第 1 集: 暴風雨之夜，神秘訪客造訪良介的家。
2018年7月7日 播出
Thunder rumbles on a stormy night. At a certain house where Ryousuke, a high school boy is currently home alone, the phone rings just moments after the power goes out. Then a flash of lightning displays the shape of a person outside the window... (Source: Crunchyroll)