“Congratulations on graduating. It’s just like five years ago...” I have secretly been fuck buddies with my adult son’s friend Kitayama for five years. It began when my husband’s affair came to light and Kitayama comforted me with a tender kiss. Not wanting to interfere with the boys’ studies, I waited until graduation day before accepting his feelings and sleeping with him for the first time. For five years we continued meeting behind my husband’s and son’s backs, but our relationship changes when Kitayama gets a girlfriend.