An Au, where Katara is found to be the last water bender, she is taken from her home and brought to the Fire Nation where she is thrown in front of Fire Lord Ozai, who takes her in, hoping that one day she could become a great asset in his war

*A Zutara fanfic* Kara has been living in a little fishing village in the northern Earth Kingdom for as long as she can remember--literally. She woke up on its shores nearly six months ago, and she knows that if it hadn't been for Aki, she'd be dead. She's accepted that her life is in this village now, whoever she may have been--to her mind, it's better this way. It's better not knowing. But then a boy comes to the village--a boy who carries himself like a man. He's different from anyone Kara's ever seen before, and he seems to know her, he seems to understand her in a way no one else has. His name, he says, is Lee, but he says no more than that, and Kara is lost. How is she supposed to reconcile the little she knows about herself with this handsome, scarred stranger? How is she supposed to know what to do, when she doesn't even know who, or what, she is? And, more importantly, how is the banished prince of the worst nation in history supposed to convince a girl with no memory--a girl that he believed to be dead because of his actions--that he's on her side, when he knows that if she ever remembers, she will hate him?

After the war, Katara is sick of following Aang around, she is sick of being called 'the avatar's girl' as if she was only some prize and not the powerful water and blood bender that she is. So Katara leaves the avatar and her destiny takes her deep into the Fire Nation where she meets a famed Blue Spirit that needs her help.