diff --git a/cosmosdb/src/common.ts b/cosmosdb/src/common.ts
index 8d0e01f..a31d51c 100644
--- a/cosmosdb/src/common.ts
+++ b/cosmosdb/src/common.ts
@@ -7,11 +7,11 @@ import {
   SqlQuerySpec,
   UpsertOperationInput,
 } from "@azure/cosmos";
+import { Dirent, existsSync, readFileSync, readdirSync } from "fs";
+import { join } from "path";
 import { v4 as uuidv4 } from "uuid";
 import { Question, Test } from "../../types/cosmosDB";
 import { ImportData, ImportDatabaseData, ImportItem } from "../../types/import";
-import { Dirent, existsSync, readFileSync, readdirSync } from "fs";
-import { join } from "path";
 
 /**
  * コマンドライン引数でコース名/テスト名指定した場合は、インポートデータから
@@ -69,17 +69,6 @@ export const createDatabasesAndContainers = async (
 ): Promise<void> => {
   let databaseRes: DatabaseResponse;
 
-  // Systemsデータベース
-  databaseRes = await cosmosClient.databases.createIfNotExists({
-    id: "Systems",
-  });
-
-  // SystemsデータベースのFlagコンテナー
-  await databaseRes.database.containers.createIfNotExists({
-    id: "Flag",
-    partitionKey: "/id",
-  });
-
   // Usersデータベース
   databaseRes = await cosmosClient.databases.createIfNotExists({
     id: "Users",
diff --git a/functions/src/en2ja.ts b/functions/src/en2ja.ts
index 524caca..56e0d30 100644
--- a/functions/src/en2ja.ts
+++ b/functions/src/en2ja.ts
@@ -1,17 +1,10 @@
-import { FeedResponse, ItemResponse, SqlQuerySpec } from "@azure/cosmos";
 import {
   HttpRequest,
   HttpResponseInit,
   InvocationContext,
 } from "@azure/functions";
-import { getReadWriteContainer } from "./cosmosDBWrapper";
-import { Flag } from "../cosmosDB";
-import { translateByAzureTranslator, translateByDeepL } from "./axiosWrapper";
 import { PutEn2JaReq, PutEn2JaRes } from "../functions";
-
-const COSMOS_DB_DATABASE_NAME = "Systems";
-const COSMOS_DB_CONTAINER_NAME = "Flag";
-const COSMOS_DB_ITEMS_ID = "isUsedUpTransLator";
+import { translateByAzureTranslator, translateByDeepL } from "./axiosWrapper";
 
 export default async function (
   request: HttpRequest,
@@ -22,61 +15,17 @@ export default async function (
     const texts: PutEn2JaReq = testsStr !== "" && JSON.parse(testsStr);
     context.info({ texts });
 
-    // Cosmos DBのSystemsデータベースのFlagsコンテナーから、
-    // Azure Translatorの無料枠を使い切ったかのフラグを取得
-    let isUsedUpTransLator: boolean = false;
-    const query: SqlQuerySpec = {
-      query: "SELECT * FROM c WHERE c.id = @id",
-      parameters: [{ name: "@id", value: COSMOS_DB_ITEMS_ID }],
-    };
-    const container = getReadWriteContainer(
-      COSMOS_DB_DATABASE_NAME,
-      COSMOS_DB_CONTAINER_NAME
+    // Azure Translatorで翻訳
+    // Azure Translatorの無料枠を使い切った場合はWarningログを出力し、代わりにDeepLで翻訳
+    let jsonBody: PutEn2JaRes | undefined = await translateByAzureTranslator(
+      texts
     );
-    const fetchAllResponse: FeedResponse<Flag> = await container.items
-      .query<Flag>(query)
-      .fetchAll();
-    context.info({ fetchAllResponse });
-
-    // 当月中にAzure Translatorの無料枠を使い切ったことがある場合、Azure Translatorにリクエストする必要がないため
-    // 最初からDeepLにリクエストを送るように制御する
-    if (fetchAllResponse.resources.length > 0) {
-      const now: Date = new Date();
-      if (
-        fetchAllResponse.resources[0].year === now.getFullYear() &&
-        fetchAllResponse.resources[0].month === now.getMonth() + 1
-      ) {
-        isUsedUpTransLator = true;
-      } else {
-        const deleteResponse: ItemResponse<Flag> = await container
-          .item(COSMOS_DB_ITEMS_ID)
-          .delete<Flag>();
-        context.info({ deleteResponse });
-      }
-    }
-
-    let jsonBody: PutEn2JaRes | undefined = undefined;
-    if (isUsedUpTransLator) {
+    if (!jsonBody) {
+      context.warn("Azure Translator Free Tier is used up.");
       jsonBody = await translateByDeepL(texts);
-    } else {
-      jsonBody = await translateByAzureTranslator(texts);
-      if (!jsonBody) {
-        // Azure Translatorの無料枠を使い切ったため、Warningログを出力してフラグを設定
-        context.warn("Azure Translator Free Tier is used up.");
-        const now: Date = new Date();
-        const upsertResponse: ItemResponse<Flag> =
-          await container.items.upsert<Flag>({
-            id: COSMOS_DB_ITEMS_ID,
-            year: now.getFullYear(),
-            month: now.getMonth() + 1,
-          });
-        context.info({ upsertResponse });
-
-        jsonBody = await translateByDeepL(texts);
-      }
     }
     context.info({ body: jsonBody });
-    if (!jsonBody) throw new Error("Translated texts are empty.");
+    if (!jsonBody) throw new Error("Cannot translate texts.");
 
     return { status: 200, jsonBody };
   } catch (e) {
diff --git a/types/cosmosDB.ts b/types/cosmosDB.ts
index e64f596..3ff09d3 100644
--- a/types/cosmosDB.ts
+++ b/types/cosmosDB.ts
@@ -28,9 +28,3 @@ export type Test = {
   testName: string;
   length: number;
 };
-
-export type Flag = {
-  id: string;
-  year: number;
-  month: number;
-};