Are you guys serious? Is Itch really that hard to navigate?
Enable adult content in your settings, go to top-rated or top-sellers, or even regular popular and tick the box to the left where it says genres and select visual novels. Most of the top pages of vn are adult games. Yeah, only about 1 in 4 of all vn here are adult but they are very popular and therefore easy to find.
an extremely large collection of NSFW game assets AI images. While you might use them as assets, they are AI made. AI is not popular if you check the top pages of the popular vn. Oh, and AI content has to be clearly described as such on Itch (If your project involves automatic or AI generation, make sure it’s clearly stated in your project description).
Please do so. Any of your customers that is naive and does not recognise it as AI is basically scammed. And also risks bad consequences, since in turn, the game your customer makes must also be described as having AI content.