Yoshimura Sumomo: Dorei ningyô 2001

Directed by Minoru Kunizawa

Aki leads an ordinary married life with her husband, Kai. One day, she receives an email asking, "Why not put your body up for auction?" If a buyer is found, she is contractually obligated to serve as a sexual partner for the duration of the agreement. While Kai is away on a business trip, Aki visits the venue. Stripped naked and subjected to various examinations, she is bombarded with questions from potential buyers. Ultimately, a man named K wins the bid at a high price. He "trains" her using bizarre methods—such as forcing her to record videos of her private life and her sexual encounters with her subordinate, M—awakening a side of her body that her husband had never explored...