After being raped by two delivery workers, the personality of the beautiful wife Nanase changes a lot, and she becomes more and more lewd. Since the day she moved to her husband's brother's house for family matters, the wife and him have always been paying attention to each other. The brother always secretly peeked at the times when his sister-in-law deliberately made sexually suggestive and stimulating movements. Because of this, after being raped by two delivery men, she became bolder and took the initiative to seduce her brother. Naturally, the brother was not stupid to pass up such a good opportunity.