Its staying on Itch, but Arcadian is having trouble securing funds to keep doing the project. Not that they cannot survive without it, but it helps out all the same.
Patreon, does not like children(even unsexualized ones) in games like this so they took down the page, which means income stopped flowing.
However, the game could still move to Steam so that there is a way to make money Although it looks like that won't HAVE to happen, it still might though. It's a tricky situation that Arcadian is kinda on pins and needles for atm, but for the time being, CK is not leaving Itch and is remaining free.