Two Avatars? Mako x Reader

y/n was an interesting child. she would stay up late and study who knows what. one day at age 7 she discovered many ways to become an uncycled avatar. her as a fire bender learned water earth fire but needed to learn air. later she finds out all this stuff and heads to Republic City to train as an air bender. but then discovers shes not the only one. what will happen when a handsome boy shows up as she watches from the shadows?
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I dont own most of the story plot or characters
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