At a spa in Odaiba, I approached a beautiful girl enjoying a selfie. Her name is Mayu! A lovely, healing-type girl who works at a railway museum. With a slender figure and F-cup breasts, her perfect body instantly sparked my interest in her measurements. As a professional body size evaluator, I convinced her—almost effortlessly—to take off her swimsuit. After all, you can't know the real size without looking and touching. I started by checking her hips, then played with her pussy, stirring her insides until she squirted, soaking my fingers. When she took my hard cock into her mouth, she skillfully moved her hands and face, showing off amazing technique. Mayu enthusiastically licked my balls—clearly a girl who loves cock. When I finally thrust inside her, she moaned cutely, twitching with pleasure every time I thrust up. Switching to cowgirl position, she started grinding her hips on her own, smiling blissfully from the pleasure. Her droopy, melted expression was so damn sexy. Though hesitant at first, Mayu quickly let her guard down and turned incredibly horny on the bed. When I asked if she liked sex, she shyly replied, "Yeah..." Fulfilling her desire, I pounded her with intense, relentless thrusts.