I Have Been In A Friendship With A Friend Of My Son's For 5 Years Now. Playing With A Younger Boy With Fire...I'm Drowning In A Nakadashi Affair. Mariko Furuto

"Congratulations on graduating, just like five years ago..." Five years have passed since I continued my friends-with-benefits relationship with my son's friend, Kitayama-kun. The trigger was five years ago, when my husband's affair was discovered, and Kitayama-kun comforted me, who was feeling down, with a gentle kiss. Wanting to avoid interfering with their exams, I waited until graduation day. Then, responding to Kitayama-kun's feelings, we had a physical relationship for the first time. For five years since then, we repeated our trysts, hiding from my husband and son, but when Kitayama-kun got a girlfriend, our relationship began to change...