I'm a virgin working odd jobs after dropping out of college, and nothing in my life seems to go right. Everything changes when the Kuriyama couple moves in next door. The wife, Rio, looks sexy in loose clothes and knows exactly how to close the distance, so I quickly fall for her. One summer day, she invites me over to teach her about computers, and the sight of her drenched in sweat overwhelms me with desire. I think I'm the one pushing her down, but she gradually climbs on top and takes control...