It's really exciting to seduce a girl with strong defenses. The thrill of navigating subtle negotiations, taking that decisive step at the crucial moment, crossing the tightrope—your heart races. The contrast between her composed demeanor at first and her later expression is strangely seductive and captivating. The girl we're introducing today, "Mai-chan," is one of those tightly guarded girls who eventually let go. She agreed to come along when I said I was looking for cute girls, but remained cautious, insisting, "I'll only stay for five minutes and then I'm leaving," clearly not seeking a boyfriend right now. She avoids conversations about relationships, and when I asked how she deals with loneliness, she coyly replied, "I'll leave that to your imagination." Even when talking about her clothes, she'd say, "It's like this within the visible range," refusing to expand the topic. Finally, she declared, "Well then! Five minutes are up," proving tough to crack. I hadn't even found out her underwear color yet!! The phrase "impregnable fortress" crossed my mind, but after desperately pleading that I wouldn't show her face, she finally let me see her bra. That pure white lace revealed a radiant cleavage that instantly ignited my desire. Her breasts were much larger and softer-looking than I'd imagined through her clothes—plump, squishy, begging to be groped and sucked. There's no way I can give up now!! Renewing my determination, I decided to face her head-on once more. Since she admitted she'd never used a vibrator before, that seemed like the perfect opening. I immediately slid the vibrator from her shoulder down to her upper arm. When I touched her chest, her expression softened slightly. Sensing progress, I moved the vibrator lower. Stimulating her pussy through her underwear made her squirm and moan—her childish reactions were incredibly cute. She's only 18, after all. Once she climaxed with the vibrator applied directly, there was no holding back—she completely let go. Now I could fully enjoy those breasts I'd barely glimpsed before, as well as her small, adorable ass. The fresh, youthful texture—firm yet soft—is unique to an 18-year-old. During the blowjob, she actively made loud, wet slurping sounds, generously coating my cock with saliva. Her sincerity, so different from her earlier resistance, was adorable—her smile was just too cute. All my effort was worth it!!! When I finally penetrated her, the tight, snug feeling of her small pussy was absolutely addictive. After switching positions and making her climax repeatedly, she ended up gasping for breath and smiling sweetly as she said, "Thank you very much!"—now this is the ultimate reward of street pickup! Enjoy Mai-chan's incredible transformation!