Bitch Gakuen ga Seijun na Hazu ga Nai!!

Amami-kun is the son of the founder of the school and the only male student at the institution, as all the other boys left school due to the persecution of his cousin Arisu-chan along with her friends, trying to humiliate and intimidate them. Until her older sister Mao-nee arrives from overseas, and the tables seem to turn…