Chào mừng bạn đến với GTA5-Mods.com

@Safek No way! This also worked for me, you deserve a medal.

For those who would like the "COWGIRL Sexy Loop Animation with movement" from Sinkra work with the Natural Vision Enhanced mod and the onigiri folder, just use a CodeWalker RPF Explorer, in folder "onigiri" and then "dlcpacks" create a new folder named "customanims" download the "How to add Custom Animations easily [Add-On] (customanims)" mod drag and drop the "dlc.rpf" file from that mod to the "customanims" folder you have created previously. Now in the onigiri\common\data folder there is a file called "dlclist.xml" open it and add a new line "<Item>dlcpacks:/customanims/</Item>" for example under the "<Item>dlcpacks:/NVE_vehicles/</Item>", save it.
Now from the "COWGIRL Sexy Loop Animation with movement" mod there is a "cowgirl@sinkra.ycd" file which you have to drag and drop to the "clip_mp_.rpf" in onigiri\dlcpacks\customanims\dlc.rpf\x64\anim\ingame. So now if you go to the back seat of a car this animation should work.

@ArtyrKar I do not think it needs to be updated, or at least I made it work with the onigiri folder from Natural Vision Enhanced mod.