Before I say what, let me state that I haven't finished the second arc and I've only seen videos.
So, I'm pretty sure Old Cob says the world "Mirage" in his final speech. Guess where we've heard "Mirage?" Wysteria. Remember that cat lady? I'm pretty sure she says that she is from the world of Mirage. So be happy cat lovers, you may be getting a world with cat people as more then bandits and criminal masterminds!
Please keep in mind that this is only speculation and is not confirmed.