Even the Southern Water Tribe, long left behind in the march of progress, grew beyond its humble borders into a thriving city. Zuko's reign was disturbed by the actions of the New Ozai Society, a shadowy group that sought Ozai's restoration and Zuko's murder.
Ursa, Zuko and Azula's mother, was also discovered and returned to her family - alongside Kiyi, her youngest child by her second husband. In these, we see the origins of Republic City, the multicultural metropolis that would become home to Avatar Korra, as the Fire Nation colony of Yu Dao, in which Fire Nation colonists and Earth Kingdom natives had become so intertwined as to be inseparable. This era is largely chronicled in the Avatar comics, which take place over the course of the handful of years immediately following the TV series' end.
