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 kneels between the woman's legs looking down at her. Only his thighs at the bottom edge, his pelvis, his pubic hair, his erect penis 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 at the lower centre of the frame 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, on her back beneath him: long straight black hair with blunt fringe spread over the white pillow, large bare breasts fully exposed, a small dark tattoo above her right breast, black lace garter belt 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 arms stay on the bed beside her.

A POV shot from the man's eyes looking down the length of the woman's body on a white bed. The same white bedding, white pillow, dark wooden headboard and soft even indoor light, unchanged. The camera is fixed and never moves.

The motion runs for the whole clip and both actions happen at the same time and never stop. <Subject 1> thrusts into <Subject 2>'s vagina at a steady rhythm, driving his shaft in deep until his pubic hair meets her vulva, then drawing back until most of the shaft is visible outside her, then driving in again, over and over. At the same time he reaches up with both hands, pinches her two nipples between his thumb and forefinger, and twists them gently back and forth, rolling each stiff nipple between his fingertips and tugging it lightly upward so the breast lifts a little and drops back with each tug. His fingers stay on her nipples the whole clip and keep twisting and rolling while he keeps thrusting.

At the first pinch <Subject 2>'s eyes go wide and her mouth pops open in a startled little gasp, her eyebrows lifting — a surprised, flustered, cute reaction, not a pained one — and that startled face melts into a flushed delighted smile. For the rest of the clip she looks straight up into the camera with that cute cheerful face, mouth open, cheeks red, her whole body rocking and her breasts jiggling with each thrust. Her expression stays surprised and cheerful and never turns pained or blank.

The point where his shaft enters her stays in the lower centre of the frame in sharp focus with the depth clearly changing between deep and shallow on every thrust, his shaft a single continuous organ with one glans going into her vagina and nowhere else.

<d>[Korean] 어 오빠 거기 꼬집으면 안 돼</d>
<d>[Korean] 아 젖꼭지 비틀면서 하지 마</d>
<d>[Korean] 그렇게 하면 나 금방 가버려</d>

Avoid: the man's fingers leaving her nipples, the woman touching her own breasts, shallow strokes that stay at the same depth, the penis leaving her vagina completely, a penis growing out of the woman's body, a pained or crying or blank expression, the man's face appearing, the two people swapping roles, the camera moving, any change to her hairstyle, tattoo, stockings or body shape, any third person entering frame, and any extra or deformed limbs.