diff --git a/packages/backend/src/models/repositories/notification.ts b/packages/backend/src/models/repositories/notification.ts
index 044d000313..5bf8ef1b96 100644
--- a/packages/backend/src/models/repositories/notification.ts
+++ b/packages/backend/src/models/repositories/notification.ts
@@ -1,13 +1,10 @@
-import {In} from "typeorm";
 import {Notification} from "@/models/entities/notification.js";
 import {awaitAll} from "@/prelude/await-all.js";
 import type {Packed} from "@/misc/schema.js";
 import type {Note} from "@/models/entities/note.js";
 import type {NoteReaction} from "@/models/entities/note-reaction.js";
-import type {User} from "@/models/entities/user.js";
-import {aggregateNoteEmojis, prefetchEmojis} from "@/misc/populate-emojis.js";
 import {db} from "@/db/postgre.js";
-import {AccessTokens, NoteReactions, Users,} from "../index.js";
+import {AccessTokens, Users,} from "../index.js";
 import {getNote} from "@/server/api/common/getters.js";
 
 export const NotificationRepository = db.getRepository(Notification).extend({
@@ -85,42 +82,4 @@ export const NotificationRepository = db.getRepository(Notification).extend({
 				: {}),
 		});
 	},
-
-	async packMany(notifications: Notification[], meId: User["id"]) {
-		if (notifications.length === 0) return [];
-
-		const notes = notifications
-			.filter((x) => x.note != null)
-			.map((x) => x.note!);
-		const noteIds = notes.map((n) => n.id);
-		const myReactionsMap = new Map<Note["id"], NoteReaction | null>();
-		const renoteIds = notes
-			.filter((n) => n.renoteId != null)
-			.map((n) => n.renoteId!);
-		const targets = [...noteIds, ...renoteIds];
-		const myReactions = await NoteReactions.findBy({
-			userId: meId,
-			noteId: In(targets),
-		});
-
-		for (const target of targets) {
-			myReactionsMap.set(
-				target,
-				myReactions.find((reaction) => reaction.noteId === target) || null,
-			);
-		}
-
-		await prefetchEmojis(aggregateNoteEmojis(notes));
-
-		const results = await Promise.all(
-			notifications.map((x) =>
-				this.pack(x, {
-					_hintForEachNotes_: {
-						myReactions: myReactionsMap,
-					},
-				}).catch((e) => null),
-			),
-		);
-		return results.filter((x) => x != null);
-	},
 });
diff --git a/packages/backend/src/server/api/endpoints.ts b/packages/backend/src/server/api/endpoints.ts
index 7e0f0ba022..b15cdd14fd 100644
--- a/packages/backend/src/server/api/endpoints.ts
+++ b/packages/backend/src/server/api/endpoints.ts
@@ -171,7 +171,6 @@ import * as ep___i_importBlocking from "./endpoints/i/import-blocking.js";
 import * as ep___i_importFollowing from "./endpoints/i/import-following.js";
 import * as ep___i_importMuting from "./endpoints/i/import-muting.js";
 import * as ep___i_importUserLists from "./endpoints/i/import-user-lists.js";
-import * as ep___i_notifications from "./endpoints/i/notifications.js";
 import * as ep___i_pin from "./endpoints/i/pin.js";
 import * as ep___i_readAllUnreadNotes from "./endpoints/i/read-all-unread-notes.js";
 import * as ep___i_readAnnouncement from "./endpoints/i/read-announcement.js";
@@ -463,7 +462,6 @@ const eps = [
 	["i/import-following", ep___i_importFollowing],
 	["i/import-muting", ep___i_importMuting],
 	["i/import-user-lists", ep___i_importUserLists],
-	["i/notifications", ep___i_notifications],
 	["i/pin", ep___i_pin],
 	["i/read-all-unread-notes", ep___i_readAllUnreadNotes],
 	["i/read-announcement", ep___i_readAnnouncement],
diff --git a/packages/backend/src/server/api/endpoints/i/notifications.ts b/packages/backend/src/server/api/endpoints/i/notifications.ts
deleted file mode 100644
index a434f980ce..0000000000
--- a/packages/backend/src/server/api/endpoints/i/notifications.ts
+++ /dev/null
@@ -1,176 +0,0 @@
-import {Brackets} from "typeorm";
-import {Followings, Mutings, Notifications, UserProfiles, Users,} from "@/models/index.js";
-import {notificationTypes} from "@/types.js";
-import read from "@/services/note/read.js";
-import {readNotification} from "../../common/read-notification.js";
-import define from "../../define.js";
-import {makePaginationQuery} from "../../common/make-pagination-query.js";
-
-export const meta = {
-	tags: ["account", "notifications"],
-
-	requireCredential: true,
-
-	limit: {
-		duration: 60000,
-		max: 15,
-	},
-
-	kind: "read:notifications",
-
-	res: {
-		type: "array",
-		optional: false,
-		nullable: false,
-		items: {
-			type: "object",
-			optional: false,
-			nullable: false,
-			ref: "Notification",
-		},
-	},
-} 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" },
-		sinceDate: { type: "integer" },
-		untilDate: { type: "integer" },
-		following: { type: "boolean", default: false },
-		unreadOnly: { type: "boolean", default: false },
-		markAsRead: { type: "boolean", default: true },
-		includeTypes: {
-			type: "array",
-			items: {
-				type: "string",
-				enum: notificationTypes,
-			},
-		},
-		excludeTypes: {
-			type: "array",
-			items: {
-				type: "string",
-				enum: notificationTypes,
-			},
-		},
-	},
-	required: [],
-} as const;
-
-export default define(meta, paramDef, async (ps, user) => {
-	// includeTypes が空の場合はクエリしない
-	if (ps.includeTypes && ps.includeTypes.length === 0) {
-		return [];
-	}
-	// excludeTypes に全指定されている場合はクエリしない
-	if (notificationTypes.every((type) => ps.excludeTypes?.includes(type))) {
-		return [];
-	}
-	const followingQuery = Followings.createQueryBuilder("following")
-		.select("following.followeeId")
-		.where("following.followerId = :followerId", { followerId: user.id });
-
-	const mutingQuery = Mutings.createQueryBuilder("muting")
-		.select("muting.muteeId")
-		.where("muting.muterId = :muterId", { muterId: user.id });
-
-	const mutingInstanceQuery = UserProfiles.createQueryBuilder("user_profile")
-		.select("user_profile.mutedInstances")
-		.where("user_profile.userId = :muterId", { muterId: user.id });
-
-	const suspendedQuery = Users.createQueryBuilder("users")
-		.select("users.id")
-		.where("users.isSuspended = TRUE");
-
-	const query = makePaginationQuery(
-		Notifications.createQueryBuilder("notification"),
-		ps.sinceId,
-		ps.untilId,
-		ps.sinceDate,
-		ps.untilDate
-	)
-		.andWhere("notification.notifieeId = :meId", { meId: user.id })
-		.leftJoinAndSelect("notification.notifier", "notifier")
-		.leftJoinAndSelect("notification.note", "note")
-		.leftJoinAndSelect("note.user", "user")
-		.leftJoinAndSelect("note.reply", "reply")
-		.leftJoinAndSelect("note.renote", "renote")
-		.leftJoinAndSelect("reply.user", "replyUser")
-		.leftJoinAndSelect("renote.user", "renoteUser");
-
-	// muted users
-	query.andWhere(
-		new Brackets((qb) => {
-			qb.where(
-				`notification.notifierId NOT IN (${mutingQuery.getQuery()})`,
-			).orWhere("notification.notifierId IS NULL");
-		}),
-	);
-	query.setParameters(mutingQuery.getParameters());
-
-	// muted instances
-	query.andWhere(
-		new Brackets((qb) => {
-			qb.andWhere("notifier.host IS NULL").orWhere(
-				`NOT (( ${mutingInstanceQuery.getQuery()} )::jsonb ? notifier.host)`,
-			);
-		}),
-	);
-	query.setParameters(mutingInstanceQuery.getParameters());
-
-	// suspended users
-	query.andWhere(
-		new Brackets((qb) => {
-			qb.where(
-				`notification.notifierId NOT IN (${suspendedQuery.getQuery()})`,
-			).orWhere("notification.notifierId IS NULL");
-		}),
-	);
-
-	if (ps.following) {
-		query.andWhere(
-			`((notification.notifierId IN (${followingQuery.getQuery()})) OR (notification.notifierId = :meId))`,
-			{ meId: user.id },
-		);
-		query.setParameters(followingQuery.getParameters());
-	}
-
-	if (ps.includeTypes && ps.includeTypes.length > 0) {
-		query.andWhere("notification.type IN (:...includeTypes)", {
-			includeTypes: ps.includeTypes,
-		});
-	} else if (ps.excludeTypes && ps.excludeTypes.length > 0) {
-		query.andWhere("notification.type NOT IN (:...excludeTypes)", {
-			excludeTypes: ps.excludeTypes,
-		});
-	}
-
-	if (ps.unreadOnly) {
-		query.andWhere("notification.isRead = false");
-	}
-
-	const notifications = await query.take(ps.limit).getMany();
-
-	// Mark all as read
-	if (notifications.length > 0 && ps.markAsRead) {
-		readNotification(
-			user.id,
-			notifications.map((x) => x.id),
-		);
-	}
-
-	const notes = notifications
-		.filter((notification) =>
-			["mention", "reply", "quote"].includes(notification.type),
-		)
-		.map((notification) => notification.note!);
-
-	if (notes.length > 0) {
-		read(user.id, notes);
-	}
-
-	return await Notifications.packMany(notifications, user.id);
-});