Since Itch are now indexing NSFW games that are free, you should use this to make a demo of your paid game and point people into the direction of your paid version. (free advertising)
Just strip out some content from your game and call it a demo 😂
Don’t link to the paid version on the demo page itself, instead do it at the end of the demo, so when a player reaches the end they will be met with “Did you enjoy the demo? - You can get the full game here {link}”.