With my husband away on a long business trip, Ryo has been using exercise to curb her sexual desires. One day, her son’s friend Kousuke visits. From the moment she sees his muscular body, she’s captivated. When Kousuke is naked in the sauna, Ryo secretly watches his huge cock. Long deprived of sex, she loses control, seducing him. At his peak virility, Kousuke can’t resist and gives her what she wants. But Ryo didn’t expect his stamina—he fucks her relentlessly from night to morning, cumming inside her countless times. Exhausted and sore, Ryo ends it, and Kousuke respects her decision. Two months later, hearing Kousuke has a model girlfriend, Ryo feels a pang of loss, craving the pleasure he gave her. When Kousuke returns, saying his girlfriend won’t let him fuck, Ryo’s thrilled. She invites him to fuck her freely, having trained her body to match his sexual demands...