[Reference images]
<Picture 1> is the location; keep its layout and furnishings, with all surfaces clear of small objects.

<Subject 1> is the camera in this clip — only his hand and forearm appear in frame, in the sleeve of the outfit in <Picture 3>.
<Subject 2> is the woman with light brown wavy hair in <Picture 5>, wearing the skinny pants and the light blue chambray shirt in <Picture 6>.

Each person keeps the same face, hair and outfit whenever they appear.
bright morning office light

[Shot 1] framing=bust shot, chest up camera=locked (POV shot from <Subject 1>'s viewpoint). <Subject 2>'s face and shoulders fill the frame as <Subject 1>'s hand holds out a cup of coffee toward <Subject 2>, an arm's length from the camera. <Subject 2> is at her desk, seated, facing the camera. <Subject 1> (S1) says: <d>[Korean] 실장님, 아침 커피요.</d>
[Shot 2] At 00:02.333, framing=close-up on the face camera=locked (POV shot from <Subject 1>'s viewpoint). <Subject 1>'s hand keeps the cup extended toward <Subject 2>, steady at an arm's length from the camera. <Subject 2> is at her desk, seated, facing the camera. <Subject 1> (S1) says: <d>[Korean] 오늘은 설탕 안 넣었어요.</d>
[Shot 3] At 00:04.667, framing=close-up on the face camera=locked. <Subject 2> lifts her eyes from the monitor and takes the cup, one eyebrow raised, looking up toward the camera. <Subject 2> is at her desk, seated, facing the camera. <Subject 2> (S2) says: <d>[Korean] 설탕을 안 넣었다고?</d>

No text overlays, no subtitles, no watermark, no extra people in the background, no camera shake, no jump cuts.