Photorealistic live-action cinematography, soft bright daylight through white curtains, 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. Only his right hand and forearm enter the frame from the right edge, holding the base of a purple silicone dildo. Nothing else of him is ever visible — no face, no body, no penis. Only <Subject 1> holds and moves the dildo.
<Subject 2> is the WOMAN from the source image, on her hands and knees on the white bed with her back arched and her buttocks raised toward the right of frame, looking back over her left shoulder into the camera: long dark hair with a blunt fringe, a small mark on her left cheek, a black lace bra unhooked and pushed down so her bare breasts hang free beneath her, black lace-topped thigh-high stockings, a small dark tattoo on her right buttock. She keeps this same face, hair, body and outfit for the entire clip and never turns into anyone else. Her body has no penis of any kind. <Subject 2> never touches the dildo; her two hands stay planted on the bed holding her up.

The same white bedding, white curtains and soft bright daylight as the source image, unchanged. The camera is fixed and never moves. The room is quiet: a soft room tone, the rustle of bedsheets, and her voice.

The motion has three beats. FIRST TWO SECONDS: <Subject 1>'s hand presses the rounded tip of the purple dildo against her anus and holds it there, the skin dimpling slightly around it, while she stays braced on her hands and knees.

NEXT THREE SECONDS: he pushes the dildo in — the tight ring stretches open around the head and the purple shaft slides steadily inside her, deeper and deeper, until only the last part and his hand are left outside. At that moment <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 her whole body jolts forward so her hanging bare breasts swing and bounce beneath her.

REMAINING FIVE SECONDS: he draws the dildo part way back out and pushes it in again at a steady rhythm, in and out, over and over, her body rocking forward and back with each push and her heavy bare breasts swinging and jiggling underneath her the whole time. Her startled face melts into a flushed delighted grin as she keeps looking back over her shoulder into the camera.

Throughout the clip the purple dildo stays a single smooth object of constant length, shape and colour, held in his hand, going into her anus and nowhere else; her vulva stays visible and untouched below it. Her expression stays surprised and cheerful and never turns pained or blank.

<d>[Korean] 어 오빠 그거 진짜 넣는 거야?</d>
<d>[Korean] 헐 들어왔어 나 어떡해</d>
<d>[Korean] 천천히 해줘 가슴 흔들려</d>

Avoid: the dildo entering her vagina, the dildo turning into a penis, the dildo changing length shape or colour, the dildo leaving her body completely, the woman touching the dildo, the woman lying down or standing up, a penis appearing anywhere in frame, a pained or crying or blank expression, the man's face or body appearing, the camera moving, any change to her hairstyle, bra, stockings, tattoo or body shape, any third person entering frame, and any extra or deformed limbs.