It was supposed to be her high school debut! One month into her first year of high school, Kaori Tachibana's life is upended after her latent magical powers awaken in the most explosive way--by literally blowing up part of her school. Kaori finds herself whisked away to the International Academy of Interdisciplinary Studies Tokyo Branch, a school that's not at all what it seems on the outside. International? More like Inter-Realm! This school is for mages and monsters alike, where students from many different realms come together to hone their magical skills and learn to live in harmony.

An Elven Student Council President who hates "half-breeds!?" Demon delinquents and mean girl Mermaids!? Assigned to the remedial class!? That doesn't sound very harmonious! If normal high school is like a vicious jungle, then this place is like a kodoku jar! Kaori's magical training begins!