Photorealistic extreme close-up of anal penetration, A young jet black hair woman with smooth light-tan skin is on all fours or lying face-down on a couch, her full round buttocks dominating the frame. She wears black fishnet stockings that dig slightly into her thighs. A thick erect penis is deeply inserted into her anus, the shaft and base clearly visible, with natural wetness and stretched skin around the entrance. Her anus is tightly gripping the penis. In the lower right corner her face is partially visible, looking back toward the camera with her mouth slightly open and tongue out. Soft warm indoor lighting, blurred background with a blue-gray couch and light wall. Highly detailed skin texture, realistic folds, pores, and genital anatomy, sharp focus on the penetration and buttocks, 8k photorealistic, exact match to the original photograph, no stylization.