Welcome to the Classroom of the Supreme Ability Doctrine: Other School Days is an official spin-off anthology manga of You-Zitsu series, which was published under Media Factory's MF Comic imprint on September 23, 2017.

The main character, Dan Kota, is a boy who has a hunger for love and a strong distrust of adults. He uses a cool original story and a lively touch to depict how he struggles and grows through boxing, the friends he meets at the hospital, and his old enemies.

The story is set in the ancient capital of Kamakura--- The main character, Shiro Kazuki, is a member of the vigilante group "Myojin-kai." People call him a ``fighter'' because he specializes in suppressing violent incidents... Without regard for life. Katsuki throws herself in search of a place of pandemonium. The reason is his past that cannot be erased!!