Kindling AU has me cackling because Aang knows nothing about the royal family besides the Fire Lord exists, Katara and Sokka know exactly 1 thing more and it is not what the Fire Nation Royal family looks like, Toph knows more but is getting tripped up on the truth of “I’m not a prince.” And wrapping her head around parents that would so brutally kick their kids out of the house. It’s not till Suki/Hakoda/Iroh suggest putting Zuko on the throne that they find out.
Zuko is going to be an unsubtle little shit about his royal status, too. Like, "My mom called me Zuko, but Li's the name my father gave me. Mostly everyone just calls me Prince," and "hey Katara, if you need a fake name try Azula. It's the princess' name, a lot of girls your age got named after her. My sister's Azula."
Meanwhile, his unit: *collective facepalms, and can they please stop courting near-treason? Everyone knows Prince Zuko is dead*
Katara: Wait, your sister was named after the princess and you were named after the prince? ...The dead prince.
Zuko: I know, right? Probably why my dad changed my name.