diff --git a/RadishFrameworkLight/src/fight3D/Fight.java b/RadishFrameworkLight/src/fight3D/Fight.java
index f992208..9f10dd9 100644
--- a/RadishFrameworkLight/src/fight3D/Fight.java
+++ b/RadishFrameworkLight/src/fight3D/Fight.java
@@ -80,7 +80,7 @@
 		universe.placeAsAReceiver(stageGround);
 		RWTCanvas3D c = (RWTCanvas3D) fightListener;
 		s.setBackgroundSize(new Dimension(c.getWidth(), c.getHeight()));
-		universe.place(s.getBackground());
+		universe.placeUnremovable(s.getBackground());
 
 		// �L�����N�^�̒lj��A����̒lj�
 		for (int i = 0; i < selectedCharacterArray.length; i++) {
diff --git a/RadishFrameworkLight/src/fight3D/Player.java b/RadishFrameworkLight/src/fight3D/Player.java
index 4f02a65..3be6203 100644
--- a/RadishFrameworkLight/src/fight3D/Player.java
+++ b/RadishFrameworkLight/src/fight3D/Player.java
@@ -98,13 +98,13 @@
 		universe.placeAsAnOcculuder(this);
 		// �e�̕\���̏���
 		if (!character.hasAttackingPart()) {
-			universe.place((Weapon) normalAttack);
+			universe.placeUnremovable((Weapon) normalAttack);
 		}
 		if (!character.hasUpperAttackingPart()) {
-			universe.place((Weapon) upperAttack);
+			universe.placeUnremovable((Weapon) upperAttack);
 		}
 		if (!character.hasJumpAttackingPart()) {
-			universe.place((Weapon) jumpAttack);
+			universe.placeUnremovable((Weapon) jumpAttack);
 		}
 		
 		// �K�[�h�\���̏���
@@ -125,7 +125,7 @@
 		guardScale.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
 		guardPos.addChild(guardScale);
 		guardScale.addChild(guardSphere);
-		universe.place(guardPos);
+		universe.placeUnremovable(guardPos);
 		setGuardInvisible();
 	}
 
diff --git a/RadishFrameworkLight/src/framework/model3D/Universe.java b/RadishFrameworkLight/src/framework/model3D/Universe.java
index e52c392..267dad8 100644
--- a/RadishFrameworkLight/src/framework/model3D/Universe.java
+++ b/RadishFrameworkLight/src/framework/model3D/Universe.java
@@ -88,7 +88,7 @@
 	 * �I�u�W�F�N�g��z�u����
 	 * @param obj �z�u����I�u�W�F�N�g
 	 */
-	public void place(Node obj) {
+	public void placeUnremovable(Node obj) {
 		if (!root.isCompiled()) {
 			root.addChild(obj);
 		} else {
@@ -100,12 +100,12 @@
 	 * �I�u�W�F�N�g��z�u����
 	 * @param obj �z�u����I�u�W�F�N�g
 	 */
-	public void place(Placeable obj) {
+	public void placeUnremovable(Placeable obj) {
 		BaseObject3D body = obj.getBody();
 		if (body.isReflectionMappingApplied() || body.isBumpMappingApplied()) {
 			extraObjects.add(body);
 		} else {
-			place(obj.getTransformGroupToPlace());
+			placeUnremovable(obj.getTransformGroupToPlace());
 		}
 	}
 	
@@ -113,7 +113,7 @@
 	 * ��Ŏ�菜����悤�ɃI�u�W�F�N�g��z�u����
 	 * @param obj �z�u����I�u�W�F�N�g
 	 */
-	public void placeDisplacable(Node obj) {
+	public void place(Node obj) {
 		BranchGroup objRoot;
 		if (obj.getParent() != null 
 				&& obj.getParent() instanceof BranchGroup) {
@@ -130,12 +130,12 @@
 	 * ��Ŏ�菜����悤�ɃI�u�W�F�N�g��z�u����
 	 * @param obj �z�u����I�u�W�F�N�g
 	 */
-	public void placeDisplacable(Placeable obj) {
+	public void place(Placeable obj) {
 		BaseObject3D body = obj.getBody();
 		if (body != null && (body.isReflectionMappingApplied() || body.isBumpMappingApplied())) {
 			extraObjects.add(body);
 		} else {
-			placeDisplacable(obj.getTransformGroupToPlace());
+			place(obj.getTransformGroupToPlace());
 		}
 	}
 	
@@ -148,7 +148,7 @@
 		if (body instanceof Object3D) {
 			addShadowOcculuder((Object3D)body);
 		} else {
-			place(obj);
+			placeUnremovable(obj);
 		}
 	}
 	
diff --git a/RadishFrameworkLight/src/framework/test/TestAnimation.java b/RadishFrameworkLight/src/framework/test/TestAnimation.java
index 30b8627..b4d23b9 100644
--- a/RadishFrameworkLight/src/framework/test/TestAnimation.java
+++ b/RadishFrameworkLight/src/framework/test/TestAnimation.java
@@ -142,7 +142,7 @@
 		light.setInfluencingBounds(new BoundingSphere(new Point3d(), 500.0));
 		universe.placeLight(light);
 
-		universe.place(obj);
+		universe.placeUnremovable(obj);
 		universe.compile();
 
 		frame.setSize(720, 480);
diff --git a/RadishFrameworkLight/src/framework/test/TestBrick.java b/RadishFrameworkLight/src/framework/test/TestBrick.java
index 09a591a..83768d3 100644
--- a/RadishFrameworkLight/src/framework/test/TestBrick.java
+++ b/RadishFrameworkLight/src/framework/test/TestBrick.java
@@ -123,7 +123,7 @@
 ////					Quaternion3D q = new Quaternion3D(0.0, 0, 1.0, 0.7);
 ////					solid.apply(q, false);
 //					solid.apply(new AngularVelocity3D(-0.1, 0.0, -0.2), false);
-					universe.place(solid);
+					universe.placeUnremovable(solid);
 			
 					camera.addTarget(solid);
 			
@@ -132,7 +132,7 @@
 			}
 		}
 
-		universe.place(stageGround);
+		universe.placeUnremovable(stageGround);
 
 		// �\��
 		universe.compile();
diff --git a/RadishFrameworkLight/src/framework/test/TestDice.java b/RadishFrameworkLight/src/framework/test/TestDice.java
index 504eeed..7a852b6 100644
--- a/RadishFrameworkLight/src/framework/test/TestDice.java
+++ b/RadishFrameworkLight/src/framework/test/TestDice.java
@@ -123,7 +123,7 @@
 //					Quaternion3D q = new Quaternion3D(0.0, 0, 1.0, 0.7);
 //					solid.apply(q, false);
 					solid.apply(new AngularVelocity3D(-0.2, 0.0, -0.4), false);
-					universe.place(solid);
+					universe.placeUnremovable(solid);
 			
 					camera.addTarget(solid);
 			
@@ -132,7 +132,7 @@
 			}
 		}
 
-		universe.place(stageGround);
+		universe.placeUnremovable(stageGround);
 
 		// �\��
 		universe.compile();
diff --git a/RadishFrameworkLight/src/framework/test/TestDomino.java b/RadishFrameworkLight/src/framework/test/TestDomino.java
index 8a84c18..7cf95c9 100644
--- a/RadishFrameworkLight/src/framework/test/TestDomino.java
+++ b/RadishFrameworkLight/src/framework/test/TestDomino.java
@@ -78,15 +78,15 @@
 		solid9.scale(0.2, 2.0, 1.0);
 
 		solid2.apply(new AngularVelocity3D(0.0, 0.0, 1.0), false);
-		universe.place(solid);
-		universe.place(solid2);
-		universe.place(solid3);
-		universe.place(solid4);
-		universe.place(solid5);
-		universe.place(solid6);
-		universe.place(solid7);
-		universe.place(solid8);
-		universe.place(solid9);
+		universe.placeUnremovable(solid);
+		universe.placeUnremovable(solid2);
+		universe.placeUnremovable(solid3);
+		universe.placeUnremovable(solid4);
+		universe.placeUnremovable(solid5);
+		universe.placeUnremovable(solid6);
+		universe.placeUnremovable(solid7);
+		universe.placeUnremovable(solid8);
+		universe.placeUnremovable(solid9);
 
 		// ���C�g�̐ݒ�
 		DirectionalLight light = new DirectionalLight(true, new Color3f(1.0f,
@@ -101,7 +101,7 @@
 //		Object3D stageObject = ModelFactory.loadModel("data\\floor4.3ds").createObject();
 		Object3D stageObject = ModelFactory.loadModel("data\\stage3\\stage3.wrl").createObject();
 		Ground stageGround = new Ground(stageObject);
-		universe.place(stageGround);
+		universe.placeUnremovable(stageGround);
 
 		// �J�����̐ݒ�
 		Camera3D camera = new Camera3D(universe);
diff --git a/RadishFrameworkLight/src/framework/test/TestMathmatics.java b/RadishFrameworkLight/src/framework/test/TestMathmatics.java
index b582489..8bd0150 100644
--- a/RadishFrameworkLight/src/framework/test/TestMathmatics.java
+++ b/RadishFrameworkLight/src/framework/test/TestMathmatics.java
@@ -45,15 +45,15 @@
 		DirectionalLight light = new DirectionalLight(true, new Color3f(1.0f,
 				1.0f, 1.0f), new Vector3f(0.0f, 0.0f, -1.0f));
 		light.setInfluencingBounds(new BoundingSphere(new Point3d(), 500.0));
-		universe.place(light);
+		universe.placeUnremovable(light);
 
 		// obj1.setPosition(new Position3D(3.0,0.0,0.0));
 		// obj2.setPosition(new Position3D(-3.0,0.0,0.0));
 		Solid3D sol1 = new Solid3D(obj1);
 		Solid3D sol2 = new Solid3D(obj2);
 		sol1.apply(new Position3D(1.5, 1.5, 0.0), false);
-		universe.place(sol1);
-		universe.place(sol2);
+		universe.placeUnremovable(sol1);
+		universe.placeUnremovable(sol2);
 
 		Camera3D camera = new Camera3D(universe);
 		camera.setViewPoint(new Position3D(0.0, 0.0, 10.0));
diff --git a/RadishFrameworkLight/src/framework/test/TestMathmatics2.java b/RadishFrameworkLight/src/framework/test/TestMathmatics2.java
index d255428..abb1b2f 100644
--- a/RadishFrameworkLight/src/framework/test/TestMathmatics2.java
+++ b/RadishFrameworkLight/src/framework/test/TestMathmatics2.java
@@ -59,7 +59,7 @@
 		DirectionalLight light = new DirectionalLight(true, new Color3f(1.0f,
 				1.0f, 1.0f), new Vector3f(0.0f, 0.0f, -1.0f));
 		light.setInfluencingBounds(new BoundingSphere(new Point3d(), 500.0));
-		universe.place(light);
+		universe.placeUnremovable(light);
 
 		// obj1.setPosition(new Position3D(3.0,0.0,0.0));
 		// obj2.setPosition(new Position3D(-3.0,0.0,0.0));
@@ -69,8 +69,8 @@
 		sol1.apply(new Position3D(-2.0, 0.0, 0.0), false);
 		sol2.apply(new Position3D(0.0, 0.0, 0.0), false);
 		stageGround = new Ground(sol2);
-		universe.place(sol1);
-		universe.place(stageGround);
+		universe.placeUnremovable(sol1);
+		universe.placeUnremovable(stageGround);
 
 		
 		Camera3D camera = new Camera3D(universe);
diff --git a/RadishFrameworkLight/src/framework/test/TestModel.java b/RadishFrameworkLight/src/framework/test/TestModel.java
index ed10dbb..d726582 100644
--- a/RadishFrameworkLight/src/framework/test/TestModel.java
+++ b/RadishFrameworkLight/src/framework/test/TestModel.java
@@ -78,10 +78,10 @@
                 new Color3f(1.0f, 1.0f, 1.0f),
                 new Vector3f(0.0f, 0.0f, -1.0f));
         light.setInfluencingBounds(new BoundingSphere(new Point3d(), 500.0));
-        universe.place(light);
+        universe.placeUnremovable(light);
         
 //		SimpleUniverse universe = new SimpleUniverse(testModel.c);
-        universe.place(obj);
+        universe.placeUnremovable(obj);
         universe.compile();
         
 		Camera3D camera = new Camera3D(universe);
diff --git a/RadishFrameworkLight/src/framework/test/TestMultiView.java b/RadishFrameworkLight/src/framework/test/TestMultiView.java
index 6e7babb..0b3d6f7 100644
--- a/RadishFrameworkLight/src/framework/test/TestMultiView.java
+++ b/RadishFrameworkLight/src/framework/test/TestMultiView.java
@@ -58,12 +58,12 @@
 		Object3D pochaBody1 = pochaModel.createObject();
 		pocha1 = new OvergroundActor(pochaBody1, pochaAnimation);
 		pocha1.body.apply(new Position3D(3.0, 0.0, 0.0), false);
-		universe.place(pocha1);
+		universe.placeUnremovable(pocha1);
 
 		Object3D pochaBody2 = pochaModel.createObject();
 		pocha2 = new OvergroundActor(pochaBody2, pochaAnimation);
 		pocha2.body.apply(new Position3D(-3.0, 0.0, 0.0), false);
-		universe.place(pocha2);
+		universe.placeUnremovable(pocha2);
 		
 		camera1.setViewPoint(pocha1.getPosition().add(0.0, 0.5, 0.0));
 		camera1.addTarget(pocha1);
@@ -75,7 +75,7 @@
 		
 		Object3D stageObj = ModelFactory.loadModel("data\\stage3\\stage3.wrl").createObject();
 		stage = new Ground(stageObj);
-		universe.place(stage);
+		universe.placeUnremovable(stage);
 	}
 
 	@Override
diff --git a/RadishFrameworkLight/src/framework/test/TestObject.java b/RadishFrameworkLight/src/framework/test/TestObject.java
index 1ba9be2..19be087 100644
--- a/RadishFrameworkLight/src/framework/test/TestObject.java
+++ b/RadishFrameworkLight/src/framework/test/TestObject.java
@@ -80,12 +80,12 @@
 		ap2.setColoringAttributes(new ColoringAttributes(0.5f, 0.5f, 0.5f, ColoringAttributes.NICEST));
 		BaseObject3D stageObject = new BaseObject3D(groundGeometry, ap2);
 		Ground stageGround = new Ground(stageObject);
-		universe.place(stageGround);
+		universe.placeUnremovable(stageGround);
 		
 		// �I�u�W�F�N�g�̐ݒ�
 		Model3D model = ModelFactory.loadModel("data\\cubeBlue.3ds");	// 3D���f���t�@�C���̓ǂݍ���
 		object = model.createObject();		// �I�u�W�F�N�g��1����
-		universe.place(object);				// ���E�ɔz�u
+		universe.placeUnremovable(object);				// ���E�ɔz�u
 		
 		// �J�����̐ݒ�
 		Camera3D camera = new Camera3D(universe);
diff --git a/RadishFrameworkLight/src/framework/test/TestPhysics.java b/RadishFrameworkLight/src/framework/test/TestPhysics.java
index e51a020..3636455 100644
--- a/RadishFrameworkLight/src/framework/test/TestPhysics.java
+++ b/RadishFrameworkLight/src/framework/test/TestPhysics.java
@@ -52,7 +52,7 @@
 		light.setInfluencingBounds(new BoundingSphere(new Point3d(), 500.0));
 		universe.placeLight(light);
 
-		universe.place(obj);
+		universe.placeUnremovable(obj);
 
 		frame.setSize(720, 480);
 		frame.setVisible(true);
@@ -60,11 +60,11 @@
 		// �v���C���[�̐ݒ�
 		Character c = CharacterManager.getInstance().getCharacter(0);
 		Player p = new Player(c);
-		universe.place(p);
+		universe.placeUnremovable(p);
 
 		// ��ѓ���̐ݒ�
 		Weapon w = new Weapon(c.getWeaponModel(), p, 0);
-		universe.place(w);
+		universe.placeUnremovable(w);
 		w.body.apply(new Velocity3D(-5.0, 0.0, 0.0), false);
 		w.body.apply(new Quaternion3D(), false);
 
@@ -72,7 +72,7 @@
 		Stage stage = StageManager.getInstance().getStage(0);
 		Object3D stageObject = stage.getModel().createObject();
 		Ground stageGround = new Ground(stageObject);
-		universe.place(stageGround);
+		universe.placeUnremovable(stageGround);
 
 		// �J�����̐ݒ�
 		Camera3D camera = new Camera3D(universe);
diff --git a/RadishFrameworkLight/src/framework/test/TestPhysics2.java b/RadishFrameworkLight/src/framework/test/TestPhysics2.java
index 02fc3ab..e3b801f 100644
--- a/RadishFrameworkLight/src/framework/test/TestPhysics2.java
+++ b/RadishFrameworkLight/src/framework/test/TestPhysics2.java
@@ -52,8 +52,8 @@
 		solid.apply(new Position3D(0.0, 0.0, 0.0), false);
 		Solid3D solid2 = new Solid3D(obj2);
 		solid2.apply(new Position3D(0.7, 4.0, 0.0), false);
-		universe.place(solid);
-		universe.place(solid2);
+		universe.placeUnremovable(solid);
+		universe.placeUnremovable(solid2);
 
 		// ���C�g�̐ݒ�
 		DirectionalLight light = new DirectionalLight(true, new Color3f(1.0f,
@@ -67,7 +67,7 @@
 		// �X�e�[�W�̐ݒ�
 		Object3D stageObject = ModelFactory.loadModel("data//floor4.3ds").createObject();
 		Ground stageGround = new Ground(stageObject);
-		universe.place(stageGround);
+		universe.placeUnremovable(stageGround);
 
 		// �J�����̐ݒ�
 		Camera3D camera = new Camera3D(universe);
diff --git a/RadishFrameworkLight/src/framework/test/TestShadow.java b/RadishFrameworkLight/src/framework/test/TestShadow.java
index 64eedac..8f34142 100644
--- a/RadishFrameworkLight/src/framework/test/TestShadow.java
+++ b/RadishFrameworkLight/src/framework/test/TestShadow.java
@@ -86,7 +86,7 @@
 		quadArray0.setNormal(2, new Vector3f(0.0f, 1.0f, 0.0f));
 		quadArray0.setNormal(3, new Vector3f(0.0f, 1.0f, 0.0f));
 		Shape3D box0 = new Shape3D(quadArray0, ap0);
-		universe.place(box0);
+		universe.placeUnremovable(box0);
 
 		// �V���h�E�{�����[���\�ʁi�X�e���V���o�b�t�@��+1�j
 		Appearance ap1 = new Appearance();
@@ -112,7 +112,7 @@
 		ta1.setTransparency(1.0f);
 		ap1.setTransparencyAttributes(ta1);
 		Cylinder cyl1 = new Cylinder(1.0f, 10.0f, ap1);
-		universe.place(cyl1);
+		universe.placeUnremovable(cyl1);
 		
 		// �V���h�E�{�����[�����ʁi�X�e���V���o�b�t�@��-1�j
 		Appearance ap2 = new Appearance();
@@ -138,7 +138,7 @@
 		ta2.setTransparency(1.0f);
 		ap2.setTransparencyAttributes(ta2);
 		Cylinder cyl2 = new Cylinder(1.0f, 10.0f, ap2);
-		universe.place(cyl2);
+		universe.placeUnremovable(cyl2);
 
 		// �e�̕������������n��
 		Appearance ap3 = new Appearance();
@@ -166,7 +166,7 @@
 				new Point3d(10.0, 0.0, 10.0), 
 				new Point3d(10.0, 0.0, -10.0)});
 		Shape3D box1 = new Shape3D(quadArray1, ap3);
-		universe.place(box1);
+		universe.placeUnremovable(box1);
 
 		frame.setSize(720, 480);
 		frame.setVisible(true);
diff --git a/RadishFrameworkLight/src/framework/view3D/Camera3D.java b/RadishFrameworkLight/src/framework/view3D/Camera3D.java
index 3eb68d3..b844e20 100644
--- a/RadishFrameworkLight/src/framework/view3D/Camera3D.java
+++ b/RadishFrameworkLight/src/framework/view3D/Camera3D.java
@@ -62,7 +62,7 @@
 		viewPlatformTransform.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
 		viewPlatformTransform.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
 		viewPlatformTransform.addChild(viewPlatform);		
-		universe.place(viewPlatformTransform);
+		universe.placeUnremovable(viewPlatformTransform);
 	}
 	
 	public Universe getUniverse() {
diff --git a/RadishFrameworkLight/src/sample/SampleGame.java b/RadishFrameworkLight/src/sample/SampleGame.java
index 0bafb78..0d89276 100644
--- a/RadishFrameworkLight/src/sample/SampleGame.java
+++ b/RadishFrameworkLight/src/sample/SampleGame.java
@@ -41,11 +41,11 @@
 		Animation3D pochaAnimation = AnimationFactory.loadAnimation("data\\pocha\\walk.wrl");
 		pocha = new OvergroundActor(pochaBody, pochaAnimation);
 		pocha.setPosition(new Position3D(3.87, 0.0, 24.0));
-		universe.place(pocha);
+		universe.placeUnremovable(pocha);
 		
 		Object3D stageObj = ModelFactory.loadModel("data\\konan\\konan3.wrl").createObject();
 		stage = new Ground(stageObj);
-		universe.place(stage);
+		universe.placeUnremovable(stage);
 		
 		camera.setViewPoint(pocha.getPosition().add(0.0, 1.5, 0.0));
 		camera.setViewLine(pocha.getDirection());
diff --git a/RadishFrameworkLight/src/template/RPG/TemplateScenarioGame.java b/RadishFrameworkLight/src/template/RPG/TemplateScenarioGame.java
index d26bad8..6bb3d92 100644
--- a/RadishFrameworkLight/src/template/RPG/TemplateScenarioGame.java
+++ b/RadishFrameworkLight/src/template/RPG/TemplateScenarioGame.java
@@ -72,17 +72,17 @@
 		Animation3D pochaAnimation = AnimationFactory.loadAnimation("data\\pocha\\walk.wrl");
 		player = new Player(pochaBody, pochaAnimation);
 		player.setPosition(new Position3D(-77.68, 0.0, -1.9));
-		universe.place(player);
+		universe.placeUnremovable(player);
 		
 		// ���l��z�u�i�L�����N�^�[�͗��p�j
 		king = new Player(pochaBody, pochaAnimation);
 		king.setPosition(new Position3D(3.87, -11.92, 21.39));
-		universe.place(king);
+		universe.placeUnremovable(king);
 
 		// �X�e�[�W��3D�f�[�^��ǂݍ��ݔz�u����
 		Object3D stageObj = ModelFactory.loadModel("data\\konan\\konan3.wrl").createObject();
 		stage = new Ground(stageObj);
-		universe.place(stage);
+		universe.placeUnremovable(stage);
 		
 		// �J�����̐ݒ�i���Վ��_�ɂ���j
 		camera.addTarget(player);
@@ -114,7 +114,7 @@
 		Object3D enemy = ModelFactory.loadModel("data\\pocha\\pocha.wrl").createObject();
 		enemy.apply(new Position3D(0.0, 0.0, 0.0), false);
 		enemy.apply(new Quaternion3D(0.0, 1.0, 0.0, Math.PI / 2.0), false);
-		universe.place(enemy);
+		universe.placeUnremovable(enemy);
 		
 		// �J�����̐ݒ�i�����_�ɂ���j
 		camera.addTarget(enemy.getPosition3D().add(0.0, 1.0, 0.0));
diff --git a/RadishFrameworkLight/src/template/racing/TemplateRacing.java b/RadishFrameworkLight/src/template/racing/TemplateRacing.java
index 533970e..7f40b02 100644
--- a/RadishFrameworkLight/src/template/racing/TemplateRacing.java
+++ b/RadishFrameworkLight/src/template/racing/TemplateRacing.java
@@ -74,12 +74,12 @@
 		Object3D carBody1 = carModel.createObject();
 		car1 = new Automobile(new Solid3D(carBody1), null);
 		car1.body.apply(new Position3D(200.0, 3.0, 50.0), false);
-		universe.place(car1);
+		universe.placeUnremovable(car1);
 
 		Object3D carBody2 = carModel.createObject();
 		car2 = new Automobile(new Solid3D(carBody2), null);
 		car2.body.apply(new Position3D(-150.0, 3.0, 50.0), false);
-		universe.place(car2);
+		universe.placeUnremovable(car2);
 
 		camera1.addTarget(car1);
 		camera1.setViewLine(car1.getDirection());
@@ -94,7 +94,7 @@
 		Object3D stageObj =
 		ModelFactory.loadModel("data\\Road\\RoadStage.WRL").createObject();
 		ground = new Ground(stageObj);
-		universe.place(ground);
+		universe.placeUnremovable(ground);
 
 		buildSkyBox(universe);
 	}
diff --git a/RadishFrameworkLight/src/template/shooting/BattleField.java b/RadishFrameworkLight/src/template/shooting/BattleField.java
index f17f390..f416474 100644
--- a/RadishFrameworkLight/src/template/shooting/BattleField.java
+++ b/RadishFrameworkLight/src/template/shooting/BattleField.java
@@ -64,7 +64,7 @@
 	 * @param obj �z�u����I�u�W�F�N�g
 	 */
 	public void place(Node obj) {
-		universe.place(obj);
+		universe.placeUnremovable(obj);
 	}
 
 	/**
@@ -86,7 +86,7 @@
 				geometryGraph = new GeometryGraph(v.getGeometry());
 			}
 		}
-		universe.place(obj);
+		universe.placeUnremovable(obj);
 	}
 	
 	/**
@@ -94,7 +94,7 @@
 	 * @param obj �z�u����I�u�W�F�N�g
 	 */
 	public void placeDisplacable(Node obj) {
-		universe.placeDisplacable(obj);
+		universe.place(obj);
 	}
 	
 	/**
@@ -102,7 +102,7 @@
 	 * @param obj �z�u����I�u�W�F�N�g
 	 */
 	public void placeDisplacable(Placeable obj) {
-		universe.placeDisplacable(obj);
+		universe.place(obj);
 	}
 	
 	/**
@@ -110,7 +110,7 @@
 	 * @param light �lj��������
 	 */
 	public void placeLight(Light light) {
-		universe.place(light);
+		universe.placeUnremovable(light);
 	}
 	
 	/**
@@ -384,7 +384,7 @@
 	 */
 	private void addEnemy(Enemy enemy) {
 		enemies.add(enemy);		
-		universe.placeDisplacable(enemy);
+		universe.place(enemy);
 	}
 	
 	/**
@@ -393,7 +393,7 @@
 	 */
 	private void addPlayersBullet(PlayersBullet playersBullet) {
 		playersBullets.add(playersBullet);
-		universe.placeDisplacable(playersBullet);
+		universe.place(playersBullet);
 	}
 	
 	/**
@@ -402,7 +402,7 @@
 	 */
 	private void addEnemiesBullet(EnemiesBullet enemiesBullet) {
 		enemiesBullets.add(enemiesBullet);		
-		universe.placeDisplacable(enemiesBullet);
+		universe.place(enemiesBullet);
 	}
 
 	/**