Satoya and Rima are beautiful twin girls who attend Higashi Kamakura High School. They are sisters that everyone looks up to, but in fact, when she was little, Satoya was burned on her face and half of her body in an incident caused by Rima, and she always hid the burns. One day, Rima's insensitive behavior triggers Satoya to become a demon of revenge! A psychological suspense story!