diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/MainActivity.java b/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/MainActivity.java
index 0e45aff..0649149 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/MainActivity.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/MainActivity.java
@@ -2,9 +2,11 @@
 
 import android.os.Bundle;
 import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentManager;
 import android.support.v7.app.AppCompatActivity;
 
 import org.ntlab.radishforandroidstudio.R;
+import org.ntlab.radishforandroidstudio.cactusClient.views.PlayerFragment;
 import org.ntlab.radishforandroidstudio.cactusClient.views.StartFragment;
 
 
@@ -31,5 +33,24 @@
         setContentView(R.layout.activity_main);
     }
 
-
+    @Override
+    public void onBackPressed() {
+        FragmentManager manager = getSupportFragmentManager();
+        if (manager == null) {
+            super.onBackPressed();
+            return;
+        }
+        Fragment fragment = manager.findFragmentById(R.id.fragment_place);
+        if (fragment == null) {
+            super.onBackPressed();
+            return;
+        }
+        if (fragment instanceof PlayerFragment) {
+            manager.beginTransaction().remove(fragment).commit();
+            manager.popBackStack();
+//            super.onBackPressed();
+            return;
+        }
+        super.onBackPressed();
+    }
 }
diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/models/OtherPlayerCharactersModel.java b/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/models/OtherPlayerCharactersModel.java
index 300f488..186d4d7 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/models/OtherPlayerCharactersModel.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/models/OtherPlayerCharactersModel.java
@@ -78,7 +78,6 @@
             Player player = entry.getValue();
 
             // 自分自身は無視する
-            System.out.println(entry.getKey() + ", " + playerId);
             if (entry.getKey().equals(playerId)) continue;
 
             // 情報の取得
diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/models/OwnPlayer.java b/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/models/OwnPlayer.java
index 6ce0c2d..8004c06 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/models/OwnPlayer.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/models/OwnPlayer.java
@@ -124,7 +124,7 @@
             player.setAngle(q);
 
             JSON json = new JSON();
-            con.addFormParam("characterID", json.encode(player.getCharacterID()));
+            con.addFormParam("characterID", player.getCharacterID());
             con.addFormParam("cameraState", json.encode(player.getCameraState()));
             con.addFormParam("position", json.encode(player.getPosition()));
             con.addFormParam("animationClassToStart", json.encode(player.getEmoteState()));
@@ -142,4 +142,10 @@
     public void onResponse(String response) {
 
     }
+
+    public void logout() {
+        con = new CharacterConnection(playerId);
+        con.setCallBack(this);
+        con.doDelete();
+    }
 }
diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/views/PlayerFragment.java b/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/views/PlayerFragment.java
index 57a8743..11cd8b5 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/views/PlayerFragment.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/views/PlayerFragment.java
@@ -101,6 +101,7 @@
     @Override
     protected void progress(long interval) {
         super.progress(interval);
+        System.out.println("update");
     }
 
 
@@ -121,5 +122,16 @@
         pad = (RWTPad) f.findViewById(org.ntlab.radishforandroidstudio.R.id.pad);
         pad.addListener(player);
     }
+
+    public void logout() {
+        player.logout();
+    }
+
+    @Override
+    public void onDestroy() {
+        System.out.println("destroy");
+        logout();
+        super.onDestroy();
+    }
 }