Shirou Yusa

Оригінальне ім’я: 遊佐司狼

Ren's best friend since childhood. He is a genius skilled in all sorts of fields, but as a result, he finds life boring. As a constant thrill-seeker, he acts recklessly and even incited a brutal fight with Ren, ultimately breaking off their friendship. As a result, he vanished from school and has not been heard from since. (Source: VNDB)