My wife's college friend, Hitomi, is coming to stay for work, and her husband, Kazuo, is sore. She had known about her Hitomi for a long time and was aiming for her cheating chance. At that time, her father seems to have been injured by chance, and her wife, Miyako, has to return to her parents' home. "It's unscrupulous, but I'm lucky! I'm alone with Hitomi until my wife returns!"
