Mysteriously transformed into mini versions of themselves, Goku and his friends travel to the Demon Realm to uncover the truth and find a cure.

It’s springtime at Kimberly Magic Academy, and new students are beginning their first year. Among them are a skilled and studious boy, Oliver, and a headstrong samurai girl, Nanao. They soon form a unique bond in the halls of Kimberly, but this picturesque school isn’t what it seems. Dark secrets and endless danger lurk behind every corner. Can these wizards make it to graduation alive?!

Rei Hitoma wants a quiet life, but instead he is put in charge of teaching a group of monster girls.