H-cup schoolgirl Aimi Yoshikawa is obsessed with sex, preferring it over studying. When she finds a male classmate lying unconscious in the infirmary, she mischievously gives him a titty fuck. As his penis gradually hardens, she first takes it into her mouth for a blowjob, then envelops it with her soft, massive breasts, bringing him to climax. In a transactional arrangement, Aimi, who lacks enough credits to graduate, reluctantly offers her exquisite body to her teacher. As he passionately gropes her huge breasts, she loses herself to his skilled, mature techniques, climaxing repeatedly as he thrusts deep inside her over and over.