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New Special Price [4936→2090pt/yen] Runners Eros 4 Who's the JAV actress in this video? Amateur? Name revealed!

[4936→2090pt/yen] Runner's Eros 4 Director Matsumoto, an athlete fetishist, is determined to uncover the secret behind marathon runners' infinite stamina. This time, he enlists the help of Yuki (pseudonym), a dedicated female marathoner who claims to enhance her lower body sensitivity through daily physical training and masturbation. To reveal the true source of her endurance, she leads him to a riverside track early in the morning where she usually runs. Starting with warm-up exercises, he experiences her full training routine firsthand, observing her body's responses before progressing to marathon sex. To examine Yuki's physical constitution—how she remains unfazed even under intense summer heat—he attempts to test her with a vibrator. When asked if being brought to climax repeatedly with the vibrator would affect her stamina, Yuki confidently boasts about her high sex drive and claims the vibrator isn't enough, aggressively demanding a blowjob instead. Eagerly diving in, Yuki performs vigorous oral sex. The stimulation only heightens her arousal, and she passionately demands penetration. Climaxing repeatedly in various acrobatic positions, she rides him in her favorite cowgirl position while hydrating, occasionally dousing their overheated bodies with water to cool down during the sweltering heat. Their intense, endurance-testing sex continues without pause, driven by unrelenting passion.