Separate responses, I believe you were asking about the anime versions of the art? You choose realistic or anime after the cutscene, I don't think there's an option to change the artstyle without starting a new run.
Just dropping these links here (and reporting them) so that one of the mods can update the OP. Indie H-game devs tend to need more visibility support than other game developers after all.
Patreon:
You must be registered to see the links
(Though, it seems they're working on other game projects of theirs.)
DeviantArt: