2 part

Hey
I was wondering how many characters do you keep? Do you focus on upgrading 5 at a time? Do you upgrade all of your characters when you have a chance?
What is the best strategy to get higher ranking characters (other than just fighting which is obvious)?
I was wondering how many characters do you keep? Do you focus on upgrading 5 at a time? Do you upgrade all of your characters when you have a chance?
What is the best strategy to get higher ranking characters (other than just fighting which is obvious)?
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