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 4eaeb7a..78f6291 100644
--- a/src/main/java/org/ntlab/acanthus_server/entities/Animation.java
+++ b/src/main/java/org/ntlab/acanthus_server/entities/Animation.java
@@ -50,7 +50,6 @@
     private boolean isDummy;
 
 
-
     public Animation(Integer aid, String name, Account owner) {
 
         LocalDateTime date = LocalDateTime.now();
@@ -77,6 +76,7 @@
 
     // page情報
     private ArrayList<Page> pages = new ArrayList<>();
+
     public ArrayList<Page> getPages() {
         return (this.pages);
     }
@@ -105,6 +105,10 @@
         this.lastUpdate = dt.toString();
     }
 
+    public void setPageMap(int pid, Page page) {
+        this.pageMap.put(pid, page);
+    }
+
     //-----------------------------------------------------------------
     // add
 
@@ -147,9 +151,13 @@
         return invites;
     }
 
-    public String getCreatedDate(){return createdDate;}
+    public String getCreatedDate() {
+        return createdDate;
+    }
 
-    public String getLastUpdate(){return lastUpdate;}
+    public String getLastUpdate() {
+        return lastUpdate;
+    }
 
     //-----------------------------------------------------------------
     // remover
diff --git a/src/main/java/org/ntlab/acanthus_server/resources/gallery/PagesRest.java b/src/main/java/org/ntlab/acanthus_server/resources/gallery/PagesRest.java
index ba96364..96ee38c 100644
--- a/src/main/java/org/ntlab/acanthus_server/resources/gallery/PagesRest.java
+++ b/src/main/java/org/ntlab/acanthus_server/resources/gallery/PagesRest.java
@@ -10,6 +10,8 @@
 import javax.ws.rs.*;
 import javax.ws.rs.core.MediaType;
 import java.util.ArrayList;
+import java.util.Random;
+import java.util.UUID;
 
 // _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
 //
@@ -41,9 +43,13 @@
     @POST
     @Produces(MediaType.APPLICATION_JSON)
     public Integer addPage(@PathParam("aid") Integer aid) {
-        var pages = gallery.getAnimationByAid(aid).getPages();
-        pages.add(new Page());
-        return pages.size();
+        var animation = gallery.getAnimationByAid(aid);
+        var newPage = new Page();
+
+        animation.getPages().add(newPage);
+        animation.setPageMap(new Random().nextInt(), newPage);
+
+        return animation.getPages().size();
     }
     // _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
 }