The challenge is simple: make him cum from cowgirl within five minutes of penetration. Nagisa Shinohara, whose pale skin stands out against red lingerie, is financially sensible but intensely horny. Since foreplay does not count toward the clock, she warms his cock with a blowjob, nipple licking, and a titjob before mounting him and starting the countdown. She launches into an uninterrupted barrage of vertical bouncing, spider, grinding, forward-and-back, side-to-side, leaning forward, and arching back, all with expert vaginal control. After proving she loves cowgirl, she refuses a prize and asks to ride however she wants. She inserts him again and keeps hammering away through repeated orgasms, determined to drain every last drop—and still refuses to stop.