/// <summary>
/// 無敵状態になる
/// </summary>
private async UniTask ChangeStarState(int value)
{
audio.PlayOneShot(skill);
audio2.PlayOneShot(skill2);
Observable.Timer(TimeSpan.FromSeconds(0.3f))
.Subscribe(_ => audio3.PlayOneShot(skill3)).AddTo(this);
isStar = true;
var startPos = transform.position;
LeanTween.moveY(this.gameObject, 1.0f, 1.5f).setEaseInOutCubic();
pp.StarEffect();
await UniTask.WaitUntil(() => skillExecutor.SkillGauge <= 0);
Observable.Timer(TimeSpan.FromSeconds(1))
.Subscribe(_ => isStar = false);
pp.FinishStar();
var targetPos = new Vector2(transform.position.x, -3f);
LeanTween.move(this.gameObject, targetPos, 0.2f).setEaseInOutCubic();
}