団地妻　雨やどりの情事 (1977)

On a rainy night, the lights in the windows of the apartment complex go out one by one. Chiaki Onda (Junko Miyashita) was waiting for her husband, Hajime (Akira Hanagami), who came home late tonight. Dinner is cold and the children are already asleep. A rift had already formed between Chiaki and Hajime, and sex was nothing more than a means of fulfilling Hajime's sexual desires, and there was no joy in it. An attraction to her classmate's driver awakens...