A story of a certain family. The reason for this was the long-term overseas business trip of his older brother Tatsuo. This is because Yasuhiro, who was supposed to be adopted as a son-in-law, crosses the line with his sister-in-law, Ryoko Murakami, not long after they live together. As a result, Ryoko became her younger brother's sex slave. In the midst of this, she finds her brother-in-law, Leon Otowa, who is relatively unable to spend the night with her. When her brother returns to Japan, she continues to seduce her brother with her defenseless and hedonistic behavior, as if to target her, and she ends up having an affair. Then one day, the brothers came up with something and made a strange proposal at the same time. Why don't you try whether my wife or your wife is a pervert?
