My son brought his friend Kousuke over, and I found out that he was using me as a tool while masturbating... Recently, Yuna has been feeling sexually frustrated due to her lack of satisfaction. She secretly takes advantage of him by riding him every chance she gets. However, even after multiple orgasms, Kousuke shows no signs of fatigue thanks to his endless stamina. As time goes on, Yuna starts to feel limited despite enjoying their daily encounters. Eventually, her body reaches its breaking point, screaming in agony as they continue to have sex... Note: Content may vary depending on the distribution method.