光の問題だと思う
https://obs.line-scdn.net/0hbZjWeCRbPXVXLha6Zs9CIhtzOxouTSd9PVYqTyJ4N1siQip1P1QmQCp8OgFmf3IjNRIkEyIqKxp_eC9ICksQTncpJQ4fagZcCz0lahsyY0F8HngibE90GnImMRF4H34gLkkiR3cpYRV9.jpg