diff --git a/src/main/java/com/example/cosmos_serversb/entities/Group.java b/src/main/java/com/example/cosmos_serversb/entities/Group.java
index b1d1dcb..8ef2dee 100644
--- a/src/main/java/com/example/cosmos_serversb/entities/Group.java
+++ b/src/main/java/com/example/cosmos_serversb/entities/Group.java
@@ -2,12 +2,14 @@
 package com.example.cosmos_serversb.entities;
 
 import java.util.ArrayList;
+import java.util.Set;
 
 public class Group {
     private String gId;
     private String uri, name;
     private ArrayList<User> members;
-    private ArrayList<Request> requests;
+    //private ArrayList<Request> requests;
+    private Set<Request> requests;
 
     public Group(){
 
@@ -51,6 +53,23 @@
         return name;
     }
 
+    public Set<Request> getRequests(){
+        return requests;
+    }
+
+    public void setRequests(Set<Request> requests){
+        this.requests = requests;
+    }
+
+    public void addRequests(Request request){
+        requests.add(request);
+    }
+
+    public ArrayList<Request> getRequestsList(){
+        ArrayList<Request> list = new ArrayList<Request>(getRequests());
+        return list;
+    }
+
     /*メンバー*/
     //public ArrayList<User> getMembersList(){
     //    return null;