diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 09ad5d2..40840fd 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -61,6 +61,9 @@
         <activity
             android:name=".views.MainActivity"
             android:exported="true" />
+        <activity
+            android:name=".views.ChatActivity"
+            android:exported="false" />
     </application>
 
 </manifest>
diff --git a/app/src/main/java/com/example/tampopo_client/viewmodels/UserViewModel.java b/app/src/main/java/com/example/tampopo_client/viewmodels/UserViewModel.java
index 1ddbd4b..15936e6 100644
--- a/app/src/main/java/com/example/tampopo_client/viewmodels/UserViewModel.java
+++ b/app/src/main/java/com/example/tampopo_client/viewmodels/UserViewModel.java
@@ -7,6 +7,8 @@
 import com.example.tampopo_client.models.User;
 import com.example.tampopo_client.resources.UserResource;
 
+import java.io.IOException;
+
 import retrofit2.Call;
 import retrofit2.Callback;
 import retrofit2.Response;
@@ -105,24 +107,55 @@
             }
         });
     }
+    //ニックネーム
+    public String getNickname(String id) {
+        Call<String> call = userResource.getName(id);
+        try {
+            Response<String> response = call.execute();
+
+            if (response.isSuccessful()) {
+                System.out.println(response.code());
+                return response.body();
+            } else {
+                System.out.println(response.code());
+                return null;
+            }
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+//
+    }
 
     //アイコン
-    public void getIcon(String id) {
+    public String getIcon(String id) {
         Call<String> call = userResource.getIcon(id);
-        call.enqueue(new Callback<String>() {
-            @Override
-            public void onResponse(Call<String> call, Response<String> response) {
-                if (response.isSuccessful()) {
-                    icon.setValue(response.body());
-                    System.out.println(response.code());
-                } else {
-                    System.out.println(response.code());
-                }
+        try {
+            Response<String> response = call.execute();
+
+            if (response.isSuccessful()) {
+                System.out.println(response.code());
+                return response.body();
+            } else {
+                System.out.println(response.code());
+                return null;
             }
-            @Override public void onFailure(Call<String> call, Throwable t) {
-                System.out.println("エラー: " + t.getMessage());
-            }
-        });
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+//        call.enqueue(new Callback<String>() {
+//            @Override
+//            public void onResponse(Call<String> call, Response<String> response) {
+//                if (response.isSuccessful()) {
+//                    icon.setValue(response.body());
+//                    System.out.println(response.code());
+//                } else {
+//                    System.out.println(response.code());
+//                }
+//            }
+//            @Override public void onFailure(Call<String> call, Throwable t) {
+//                System.out.println("エラー: " + t.getMessage());
+//            }
+//        });
     }
 
     public void updateIcon(String id, String newIcon, String token) {
diff --git a/app/src/main/java/com/example/tampopo_client/views/ChatActivity.java b/app/src/main/java/com/example/tampopo_client/views/ChatActivity.java
index ab85b1c..b7dc775 100644
--- a/app/src/main/java/com/example/tampopo_client/views/ChatActivity.java
+++ b/app/src/main/java/com/example/tampopo_client/views/ChatActivity.java
@@ -2,6 +2,7 @@
 
 import android.content.Intent;
 import android.os.Bundle;
+import android.util.Log;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
@@ -29,6 +30,8 @@
 
   Tampopo tampopo;
 
+
+
   @Override
   protected void onCreate(Bundle savedInstanceState) {
     tampopo = (Tampopo)getApplication();
@@ -60,6 +63,30 @@
 //      }
 //    });
 
+    Intent intent = getIntent();
+    String friendId = intent.getStringExtra("friendId");
+    String chatroomId = intent.getStringExtra("chatroomId");
+
+    Log.d("ChatDebug", "チャット相手ID: " + friendId);
+    Log.d("ChatDebug", "チャットルームID: " + chatroomId);
+
+    String myId = tampopo.getUserId();
+    String token = tampopo.getToken();
+    chatroomViewModel.enterChatroom(myId, friendId, token);
+
+    if (friendId == null || friendId.isEmpty()) {
+      Log.e("ChatDebug","Error: friendIdがnullです");
+    }
+
+    chatroomViewModel.getChatroomIdLiveData().observe(this, id -> {
+      if (id != null) {
+        tampopo.setChatroomId(id);
+        System.out.println("チャットルーム作成完了！ ID: " + id);
+      } else {
+        System.out.println("チャットルーム作成に失敗しました");
+      }
+    });
+
 
     //メッセージ送信
     sendButton.setOnClickListener(new OnClickListener() { //sendButtonがクリックされたときの処理
diff --git a/app/src/main/java/com/example/tampopo_client/views/MainActivity.java b/app/src/main/java/com/example/tampopo_client/views/MainActivity.java
index 4ae89c3..f2fa84a 100644
--- a/app/src/main/java/com/example/tampopo_client/views/MainActivity.java
+++ b/app/src/main/java/com/example/tampopo_client/views/MainActivity.java
@@ -46,6 +46,7 @@
 import com.example.tampopo_client.viewmodels.ChatViewModel;
 import com.example.tampopo_client.viewmodels.NotificationListener;
 
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -63,11 +64,13 @@
     private Map<String, FriendIconView> userViews = new HashMap<>();
 
     ActivityViewModel activityViewModel;
-    private UserViewModel userViewModel;
+    UserViewModel userViewModel;
     Tampopo tampopo;
 
     //追加しました！
     private ChatViewModel chatViewModel;
+    private final List<String> recentUpdatedFriends = new ArrayList<>(); // 最新6人
+
 
 
     @Override
@@ -133,6 +136,7 @@
 //        });
 
         MutableLiveData<List<String>> friendsLiveData = activityViewModel.getFriendUserIdsLiveData();
+
         friendsLiveData.observe(this, new Observer<List<String>>() {
             @Override
             public void onChanged(List<String> friends) {
@@ -144,6 +148,8 @@
         for (String friendId: userViews.keySet()) {
             final String updateFriendId = friendId;
             MutableLiveData<List<Activity>> activitiesLiveData = activityViewModel.getActivitiesLiveDataFromUserId(updateFriendId);
+            //MutableLiveData<List<Activity>> activitiesLiveData = activityViewModel.getActivitiesLiveDataFromUserId(updateFriendId);
+
             FriendIconView friendView = userViews.get(friendId);
             if(friendView == null) continue;
             //activitiesLiveData.observeForever(friendView);
@@ -157,6 +163,39 @@
                         Activity latest = activities.get(activities.size() - 1);
                         userView.setComment(latest.getText());
                     }
+                    //アイコンとニックネーム情報をとってくる
+                    new Thread(() -> {
+                        String nickname = userViewModel.getNickname(updateFriendId);
+                        String iconUrl = userViewModel.getIcon(updateFriendId);
+
+                        runOnUiThread(() -> {
+                            if (nickname != null && !nickname.isEmpty()) {
+                                userView.setNickname(nickname);
+                            } else {
+                                userView.setNickname(updateFriendId);
+                            }
+
+//                            if (iconUrl != null && !iconUrl.isEmpty()) {
+//                                userView.setIconUrl(iconUrl);
+//                            } else {
+//                                userView.setIconUrl("http://nitta-lab-www.is.konan-u.ac.jp/tampopo/images/default_icon.png");
+//                            }
+                        });
+                    }).start();
+                    //フレンドの位置決め
+                    // 最新更新フレンドをリストに追加（最大6人保持）
+                    synchronized (recentUpdatedFriends) {
+                        // すでに存在する場合は削除して再追加（重複防止）
+                        recentUpdatedFriends.remove(updateFriendId);
+                        // 先頭に追加（最近更新した人ほど前）
+                        recentUpdatedFriends.add(0, updateFriendId);
+
+                        // 6人を超えたら古いものを削除
+                        if (recentUpdatedFriends.size() > 6) {
+                            recentUpdatedFriends.remove(recentUpdatedFriends.size() - 1);
+                        }
+                    }
+
                 }
             });
             //activitiesLiveData.observe(this, userViews.get(friendId));
@@ -540,7 +579,7 @@
         // 通知を受信したときにダイアログを表示
         runOnUiThread(() -> showChatNotification("user02"));
         // アイコンを赤枠に
-        runOnUiThread(() -> highlightUserIcon("user01"));
+        //runOnUiThread(() -> highlightUserIcon("user01"));
     }
 //    @Override
 //    protected void onNewIntent(Intent intent) {