diff --git a/src/main/java/org/ntlab/nemophila/models/accounts/AccountManager.java b/src/main/java/org/ntlab/nemophila/models/accounts/AccountManager.java
index bf6cbfc..45b8dbc 100644
--- a/src/main/java/org/ntlab/nemophila/models/accounts/AccountManager.java
+++ b/src/main/java/org/ntlab/nemophila/models/accounts/AccountManager.java
@@ -11,31 +11,32 @@
     private AccountManager() {
 
     }
-
+    //シングルトン化
     public static AccountManager getInstance() {
         if(theInstance == null){
             theInstance = new AccountManager();
         }
         return theInstance;
     }
-
+    //アカウントの取得
     public Account getAccount(String id){
         return accountsMap.get(id);
     }
-
+    //新規アカウントの作成
     public Account createAccount(String name, String pw){
+        //ランダムにトークンを作成
         UUID uuid = UUID.randomUUID();
         String token = (String) uuid.toString();
-
         Account ac = new Account(name, pw);
         ac.setToken(token);
+        //IDの作成
         String id = Integer.toString(newId);
         ac.setId(id);
         newId++;
         accountsMap.put(id, ac);
         return ac;
     }
-
+    //再ログイン時に新しいトークンを更新する
     public Account updateAccount(String id) {
         Account ac = accountsMap.get(id);
         UUID uuid = UUID.randomUUID();
@@ -43,4 +44,10 @@
         ac.setToken(token);
         return ac;
     }
+    //アカウント消去
+    public void deleteAccount(String id){
+        accountsMap.remove(id);
+    }
+
+
 }