Having an affair with a married man

Sayama Ai is a person helped by Yukio on the road because she lost her phone, from which they began to consider each other as friends and invited each other to their homes. After many times, they felt closer and grew fond of each other, even though he was married. However, his family was not very happy, so they confided in each other, and over time, they found themselves feeling more than friendship. Both realized that this was love. Whenever his wife went on business trips, he brought his lover home and xxx.