Mr. and Mrs. Yuji return to their wife's parents' house.Her mother-in-law, Yu, who greeted her, was a young and beautiful wife of her father-in-law.Yuji was concerned about the awkward relationship between such a mother-in-law and his wife, but when he heard about it, his wife spoiled her mood.That night, when Yuji went to the kitchen, Yuu was drinking alone.Yuji heard about the relationship between his wife and mother-in-law there.The two gradually get excited about the night life and cross the line in a drunken momentum.After that, the two people who overlap their bodies...