diff --git a/src/main/java/org/ntlab/acanthus_server/entities/Animation.java b/src/main/java/org/ntlab/acanthus_server/entities/Animation.java
index a0beb6a..296bedb 100644
--- a/src/main/java/org/ntlab/acanthus_server/entities/Animation.java
+++ b/src/main/java/org/ntlab/acanthus_server/entities/Animation.java
@@ -38,6 +38,10 @@
         this.pageMap.put(0, 0);
     }
 
+    public Animation(Account account) {
+        createDummyAnimation(account);
+    }
+
     //private Gallery gallery = Gallery.getInstance();
     //private Accounts accounts = Accounts.getInstance();
 
diff --git a/src/main/java/org/ntlab/acanthus_server/models/Gallery.java b/src/main/java/org/ntlab/acanthus_server/models/Gallery.java
index c18b3f2..d91f92d 100644
--- a/src/main/java/org/ntlab/acanthus_server/models/Gallery.java
+++ b/src/main/java/org/ntlab/acanthus_server/models/Gallery.java
@@ -29,7 +29,7 @@
 
     /*インスタンス生成を禁止するコンストラクタ*/
     private Gallery(){
-
+        createDummyAnimation();
     }
 
     //-----------------------------------------------------------------
@@ -39,10 +39,13 @@
     public  Collection<Animation> getAllAnimation(){return animationHashMap.values();}
 
     //-----------------------------------------------------------------
-    // 1つの作品の全ての情報を返す．
+    // 1つの作品の全ての情報を返す．この二つのメソッドは同じです。どっちを使っても
 
     public Animation getAnimationInformation( Integer aid){return animationHashMap.get(aid);}
 
+    public Animation getAnimationByAid(Integer aid) {
+        return animationHashMap.get(aid);
+    }
 
 
     //-----------------------------------------------------------------
@@ -56,7 +59,15 @@
         return aid;
     }
 
-    public Animation getAnimationByAid(Integer aid) {
-        return animationHashMap.get(aid);
+
+    //-----------------------------------------------------------------
+    //-----------------------------------------------------------------
+    // ダミー作品生成
+    private void createDummyAnimation(){
+        var dummyAnimation = new Animation(Accounts.getInstance().getAccountByUid(1));
+        animationHashMap.put(dummyAnimation.getAid(), dummyAnimation);
     }
+    //-----------------------------------------------------------------
+
+
 }