Photorealistic live-action cinematography, soft even indoor light, natural skin texture and visible pores, vertical 9:16 frame.

There are exactly two people in this clip and their roles never swap.
<Subject 1> is the MAN, whose eyes the camera is. He sits back on the bed with his legs open toward her. Only his thighs at the bottom edge of the frame, his pelvis, his pubic hair, his erect penis rising into the lower centre of the shot, and his two arms and hands are visible; his face is never visible because the camera is his eyes. His erect penis grows from his own pelvis and stays attached to his body for the whole clip. Only <Subject 1> touches the woman's breasts.
<Subject 2> is the WOMAN from the source image: long straight black hair with a blunt fringe, large bare breasts sitting above the cups of a black lace bra, a black lace garter belt at her hips and black lace-topped thigh-high stockings. She keeps this same face, hair, body and outfit for the entire clip. Her body has no penis of any kind. <Subject 2> never touches her own breasts; her hands stay on the bed or on his thighs.

A POV shot from the man's eyes looking down at <Subject 2> on white bedding. The same soft even indoor light, unchanged. The camera is fixed and never moves. The room is quiet: a soft room tone, the rustle of bedding, and the wet sounds of her mouth.

The motion has two beats. FIRST THREE SECONDS: <Subject 2> rolls onto her hands and knees and crawls forward across the bed toward the camera, her bare breasts swinging beneath her with each movement, her eyes locked on the lens, until she is close between his open thighs with her face just above his erect penis.

REMAINING SEVEN SECONDS: <Subject 2> lowers her head, wraps her lips around the head of his shaft and sucks it, sliding her mouth down the shaft and back up in a slow steady rhythm, her cheeks hollowing on each pull, taking it deeper each time, lifting her head off it now and then with a wet string of saliva before going back down. At the same time <Subject 1> reaches both hands down onto her hanging bare breasts and kneads them continuously, his fingers sinking into the soft flesh and releasing, the breasts squashing and springing back with each squeeze, never letting go while she keeps sucking.

Whenever the shaft is in her mouth <Subject 2> makes wet muffled humming sounds around it. Whenever she lifts her head off it she looks straight up into the camera with a bright playful smile, eyes crinkling, cheeks flushed, clearly enjoying herself and teasing him. Her expression stays cute and cheerful and never turns pained or blank. His shaft stays a single continuous organ with one glans, at her lips or in her mouth at all times.

<d>[Korean] 오빠 이거 내가 해줄게 가만있어</d>
<d>[Korean] 웁… 으읍… 웁…</d>
<d>[Korean] 가슴 그렇게 주무르면 집중 안 돼</d>

Avoid: the woman touching her own breasts, the man's hands leaving her breasts, the woman turning away from the camera, the penis entering her vagina, a penis growing out of the woman's body, the man's face appearing, the two people swapping roles, an angry or pained or blank expression, the camera moving, any change to her hairstyle, bra, garter belt, stockings or body shape, any third person entering frame, and any extra or deformed limbs.