Having an affair with her husband's best friend Yuka Arai. Miho and Yuto are living a happy life after moving into the house they worked hard to buy. One day, Shingo, a childhood friend of her husband, suddenly came to visit. He said that the company he was working for went bankrupt at night and he was kicked out of the company's housing without any warning to prepare him. Kind-hearted Yuto agreed to help Shingo, he asked Miho's opinion to let Shingo stay for a few days. And this is the cause of the adultery of the lustful Miho.
