diff --git a/packages/backend/src/server/api/endpoints/admin/ad/create.ts b/packages/backend/src/server/api/endpoints/admin/ad/create.ts
deleted file mode 100644
index ab2c50b50..000000000
--- a/packages/backend/src/server/api/endpoints/admin/ad/create.ts
+++ /dev/null
@@ -1,39 +0,0 @@
-import define from '../../../define.js';
-import { Ads } from '@/models/index.js';
-import { genId } from '@/misc/gen-id.js';
-
-export const meta = {
-	tags: ['admin'],
-
-	requireCredential: true,
-	requireModerator: true,
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		url: { type: 'string', minLength: 1 },
-		memo: { type: 'string' },
-		place: { type: 'string' },
-		priority: { type: 'string' },
-		ratio: { type: 'integer' },
-		expiresAt: { type: 'integer' },
-		imageUrl: { type: 'string', minLength: 1 },
-	},
-	required: ['url', 'memo', 'place', 'priority', 'ratio', 'expiresAt', 'imageUrl'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps) => {
-	await Ads.insert({
-		id: genId(),
-		createdAt: new Date(),
-		expiresAt: new Date(ps.expiresAt),
-		url: ps.url,
-		imageUrl: ps.imageUrl,
-		priority: ps.priority,
-		ratio: ps.ratio,
-		place: ps.place,
-		memo: ps.memo,
-	});
-});
diff --git a/packages/backend/src/server/api/endpoints/admin/ad/delete.ts b/packages/backend/src/server/api/endpoints/admin/ad/delete.ts
deleted file mode 100644
index 0ead2be00..000000000
--- a/packages/backend/src/server/api/endpoints/admin/ad/delete.ts
+++ /dev/null
@@ -1,35 +0,0 @@
-import define from '../../../define.js';
-import { Ads } from '@/models/index.js';
-import { ApiError } from '../../../error.js';
-
-export const meta = {
-	tags: ['admin'],
-
-	requireCredential: true,
-	requireModerator: true,
-
-	errors: {
-		noSuchAd: {
-			message: 'No such ad.',
-			code: 'NO_SUCH_AD',
-			id: 'ccac9863-3a03-416e-b899-8a64041118b1',
-		},
-	},
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		id: { type: 'string', format: 'misskey:id' },
-	},
-	required: ['id'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, me) => {
-	const ad = await Ads.findOneBy({ id: ps.id });
-
-	if (ad == null) throw new ApiError(meta.errors.noSuchAd);
-
-	await Ads.delete(ad.id);
-});
diff --git a/packages/backend/src/server/api/endpoints/admin/ad/list.ts b/packages/backend/src/server/api/endpoints/admin/ad/list.ts
deleted file mode 100644
index 74f154f27..000000000
--- a/packages/backend/src/server/api/endpoints/admin/ad/list.ts
+++ /dev/null
@@ -1,30 +0,0 @@
-import define from '../../../define.js';
-import { Ads } from '@/models/index.js';
-import { makePaginationQuery } from '../../../common/make-pagination-query.js';
-
-export const meta = {
-	tags: ['admin'],
-
-	requireCredential: true,
-	requireModerator: true,
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
-		sinceId: { type: 'string', format: 'misskey:id' },
-		untilId: { type: 'string', format: 'misskey:id' },
-	},
-	required: [],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps) => {
-	const query = makePaginationQuery(Ads.createQueryBuilder('ad'), ps.sinceId, ps.untilId)
-		.andWhere('ad.expiresAt > :now', { now: new Date() });
-
-	const ads = await query.take(ps.limit).getMany();
-
-	return ads;
-});
diff --git a/packages/backend/src/server/api/endpoints/admin/ad/update.ts b/packages/backend/src/server/api/endpoints/admin/ad/update.ts
deleted file mode 100644
index 650f8670e..000000000
--- a/packages/backend/src/server/api/endpoints/admin/ad/update.ts
+++ /dev/null
@@ -1,50 +0,0 @@
-import define from '../../../define.js';
-import { Ads } from '@/models/index.js';
-import { ApiError } from '../../../error.js';
-
-export const meta = {
-	tags: ['admin'],
-
-	requireCredential: true,
-	requireModerator: true,
-
-	errors: {
-		noSuchAd: {
-			message: 'No such ad.',
-			code: 'NO_SUCH_AD',
-			id: 'b7aa1727-1354-47bc-a182-3a9c3973d300',
-		},
-	},
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		id: { type: 'string', format: 'misskey:id' },
-		memo: { type: 'string' },
-		url: { type: 'string', minLength: 1 },
-		imageUrl: { type: 'string', minLength: 1 },
-		place: { type: 'string' },
-		priority: { type: 'string' },
-		ratio: { type: 'integer' },
-		expiresAt: { type: 'integer' },
-	},
-	required: ['id', 'memo', 'url', 'imageUrl', 'place', 'priority', 'ratio', 'expiresAt'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, me) => {
-	const ad = await Ads.findOneBy({ id: ps.id });
-
-	if (ad == null) throw new ApiError(meta.errors.noSuchAd);
-
-	await Ads.update(ad.id, {
-		url: ps.url,
-		place: ps.place,
-		priority: ps.priority,
-		ratio: ps.ratio,
-		memo: ps.memo,
-		imageUrl: ps.imageUrl,
-		expiresAt: new Date(ps.expiresAt),
-	});
-});
diff --git a/packages/backend/src/server/api/endpoints/meta.ts b/packages/backend/src/server/api/endpoints/meta.ts
index c2ea75457..99a4187c2 100644
--- a/packages/backend/src/server/api/endpoints/meta.ts
+++ b/packages/backend/src/server/api/endpoints/meta.ts
@@ -1,7 +1,7 @@
 import { IsNull, MoreThan } from 'typeorm';
 import config from '@/config/index.js';
 import { fetchMeta } from '@/misc/fetch-meta.js';
-import { Ads, Emojis, Users } from '@/models/index.js';
+import { Emojis, Users } from '@/models/index.js';
 import { MAX_NOTE_TEXT_LENGTH } from '@/const.js';
 import define from '../define.js';
 
@@ -168,30 +168,6 @@ export const meta = {
 					},
 				},
 			},
-			ads: {
-				type: 'array',
-				optional: false, nullable: false,
-				items: {
-					type: 'object',
-					optional: false, nullable: false,
-					properties: {
-						place: {
-							type: 'string',
-							optional: false, nullable: false,
-						},
-						url: {
-							type: 'string',
-							optional: false, nullable: false,
-							format: 'url',
-						},
-						imageUrl: {
-							type: 'string',
-							optional: false, nullable: false,
-							format: 'url',
-						},
-					},
-				},
-			},
 			requireSetup: {
 				type: 'boolean',
 				optional: false, nullable: false,
@@ -310,12 +286,6 @@ export default define(meta, paramDef, async (ps, me) => {
 		},
 	});
 
-	const ads = await Ads.find({
-		where: {
-			expiresAt: MoreThan(new Date()),
-		},
-	});
-
 	const response: any = {
 		maintainerName: instance.maintainerName,
 		maintainerEmail: instance.maintainerEmail,
@@ -349,13 +319,6 @@ export default define(meta, paramDef, async (ps, me) => {
 		emojis: await Emojis.packMany(emojis),
 		defaultLightTheme: instance.defaultLightTheme,
 		defaultDarkTheme: instance.defaultDarkTheme,
-		ads: ads.map(ad => ({
-			id: ad.id,
-			url: ad.url,
-			place: ad.place,
-			ratio: ad.ratio,
-			imageUrl: ad.imageUrl,
-		})),
 		enableEmail: instance.enableEmail,
 
 		enableTwitterIntegration: instance.enableTwitterIntegration,