A girl is hit by a car and wakes up as part of the mind of Ayato, a character from another world. She must guide Ayato into this new world in order to save her own soul and help Ayato feel his emotions. In addition to stopping Ayano from killing her rivals, the girl and Ayato must prove to the world that the Aishi family is not evil. So will the two be successful or will the story have a bad ending?

Sixteen superior students, including Taeko Yamada, receive invitations to enroll in the prestigious Dream Academy, a high school renowned for its unparalleled academic excellence and state-of-the-art facilities. For shape their futures, the students arrive on school, their hearts filled with dream. However, their dreams quickly turn into a reality as they find themselves trapped within the school's impenetrable walls, cut off from the outside world. A sinister figure, hidden behind screens and speakers, reveals that they are now participants in a twisted 'killing game.' To graduate and escape, a student must successfully murder a classmate and avoid being caught during the subsequent trial.