diff --git a/migration/1651804009671-useRanking.ts b/migration/1651804009671-useRanking.ts
new file mode 100644
index 0000000..59a7e7f
--- /dev/null
+++ b/migration/1651804009671-useRanking.ts
@@ -0,0 +1,13 @@
+import {MigrationInterface, QueryRunner} from "typeorm";
+
+export class useRanking1651804009671 implements MigrationInterface {
+	name = 'useRanking1651804009671'
+
+	public async up(queryRunner: QueryRunner): Promise<void> {
+		await queryRunner.query(`ALTER TABLE "user" ADD "useRanking" boolean NOT NULL DEFAULT false`);
+	}
+
+	public async down(queryRunner: QueryRunner): Promise<void> {
+		await queryRunner.query(`ALTER TABLE "user" DROP COLUMN "useRanking"`);
+	}
+}
diff --git a/src/backend/controllers/body/user-setting.ts b/src/backend/controllers/body/user-setting.ts
index 7383e7d..759837c 100644
--- a/src/backend/controllers/body/user-setting.ts
+++ b/src/backend/controllers/body/user-setting.ts
@@ -19,4 +19,7 @@ export class UserSetting {
 
 	@IsOptional()
 	template?: string;
+
+	@IsOptional()
+	useRanking?: boolean;
 }
diff --git a/src/backend/controllers/session.ts b/src/backend/controllers/session.ts
index eedb57b..92faca1 100644
--- a/src/backend/controllers/session.ts
+++ b/src/backend/controllers/session.ts
@@ -30,6 +30,7 @@ export class SessionController {
 		if (setting.localOnly != null) s.localOnly = setting.localOnly;
 		if (setting.remoteFollowersOnly != null) s.remoteFollowersOnly = setting.remoteFollowersOnly;
 		if (setting.template !== undefined) s.template = setting.template;
+		if (setting.useRanking !== undefined) s.useRanking = setting.useRanking;
 		if (Object.keys(s).length === 0) return;
 		await updateUser(user.username, user.host, s);
 	}
diff --git a/src/backend/functions/ranking.ts b/src/backend/functions/ranking.ts
index c24b10d..1c5a699 100644
--- a/src/backend/functions/ranking.ts
+++ b/src/backend/functions/ranking.ts
@@ -8,7 +8,9 @@ import { User } from '../models/entities/user';
  */
 export const getRanking = async (limit?: number | null): Promise<User[]> => {
 	const query = Users.createQueryBuilder('user')
-		.where('"user"."bannedFromRanking" IS NOT TRUE')
+		.where('"user"."useRanking" IS TRUE')
+		.andWhere('"user"."bannedFromRanking" IS NOT TRUE')
+		.andWhere('"user"."rating" <> \'NaN\'')
 		.orderBy('"user".rating', 'DESC');
 
 	if (limit) {
diff --git a/src/backend/models/entities/user.ts b/src/backend/models/entities/user.ts
index 7b3a9bf..cba5eeb 100644
--- a/src/backend/models/entities/user.ts
+++ b/src/backend/models/entities/user.ts
@@ -93,6 +93,12 @@ export class User implements IUser {
 	})
 	public rating: number;
 
+	@Column({
+		type: 'boolean',
+		default: false,
+	})
+	public useRanking: boolean;
+
 	@Column({
 		type: 'boolean',
 		default: false,
diff --git a/src/common/types/user.ts b/src/common/types/user.ts
index 39d3a6f..bfe866b 100644
--- a/src/common/types/user.ts
+++ b/src/common/types/user.ts
@@ -20,5 +20,6 @@ export interface IUser {
 	bannedFromRanking: boolean;
 	isAdmin?: boolean;
 	tokenVersion: number;
+	useRanking: boolean;
 }
 
diff --git a/src/frontend/components/MisshaiPage.tsx b/src/frontend/components/MisshaiPage.tsx
index 6ad929c..3f56cb5 100644
--- a/src/frontend/components/MisshaiPage.tsx
+++ b/src/frontend/components/MisshaiPage.tsx
@@ -35,6 +35,7 @@ type SettingDraftType = Partial<Pick<IUser,
 	| 'localOnly'
 	| 'remoteFollowersOnly'
 	| 'template'
+	| 'useRanking'
 >>;
 
 type DraftReducer = React.Reducer<SettingDraftType, Partial<SettingDraftType>>;
@@ -57,6 +58,7 @@ export const MisshaiPage: React.VFC = () => {
 		localOnly: data?.localOnly ?? false,
 		remoteFollowersOnly: data?.remoteFollowersOnly ?? false,
 		template: data?.template ?? null,
+		useRanking: data?.useRanking ?? false,
 	});
 
 	const templateTextarea = useRef<HTMLTextAreaElement>(null);
@@ -98,6 +100,7 @@ export const MisshaiPage: React.VFC = () => {
 				localOnly: data.localOnly,
 				remoteFollowersOnly: data.remoteFollowersOnly,
 				template: data.template,
+				useRanking: data.useRanking
 			});
 		}
 	}, [data]);
@@ -245,7 +248,13 @@ export const MisshaiPage: React.VFC = () => {
 				<div className="body">
 					<h1><i className="bi-bar-chart"></i> {t('_missHai.ranking')}</h1>
 					<Ranking limit={limit} />
-					{limit && <button className="btn link" onClick={() => setLimit(undefined)}>{t('_missHai.showAll')}</button>}
+					{limit && <button className="btn primary" onClick={() => setLimit(undefined)}>{t('_missHai.showAll')}</button>}
+					<label className="input-check mt-2">
+						<input type="checkbox" checked={draft.useRanking} onChange={(e) => {
+							updateSetting({ useRanking: e.target.checked });
+						}}/>
+						<span>{t('_missHai.useRanking')}</span>
+					</label>
 				</div>
 			</div>
 			<div className="misshaiPageLayout">
diff --git a/src/frontend/langs/ja-JP.json b/src/frontend/langs/ja-JP.json
index 3e56a3f..65693ae 100644
--- a/src/frontend/langs/ja-JP.json
+++ b/src/frontend/langs/ja-JP.json
@@ -38,7 +38,7 @@
 	"error": "エラー",
 	"retry": "やり直す",
 	"saved": "保存しました。",
-	"disclaimerForMisskeyHq": "Misskey Toolsは、Misskey HQの公式ツールでは<b>ありません</b>。",
+	"disclaimerForMisskeyHq": "Misskey Toolsは、Misskey Development Divisionの公式ツールでは<b>ありません</b>。",
 	"translatedByTheCommunity": "Misskey Toolsはボランティアによって翻訳されています。",
 	"helpTranslation": "翻訳に協力する",
 	"announcements": "お知らせ",
@@ -81,7 +81,8 @@
 		"dataDelta": "前日比",
 		"rating": "レート",
 		"order": "順位",
-		"showRanking": "ランキングを見る"
+		"showRanking": "ランキングを見る",
+		"useRanking": "ランキングに参加する"
 	},
 	"_accounts": {
 		"currentAccount": "現在ログインしているアカウント",