>>39879932I have no experience with this, but it looks like it's possible using an exporting plugin. Try this youtube series.
https://www.youtube.com/watch?v=JSdggnGtcmU>>39880174To follow up: Here's the most straightforward for Koikatsu tinkering imo
(For IRyS, I prefer the first but the 2.0 just got released:)
https://litter.catbox.moe/yiwpxs.zipGura, Ame, Kronii, and Mumei have MMD ported cards that I personally think would be better for porting, if you want them