Yukari used to have a sex friend relationship with her son's friend Yusuke, but he moved away due to family circumstances, and now she is sexless and frustrated. A few years later, when they meet again by chance, Yukari remembers the excitement of that day and can't resist and they end up having sex... The shock of Yusuke's intense thrusts, which don't stop no matter how many times he comes, remains even after the act, making her body ache. Remembering the pleasure she once felt, Yukari can't resist and seeks Yusuke again...