"Yuu san? Isn't it possible that my younger brother has recently started going to brothels because you, his wife, are slacking off in the night?" It's been two years since she got married... Yuu has had trouble conceiving a child, and is frustrated that her husband has been coming home late recently. But one day, her husband's older sister, Hitomi, comes to the house and confronts her husband about his visit to a brothel. Hitomi dotes on her younger brother more than her mother-in-law and is always nagging her. Yuu is always annoyed by Hitomi. The pride of the two women clashes, and the final battle is about to begin!!