One great 'Avatar the Last Airbender' dragon fanfiction is 'The Dragon's Apprentice'. It delves into a young airbender's journey to learn from an ancient dragon. The story is filled with exciting battles and spiritual growth, which are elements that are very much in line with the original series.
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.