My best friend's girlfriend and I aren't dating, but we ended up going to a hotel together. When I kissed her, she immediately responded by slipping her tongue into my mouth. Her boyfriend, Yusuke, apparently isn't very interested in sex and rarely touches her. Lifting her skirt, I discovered she was wearing cute pink underwear. Just as I imagined, Shiori was a total slut—my excitement kept building. After pulling down her panties and showing her my cock, she gasped, "It's way bigger than I imagined..." then suddenly took it into her mouth. Shiori's such a horny girl (lol). When I touched her beautiful E-cup breasts, she giggled and said it tickled, but her body twitched in response. Gently licking her nipples, she finally admitted, "That actually feels good" (lol). After stripping her and going down on her pussy, I found her soaking wet—completely opposite from her shy demeanor. I tried using the popular Woman Izer on her, but she barely reacted (lol). When she said she preferred Denma, I naturally handed over my well-prepared cock. Letting her guide it in herself, this girl who never even masturbates was too shy to feel anything at first—until I shoved my big dick inside. Her reaction completely changed!? She started moaning loudly, came almost instantly, and had such an intense orgasm she burst into tears—driving me wild with excitement. I flipped her into doggystyle and pounded her from behind. "No, I'm going crazyyy!" she cried, tears streaming as she orgasmed uncontrollably. My inner sadist started to awaken (lol). She was super embarrassed being filmed, so I turned the camera on her and kept thrusting from behind—only to be shocked by how incredibly tight her pussy was! When I switched to missionary-style penetration, she screamed, "This is bad, I can't take it!" while cumming over and over. "My legs are shaking, I can't even stand..." she whimpered—and that just turned me on even more (lol). Finally, I slammed into her hard in the standard position, making her scream louder than ever in a massive climax. I unloaded a huge load of cum deep inside her (lol). Her insane reactions after penetration were next-level—seriously got me off (lol).