Arisa Togawa, lesbian unbanning, mistress contract, forbidden love with mother's friend, begging for masochistic lesbian training, Ayaka Tomoda, BBAN-516

Two mothers, Risa and Ayaka, are friends who drop their children off at kindergartens in Tokyo. One day, after arguing with her husband, Risa seeks help from Ayaka, who proposes a "mistress contract." Although the suggestion is unexpected, Risa readily agrees. From that day on, Risa's long-hidden masochistic tendencies gradually surface, and she begs to be "disciplined." She forgets her identity as a mother and indulges in the pleasures of being a woman. The two engage in dark and vulnerable, yet pleasurable, lesbian sex, becoming addicted to it.