Tatsuya felt a little lonely in the empty house. It had been a few days since his wife returned home because she was pregnant. No matter how used to living alone he was, it was still lonely. He wondered how long this lifestyle would continue... Just as he was feeling depressed, his sister-in-law Yuri came over. Tatsuya was elated to see that he was not alone at dinner for the first time in a long time. He never would have imagined that Yuri had come to relieve her sexual frustration. That is, until Yuri barged into the bathroom...