Short-haired beauty Mayu Komikawa takes on a challenge: make the male performer cum in cowgirl within five minutes or face a penalty. Confident that five minutes is plenty, she negotiates for him to release as soon as it feels good, then warms him up with kisses and nipple licking. She draws a warning for teasing him by pretending to mount before finally sliding him inside and starting the clock. Tight-pussy Mayu unleashes her full-power ride against a performer determined not to finish early—but the winner remains uncertain until the end.