It's true that marrying a young wife is not happy at all, especially when she is in her late teens like the husband in the movie. Not only did he not meet the sexual needs of his lewd wife Okuda, but he was also cuckolded by her with the neighbor without his knowledge. It was because she saw that her old and weak husband could no longer do anything that she began to look for a healthy young man to experience a new feeling and satisfy her boundless thirst. And the neighbor next door is a great object when he himself is very interested in sex, even peeking at her and her husband having a relationship with each other.