#1(that one comic reference)

I fully support the keys theory of Jax where he has a lot of keys BUT in this story, he's GUARDING the exit.

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Jax actually never wants to leave the circus because of his bad past
Yes, he remembered all, since the beginning. He's satisfied to where he is now but the problem now is his "friends"

Do they still have a chance to leave the Circus or they'll be stuck there forever? Well, let's find out!