Yuuji and his wife returned to her parents' home. His mother-in-law, Yuu, who greeted them, was his father-in-law's young and beautiful second wife. Yuuji had been concerned about the strained relationship between his wife and his mother-in-law, but when he brought it up, his wife got upset. That night, when Yuuji went to the kitchen, he found Yuu drinking alone. He asked her about the relationship between his wife and his mother-in-law. As they talked, the conversation turned to their nightly activities, and in their drunken state, they crossed a line. After that, they continued to have physical relations…
