Choose to purchase characters, or
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I have loved this game for a really long time. But I get frustrated playing for a long time and saving monies or units and buying a package and getting duplicate after duplicate of low tier characters. I would love to see the implementation of a character purchase window, where you can buy a given character, OR once a lower tier has hit its max, allow it to be prestiged to a new star level via a gold and catalyst purchase, allowing further access to characters.
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then u will find out that ur gona need an massive/insane amount of resources/time/grind just to "gear" up your character