Ayato, a boy who spent his childhood in a foreign terrorist organization, is troubled by the horror of his own past which made him question his own self-worth. But then he is recuited to join a "murder school." Now he fights against the evils of the world with the motto, "There are lives that can be saved by killing!" (Source: Young Champion, translated)

Raised as the son of the Dragon King, Ao is given a challenge to become a full-fledged individual: he must make 100 human friends. With zero magical power and no common sense, Ao enrolls in a magic academy full of aristocrats, and chaos ensues! Can Ao, despite his challenges, make 100 friends and pass the test? Prepare for a whirlwind of wild adventures in this heartwarming and humorous tale!