Pale, curvy, and busty Nami Sawaguchi takes on the Standing Doggy Challenge: if she can make the male performer cum within five minutes, she wins a prize. She starts out smiling and eager, but his rapid pounding makes her climax so many times that she can barely move her hips. With her legs spread wide and huge tits bouncing as he drives into her from behind, her pussy squeezes him so tightly that he cannot help thrusting even harder. Can she make him finish before time runs out?