28-year-old Sakiko is a beautiful woman who is active as an instructor at a sports gym. She is known as the most popular instructor at the gym where the fucker joined to fish for women. After three months, she finally became a sex friend, and she has an athletic build and a personality that always pushes herself to the limit. She has an unusual stoicism that can withstand sex until she is on the verge of fainting, and her pursuit of perverse pleasure is a must-see. This time, we were able to persuade her to allow us to film. She comes to the meeting in running attire, showing her stoicism, and as expected, her sweaty appearance is rather exciting, and we head to her room. As soon as we arrive at her room, we start a deep kiss. The emotions that had been building up explode, and the kiss reaches the ultimate level of eroticism. Her modest breasts and pink, lewd nipples are striking, and her appearance captivates the viewer. We remove her sweaty workout clothes and focus on her nipples, torturing her. The vibration of the toy makes her cum just from her nipples, and we can feel the depth of her pleasure. Adding a vibrator and an electric massager, we launch a crazy four-point attack, and she really goes wild. Even when she falls, she gets back up and desperately writhes in pleasure, which is irresistible to S lovers. Her nipples are fully erect, and even when they are inserted deep into her throat, she endures until just before she vomits, which is the ultimate perverted sex. The intense sex scene where she cums just before passing out from being strangled is a fusion of athletic stoicism and eroticism, and it's a thrilling experience.