Yui is a naive, airheaded girl with a classy demeanor whom we met through a dating site. Her speech is full of odd sound effects like "Waa" and "Ei! Ei!"—she seems almost terminally ditzy. Yet her natural goofiness and cuteness make you instinctively want to pet her, as if she were perfectly suited for this. Despite it being her first time, she shows no nervousness—instead, she's curiously fascinated by the camera, completely unfazed and unbothered, with little emotional fluctuation, never showing dislike or anger. She's easily swayed by the mood, especially when drinking or out at night, making her an extremely risky type in such situations—but for us, she's the perfect subject. Through online chatting, she casually agreed to filming, saying, "I'm free after school, so sure, I'll try it out." Physically, she's highly sensitive, absolutely loving being licked and turned on all over her body. She's clearly masochistic, admitting to having had perverted sex experiences like "with my younger brother's friend" and "in my younger brother's room." Yui was 18 at the time, and her brother's friend was just 15. That was her first sexual experience, and since then, she's awakened to lewdness. Because most of her partners have been younger guys, she's only ever used basic toys like vibrators. So when we tested her with a proper adult toy—the electric massager—she instantly melted, moaning "It's bad, it's bad!" over and over with a filthy, blissful expression. Her wetness was off the charts. Clearly, she's fallen hard for the vibrator. Watching her squirm under its stimulation while answering dirty interview questions is incredibly arousing. Don't miss this wildly perverted, lustful sex session with Yui, a girl so sensitive she switches on instantly. Her ahegao face when she's overwhelmed with pleasure is absolutely irresistible!!