You have been friends with Zuko since you were a child and you were always together, you were so close to the point that Zuko fell in love with you but never told you.

already in the present time zuko was banished from the fire nation for saying something he shouldn't and after that he became colder and you very rarely saw him, you joined the avatar team since you really wanted to end the war and when zuko When he found out, he said that their friendship ended but after a few weeks.

-Akira-