Haru Ichinose is a student at a private girls' boarding school, Myoujou Academy, who is being targeted by 12 assassins disguised as students and Tokaku Azuma is a transfer student and an assassin who also initially targets Haru, but develops feeling for her and decides to protect her from the other assassins.
Haru Ichinose is a student at a private girls' boarding school, Myoujou Academy, who is being targeted by 12 assassins disguised as students and Tokaku Azuma is a transfer student and an assassin who also initially targets Haru, but develops feeling for her and decides to protect her from the other assassins.