Akuma no RiddleEl enigma del demonio; İblis Bilmecesi; Riddle Story of Devil; Akuma no Riddle; Загадка истории Дьявола; لغز قصة الشيطان; ปริศนาสั่งฆ่า; 恶魔的谜语; 恶魔谜题; 悪魔のリドル; 惡魔的謎語; 惡魔謎題; 악마의 수수께끼; Enigma do Diabo; The Demon Riddle

At a boarding girls' high school where every student is assassin, they target only one life - "Ichinose Haru". Similarly, "Azuma Tokaku" is an assassin who transferred schools to target her, however she gradually became attracted to "Haru" and decided to protect her. Extreme school life START!