Zuko didn't think of Azula as his little sister. It didn't fit her. Little sisters were supposed to be gentle and innocent, but Azula was cruel and ruthless. A little sister should admire and praise her older brother, not insult him and call him a failure.
Zuko wasn't sure when he stopped thinking of her as his little sister, but he was pretty sure it was when he was six. Uncle Iroh had gotten him a pet dragon-hawk and Zuko had been ecstatic. He'd left Azula alone with the bird for a minute – just a minute – and had heard an awful, agonized screech. He'd rushed back into the room, only to discover his new pet lying lifeless on the floor, a smoldering burn mark on his chest. Azula had simply smiled and skipped out of the room.
No, Azula definitely wasn't a little sister. She was more like a demon.
And as Zuko watched Azula shoot lightning into the Avatar, he couldn't help but wonder why he would side with a demon.
Author's Note: Not much to say about this one... I'm kinda glad with how it came out, but at the same time I'm not...
I tried writing for that Jet story I thought of a while ago, but I can't figure out how to make it work... Oh well, I guess it'll just be a fic I poke at every once in a while.
Disclaimer: I'm neither Mike, nor Bryan, nor do I have any control over the series of Avatar. If I did, the third season would've started already.