I am almost done with my demo. It's made using Monogatari. I am making an executable with yarn that can play on windows based systems, but I wanted to know if itch.io can web host it even if is NSFW.
If you go to “Edit Game”, and click on “Metadata”, on the bottom of the page there are two ticks:
Has sensitive content — This project is not suited for minors or the workplace
And
Show content warning — Show sensitive content warning before accessing game
For a NSFW project you probably want to check both. Make sure to explore all the available options in the “Edit Game” to describe your game as accurately as possible.