diff --git a/src/main/java/cactusServer/entities/Entity3D.java b/src/main/java/cactusServer/entities/Entity3D.java
new file mode 100644
index 0000000..527a279
--- /dev/null
+++ b/src/main/java/cactusServer/entities/Entity3D.java
@@ -0,0 +1,23 @@
+package cactusServer.entities;
+
+import framework.model3D.Placeable;
+
+public abstract class Entity3D extends Entity {
+	private Placeable placeable;
+
+	protected Entity3D() {
+		// JSONDecode���̌Ăяo���p
+	}
+	
+	public Entity3D(Placeable placeable) {
+		setPlaceable(placeable);
+	}
+	
+	public Placeable getPlaceable() {
+		return placeable;
+	}
+
+	public void setPlaceable(Placeable placeable) {
+		this.placeable = placeable;
+	}
+}
diff --git a/src/main/java/cactusServer/entities/Instance.java b/src/main/java/cactusServer/entities/Instance.java
index e8860ad..8c5068b 100644
--- a/src/main/java/cactusServer/entities/Instance.java
+++ b/src/main/java/cactusServer/entities/Instance.java
@@ -13,6 +13,7 @@
 import cactusServer.utils.RandomStringGenerator;
 import cactusServer.entities.Character;
 import framework.model3D.Position3D;
+import framework.model3D.Universe;
 import framework.physics.AngularVelocity3D;
 import framework.physics.Velocity3D;
 import net.arnx.jsonic.JSONHint;
@@ -27,6 +28,7 @@
 	private String name;
 	private State state;
 	private String stage;
+	private Universe universe;
 	private HashMap<String, Area> areaMap = new HashMap<>();
 	private HashMap<String, Object> objMap = new HashMap<>();
 	private HashMap<String, Character> characterMap = new HashMap<>();
@@ -47,6 +49,7 @@
 		setName(name);
 		setState(state);
 		setStage(stageModel);
+		universe = new Universe();
 	}
 
 	public String getName() {
diff --git a/src/main/java/cactusServer/entities/Player.java b/src/main/java/cactusServer/entities/Player.java
index 4d1ce8e..fa70f8c 100644
--- a/src/main/java/cactusServer/entities/Player.java
+++ b/src/main/java/cactusServer/entities/Player.java
@@ -4,7 +4,7 @@
 import framework.model3D.Position3D;
 import net.arnx.jsonic.JSONHint;
 
-public class Player extends Entity {
+public class Player extends Entity3D {
 	private String instanceURI;
 	private String characterURI;
 	private String areaURI;