diff --git a/src/main/java/org/ntlab/citrusserver/repositories/BookManager.java b/src/main/java/org/ntlab/citrusserver/repositories/BookManager.java
index c5bbf15..cadd0f9 100644
--- a/src/main/java/org/ntlab/citrusserver/repositories/BookManager.java
+++ b/src/main/java/org/ntlab/citrusserver/repositories/BookManager.java
@@ -9,6 +9,11 @@
 public class BookManager {
 
     private HashMap<String, HashMap<Integer, Book>> booksMap = new HashMap<>();
+    private final AccountManager accountManager; //仮
+
+    public BookManager(AccountManager accountManager) {
+        this.accountManager = accountManager;
+    }
 
     //本の一覧を返す
     public HashMap<String, HashMap<Integer, Book>> getBooks()
@@ -19,9 +24,9 @@
     //本の新規作成
     public int createBook(String accountId, String title, String color, Boolean publicity)
     {
-        Account account = new Account(); //仮（Account作成時に相談）
-        Book book = new Book(title, publicity, color);
-        int newBookId = account.getNewBookId(); //仮（本の数を更新し、AccountIDを返してもらう）
+        Account account = accountManager.getAccount(accountId); //アカウントの取得
+        Book book = new Book(title, publicity, color); //本の初期化
+        int newBookId = account.getNewBookId(); //新たに生成されたIdを取得（作成数もここで加算している）
         booksMap.get(accountId).put(newBookId, book); //ブックに追加
         return newBookId;
     }