aya and nanako meet at a women-only sm club. aya, who is a customer, liked m’s nanako and frequented the sm club. as they play more and more, they become attracted to each other and start dating. she understands that nanako will play with customers other than herself, but she loses in loneliness and finds out that she also went to another sm club. nanako humiliates aya by reversing the roles of s and m, and by playing aya. gradually escalate and body and mind are bound by nanako.
