diff --git a/src/main/java/cactusServer/entities/Instance.java b/src/main/java/cactusServer/entities/Instance.java
index fb2aa1d..d55ed87 100644
--- a/src/main/java/cactusServer/entities/Instance.java
+++ b/src/main/java/cactusServer/entities/Instance.java
@@ -21,6 +21,7 @@
 import cactusServer.entities.Object;
 import cactusServer.entities.Area.Allowed;
 import cactusServer.entities.Object.Attribute;
+import cactusServer.models.StageModelManager;
 import cactusServer.utils.RandomStringGenerator;
 import cactusServer.entities.Character;
 import net.arnx.jsonic.JSONHint;
@@ -48,28 +49,19 @@
 		// JSONDecode���̌Ăяo���p
 	}
 
-	public Instance(String name, State state, int stageID) {
+	public Instance(String name, int stageID) {
 		setName(name);
-		setState(state);
+		setState(Instance.State.AVAILABLE);
 		setStageID(stageID);
 		//initUniverse();
 	}
 
 	private void initUniverse() {
 		universe = new Universe();
-
-		// stageURI�����ɂ��ēǂݍ��ރX�e�[�W�̃t�@�C����(���΃p�X)�����\��
-		String stageFileName = "";
-
 		// �X�e�[�W��3D�f�[�^��ǂݍ��ݔz�u����
-		Object3D stageObj;
-		try {
-			stageObj = ModelFactory.loadModel(stageFileName, null, false, true).createObject();
-			stage = new Ground(stageObj);
-			universe.place(stage);
-		} catch (IOException | ModelFileFormatException e) {
-			e.printStackTrace();
-		}
+		Object3D stageObj = StageModelManager.getInstance().getStage(stageID).createObject();
+		stage = new Ground(stageObj);
+		universe.place(stage);
 	}
 
 	public String getName() {
diff --git a/src/main/java/cactusServer/models/Instances.java b/src/main/java/cactusServer/models/Instances.java
index 8eec861..8dc18ce 100644
--- a/src/main/java/cactusServer/models/Instances.java
+++ b/src/main/java/cactusServer/models/Instances.java
@@ -28,8 +28,10 @@
 
 	private Instances() {
 		//�_�~�[�R�[�h
-		instanceMap.put("test1", new Instance("test1", State.AVAILABLE, 0));
-		instanceMap.put("test2", new Instance("test2", State.AVAILABLE, 1));
+//		instanceMap.put("test1", new Instance("test1", State.AVAILABLE, 0));
+//		instanceMap.put("test2", new Instance("test2", State.AVAILABLE, 1));
+		instanceMap.put("test1", new Instance("test1", 0));
+		instanceMap.put("test2", new Instance("test2", 1));
 	}
 
 	/**
@@ -47,7 +49,8 @@
 	public IDAddressedEntity createInstance(String name, int stageID) {
 		String id = RandomStringGenerator.generateUniqueString(Instance.UNIQUE_ID_LENGTH,
 				RandomStringGenerator.ALPHA_NUMERIC, instanceMap.keySet());
-		Instance instance = new Instance(name, Instance.State.AVAILABLE, stageID);
+		//Instance instance = new Instance(name, Instance.State.AVAILABLE, stageID);
+		Instance instance = new Instance(name, stageID);
 		instanceMap.put(id, instance);
 		return new IDAddressedEntity(id, instance);
 	}
@@ -58,7 +61,8 @@
 	public IDAddressedEntity createInstance(String name, Instance.State state, String stageID) {
 		String id = RandomStringGenerator.generateUniqueString(Instance.UNIQUE_ID_LENGTH,
 				RandomStringGenerator.ALPHA_NUMERIC, instanceMap.keySet());
-		Instance instance = new Instance(name, state, Integer.parseInt(stageID));
+		//Instance instance = new Instance(name, state, Integer.parseInt(stageID));
+		Instance instance = new Instance(name, Integer.parseInt(stageID));
 		instanceMap.put(id, instance);
 		return new IDAddressedEntity(id, instance);
 	}