Amateur girls in swimsuits take on the treadmill quiz for a big prize! If you can answer 3 out of 5 questions correctly while running, you win! If you can clear all 3 stages, you'll win 1 million yen! First, try it in a normal swimsuit! In the next stage, the machine speeds up! In the final stage, try it in a micro bikini! As she sprints, her swimsuit slips and her breasts pop out! Her private parts are exposed! She's bound to blush as she runs with maximum embarrassment! Amateur girls who fail will be punished with an instant fuck!