JAV48

This is a story of a brother and his brother-in-law. Ryoko Murakami, a brother-in-law, lives with her brother-in-law and his wife at her husband Tatsuo's house. Tatsuo is on a business trip overseas, and when his brother-in-law Yasuhiro finds out that Tatsuo has been masturbating himself because he can't stand the sexless situation, Tatsuo crosses the line with Yasuhiro without any hesitation. Yasuhiro's desire for dominance over Ryoko gradually grows inside of him as he is about to be dominated by her body. And by the time he realizes it, serving Yasuhiro as a sex slave becomes a normal part of his life.... And when Tatsuo returns from his business trip overseas, Yasuhiro's demands escalate even further...