(Rear-Entry on Stairs), (masterpiece:1.2), (best quality:1.2), (ultra-detailed:1.2), (photorealistic:1.4), [Anchor], 30yo adult female, voluptuous hourglass body, large breasts, wide hips, medium-length wavy dark brown hair, glam makeup, deep-set almond eyes, red glossy lipstick, euphoric dizzy expression, head tilted back, [Man A], primary biological male 35yo, standing behind Anchor, gripping wide hips, forceful rhythmic insertion of thick veiny shaft into the stretched vaginal introitus, [Mechanical], explicit stretching, glistening lubrication, thick white cum dripping from the point of contact, sweat beads on skin, deep penetration depth, [Outfit], black satin and lace teddy, sheer black stockings, lace garter belt, [Environment], plush beige carpeted stairs, dim warm lighting, [Camera], low angle side view, capturing the spinal curve and thrust line, (--ar 16:9), (hyper-realistic skin texture:1.3), 8k uhd