Hyper-realistic cinematic 8k video, interior of a Gor slave training house at night, warm flickering torchlight from wall sconces casting dramatic golden highlights and deep shadows on stone walls, thick furs on the floor, iron rings and chains visible. A mature voluptuous caucasian kajira (30-40 years old) kneels barefoot in the center, wearing only a wide polished bronze slave collar. She has long dark hair loose over her shoulders, extremely large heavy full breasts, and high on her upper left thigh is clearly visible a 3 cm healed brand scar: a stylized red-brown kef symbol (a bold K with a curling loop and small flame-like tail) burned deeply into the skin, raised scar tissue, dark rose-pink to brownish color, perfectly cicatrized, no fresh wound or ink appearance. A tall muscular Gor trainer stands before her, holding her head firmly with both hands, thrusting rhythmically and deeply into her mouth in powerful face-fucking motion. Her lips are stretched wide, throat visibly bulging, saliva dripping heavily from her chin onto her massive swaying breasts. Eyes look up submissively, expression filled with hunger and devotion. In the background, three other mature voluptuous caucasian kajirae kneel naked on the furs, wrists bound behind their backs, watching intently with expressions of arousal, envy, and submission. They wear only bronze collars and display the same 3 cm healed kef brand on their upper left thighs. Slow sensual camera movement circling the scene, intimate close-ups on stretched lips, bulging throat, swirling tongue, saliva strands, heavy bouncing breasts, trainers dominant grip, submissive upward gaze, and the watching kajirae. Explicit sensual erotic adult style, detailed anatomy, realistic fluids and physics, dramatic torchlight with strong chiaroscuro contrasts, immersive Gor slave training atmosphere, no text.