33-year-old office lady Ryoko is single and was previously in a relationship with a timid, SM-loving boyfriend. Dissatisfied with the half-hearted SM play in that relationship, she decided to enter the AV world. Willingly submitting herself to intense SM training, she experiences erotic elements such as face wrapping, wax play, and watersports. Highlights include relentless deep throating and a dramatic mid-air enema blast. Finally, she completes the full course with anal sex with her beloved male co-star.