Mishima Yuki, who has been hospitalized to treat her long-standing illness with the support of her husband, has a past where she bullied her classmates to the point of refusing to go to school during her student days, despite her current appearance. Although she herself has forgotten those times, the victim, or rather the victim's sister who is now a nurse in charge, has been quietly waiting for this opportunity. Ten years have amplified the hatred to its maximum extent, and the ultimate revenge game begins...
