リクエストのネコ変身です。
そのマルチプレイのゲームは、やられる度にプレイヤーがアバターの姿に変わっていく隠し機能があります。
Requested work. It is a transformation into a cat.
Its multiplayer games have a hidden feature where each time the player is hit, he or she changes into the same form as his or her avatar's.