''Akiya Yukino is the person who changed my life!''
Karasuma Eru has only one dream; to live a normal high school life. After many unsuccessful school transfers, Eru ends up giving up on that dream, only to be proven wrong by the latest transfer after meeting Akiya Yukino, who is allegedly hiding a huge secret behind her beautifulness.

The main story picks up 2 months after the transfer, as a weird rumor is being spread across the city about people disappearing into thin air. Hearing that, Eru receives a disturbing phone call soon after...