diff --git a/src/main/java/cactusServer/entities/Bullet.java b/src/main/java/cactusServer/entities/Bullet.java
index 021c408..e652933 100644
--- a/src/main/java/cactusServer/entities/Bullet.java
+++ b/src/main/java/cactusServer/entities/Bullet.java
@@ -5,11 +5,13 @@
 import org.ntlab.radishforandroidstudio.framework.model3D.Quaternion3D;
 
 import cactusServer.models.BulletModelManager;
+import net.arnx.jsonic.JSONHint;
 
 public class Bullet extends Entity3D {
 	private String playerID;
 	private Position3D position;
 	private Quaternion3D angle;
+	private boolean isAlive = true;
 
 	private Bullet() {
 		// JSON�G���R�[�h���̌Ăяo���p
@@ -34,6 +36,11 @@
 	public Quaternion3D getAngle() {
 		return angle;
 	}
+	
+	@JSONHint(ignore = true)
+	public boolean isAlive() {
+		return isAlive;
+	}
 
 	public void setPlayerID(String playerID) {
 		this.playerID = playerID;
@@ -52,6 +59,11 @@
 			((Object3D)this.placeable.getBody()).apply(angle, false);
 		}
 	}
+	
+	@JSONHint(ignore = true)
+	public void setAlive(boolean isAlive) {
+		this.isAlive = isAlive;
+	}
 
 	public void update(Position3D position, Quaternion3D angle) {
 		setPosition(position);