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 hands and forearms 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.
<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.

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 has two beats. FIRST TWO SECONDS: <Subject 1> slides both hands under <Subject 2>'s buttocks, cups them and lifts her hips clear off the bed, tilting her pelvis up toward him so her vulva is raised and angled up at his penis. Her shoulders and head stay resting on the bed while her hips hang in his hands. Her knees fall wide apart.

REMAINING EIGHT SECONDS: holding her hips up in both hands the whole time, <Subject 1> thrusts down into her from above, driving his shaft deep into her vagina until his pubic hair meets her raised vulva, then pulling back until most of the shaft is visible outside her, then driving down again. He repeats this downward thrust at a steady rhythm without stopping, her whole body rocking and her breasts bouncing with each impact, her hips never returning to the bed.

Throughout the clip the point where his shaft enters her stays in the lower centre of the frame in sharp focus, 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. <Subject 2> looks up at the camera with her mouth open, cheeks flushed, an eager pleased expression.

<d>[Korean] 오빠 이 자세 너무 깊어</d>
<d>[Korean] 더 세게 박아줘 괜찮아</d>
<d>[Korean] 아 오빠 나 이러다 갈 것 같아</d>

Avoid: her hips returning to the bed, the man's hands leaving her buttocks, shallow strokes that stay at the same depth, a penis growing out of the woman's body, the penis leaving her vagina completely, 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.