(masterpiece, best quality, photorealistic, ultra-detailed, highres, dim classroom lighting with chalk dust), 1girl, 1man, 18 y.o., cute and shy, long straight blonde hair, blue eyes, very sexy and curvy body with large breasts and round hips, pale skin with subtle glow, dazed expression with drooling mouth, on all fours on a desk, anal sex with a guy with a large penis, anus gaping, wearing a half-unbuttoned school shirt, lifted plaid skirt, white thong pushed aside, fluids streaming, in a classroom with chalkboard, desks, scattered textbooks, // S-Index 10,