Sota Nishino is a good-looking high-school student. He meets Mai, who is his friend Yukihiro Nanase's younger sister. She is also a high-school student and somewhat naïve. Sota Nishino mutters to Yukihiro Nanase, "Your sister is cute." Mai overhears Sota's remark through the thin wall between her room and her brother's.
You can now watch Anitomo online on the following streaming providers in the United States.
| Directing | Ryô Nakajima | Director |
| Writing | Chieko Nakagawa | Writer |