>>2896201Aviutl is the common MMDer software that is also the target environment for most PV kits. Wondershare Filmora is a fairly powerful one-time purchase tool (though I wouldn't say its capabilities rival Adobe After Effects), but lately they've been jewing it with paid assets, while free assets seem to gradually disappear from the library (unless they're moved to a different category, which is the case for at least some of them) even if you don't update, being squeezed out by something new, so you can only use the old ones if you have downloaded them previously (unless the above is true).
Not like I don't understand why they're doing that. Selling niche software once per user in a saturated market is not a sustainable business model. And there's still a lot that you can do for free with it.