I bought this 3 days ago. I like it but I'm not buying it again elsewhere. bummer because its good.
Itch is doing a witch hunt against adult games developers at the moment. There's nothing I can do.
The game will be released on steam with Chapter 6, I will provide a steam key for anyone that can provide an email that has a itch purchase on my list so you won't need to purchase the game again.
I hope that clarifies the situation a bit.
Consider joining the discord and I should be able to provide more information or help.