A virgin teacher sees his quiet student masturbating secretly. He uses it as a masturbation aid to avoid being found out, but... "I know you're watching me masturbate." Even though she's such an ordinary student... an unexpected temptation leads to masochistic training. In the library, she gives him a drooling handjob and ejaculation control, then straddles him in her uniform without panties and fucks him raw, losing his virginity. "Teacher, please be my toy." In a deserted classroom, her anus is expanded with plenty of juice, turning her into a masochistic pet. A forbidden record of a student who is skilled in sex despite his appearance.