you should probably be familar with both series in passing to read this
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28 Nov 2019
Thomas is the first Avatar after 100 years, in a world that has learned to live without one. As a nonbender raised in Republic City, he’s in an uphill battle to learn bending and prepare for the inevitable human-spirit war. With the help of Thomas’ new found family, they will band together to grow from their pasts and face the world.
The ATLA/Sanders Sides AU you’ve all been waiting for.