Kuroshima Rei is a slender beauty and a timid teacher who cannot refuse when someone pressures her. After she gives in to an adult-student role-play request and helps him cum, the school’s crude principal witnesses it. He summons her to his office, threatens her with dismissal, and coerces her into a sexual arrangement that is practically a slave contract. She hates it at first, but repeated abuse leaves her pussy constantly dripping and transforms her into an obedient, shameless pet. Eventually, every summons ends with her smiling, soaking wet, and cumming until she is spent.