Having an affair with my husband’s best friend Yuka Arai

Cheating 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 Yuto, suddenly comes to visit. He says that the company he works for has gone bankrupt and that he was kicked out of the company housing overnight without any warning. Yuto kindly agreed to help Shingo; he consulted Miho about letting Shingo stay over for a few days. And this is what leads to Miho's immoral affair.