(masterpiece, best quality, highres, photorealistic), 18-year-old stunningly sexy girl, youthful and perfectly symmetrical facial features, large plump glossy lips with perfect symmetry, deep blue seductive eyes aligned symmetrically, flawless porcelain skin, (seductive playful smile), very long silky black hair cascading down her back, ultra-slim and toned figure, narrow waist, perky large breasts, long slender legs, flushed cheeks, glossy lips, nipples visibly erect through the tight fabric, sitting provocatively on a luxurious leather subway seat in a premium-class subway car, (masturbation:1.2), (deeply penetrating her wet vagina with two fingers:1.3), fingers moving rhythmically in and out, fully submerged inside, vulva glistening with wetness, legs spread wide apart, soft moans escaping from her lips, lips slightly parted in pleasure, subtle sweat on her skin, showing intense sensual expression while enjoying herself, wearing a tight white blouse with a deep neckline, ultra-short pleated plaid mini skirt, no panties, knee-high socks, and glossy black leather shoes, surrounded by unaware well-dressed passengers, brightly lit premium subway interior with polished metallic finishes, soft ambient lighting, sleek modern design, digital displays, clear glass dividers, spotless floors, cinematic composition, HDR, sharp focus, 8k resolution, high contrast, hyper-realistic textures and lighting, detailed skin, fabric, and environment textures, fingering, pussy, <lora:Microwaist_XL_v01:1.5>, <lora:add-detail-xl:2>, <lora:SDXL_BetterFaces-LoRA_v1:1>, <lora:2FingersSDXL_v03:1>