diff --git a/src/main/java/cactusServer/entities/Character.java b/src/main/java/cactusServer/entities/Character.java
index a4d24f0..c1f43c8 100644
--- a/src/main/java/cactusServer/entities/Character.java
+++ b/src/main/java/cactusServer/entities/Character.java
@@ -6,7 +6,7 @@
 import java.util.Map;
 
 import org.ntlab.radishforandroidstudio.framework.model3D.Position3D;
-//import org.ntlab.radishforandroidstudio.framework.model3D.Angle;
+import org.ntlab.radishforandroidstudio.framework.model3D.Quaternion3D;
 
 import cactusServer.models.Instances;
 import cactusServer.utils.RandomStringGenerator;
@@ -17,7 +17,7 @@
 	private String areaURI;
 	private String name;
 	private Position3D position;
-	private Angle angle;
+	private Quaternion3D angle;
 	private String modelID;
 
 	private HashMap<String, Item> itemMap = new HashMap<>();
@@ -28,12 +28,12 @@
 		// JSONDecode���̌Ăяo���p
 	}
 
-	public Character(String instanceId, String accountURI, String name, Position3D position, Angle angle,
+	public Character(String instanceId, String accountURI, String name, Position3D position, Quaternion3D angle,
 			String modelID) {
 		setAccountURI(accountURI);
 		setName(name);
 		setPosition(position);
-		setAngle(angle);
+		setQuaternion3D(angle);
 		setModelID(modelID);
 		initAreaURI(instanceId);
 	}
@@ -50,7 +50,7 @@
 		return position;
 	}
 
-	public Angle getAngle() {
+	public Quaternion3D getQuaternion3D() {
 		return angle;
 	}
 
@@ -84,7 +84,7 @@
 		this.position = position;
 	}
 
-	public void setAngle(Angle angle) {
+	public void setQuaternion3D(Quaternion3D angle) {
 		this.angle = angle;
 	}
 
@@ -142,9 +142,9 @@
 		return "";
 	}
 
-	public void update(Position3D position, Angle angle, String modelID, String areaURI) {
+	public void update(Position3D position, Quaternion3D angle, String modelID, String areaURI) {
 		setPosition(position);
-		setAngle(angle);
+		setQuaternion3D(angle);
 		if (modelID != null) {
 			setModelID(modelID);
 		}
diff --git a/src/main/java/cactusServer/entities/Instance.java b/src/main/java/cactusServer/entities/Instance.java
index 15a2e95..665701c 100644
--- a/src/main/java/cactusServer/entities/Instance.java
+++ b/src/main/java/cactusServer/entities/Instance.java
@@ -11,7 +11,7 @@
 import org.ntlab.radishforandroidstudio.framework.model3D.ModelFileFormatException;
 import org.ntlab.radishforandroidstudio.framework.model3D.Object3D;
 import org.ntlab.radishforandroidstudio.framework.model3D.Position3D;
-//import org.ntlab.radishforandroidstudio.framework.model3D.Angle;
+import org.ntlab.radishforandroidstudio.framework.model3D.Quaternion3D;
 import org.ntlab.radishforandroidstudio.framework.model3D.Universe;
 import org.ntlab.radishforandroidstudio.framework.physics.AngularVelocity3D;
 import org.ntlab.radishforandroidstudio.framework.physics.Ground;
@@ -147,7 +147,7 @@
 	}
 
 	public IDAddressedEntity createCharacter(String instanceId, String accountURI, String name, Position3D position,
-			Angle angle, String model) {
+			Quaternion3D angle, String model) {
 		String id = RandomStringGenerator.generateUniqueString(Character.UNIQUE_ID_LENGTH,
 				RandomStringGenerator.ALPHA_NUMERIC, characterMap.keySet());
 		Character character = new Character(instanceId, accountURI, name, position, angle, model);
@@ -160,7 +160,7 @@
 		return this;
 	}
 
-	public Character updateCharacter(String characterId, Position3D position, Angle angle, String modelID) {
+	public Character updateCharacter(String characterId, Position3D position, Quaternion3D angle, String modelID) {
 		Character character = characterMap.get(characterId);
 		character.update(position, angle, modelID, null); // areaURI(��4����)�̍X�V�͌Ăяo����Ŏ����ōs����
 		return character;
diff --git a/src/main/java/cactusServer/entities/Player.java b/src/main/java/cactusServer/entities/Player.java
index aecae53..a0945b8 100644
--- a/src/main/java/cactusServer/entities/Player.java
+++ b/src/main/java/cactusServer/entities/Player.java
@@ -2,7 +2,7 @@
 
 import org.ntlab.radishforandroidstudio.framework.gameMain.Actor;
 import org.ntlab.radishforandroidstudio.framework.model3D.Position3D;
-//import org.ntlab.radishforandroidstudio.framework.model3D.Angle;
+import org.ntlab.radishforandroidstudio.framework.model3D.Quaternion3D;
 
 import cactusServer.models.Instances;
 import net.arnx.jsonic.JSONHint;
@@ -12,7 +12,7 @@
 	private String characterURI;
 	private String areaURI;
 	private Position3D position;
-	private Angle angle;
+	private Quaternion3D angle;
 	private CameraState cameraState;
 	private EmoteState emoteState;
 	@JSONHint(ignore = true)
@@ -48,7 +48,7 @@
 	private void readCharacterData(String characterURI) {
 		Character character = getCharacter(characterURI);
 		setPosition(character.getPosition());
-		setAngle(character.getAngle());
+		setQuaternion3D(character.getQuaternion3D());
 		setAreaURI(character.getAreaURI());
 		setCharacterURI(characterURI);
 	}
@@ -69,7 +69,7 @@
 		return position;
 	}
 
-	public Angle getAngle() {
+	public Quaternion3D getQuaternion3D() {
 		return angle;
 	}
 
@@ -97,7 +97,7 @@
 		this.position = position;
 	}
 
-	public void setAngle(Angle angle) {
+	public void setQuaternion3D(Quaternion3D angle) {
 		this.angle = angle;
 	}
 
@@ -113,11 +113,11 @@
 		setEmoteState(new EmoteState(animationClassToStart));
 	}
 
-	public Player update(String characterURI, Position3D position, Angle angle, CameraState cameraState,
+	public Player update(String characterURI, Position3D position, Quaternion3D angle, CameraState cameraState,
 			EmoteState.EmoteType animationClassToStart) {
 		setCharacterURI(characterURI);
 		setPosition(position);
-		setAngle(angle);
+		setQuaternion3D(angle);
 		setCameraState(cameraState);
 		updateEmoteType(animationClassToStart);
 		updateAreaURI();
diff --git a/src/main/java/cactusServer/models/Instances.java b/src/main/java/cactusServer/models/Instances.java
index 378f1c6..08c2397 100644
--- a/src/main/java/cactusServer/models/Instances.java
+++ b/src/main/java/cactusServer/models/Instances.java
@@ -5,9 +5,8 @@
 import java.util.List;
 
 import org.ntlab.radishforandroidstudio.framework.model3D.Position3D;
-//import org.ntlab.radishforandroidstudio.framework.model3D.Angle;
+import org.ntlab.radishforandroidstudio.framework.model3D.Quaternion3D;
 
-import cactusServer.entities.Angle;
 import cactusServer.entities.CameraState;
 import cactusServer.entities.EmoteState;
 import cactusServer.entities.IDAddressedEntity;
@@ -122,7 +121,7 @@
 		return instance;
 	}
 	
-	public Player updatePlayer(String playerId, String characterURI, Position3D position, Angle angle,
+	public Player updatePlayer(String playerId, String characterURI, Position3D position, Quaternion3D angle,
 			CameraState cameraState, EmoteState.EmoteType animationClassToStart) {
 		Player player = playerMap.get(playerId);
 		player.update(characterURI, position, angle, cameraState, animationClassToStart);
diff --git a/src/main/java/cactusServer/resources/InstancesRest.java b/src/main/java/cactusServer/resources/InstancesRest.java
index 0793efe..b2d2445 100644
--- a/src/main/java/cactusServer/resources/InstancesRest.java
+++ b/src/main/java/cactusServer/resources/InstancesRest.java
@@ -14,8 +14,8 @@
 
 import org.glassfish.jersey.process.internal.RequestScoped;
 import org.ntlab.radishforandroidstudio.framework.model3D.Position3D;
+import org.ntlab.radishforandroidstudio.framework.model3D.Quaternion3D;
 
-import cactusServer.entities.Angle;
 import cactusServer.entities.Area;
 import cactusServer.entities.Area.Allowed;
 import cactusServer.entities.CameraState;
@@ -108,7 +108,7 @@
 	@Produces(MediaType.APPLICATION_JSON)
 	public URIAddressedEntity createCharacter(@PathParam("instanceId") String instanceId,
 			@FormParam("accountURI") String accountURI, @FormParam("name") String name,
-			@FormParam("position") Position3D position, @FormParam("angle") Angle angle,
+			@FormParam("position") Position3D position, @FormParam("angle") Quaternion3D angle,
 			@FormParam("modelID") String modelID) {
 		Instance instance = Instances.getInstance().getInstance(instanceId);
 		IDAddressedEntity ae = instance.createCharacter(instanceId, accountURI, name, position, angle, modelID);
@@ -138,7 +138,7 @@
 	@Produces(MediaType.APPLICATION_JSON)
 	public Player updatePlayer(@PathParam("instanceId") String instanceId, @FormParam("playerId") String playerId,
 			@FormParam("characterURI") String characterURI, @FormParam("position") Position3D position,
-			@FormParam("angle") Angle angle, @FormParam("cameraState") CameraState cameraState,
+			@FormParam("angle") Quaternion3D angle, @FormParam("cameraState") CameraState cameraState,
 			@FormParam("animationClassToStart") EmoteState.EmoteType animationClassToStart) {
 		return Instances.getInstance().updatePlayer(playerId, characterURI, position, angle, cameraState,
 				animationClassToStart);
@@ -148,7 +148,7 @@
 	@PUT
 	@Produces(MediaType.APPLICATION_JSON)
 	public Character updateCharacter(@FormParam("characterId") String characterId, 
-			@FormParam("position") Position3D position, @FormParam("angle") Angle angle, @FormParam("modelID") String modelID) {
+			@FormParam("position") Position3D position, @FormParam("angle") Quaternion3D angle, @FormParam("modelID") String modelID) {
 		Character character = updateCharacter(characterId, position, angle, modelID);
 		if (character != null) {
 			throw new WebApplicationException(200);