Ebb and Flow: Tides of Destiny (Atla x Male Reader fanfic)

As much as Y/N hoped, his life could never truly be normal; being the oldest of three siblings was hard enough, on top of that his mom died, and his dad along with basically every other adult male in the village had gone off to help the Earth Kingdom fend off any attempts of invasion from the Fire-Nation, his little sister has magic water powers, apparently something called the "Avatar" has come back after being gone for a century...
Life is many things, simple isn't on the list apparently...
But we'll cross (or burn?) that bridge when we get there...