Fûfu kôkan zenya: Watashi no tsuma to anata no okusan

Original title: 夫婦交換前夜 私の妻とあなたの奥さん

Shinsuke, a pink film director, is no longer able to have sex with his wife Shigure, and instead he has an affair with Kanae, a married woman living in the same apartment complex, to vent his desire. When Kanae sends photos of their outdoor play to a magazine, Atsuo, Kanae's husband, sees the photos and asks Shinsuke for swapping...