Mangas

Kousha no Sora de wa Akuma ga Waratteiru -  Kousha no Ten (Sora) de wa Akuma ga Waratte Iru -  Kousha no Ten de wa Akuma ga Waratte Iru -  校舍的天空下有恶魔在嗤笑 -  校舎の天では悪魔が嗤っている
Konno Wataru is the only male student at the prestigious St. Justine Girls High School, a boarding school built on a solitary island in the ocean. The reality of this school where daughters of rich and famous families gather is a cruel sanctuary where the "student council" dominates with pleasure and pain...