Amane Kojou, a virgin high school track and field athlete with a strong sexual drive, is frustrated with her gentle boyfriend who only kisses her. She relieves herself nightly through intense masturbation, unaware that her middle-aged landlord has been secretly filming her private moments. When confronted with the explicit videos, Amane faces a ruthless ultimatum: obey his lewd demands in exchange for deleting the evidence. What starts as reluctant compliance quickly spirals into addictive pleasure as the experienced older man awakens her suppressed desires