	const raw = await misskeyApiGet('charts/user/drive', { userId: props.args?.user?.id, limit: props.limit, span: props.span });
+	const userId = props.args?.user?.id;
+	if (userId == null) return { series: [] };
+
+	const raw = await misskeyApiGet('charts/user/drive', { userId: userId, limit: props.limit, span: props.span });
 	return {
 		bytes: true,
 		series: [{
diff --git a/packages/frontend/src/components/MkCropperDialog.vue b/packages/frontend/src/components/MkCropperDialog.vue
index 7f592fba79..6c07eac47a 100644
--- a/packages/frontend/src/components/MkCropperDialog.vue
+++ b/packages/frontend/src/components/MkCropperDialog.vue
@@ -29,7 +29,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 
 <script lang="ts" setup>
-import { onMounted, useTemplateRef, ref } from 'vue';
+import { onMounted, useTemplateRef, ref, onUnmounted } from 'vue';
 import * as Misskey from 'misskey-js';
 import Cropper from 'cropperjs';
 import tinycolor from 'tinycolor2';
@@ -55,17 +55,19 @@ const imgEl = useTemplateRef('imgEl');
 let cropper: Cropper | null = null;
 const loading = ref(true);
 
-const ok = async () => {
-	const promise = new Promise<Misskey.entities.DriveFile>(async (res) => {
-		const croppedImage = await cropper?.getCropperImage();
-		const croppedSection = await cropper?.getCropperSelection();
+async function ok() {
+	const promise = new Promise<Blob>(async (res) => {
+		if (cropper == null) throw new Error('Cropper is not initialized');
+
+		const croppedImage = await cropper.getCropperImage()!;
+		const croppedSection = await cropper.getCropperSelection()!;
 
 		// 拡大率を計算し、(ほぼ)元の大きさに戻す
 		const zoomedRate = croppedImage.getBoundingClientRect().width / croppedImage.clientWidth;
 		const widthToRender = croppedSection.getBoundingClientRect().width / zoomedRate;
 
-		const croppedCanvas = await croppedSection?.$toCanvas({ width: widthToRender });
-		croppedCanvas?.toBlob(blob => {
+		const croppedCanvas = await croppedSection.$toCanvas({ width: widthToRender });
+		croppedCanvas.toBlob(blob => {
 			if (!blob) return;
 			res(blob);
 		});
@@ -74,25 +76,27 @@ const ok = async () => {
 	const f = await promise;
 
 	emit('ok', f);
-	dialogEl.value!.close();
-};
+	if (dialogEl.value != null) dialogEl.value.close();
+}
 
-const cancel = () => {
+function cancel() {
 	emit('cancel');
-	dialogEl.value!.close();
-};
+	if (dialogEl.value != null) dialogEl.value.close();
+}
 
-const onImageLoad = () => {
+function onImageLoad() {
 	loading.value = false;
 
 	if (cropper) {
 		cropper.getCropperImage()!.$center('contain');
 		cropper.getCropperSelection()!.$center();
 	}
-};
+}
 
 onMounted(() => {
-	cropper = new Cropper(imgEl.value!, {
+	if (imgEl.value == null) return; // TSを黙らすため
+
+	cropper = new Cropper(imgEl.value, {
 	});
 
 	const computedStyle = getComputedStyle(window.document.documentElement);
@@ -104,16 +108,22 @@ onMounted(() => {
 	selection.outlined = true;
 
 	window.setTimeout(() => {
-		cropper!.getCropperImage()!.$center('contain');
+		if (cropper == null) return;
+		cropper.getCropperImage()!.$center('contain');
 		selection.$center();
 	}, 100);
 
 	// モーダルオープンアニメーションが終わったあとで再度調整
 	window.setTimeout(() => {
-		cropper!.getCropperImage()!.$center('contain');
+		if (cropper == null) return;
+		cropper.getCropperImage()!.$center('contain');
 		selection.$center();
 	}, 500);
 });
+
+onUnmounted(() => {
+	URL.revokeObjectURL(imgUrl);
+});
 </script>
 
 <style lang="scss" scoped>
diff --git a/packages/frontend/src/components/MkEmojiPicker.vue b/packages/frontend/src/components/MkEmojiPicker.vue
index df05bcc94c..6904c417ce 100644
--- a/packages/frontend/src/components/MkEmojiPicker.vue
+++ b/packages/frontend/src/components/MkEmojiPicker.vue
@@ -152,7 +152,7 @@ const props = withDefaults(defineProps<{
 	asDrawer?: boolean;
 	asWindow?: boolean;
 	asReactionPicker?: boolean; // 今は使われてないが将来的に使いそう
-	targetNote?: Misskey.entities.Note;
+	targetNote?: Misskey.entities.Note | null;
 }>(), {
 	showPinned: true,
 });
diff --git a/packages/frontend/src/components/MkEmojiPickerDialog.vue b/packages/frontend/src/components/MkEmojiPickerDialog.vue
index 1627dc8760..0ff4e8f38d 100644
--- a/packages/frontend/src/components/MkEmojiPickerDialog.vue
+++ b/packages/frontend/src/components/MkEmojiPickerDialog.vue
@@ -44,11 +44,11 @@ import { prefer } from '@/preferences.js';
 
 const props = withDefaults(defineProps<{
 	manualShowing?: boolean | null;
-	anchorElement?: HTMLElement;
+	anchorElement?: HTMLElement | null;
 	showPinned?: boolean;
 	pinnedEmojis?: string[],
 	asReactionPicker?: boolean;
-	targetNote?: Misskey.entities.Note;
+	targetNote?: Misskey.entities.Note | null;
 	choseAndClose?: boolean;
 }>(), {
 	manualShowing: null,
diff --git a/packages/frontend/src/components/MkModal.vue b/packages/frontend/src/components/MkModal.vue
index 06686ddfc0..660d5a26be 100644
--- a/packages/frontend/src/components/MkModal.vue
+++ b/packages/frontend/src/components/MkModal.vue
@@ -91,7 +91,7 @@ const emit = defineEmits<{
 	(ev: 'opened'): void;
 	(ev: 'click'): void;
 	(ev: 'esc'): void;
-	(ev: 'close'): void;
+	(ev: 'close'): void; // TODO: (refactor) closing に改名する
 	(ev: 'closed'): void;
 }>();
 
@@ -148,7 +148,6 @@ function close(opts: { useSendAnimation?: boolean } = {}) {
 		useSendAnime.value = true;
 	}
 
-	// eslint-disable-next-line vue/no-mutating-props
 	if (props.anchorElement) props.anchorElement.style.pointerEvents = 'auto';
 	showing.value = false;
 	emit('close');
@@ -319,7 +318,6 @@ const alignObserver = new ResizeObserver((entries, observer) => {
 onMounted(() => {
 	watch(() => props.anchorElement, async () => {
 		if (props.anchorElement) {
-			// eslint-disable-next-line vue/no-mutating-props
 			props.anchorElement.style.pointerEvents = 'none';
 		}
 		fixed.value = (type.value === 'drawer') || (getFixedContainer(props.anchorElement) != null);
diff --git a/packages/frontend/src/components/MkReactionsViewer.reaction.vue b/packages/frontend/src/components/MkReactionsViewer.reaction.vue
index e0490404ac..d96f0e2420 100644
--- a/packages/frontend/src/components/MkReactionsViewer.reaction.vue
+++ b/packages/frontend/src/components/MkReactionsViewer.reaction.vue
@@ -58,18 +58,22 @@ const emit = defineEmits<{
 const buttonEl = useTemplateRef('buttonEl');
 
 const emojiName = computed(() => props.reaction.replace(/:/g, '').replace(/@\./, ''));
-const emoji = computed(() => customEmojisMap.get(emojiName.value) ?? getUnicodeEmoji(props.reaction));
 
 const canToggle = computed(() => {
+	const emoji = customEmojisMap.get(emojiName.value) ?? getUnicodeEmoji(props.reaction);
+
 	// TODO
-	//return !props.reaction.match(/@\w/) && $i && emoji.value && checkReactionPermissions($i, props.note, emoji.value);
-	return !props.reaction.match(/@\w/) && $i && emoji.value;
+	//return !props.reaction.match(/@\w/) && $i && emoji && checkReactionPermissions($i, props.note, emoji);
+	return !props.reaction.match(/@\w/) && $i && emoji;
 });
 const canGetInfo = computed(() => !props.reaction.match(/@\w/) && props.reaction.includes(':'));
 const isLocalCustomEmoji = props.reaction[0] === ':' && props.reaction.includes('@.');
 
 async function toggleReaction() {
 	if (!canToggle.value) return;
+	if ($i == null) return;
+
+	const me = $i;
 
 	const oldReaction = props.myReaction;
 	if (oldReaction) {
@@ -93,7 +97,7 @@ async function toggleReaction() {
 			noteId: props.noteId,
 		}).then(() => {
 			noteEvents.emit(`unreacted:${props.noteId}`, {
-				userId: $i!.id,
+				userId: me.id,
 				reaction: oldReaction,
 			});
 			if (oldReaction !== props.reaction) {
@@ -101,10 +105,12 @@ async function toggleReaction() {
 					noteId: props.noteId,
 					reaction: props.reaction,
 				}).then(() => {
+					const emoji = customEmojisMap.get(emojiName.value);
+					if (emoji == null) return;
 					noteEvents.emit(`reacted:${props.noteId}`, {
-						userId: $i!.id,
+						userId: me.id,
 						reaction: props.reaction,
-						emoji: emoji.value,
+						emoji: emoji,
 					});
 				});
 			}
@@ -131,10 +137,13 @@ async function toggleReaction() {
 			noteId: props.noteId,
 			reaction: props.reaction,
 		}).then(() => {
+			const emoji = customEmojisMap.get(emojiName.value);
+			if (emoji == null) return;
+
 			noteEvents.emit(`reacted:${props.noteId}`, {
-				userId: $i!.id,
+				userId: me.id,
 				reaction: props.reaction,
-				emoji: emoji.value,
+				emoji: emoji,
 			});
 		});
 		// TODO: 上位コンポーネントでやる
@@ -217,6 +226,8 @@ onMounted(() => {
 
 if (!mock) {
 	useTooltip(buttonEl, async (showing) => {
+		if (buttonEl.value == null) return;
+
 		const reactions = await misskeyApiGet('notes/reactions', {
 			noteId: props.noteId,
 			type: props.reaction,
diff --git a/packages/frontend/src/components/global/MkPageHeader.tabs.vue b/packages/frontend/src/components/global/MkPageHeader.tabs.vue
index f2173b2e22..ae051eaf2c 100644
--- a/packages/frontend/src/components/global/MkPageHeader.tabs.vue
+++ b/packages/frontend/src/components/global/MkPageHeader.tabs.vue
@@ -59,7 +59,7 @@ import { prefer } from '@/preferences.js';
 const props = withDefaults(defineProps<{
 	tabs?: Tab[];
 	tab?: string;
-	rootEl?: HTMLElement;
+	rootEl?: HTMLElement | null;
 }>(), {
 	tabs: () => ([] as Tab[]),
 });
diff --git a/packages/frontend/src/pages/admin-user.vue b/packages/frontend/src/pages/admin-user.vue
index 437bf22363..38e3c7a11b 100644
--- a/packages/frontend/src/pages/admin-user.vue
+++ b/packages/frontend/src/pages/admin-user.vue
@@ -143,8 +143,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 					<button v-else class="_button" :class="$style.roleUnassign" disabled><i class="ti ti-ban"></i></button>
 				</div>
 				<div v-if="expandedRoleIds.includes(role.id)" :class="$style.roleItemSub">
-					<div>Assigned: <MkTime :time="info.roleAssigns.find(a => a.roleId === role.id).createdAt" mode="detail"/></div>
-					<div v-if="info.roleAssigns.find(a => a.roleId === role.id).expiresAt">Period: {{ new Date(info.roleAssigns.find(a => a.roleId === role.id).expiresAt).toLocaleString() }}</div>
+					<div>Assigned: <MkTime :time="info.roleAssigns.find(a => a.roleId === role.id)!.createdAt" mode="detail"/></div>
+					<div v-if="info.roleAssigns.find(a => a.roleId === role.id)!.expiresAt">Period: {{ new Date(info.roleAssigns.find(a => a.roleId === role.id)!.expiresAt!).toLocaleString() }}</div>
 					<div v-else>Period: {{ i18n.ts.indefinitely }}</div>
 				</div>
 			</div>
diff --git a/packages/frontend/src/pages/drive.file.info.vue b/packages/frontend/src/pages/drive.file.info.vue
index 79c249413a..e3cc1d988e 100644
--- a/packages/frontend/src/pages/drive.file.info.vue
+++ b/packages/frontend/src/pages/drive.file.info.vue
@@ -119,7 +119,7 @@ async function _fetch_() {
 }
 
 function postThis() {
-	if (!file.value) return;
+	if (file.value == null) return;
 
 	os.post({
 		initialFiles: [file.value],
@@ -127,11 +127,13 @@ function postThis() {
 }
 
 function move() {
-	if (!file.value) return;
+	if (file.value == null) return;
+
+	const f = file.value;
 
 	selectDriveFolder(null).then(folder => {
 		misskeyApi('drive/files/update', {
-			fileId: file.value.id,
+			fileId: f.id,
 			folderId: folder[0] ? folder[0].id : null,
 		}).then(async () => {
 			await _fetch_();
@@ -140,7 +142,7 @@ function move() {
 }
 
 function toggleSensitive() {
-	if (!file.value) return;
+	if (file.value == null) return;
 
 	os.apiWithDialog('drive/files/update', {
 		fileId: file.value.id,
@@ -157,7 +159,9 @@ function toggleSensitive() {
 }
 
 function rename() {
-	if (!file.value) return;
+	if (file.value == null) return;
+
+	const f = file.value;
 
 	os.inputText({
 		title: i18n.ts.renameFile,
@@ -166,7 +170,7 @@ function rename() {
 	}).then(({ canceled, result: name }) => {
 		if (canceled) return;
 		os.apiWithDialog('drive/files/update', {
-			fileId: file.value.id,
+			fileId: f.id,
 			name: name,
 		}).then(async () => {
 			await _fetch_();
@@ -175,7 +179,9 @@ function rename() {
 }
 
 async function describe() {
-	if (!file.value) return;
+	if (file.value == null) return;
+
+	const f = file.value;
 
 	const { dispose } = await os.popupAsyncWithDialog(import('@/components/MkFileCaptionEditWindow.vue').then(x => x.default), {
 		default: file.value.comment ?? '',
@@ -183,7 +189,7 @@ async function describe() {
 	}, {
 		done: caption => {
 			os.apiWithDialog('drive/files/update', {
-				fileId: file.value.id,
+				fileId: f.id,
 				comment: caption.length === 0 ? null : caption,
 			}).then(async () => {
 				await _fetch_();
@@ -194,7 +200,7 @@ async function describe() {
 }
 
 async function deleteFile() {
-	if (!file.value) return;
+	if (file.value == null) return;
 
 	const { canceled } = await os.confirm({
 		type: 'warning',
diff --git a/packages/frontend/src/pages/explore.vue b/packages/frontend/src/pages/explore.vue
index c4f6ddc33e..6416816e6c 100644
--- a/packages/frontend/src/pages/explore.vue
+++ b/packages/frontend/src/pages/explore.vue
@@ -26,18 +26,12 @@ import { definePage } from '@/page.js';
 import { i18n } from '@/i18n.js';
 
 const props = withDefaults(defineProps<{
-	tag?: string;
 	initialTab?: string;
 }>(), {
 	initialTab: 'featured',
 });
 
 const tab = ref(props.initialTab);
-const tagsEl = useTemplateRef('tagsEl');
-
-watch(() => props.tag, () => {
-	if (tagsEl.value) tagsEl.value.toggleContent(props.tag == null);
-});
 
 const headerActions = computed(() => []);
 
diff --git a/packages/frontend/src/pages/list.vue b/packages/frontend/src/pages/list.vue
index 1261428c1c..a52b562c7f 100644
--- a/packages/frontend/src/pages/list.vue
+++ b/packages/frontend/src/pages/list.vue
@@ -103,6 +103,7 @@ definePage(() => ({
 	icon: 'ti ti-list',
 }));
 </script>
+
 <style lang="scss" module>
 .userItem {
 	display: flex;
diff --git a/packages/frontend/src/pages/note.vue b/packages/frontend/src/pages/note.vue
index 89ae3d2d83..abd2a5d8a1 100644
--- a/packages/frontend/src/pages/note.vue
+++ b/packages/frontend/src/pages/note.vue
@@ -126,7 +126,7 @@ function fetchNote() {
 		noteId: props.noteId,
 	}).then(res => {
 		note.value = res;
-		const appearNote = getAppearNote(res);
+		const appearNote = getAppearNote(res) ?? res;
 		// 古いノートは被クリップ数をカウントしていないので、2023-10-01以前のものは強制的にnotes/clipsを叩く
 		if ((appearNote.clippedCount ?? 0) > 0 || new Date(appearNote.createdAt).getTime() < new Date('2023-10-01').getTime()) {
 			misskeyApi('notes/clips', {
diff --git a/packages/frontend/src/pages/registry.value.vue b/packages/frontend/src/pages/registry.value.vue
index 5c5bbfba39..827866ae2a 100644
--- a/packages/frontend/src/pages/registry.value.vue
+++ b/packages/frontend/src/pages/registry.value.vue
@@ -62,10 +62,10 @@ const props = defineProps<{
 }>();
 
 const scope = computed(() => props.path.split('/').slice(0, -1));
-const key = computed(() => props.path.split('/').at(-1));
+const key = computed(() => props.path.split('/').at(-1)!);
 
 const value = ref<any>(null);
-const valueForEditor = ref<string | null>(null);
+const valueForEditor = ref<string>('');
 
 function fetchValue() {
 	misskeyApi('i/registry/get-detail', {
diff --git a/packages/frontend/src/pages/settings/avatar-decoration.vue b/packages/frontend/src/pages/settings/avatar-decoration.vue
index 4b8ac9a26c..d3d642f156 100644
--- a/packages/frontend/src/pages/settings/avatar-decoration.vue
+++ b/packages/frontend/src/pages/settings/avatar-decoration.vue
@@ -108,7 +108,7 @@ async function openDecoration(avatarDecoration: {
 				offsetY: payload.offsetY,
 			};
 			const update = [...$i.avatarDecorations];
-			update[index] = decoration;
+			update[index!] = decoration;
 			await os.apiWithDialog('i/update', {
 				avatarDecorations: update,
 			});
@@ -116,7 +116,7 @@ async function openDecoration(avatarDecoration: {
 		},
 		'detach': async () => {
 			const update = [...$i.avatarDecorations];
-			update.splice(index, 1);
+			update.splice(index!, 1);
 			await os.apiWithDialog('i/update', {
 				avatarDecorations: update,
 			});
diff --git a/packages/frontend/src/pages/settings/notifications.vue b/packages/frontend/src/pages/settings/notifications.vue
index 3ddfb81c33..2f2b57bdaf 100644
--- a/packages/frontend/src/pages/settings/notifications.vue
+++ b/packages/frontend/src/pages/settings/notifications.vue
@@ -43,9 +43,9 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</FormSection>
 		<FormSection>
 			<div class="_gaps_s">
-				<FormLink @click="readAllNotifications">{{ i18n.ts.markAsReadAllNotifications }}</FormLink>
-				<FormLink @click="testNotification">{{ i18n.ts._notification.sendTestNotification }}</FormLink>
-				<FormLink @click="flushNotification">{{ i18n.ts._notification.flushNotification }}</FormLink>
+				<MkButton @click="readAllNotifications">{{ i18n.ts.markAsReadAllNotifications }}</MkButton>
+				<MkButton @click="testNotification">{{ i18n.ts._notification.sendTestNotification }}</MkButton>
+				<MkButton @click="flushNotification">{{ i18n.ts._notification.flushNotification }}</MkButton>
 			</div>
 		</FormSection>
 		<FormSection>
@@ -76,6 +76,7 @@ import FormLink from '@/components/form/link.vue';
 import FormSection from '@/components/form/section.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
+import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
 import { ensureSignin } from '@/i.js';
 import { misskeyApi } from '@/utility/misskey-api.js';
@@ -96,7 +97,7 @@ const sendReadMessage = computed(() => pushRegistrationInServer.value?.sendReadM
 const userLists = await misskeyApi('users/lists/list');
 
 async function readAllNotifications() {
-	await os.apiWithDialog('notifications/mark-all-as-read');
+	await os.apiWithDialog('notifications/mark-all-as-read', {});
 }
 
 async function updateReceiveConfig(type: typeof notificationTypes[number], value: NotificationConfig) {
@@ -134,7 +135,7 @@ async function flushNotification() {
 
 	if (canceled) return;
 
-	os.apiWithDialog('notifications/flush');
+	os.apiWithDialog('notifications/flush', {});
 }
 
 const headerActions = computed(() => []);
diff --git a/packages/frontend/src/pages/settings/security.vue b/packages/frontend/src/pages/settings/security.vue
index c954b9dd5a..bc77c1f0af 100644
--- a/packages/frontend/src/pages/settings/security.vue
+++ b/packages/frontend/src/pages/settings/security.vue
@@ -80,14 +80,14 @@ async function change() {
 		type: 'password',
 		autocomplete: 'new-password',
 	});
-	if (canceled2) return;
+	if (canceled2 || newPassword == null) return;
 
 	const { canceled: canceled3, result: newPassword2 } = await os.inputText({
 		title: i18n.ts.newPasswordRetype,
 		type: 'password',
 		autocomplete: 'new-password',
 	});
-	if (canceled3) return;
+	if (canceled3 || newPassword2 == null) return;
 
 	if (newPassword !== newPassword2) {
 		os.alert({
diff --git a/packages/frontend/src/pages/settings/theme.vue b/packages/frontend/src/pages/settings/theme.vue
index d8ae356f6b..beae1224e4 100644
--- a/packages/frontend/src/pages/settings/theme.vue
+++ b/packages/frontend/src/pages/settings/theme.vue
@@ -205,8 +205,8 @@ import { computed, ref, watch } from 'vue';
 import JSON5 from 'json5';
 import defaultLightTheme from '@@/themes/l-light.json5';
 import defaultDarkTheme from '@@/themes/d-green-lime.json5';
-import type { Theme } from '@/theme.js';
 import { isSafeMode } from '@@/js/config.js';
+import type { Theme } from '@/theme.js';
 import * as os from '@/os.js';
 import MkSwitch from '@/components/MkSwitch.vue';
 import FormSection from '@/components/form/section.vue';
@@ -275,6 +275,7 @@ async function toggleDarkMode() {
 	const value = !store.r.darkMode.value;
 	if (syncDeviceDarkMode.value) {
 		const { canceled } = await os.confirm({
+			type: 'question',
 			text: i18n.tsx.switchDarkModeManuallyWhenSyncEnabledConfirm({ x: i18n.ts.syncDeviceDarkMode }),
 		});
 		if (canceled) return;
diff --git a/packages/frontend/src/pages/settings/webhook.edit.vue b/packages/frontend/src/pages/settings/webhook.edit.vue
index ee387fb20c..a92d3dc457 100644
--- a/packages/frontend/src/pages/settings/webhook.edit.vue
+++ b/packages/frontend/src/pages/settings/webhook.edit.vue
@@ -149,10 +149,8 @@ async function test(type: Misskey.entities.UserWebhook['on'][number]): Promise<v
 	});
 }
 
-// eslint-disable-next-line @typescript-eslint/no-unused-vars
 const headerActions = computed(() => []);
 
-// eslint-disable-next-line @typescript-eslint/no-unused-vars
 const headerTabs = computed(() => []);
 
 definePage(() => ({
diff --git a/packages/frontend/src/pages/timeline.vue b/packages/frontend/src/pages/timeline.vue
index 1a5f3edc9e..f72549df07 100644
--- a/packages/frontend/src/pages/timeline.vue
+++ b/packages/frontend/src/pages/timeline.vue
@@ -14,7 +14,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			ref="tlComponent"
 			:key="src + withRenotes + withReplies + onlyFiles + withSensitive"
 			:class="$style.tl"
-			:src="src.split(':')[0]"
+			:src="(src.split(':')[0] as (BasicTimelineType | 'list'))"
 			:list="src.split(':')[1]"
 			:withRenotes="withRenotes"
 			:withReplies="withReplies"
diff --git a/packages/frontend/src/pages/user/activity.following.vue b/packages/frontend/src/pages/user/activity.following.vue
index 2cd825f3dc..882b45080e 100644
--- a/packages/frontend/src/pages/user/activity.following.vue
+++ b/packages/frontend/src/pages/user/activity.following.vue
@@ -43,6 +43,8 @@ const fetching = ref(true);
 const { handler: externalTooltipHandler } = useChartTooltip();
 
 async function renderChart() {
+	if (chartEl.value == null) return;
+
 	if (chartInstance) {
 		chartInstance.destroy();
 	}
diff --git a/packages/frontend/src/pages/user/activity.notes.vue b/packages/frontend/src/pages/user/activity.notes.vue
index ddde84ef25..39c9fd7950 100644
--- a/packages/frontend/src/pages/user/activity.notes.vue
+++ b/packages/frontend/src/pages/user/activity.notes.vue
@@ -36,13 +36,15 @@ const props = defineProps<{
 const chartEl = useTemplateRef('chartEl');
 const legendEl = useTemplateRef('legendEl');
 const now = new Date();
-let chartInstance: Chart = null;
+let chartInstance: Chart | null = null;
 const chartLimit = 50;
 const fetching = ref(true);
 
 const { handler: externalTooltipHandler } = useChartTooltip();
 
 async function renderChart() {
+	if (chartEl.value == null) return;
+
 	if (chartInstance) {
 		chartInstance.destroy();
 	}
diff --git a/packages/frontend/src/pages/user/activity.pv.vue b/packages/frontend/src/pages/user/activity.pv.vue
index 34e1fe3abf..9e1b92058b 100644
--- a/packages/frontend/src/pages/user/activity.pv.vue
+++ b/packages/frontend/src/pages/user/activity.pv.vue
@@ -36,13 +36,15 @@ const props = defineProps<{
 const chartEl = useTemplateRef('chartEl');
 const legendEl = useTemplateRef('legendEl');
 const now = new Date();
-let chartInstance: Chart = null;
+let chartInstance: Chart | null = null;
 const chartLimit = 30;
 const fetching = ref(true);
 
 const { handler: externalTooltipHandler } = useChartTooltip();
 
 async function renderChart() {
+	if (chartEl.value == null) return;
+
 	if (chartInstance) {
 		chartInstance.destroy();
 	}
diff --git a/packages/frontend/src/preferences/def.ts b/packages/frontend/src/preferences/def.ts
index 7b045687d6..702d9a4acf 100644
--- a/packages/frontend/src/preferences/def.ts
+++ b/packages/frontend/src/preferences/def.ts
@@ -32,6 +32,8 @@ export type SoundStore = {
 	volume: number;
 };
 
+type OmitStrict<T, K extends keyof T> = T extends any ? Pick<T, Exclude<keyof T, K>> : never;
+
 // NOTE: デフォルト値は他の設定の状態に依存してはならない(依存していた場合、ユーザーがその設定項目単体で「初期値にリセット」した場合不具合の原因になる)
 
 export const PREF_DEF = definePreferences({
@@ -385,7 +387,7 @@ export const PREF_DEF = definePreferences({
 		default: false,
 	},
 	plugins: {
-		default: [] as Plugin[],
+		default: [] as (OmitStrict<Plugin, 'config'> & { config: Record<string, any> })[],
 		mergeStrategy: (a, b) => {
 			const sameIdExists = a.some(x => b.some(y => x.installId === y.installId));
 			if (sameIdExists) throw new Error();
diff --git a/packages/frontend/src/preferences/manager.ts b/packages/frontend/src/preferences/manager.ts
index 0389cf612a..9157ba05d4 100644
--- a/packages/frontend/src/preferences/manager.ts
+++ b/packages/frontend/src/preferences/manager.ts
@@ -109,10 +109,11 @@ export function definePreferences<T extends Record<string, unknown>>(x: {
 }
 
 export function getInitialPrefValue<K extends keyof PREF>(k: K): ValueOf<K> {
-	if (typeof PREF_DEF[k].default === 'function') { // factory
-		return PREF_DEF[k].default();
+	const _default = PREF_DEF[k as string].default;
+	if (typeof _default === 'function') { // factory
+		return _default();
 	} else {
-		return PREF_DEF[k].default;
+		return _default;
 	}
 }
 
diff --git a/packages/frontend/src/ui/_common_/announcements.vue b/packages/frontend/src/ui/_common_/announcements.vue
index f9af8e1ee7..c299e1b1c1 100644
--- a/packages/frontend/src/ui/_common_/announcements.vue
+++ b/packages/frontend/src/ui/_common_/announcements.vue
@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<div :class="$style.root">
+<div v-if="$i" :class="$style.root">
 	<MkA
 		v-for="announcement in $i.unreadAnnouncements.filter(x => x.display === 'banner')"
 		:key="announcement.id"
diff --git a/packages/frontend/src/ui/_common_/common.ts b/packages/frontend/src/ui/_common_/common.ts
index 9872937d21..a9ad36c97a 100644
--- a/packages/frontend/src/ui/_common_/common.ts
+++ b/packages/frontend/src/ui/_common_/common.ts
@@ -12,7 +12,7 @@ import { i18n } from '@/i18n.js';
 import { $i } from '@/i.js';
 
 function toolsMenuItems(): MenuItem[] {
-	return [{
+	const items: MenuItem[] = [{
 		type: 'link',
 		to: '/scratchpad',
 		text: i18n.ts.scratchpad,
@@ -27,17 +27,27 @@ function toolsMenuItems(): MenuItem[] {
 		to: '/clicker',
 		text: '🍪👈',
 		icon: 'ti ti-cookie',
-	}, ($i && ($i.isAdmin || $i.policies.canManageCustomEmojis)) ? {
-		type: 'link',
-		to: '/custom-emojis-manager',
-		text: i18n.ts.manageCustomEmojis,
-		icon: 'ti ti-icons',
-	} : undefined, ($i && ($i.isAdmin || $i.policies.canManageAvatarDecorations)) ? {
-		type: 'link',
-		to: '/avatar-decorations',
-		text: i18n.ts.manageAvatarDecorations,
-		icon: 'ti ti-sparkles',
-	} : undefined];
+	}];
+
+	if ($i && ($i.isAdmin || $i.policies.canManageCustomEmojis)) {
+		items.push({
+			type: 'link',
+			to: '/custom-emojis-manager',
+			text: i18n.ts.manageCustomEmojis,
+			icon: 'ti ti-icons',
+		});
+	}
+
+	if ($i && ($i.isAdmin || $i.policies.canManageAvatarDecorations)) {
+		items.push({
+			type: 'link' as const,
+			to: '/avatar-decorations',
+			text: i18n.ts.manageAvatarDecorations,
+			icon: 'ti ti-sparkles',
+		});
+	}
+
+	return items;
 }
 
 export function openInstanceMenu(ev: MouseEvent) {
diff --git a/packages/frontend/src/ui/_common_/statusbar-rss.vue b/packages/frontend/src/ui/_common_/statusbar-rss.vue
index 7db0d5267d..202972ed46 100644
--- a/packages/frontend/src/ui/_common_/statusbar-rss.vue
+++ b/packages/frontend/src/ui/_common_/statusbar-rss.vue
@@ -29,18 +29,18 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script lang="ts" setup>
 import { ref } from 'vue';
 import * as Misskey from 'misskey-js';
-import MkMarqueeText from '@/components/MkMarqueeText.vue';
 import { useInterval } from '@@/js/use-interval.js';
+import MkMarqueeText from '@/components/MkMarqueeText.vue';
 import { shuffle } from '@/utility/shuffle.js';
 
 const props = defineProps<{
-	url?: string;
+	url: string;
 	shuffle?: boolean;
 	display?: 'marquee' | 'oneByOne';
 	marqueeDuration?: number;
 	marqueeReverse?: boolean;
 	oneByOneInterval?: number;
-	refreshIntervalSec?: number;
+	refreshIntervalSec: number;
 }>();
 
 const items = ref<Misskey.entities.FetchRssResponse['items']>([]);
diff --git a/packages/frontend/src/ui/deck.vue b/packages/frontend/src/ui/deck.vue
index 226981cca8..9f6d8267f7 100644
--- a/packages/frontend/src/ui/deck.vue
+++ b/packages/frontend/src/ui/deck.vue
@@ -10,7 +10,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<div :class="$style.nonTitlebarArea">
 		<XSidebar v-if="!isMobile && prefer.r['deck.navbarPosition'].value === 'left'"/>
 
-		<div :class="[$style.main, { [$style.withWallpaper]: withWallpaper, [$style.withSidebarAndTitlebar]: !isMobile && prefer.r['deck.navbarPosition'].value === 'left' && prefer.r.showTitlebar.value }]" :style="{ backgroundImage: prefer.s['deck.wallpaper'] != null ? `url(${ prefer.s['deck.wallpaper'] })` : null }">
+		<div :class="[$style.main, { [$style.withWallpaper]: withWallpaper, [$style.withSidebarAndTitlebar]: !isMobile && prefer.r['deck.navbarPosition'].value === 'left' && prefer.r.showTitlebar.value }]" :style="{ backgroundImage: prefer.s['deck.wallpaper'] != null ? `url(${ prefer.s['deck.wallpaper'] })` : '' }">
 			<XNavbarH v-if="!isMobile && prefer.r['deck.navbarPosition'].value === 'top'"/>
 
 			<XReloadSuggestion v-if="shouldSuggestReload"/>
diff --git a/packages/frontend/src/utility/admin-lookup.ts b/packages/frontend/src/utility/admin-lookup.ts
index eccc88d8a9..18eebaa8f8 100644
--- a/packages/frontend/src/utility/admin-lookup.ts
+++ b/packages/frontend/src/utility/admin-lookup.ts
@@ -52,7 +52,7 @@ export async function lookupUserByEmail() {
 		const user = await os.apiWithDialog('admin/accounts/find-by-email', { email: result });
 
 		os.pageWindow(`/admin/user/${user.id}`);
-	} catch (err) {
+	} catch (err: any) {
 		if (err.code === 'USER_NOT_FOUND') {
 			os.alert({
 				type: 'error',
diff --git a/packages/frontend/src/utility/chart-legend.ts b/packages/frontend/src/utility/chart-legend.ts
index e701d18dd2..fcbddf5669 100644
--- a/packages/frontend/src/utility/chart-legend.ts
+++ b/packages/frontend/src/utility/chart-legend.ts
@@ -10,7 +10,7 @@ export const chartLegend = (legend: InstanceType<typeof MkChartLegend>) => ({
 	id: 'htmlLegend',
 	afterUpdate(chart, args, options) {
 		// Reuse the built-in legendItems generator
-		const items = chart.options.plugins.legend.labels.generateLabels(chart);
+		const items = chart.options.plugins!.legend!.labels!.generateLabels!(chart);
 
 		legend.update(chart, items);
 	},
diff --git a/packages/frontend/src/utility/clicker-game.ts b/packages/frontend/src/utility/clicker-game.ts
index 0544be7757..4360c58455 100644
--- a/packages/frontend/src/utility/clicker-game.ts
+++ b/packages/frontend/src/utility/clicker-game.ts
@@ -27,7 +27,7 @@ export async function load() {
 			scope: ['clickerGame'],
 			key: 'saveData',
 		});
-	} catch (err) {
+	} catch (err: any) {
 		if (err.code === 'NO_SUCH_KEY') {
 			saveData.value = {
 				gameVersion: 2,
@@ -43,20 +43,6 @@ export async function load() {
 		}
 		throw err;
 	}
-
-	// migration
-	if (saveData.value.gameVersion === 1) {
-		saveData.value = {
-			gameVersion: 2,
-			cookies: saveData.value.cookies,
-			totalCookies: saveData.value.cookies,
-			totalHandmadeCookies: saveData.value.cookies,
-			clicked: saveData.value.clicked,
-			achievements: [],
-			facilities: [],
-		};
-		save();
-	}
 }
 
 export async function save() {
diff --git a/packages/frontend/src/utility/get-note-menu.ts b/packages/frontend/src/utility/get-note-menu.ts
index f7b56040cc..90de952a91 100644
--- a/packages/frontend/src/utility/get-note-menu.ts
+++ b/packages/frontend/src/utility/get-note-menu.ts
@@ -39,7 +39,7 @@ export async function getNoteClipMenu(props: {
 		}
 	}
 
-	const appearNote = getAppearNote(props.note);
+	const appearNote = getAppearNote(props.note) ?? props.note;
 
 	const clips = await clipsCache.fetch();
 	const menu: MenuItem[] = [...clips.map(clip => ({
diff --git a/packages/frontend/src/widgets/WidgetInstanceInfo.vue b/packages/frontend/src/widgets/WidgetInstanceInfo.vue
index 722e6fadb2..7e6a779cf0 100644
--- a/packages/frontend/src/widgets/WidgetInstanceInfo.vue
+++ b/packages/frontend/src/widgets/WidgetInstanceInfo.vue
@@ -7,7 +7,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <div class="_panel">
 	<div :class="$style.container" :style="{ backgroundImage: instance.bannerUrl ? `url(${ instance.bannerUrl })` : undefined }">
 		<div :class="$style.iconContainer">
-			<img :src="instance.iconUrl ?? instance.faviconUrl ?? '/favicon.ico'" alt="" :class="$style.icon"/>
+			<img :src="instance.iconUrl ?? '/favicon.ico'" alt="" :class="$style.icon"/>
 		</div>
 		<div :class="$style.bodyContainer">
 			<div :class="$style.body">
@@ -20,10 +20,10 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 
 <script lang="ts" setup>
+import { host } from '@@/js/config.js';
 import { useWidgetPropsManager } from './widget.js';
 import type { WidgetComponentEmits, WidgetComponentExpose, WidgetComponentProps } from './widget.js';
 import type { FormWithDefault, GetFormResultType } from '@/utility/form.js';
-import { host } from '@@/js/config.js';
 import { instance } from '@/instance.js';
 
 const name = 'instanceInfo';