Luxurious Bone (2001)

Miyako works as a call girl, living with her close friend Sakiko. After encountering a client, Shintani, with whom Miyako experiences sexual pleasure for the first time in her life, the two women begin to drift apart. Miyako suggests that Shintani should sleep with Sakiko, an event that draws the three into a love triangle in which their various flaws and anxieties are reflected.