Changing The Tides

Zuko and Katara's fates after the war seem pretty much settled. Zuko is off to become Fire Lord and ultimately marry Mai. Katara is off with Aang to travel the world and perhaps teach water bending. But could things be totally different? When was the moment where things started to shift? Follows canon, but adds a Zutara story. COMPLETE! (Art by beanaroony)