diff --git a/src/Map.java b/src/Map.java
index f7017c1..29e76ff 100644
--- a/src/Map.java
+++ b/src/Map.java
@@ -3,6 +3,8 @@
 	private B b;
 	private C c;
 	private A a;
+	private Presenter presenter;
+	
 	public Map() {
 		this.d = new D();
 		this.b = new B(d);
@@ -16,9 +18,8 @@
 		return b.getValue();
 	}
 	public void updateGPS(double lat2, double long2) {
-		this.b.updateGPS(lat2, long2);
-		this.a.updateGPS(lat2, long2);
-	}
+        this.presenter.updateGPS(lat2, long2);
+    }
 	public double getMapLatitude() {
 		return c.getValue();
 	}
diff --git a/src/Presenter.java b/src/Presenter.java
new file mode 100644
index 0000000..3bb9e82
--- /dev/null
+++ b/src/Presenter.java
@@ -0,0 +1,30 @@
+// Presenter �N���X�̒lj�
+public class Presenter {
+    private boolean autoUpdateEnabled = true; // �f�t�H���g�͎����X�VON
+    private C mapLatitude;
+    private D mapLongitude;
+    
+    public Presenter(C mapLatitude, D mapLongitude) {
+        this.mapLatitude = mapLatitude;
+        this.mapLongitude = mapLongitude;
+    }
+
+    public void setAutoUpdateEnabled(boolean enabled) {
+        this.autoUpdateEnabled = enabled;
+    }
+    
+    public void updateGPS(double lat, double lon) {
+        // �ܓx�o�x�I�u�W�F�N�g�͏�ɍX�V
+        // �n�}�̒��S�ʒu�͎����X�V��ON�̏ꍇ�̂ݍX�V
+        if (autoUpdateEnabled) {
+            mapLatitude.updateLatitude(lat);
+            mapLongitude.updateLongitude(lon);
+        }
+    }
+
+    // ���[�U�[���蓮�ōX�V���s�������ꍇ�Ɏg�����\�b�h
+    public void manualUpdate(double lat, double lon) {
+        mapLatitude.updateLatitude(lat);
+        mapLongitude.updateLongitude(lon);
+    }
+}
\ No newline at end of file