Yukari, who had once been in a casual relationship with her son's friend, Yusuke, but had to move away due to family circumstances, was now living a sexless life, full of frustration. Years later, upon a chance reunion, Yukari couldn't help but remember the excitement of those days and couldn't resist getting close to him again... The intense piston-like impact of Yusuke's relentless thrusts remained even after the act, making her body ache. Remembering the pleasure of the past, Yukari couldn't help but seek out Yusuke again...