diff --git a/packages/backend/src/misc/fetch-meta.ts b/packages/backend/src/misc/fetch-meta.ts
index 3d66f2d63..14372a792 100644
--- a/packages/backend/src/misc/fetch-meta.ts
+++ b/packages/backend/src/misc/fetch-meta.ts
@@ -31,6 +31,11 @@ export function metaToPugArgs(meta: Meta): object {
 	};
 }
 
+export function fetchMetaSync(): Meta | null {
+	return cache;
+}
+
+
 export async function fetchMeta(noCache = false): Promise<Meta> {
 	if (!noCache && cache) return cache;
 
diff --git a/packages/backend/src/models/repositories/drive-file.ts b/packages/backend/src/models/repositories/drive-file.ts
index 68f5f1081..4d6567e81 100644
--- a/packages/backend/src/models/repositories/drive-file.ts
+++ b/packages/backend/src/models/repositories/drive-file.ts
@@ -8,6 +8,7 @@ import config from "@/config/index.js";
 import { appendQuery, query } from "@/prelude/url.js";
 import { DriveFolders, Users } from "../index.js";
 import { deepClone } from "@/misc/clone.js";
+import { fetchMetaSync } from "@/misc/fetch-meta.js";
 
 type PackOptions = {
 	detail?: boolean;
@@ -71,14 +72,9 @@ export const DriveFileRepository = db.getRepository(DriveFile).extend({
 			);
 		}
 
-		// リモートかつ期限切れはローカルプロキシを試みる
-		if (file.uri != null && file.isLink && config.proxyRemoteFiles) {
-			const key = thumbnail ? file.thumbnailAccessKey : file.webpublicAccessKey;
-
-			if (key && !key.match("/")) {
-				// 古いものはここにオブジェクトストレージキーが入ってるので除外
-				return `${config.url}/files/${key}`;
-			}
+		if (file.isLink && config.proxyRemoteFiles) {
+			const url = this.getDatabasePrefetchUrl(file, thumbnail);
+			if (url != null) return `${config.url}/proxy/${encodeURIComponent(new URL(url).pathname)}?${query({ url: url })}`;
 		}
 
 		return thumbnail
@@ -92,6 +88,25 @@ export const DriveFileRepository = db.getRepository(DriveFile).extend({
 			: file.webpublicUrl ?? file.url;
 	},
 
+	getFinalUrl(url: string): string {
+		if (!config.proxyRemoteFiles) return url;
+		if (url.startsWith(`${config.url}/files`)) return url;
+		if (url.startsWith(`${config.url}/static-assets`)) return url;
+		if (url.startsWith(`${config.url}/identicon`)) return url;
+		if (url.startsWith(`${config.url}/avatar`)) return url;
+
+		const meta = fetchMetaSync();
+        const baseUrl = meta ? meta.objectStorageBaseUrl ?? `${meta.objectStorageUseSSL ? "https" : "http"}://${meta.objectStorageEndpoint}${meta.objectStoragePort ? `:${meta.objectStoragePort}` : ""}/${meta.objectStorageBucket}` : null;
+		if (baseUrl !== null && url.startsWith(baseUrl)) return url;
+
+		return `${config.url}/proxy/${encodeURIComponent(new URL(url).pathname)}?${query({ url: url })}`;
+	},
+
+	getFinalUrlMaybe(url?: string | null): string | null {
+		if (url == null) return null;
+		return this.getFinalUrl(url);
+	},
+
 	async calcDriveUsageOf(
 		user: User["id"] | { id: User["id"] },
 	): Promise<number> {
diff --git a/packages/backend/src/models/repositories/user.ts b/packages/backend/src/models/repositories/user.ts
index 43523c95b..3a8b7874a 100644
--- a/packages/backend/src/models/repositories/user.ts
+++ b/packages/backend/src/models/repositories/user.ts
@@ -339,7 +339,7 @@ export const UserRepository = db.getRepository(User).extend({
 				this.getIdenticonUrl(user.id)
 			);
 		} else if (user.avatarId) {
-			if (user.avatarUrl) return user.avatarUrl;
+			if (user.avatarUrl) return DriveFiles.getFinalUrl(user.avatarUrl);
 			const avatar = await DriveFiles.findOneByOrFail({ id: user.avatarId });
 			return (
 				DriveFiles.getPublicUrl(avatar, true) || this.getIdenticonUrl(user.id)
@@ -351,7 +351,7 @@ export const UserRepository = db.getRepository(User).extend({
 
 	getAvatarUrlSync(user: User): string {
 		if (user.avatarId && user.avatarUrl) {
-			return user.avatarUrl;
+			return DriveFiles.getFinalUrl(user.avatarUrl);
 		} else if (user.avatar) {
 			return (
 				DriveFiles.getPublicUrl(user.avatar, true) ||
@@ -514,7 +514,7 @@ export const UserRepository = db.getRepository(User).extend({
 						lastFetchedAt: user.lastFetchedAt
 							? user.lastFetchedAt.toISOString()
 							: null,
-						bannerUrl: user.bannerId ? (user.bannerUrl ?? (user.banner
+						bannerUrl: user.bannerId ? (DriveFiles.getFinalUrlMaybe(user.bannerUrl) ?? (user.banner
 							? DriveFiles.getPublicUrl(user.banner, false)
 							: null)) : null,
 						bannerBlurhash: user.bannerId ? (user.bannerBlurhash ?? user.banner?.blurhash ?? null) : null,
diff --git a/packages/backend/src/server/api/mastodon/converters/user.ts b/packages/backend/src/server/api/mastodon/converters/user.ts
index 07b9add43..5ac37e805 100644
--- a/packages/backend/src/server/api/mastodon/converters/user.ts
+++ b/packages/backend/src/server/api/mastodon/converters/user.ts
@@ -35,12 +35,14 @@ export class UserConverter {
             const profile = UserProfiles.findOneBy({ userId: u.id });
             const bio = profile.then(profile => MfmHelpers.toHtml(mfm.parse(profile?.description ?? ""), profile?.mentions, u.host).then(p => p ?? escapeMFM(profile?.description ?? "")));
             const avatar = u.avatarId
-                ? u.avatarUrl ?? (DriveFiles.findOneBy({ id: u.avatarId }))
+                ? DriveFiles.getFinalUrlMaybe(u.avatarUrl) ?? (DriveFiles.findOneBy({ id: u.avatarId }))
                     .then(p => p?.url ?? Users.getIdenticonUrl(u.id))
+					.then(p => DriveFiles.getFinalUrl(p))
                 : Users.getIdenticonUrl(u.id);
             const banner = u.bannerId
-                ? u.bannerUrl ?? (DriveFiles.findOneBy({ id: u.bannerId }))
-                    .then(p => p?.url ?? `${config.url}/static-assets/transparent.png`)
+                ? DriveFiles.getFinalUrlMaybe(u.bannerUrl) ?? (DriveFiles.findOneBy({ id: u.bannerId }))
+					.then(p => p?.url ?? `${config.url}/static-assets/transparent.png`)
+					.then(p => DriveFiles.getFinalUrl(p))
                 : `${config.url}/static-assets/transparent.png`;
 
             const isFollowedOrSelf = !!localUser &&