Miyu Aizawa takes on her first challenge with the modified orgasm bicycle. The mechanism works so that when she pedals, the dildo on the saddle moves up and down, and she takes on the challenge of continuous climaxes at a speed of 20 km/h. The more she pedals, the deeper her womb is thrust, and as she accelerates, she reaches climax. Since no one will notice if she keeps a straight face no matter what, the scene depicts her racing while holding back her orgasms. Her voice saying, "What I'm doing is crazy, but it feels good... (laughs)" is impressive. Additionally, the usual drive-time orgasm-suppressing masturbation is also included. Viewers will surely hold their breath at the continuous climaxes that come every time she pedals hard. Please see for yourself Miyu Aizawa's challenge of pedaling until she cums.