The Avatars Long Lost Sister

Mika is Aang's little sister and his world. when he tells her that he is The Avatar ,but he doesn't want to be since she wanted to be, she tells him that it's fine and that fate chose him for a reason, but he won't hear it.

He asked all the monks if their was a way to transfer it so he can give it to Mika, when their was no way, he thought she hated him for it and he can't stand it when she hates him, which she hardly ever does.

So he ran away and when he does the whole time Mika is trying to stop him, and then their is terrible storm and him, Mika, Mi her bison, and Appa fall in the water and he sees Mika unconscious and uses the avatar state and sealed him, Mi, and Appa in a iceberg and Mika, in a separate one.

Mika drafted to a little village in the North Pole, but what she found out, is that it has been fifty-two years since she has been in the iceberg and their is a huge war and the Avatar is gone.

She lives in the village and for some reason, she doesn't age. forty-eight years have past and Mika is with Katara and Sokka fishing and they find a huge iceberg. With someone inside...