Avatar: The Last Airbender is indeed an original story. It has its own distinct style and narrative that sets it apart. The combination of elements like bending powers, diverse characters, and complex story arcs make it a one-of-a-kind creation.
Definitely not real. It's a fantasy world crafted with unique characters and magical elements that exist only in the realm of imagination and storytelling.
One great 'Avatar The Last Airbender' fanfiction is 'The Phoenix and the Dragon'. It has an interesting plot where the main character, a new airbender, has to navigate a world filled with political intrigue while learning to control their new powers. The character development is really well - done.