After Minato Rika transferred into the class, everything changed. She becomes the target of bullying, but the girl doesn’t lose heart and befriends Izono. Learning his secret, the mysterious person forces a fellow classmate into living together and makes an incredible offer: to get revenge on the pair of the main instigators. At first Izono tries to wriggle out with excuses, but little by little he agrees to Minato’s methods. Bringing Haru, another target of mockery, into it, they spark a rebellion.