realistic masterpiece, 8k, highly detailed, a young woman in her late teens, fast asleep in a cozy bedroom, deep sleep, eyes closed, peaceful expression, messy hair scattered on the pillow, tangled in heavy white linen blankets and duvet, pajama pants pulled down to her mid-thigh, exposing her smooth round ass, large round buttocks, soft skin texture, dim moonlight filtering through the window, soft shadows, cinematic lighting, cozy atmosphere, sleeping position on her stomach, slightly turned to the side, high quality, photorealistic, skin details, soft focus background.