Matsuyama Chizuru

A transfer student in Hachibe's class, and is also a hand fetishist who goes as far as to jump in the way of objects that would hurt Hachibe's hands (which she considers her ideal hands), and clinging onto his hand, though these actions causing a large misunderstanding to their classmates.

At her previous school, she was teased and called a hand pervert, resulting in her transfer. She also has Hachibe's ideal marshmallow ears, which she claims are extremely sensitive. While she is in many ways practically a female version of Hachibe, she differs from him in that she does not care for his well-being other than his hands, going as far as to hurt Hachibe to prove so. Since they both have each other's ideal parts, they play games where the punishment for losing is for the other to indulge in their fetish.