Reunited with Izumi, his former tormentor from school, after 20 years, Hirakishi finds her living a happy life with her beloved daughter, Mai, despite her own unfortunate life. Feeling ashamed of his own miserable existence, Hirakishi vows revenge, determined to make Izumi pay for everything she did to him. He breaks into her house and destroys the most precious thing to her: her daughter, Mai. Ruthless and merciless, he performs a brutal deep throat and rape, acting as a substitute father for the helpless Mai. This is a merciless revenge drama #Chinp.