Kora grew up a normal girl, with a normal, happy family. She is content with her life until she is stolen away by a beast that calls himself Jeff. The new world she finds herself in is full of death, violence, and secrets. Will she escape the clutches of an insane man who claims that she belongs to him? Or will she fall into madness?

Akari Suzuki does not lead a happy life. She is an assassin and is often forced to hide her gender. She enters class 3-E to assassinate the strange teacher. Immediately, she catches Karma's attention and piques his interest. Will he be able to break down the walls she built for herself and help her?