Mmmh, the game does show up for me if I search the name, so I'll have to ask others to try it out. Does itch.io have age authentication? Could that be why they don't show you adult games? When I am logged out, I can't find Caliross, so maybe there is something there. As for typing "adult", you have to use tags search for that (if you search "adult", a clickable "adult" button should appear near the top left, and that should take you to the games tagged as such).
In theory, I started out on a few forums and on Patreon for Caliross (my older games were/are completely freeware, instead), but yeah, I didn't submit my own game to fap-nation (good that it was a way for you to find the game, however!). I wonder if I should add a link to the Patreon in the game itself, just to let more people know.
Anyway, thanks for the suggestion, and for letting me know about the search. I'll have to ask around, and see if others can't see the game if they search for it as well.