Narumi is a cute schoolgirl who loves being teased by her masochistic homeroom teacher, enjoying daily fun with him in the changing room. Today, she lures him again, riding his face and smothering him with her bouncy ass, nearly making him blissfully pass out. She expertly grinds her penis-band hips to bring him to climax over and over. She discovers a classmate masturbating by accident and takes him to the infirmary for her amusement, turning him into her obedient toy. Even after he cums, she won't let him stop, driving him into a dazed state where he can't think straight. As a loyal masochist pet obeying her strict no-masturbation rule, she rewards him by thoroughly penetrating his ass. The perverted anal pleasure she delivers is truly the ultimate erotic experience.