The pose looks a bit strange, like it was edited by Ai or maybe I'm just overthinking it

If not AI then just bad animation.
Neru's ass clips into the guy's leg and crotch.

full animat version here.
https://x.com/thorru_/status/1946345488871047459
Because this GIF has not yet been approved.So I'm not going to upload it.

thefoxne said in comment #2581176:

The pose looks a bit strange, like it was edited by Ai or maybe I'm just overthinking it

its not ai, pose ref is a 3d model i posed myself, leg actually clips but i made it like this intentionally so you can better see her ass, cmon its art, it doesnt have to be realistic