Legends, The Moon?!
AN: This is a little less serious, but I hope I got their voices right.
Air
Aang had been told that all Avatars went to the North to train as a waterbender, or that they were born there. He never really thought about it then but it seemed a bit weird. The Southern Water tribe was closer to his home for one thing.
Then he ran, and he thought that no-one would think an Avatar went south. Then the storm, the water and then light. Then a girl. She was really pretty. But her brother didn't seem to like him at all. He liked Katara, but Sokka with his blue, white eyes kept staring at him.
(No Avatar went South, because truth be told, no Avatar had ever been able to convince any of the Ocean's chosen that they were trustworthy. Until Aang that is.)
Fire
It was strange to realise you were the most ordinary, or sane person in a group, Zuko thought. He really wasn't use to the feeling. Aang was Aang, no explanations needed there. Toph was scary, and he had known Mai, Ty Lee and Azula growing up. Katara was either pure sweetness or pure evil, no grey edges, and that had to be unhealthy. But Sokka took the biscuit. He wasn't a waterbender, but he still moon bathed all the time. He made his Uncle look like an atheist, with his way of talking about spirits. But the thing that really confirmed it to Zuko that he was the only one that didn't have a screw lose in the head? The way he called the Moon his girlfriend, and that no-one but him found that odd.
The first scene is pre-series and first episode, but the second one takes place in series three. Not sure about these ones, but I hope your reviews will help me out on that point.