diff --git a/src/main/java/org/ntlab/acanthus_server/entities/FollowAddJson.java b/src/main/java/org/ntlab/acanthus_server/entities/FollowAddJson.java
index 741246c..fdfc810 100644
--- a/src/main/java/org/ntlab/acanthus_server/entities/FollowAddJson.java
+++ b/src/main/java/org/ntlab/acanthus_server/entities/FollowAddJson.java
@@ -15,6 +15,10 @@
         this.followUid = followAccount.getUid();
     }
 
+    public String getMessage() {
+        return message;
+    }
+
     public Integer getUid() {
         return uid;
     }
@@ -31,4 +35,7 @@
         this.followUid = followUid;
     }
 
+    public void setMessage(String message) {
+        this.message = message;
+    }
 }
diff --git a/src/main/java/org/ntlab/acanthus_server/entities/FollowUidJson.java b/src/main/java/org/ntlab/acanthus_server/entities/FollowUidJson.java
index 995d5ac..513ff71 100644
--- a/src/main/java/org/ntlab/acanthus_server/entities/FollowUidJson.java
+++ b/src/main/java/org/ntlab/acanthus_server/entities/FollowUidJson.java
@@ -7,7 +7,7 @@
 
 public class FollowUidJson {
     @JsonProperty("followsUid")
-    private Collection<Integer> uidList = new ArrayList<>();
+    private ArrayList<Integer> uidList = new ArrayList<>();
 
     //Json型でフォローしているユーザーIDを表示する処理
     public FollowUidJson(Collection<Integer> followUidList){
@@ -20,7 +20,7 @@
         return uidList;
     }
 
-    public void setUidList(Collection<Integer> uidList) {
+    public void setUidList(ArrayList<Integer> uidList) {
         this.uidList = uidList;
     }
 
diff --git a/src/main/java/org/ntlab/acanthus_server/entities/FollowerUidJson.java b/src/main/java/org/ntlab/acanthus_server/entities/FollowerUidJson.java
index 4fcc657..2d42fe2 100644
--- a/src/main/java/org/ntlab/acanthus_server/entities/FollowerUidJson.java
+++ b/src/main/java/org/ntlab/acanthus_server/entities/FollowerUidJson.java
@@ -7,7 +7,7 @@
 
 public class FollowerUidJson {
     @JsonProperty("followersUid")
-    private Collection<Integer> uidList = new ArrayList<>();
+    private ArrayList<Integer> uidList = new ArrayList<>();
 
     //Json型でフォロワーのユーザーIDを表示する処理
     public FollowerUidJson(Collection<Integer> followUidList){
@@ -20,7 +20,7 @@
         return uidList;
     }
 
-    public void setUidList(Collection<Integer> uidList) {
+    public void setUidList(ArrayList<Integer> uidList) {
         this.uidList = uidList;
     }
 }
diff --git a/src/main/java/org/ntlab/acanthus_server/resources/accounts/FollowsRest.java b/src/main/java/org/ntlab/acanthus_server/resources/accounts/FollowsRest.java
index b36033b..a33b961 100644
--- a/src/main/java/org/ntlab/acanthus_server/resources/accounts/FollowsRest.java
+++ b/src/main/java/org/ntlab/acanthus_server/resources/accounts/FollowsRest.java
@@ -72,7 +72,7 @@
     @Path("/{uid}/follows")
     @DELETE
     @Produces(MediaType.APPLICATION_JSON)
-    public String releaseFollows(@PathParam("uid") Integer uid, @FormParam("token") String token, @FormParam("followUid") Integer followUid){
+    public void releaseFollows(@PathParam("uid") Integer uid, @FormParam("token") String token, @FormParam("followUid") Integer followUid){
         var account = accounts.getAccountByUid(uid);
         var followAccount = account.getFollowsHashMap().get(followUid);//フォロー内アカウント参照
 
@@ -81,7 +81,7 @@
                 account.getFollowsHashMap().remove(followUid);
                 followAccount.getFollowersHashMap().remove(uid);
 
-                return "フォローを解除しました";
+                //return "フォローを解除しました";
             }else {
                 var response = Response.status(401).entity("フォローしているユーザーでないかユーザーIDが間違っています");
                 throw new WebApplicationException(response.build());