My older sister, who works as a massage therapist at an orthopedic clinic, came to the scene. She is a rough and tough girl with no trace of the carefree, sporty girl she was in her student days. She is also tall and muscular, having experienced various sports, and now she is said to be an open water swimming athlete. She mercilessly teased the athlete's body, which had been forged both mentally and physically through harsh competitions, with obsessive caresses and toys, and thrust her huge cock into it! At first, she was blunt, but she gradually transformed into a soft, feminine face...