Aito gets what every bullied person fantasizes about: actual power over the person who destroyed him. The game doesn't let him feel good about it. What starts as revenge becomes a month of watching another human being break down in a cell, and Aito realizes too late that inflicting the same suffering he endured doesn't erase his own. The show earns its tragedy by refusing to pretend that justice and cruelty are different things.
A bullied student receives an impossible offer: participate in an illegal game where he can imprison his tormentor for thirty days with complete impunity. Aito Eyama has spent years absorbing abuse from his classmates, but when a mysterious invitation arrives promising wealth and a chance at revenge, he seizes it. His target is Aya Kirishima, the girl who made his life unbearable. What follows is a psychological descent into captivity and control that tests both prisoner and jailer in ways neither anticipated. The game's rules are deceptively simple. Eyama can do anything short of killing Aya, but must keep his identity hidden to claim the prize. Locked away with limited contact, Aya becomes a captive audience to his cruelty while Eyama experiences the intoxicating power of her helplessness. Yet isolation breeds unexpected complications. As days pass, the dynamic between them shifts in uncomfortable directions, forcing Eyama to confront whether his revenge fantasy can withstand the reality of what he's become. A dark psychological thriller that examines the cost of payback when given unchecked freedom.