(masterpiece, photorealistic, 8k, high detailed skin:1.2), [Anchor], 32yo adult female, sleek dark hair, mouth open in a gasp, heavy-lidded eyes, [Action], gripping a thick black cylindrical dildo with both hands, deeply penetrating the stretched anal sphincter, [Mechanical Detail], explicit stretching of the anal rim, visible penetration depth, glistening lubrication on black silicone, detailed perineum under tension, [Outfit], tight red glossy latex bodysuit, reflective PVC material, high-cut pelvic opening, [Environment], modern interior, white vertical ribbed architectural wall panels, soft studio lighting with specular highlights on latex, [Camera], rear-three quarter view, medium shot, focused on pelvic interface and facial expression