Hey, iridscnt!
We're actually on the hunt for a new 2D artist (our current one, unfortunately, had a major health scare)! My game is an IF (interactive fiction), so it sounds like it would be perfect for what you're looking for/starting off light. Our former artist was working on individual art of the 4 ROs, so that would be your priority (i.e. these will be their intro images with their descriptions); there would be no CGs, in the traditional sense -- but if you wanted to make group shots/more artistic scenes, I'd be all for it. If you'd like to stay on + feel the vibe, that would be fab! Or, if you just want to do some one-offs for your portfolio -- that works too!
The game will be revshare, so there's potential monies your way if you'd like to link a kofi/something similar(you will absolutely be getting an artist credit). Will send a friend request if you're interested!