I approached a beautiful, muscular woman with a stunning physique who was stretching at the park. Her name is Kozue (24), and she works as an instructor at a nearby gym, knowledgeable about stretching techniques and muscle care. Even while talking, she continued carefully stretching her body. She told me she runs home every day after work and is very dedicated to body maintenance. Deeply impressed by her expertise, I asked her for a private lesson, and she agreed on the condition that she'd cooperate with filming in exchange for payment—so we began shooting. Once filming started, I had her take off her tracksuit to highlight her defined muscles. Underneath, her big, soft, bouncy tits were revealed. When I asked her to explain how pectoral muscles work, I gently massaged her breasts, drawing out intense pleasure. Inserting a vibrator into her pussy, she screamed in ecstasy, repeatedly crying out, "I'm cumming—! I'm cumming—!" Surprised by her extreme sensitivity, I then gave her a careful blowjob, making my cock rock-hard before sliding it smoothly into her wet pussy. Her incredible hip movements were amazing to watch, and her expressions of pleasure and physical reactions were absolutely breathtaking. You've got to see it for yourself.