If there is any TF themed VN game that's worth the $20, I would probably say that it's this one. Got from Patreon previously, but may pick up a new version again through itch when more content is out. :)

This creator has highly varying themes in their games, and in my experience, this one was a big hit, while another one greatly disturbed me more than anything. I couldn't stand the Slugs and Bugs storyline game when I tried it.. So if there's something you don't like, they still may have something else for your taste. If the mentioned alternative was my first game from the creator I honestly would probably not have ever returned. XD