diff --git a/src/main/java/cactusServer/entities/Player.java b/src/main/java/cactusServer/entities/Player.java
index 703fc56..64738e3 100644
--- a/src/main/java/cactusServer/entities/Player.java
+++ b/src/main/java/cactusServer/entities/Player.java
@@ -10,8 +10,8 @@
 import net.arnx.jsonic.JSONHint;
 
 public class Player extends Entity3D {
-	private String instanceURI;
-	private String characterURI;
+	private String instanceID;
+	private String characterID;
 	private String areaURI;
 	private Position3D position;
 	private Quaternion3D angle;
@@ -24,10 +24,10 @@
 		// JSONDecode���̌Ăяo���p
 	}
 
-	public Player(String instanceURI, String characterURI, CameraState cameraState,
+	public Player(String instanceID, String characterID, CameraState cameraState,
 			EmoteState.EmoteType animationClassToStart) {
-		setInstanceURI(instanceURI);
-		setCharacterURI(characterURI);
+		setInstanceID(instanceID);
+		setCharacterID(characterID);
 		if (cameraState != null) {
 			setCameraState(cameraState);
 		} else {
@@ -38,8 +38,8 @@
 		} else {
 			setEmoteState(new EmoteState());
 		}
-		Character character = getCharacter(characterURI);
-		readCharacterData(character);
+		Character character = getCharacter();
+		readCharacterData();
 		initPlaceable(character.getModelID());
 	}
 
@@ -48,17 +48,17 @@
 		Object3D body = CharacterModelManager.getInstance().getCharacterModel(modelID).createObject();
 		setPlaceable(new OvergroundActor(body, null));
 		// ��������Instance������Universe��placeable��z�u����
-		String[] instanceURISplit = instanceURI.split("/"); // �c�c/instances/{instanceId}
+		String[] instanceURISplit = instanceID.split("/"); // �c�c/instances/{instanceId}
 		String instanceId = instanceURISplit[instanceURISplit.length - 1];
 		Instances.getInstance().getInstance(instanceId).getUniverse().place(this.getPlaceable());
 	}
 
-	public String getInstanceURI() {
-		return instanceURI;
+	public String getInstanceID() {
+		return instanceID;
 	}
 
-	public String getCharacterURI() {
-		return characterURI;
+	public String getCharacterID() {
+		return characterID;
 	}
 
 	public String getAreaURI() {
@@ -81,12 +81,12 @@
 		return emoteState;
 	}
 
-	public void setInstanceURI(String instanceURI) {
-		this.instanceURI = instanceURI;
+	public void setInstanceID(String instanceID) {
+		this.instanceID = instanceID;
 	}
 
-	public void setCharacterURI(String characterURI) {
-		this.characterURI = characterURI;
+	public void setCharacterID(String characterID) {
+		this.characterID = characterID;
 	}
 
 	public void setAreaURI(String areaURI) {
@@ -113,9 +113,9 @@
 		setEmoteState(new EmoteState(animationClassToStart));
 	}
 
-	public Player update(String characterURI, Position3D position, Quaternion3D angle, CameraState cameraState,
+	public Player update(String characterID, Position3D position, Quaternion3D angle, CameraState cameraState,
 			EmoteState.EmoteType animationClassToStart) {
-		setCharacterURI(characterURI);
+		setCharacterID(characterID);
 		setPosition(position);
 		setAngle(angle);
 		setCameraState(cameraState);
@@ -153,37 +153,33 @@
 		emoteState.setEmoteType(animationClassToStart);
 	}
 
-	public void changeCharacter(String characterURI) {
-		writeCharacterData(this.characterURI);
-		readCharacterData(characterURI);
+	public void changeCharacter(String characterID) {
+		writeCharacterData();
+		setCharacterID(characterID);
+		readCharacterData();
 	}
 
 	public void destroy() {
-		writeCharacterData(characterURI);
+		writeCharacterData();
 	}
 
-	private Character getCharacter(String characterURI) {
-		String[] characterURISplit = characterURI.split("/"); // �c�c/instances/{instanceId}/characters/{characterId}
-		int splitSize = characterURISplit.length;
-		String characterId = characterURISplit[splitSize - 1];
-		String instanceId = characterURISplit[splitSize - 3];
-		return Instances.getInstance().getInstance(instanceId).getCharacter(characterId);
+	private Character getCharacter() {
+		return Instances.getInstance().getInstance(instanceID).getCharacter(characterID);
 	}
 
 	private void readCharacterData(Character character) {
 		setPosition(character.getPosition());
 		setAngle(character.getAngle());
 		setAreaURI(character.getAreaURI());
-		setCharacterURI(characterURI);
 	}
 
-	private void readCharacterData(String characterURI) {
-		Character character = getCharacter(characterURI);
+	private void readCharacterData() {
+		Character character = getCharacter();
 		readCharacterData(character);
 	}
 
-	private void writeCharacterData(String characterURI) {
-		Character character = getCharacter(characterURI);
+	private void writeCharacterData() {
+		Character character = getCharacter();
 		character.update(position, angle, areaURI);
 	}
 }