``Rei told me the same thing five years ago.'' I had been having a sex friend relationship with my son's friend, Kitayama-kun, for five years.The trigger was my husband's affair...I got into an argument with my husband, and when I was exhausted, Kitayama-kun confessed to me.That night, I crossed the line because I wanted to respond to Kitayama-kun's feelings, but at the same time, I was targeting my husband.From that day on, we became a friend's mother, a friend of my son's, and a sex friend.From then on, we continued to seek each other out of the sight of our families, but when Kitayama-kun got a girlfriend, our relationship was shaken...
