In a quiet residential area of Shinagawa Ward, I spotted a sex worker late at night and became intrigued. She carried a small bag and what looked like a larger one, giving off an unnatural vibe. I watched up close as she headed toward the innermost room on the second floor of an apartment building. Her actions when pressing the doorbell made it clear exactly where to infiltrate, almost as if she were guiding me. Such behavior wouldn't be possible in a large, upscale apartment complex. She appeared to be in her mid-twenties, with a clean-cut face and a sexy mole near her lips, exuding a well-balanced beauty. Her figure was slender, yet her chest measured around C or D cup, highlighting a shapely, curvaceous body. Her nipples were light pink, with small areolas adding to their charm. She was highly proactive and eager to please, licking the man's nipples with such intensity it felt like real intercourse. Starting with deep kissing, during cunnilingus she sensually contorted her face and writhed her body. Her sensitivity was high, clearly conveying her pleasure. After a brief exchange, she put on a condom and began full intercourse. In the "daishuki hold" position, she started in missionary, showcasing her exceptional service. In cowgirl position, she alternated between deep thrusting and grinding while passionately kissing. The session was long and deeply satisfying. Faint abdominal muscles were visible, and her natural pubic hair was a rare and appealing trait these days. The climax came with her performing a blowjob while having her nipples played with from behind, followed by handjob while her nipples were licked. I tried following her to find out where she worked, but after trailing her into a building, I couldn't identify her affiliated shop and eventually gave up, deciding instead to head quickly to a walk-in brothel where a 30-minute course would still be available.