Author's Note: I love post-finale Kataang. This world needs more of it. :)
"You are a mystery."
Aang turned to look at Katara from his perch on the railing of Iroh's teashop. His eyes were sparkling with amusment.
"A mystery? Me?" He laughed. "I'm no mystery. What you see is what you get. Now Zuko, he is very mysterious."
The young Avatar winked at the newly crowned Fire Lord who frowned slightly, obviously irritated that he had been dragged into the conversation.
"Maybe." The waterbender stood and walked to where Aang was sitting, leaning against the railing. "But I know many things about Zuko."
They both heard a loud sigh coming from Zuko's direction.
"Like he is the new fire lord, he has a mother and father who were fire nation royalty, he lived in a palace, fed turtleducks with his mother, has a sister. See, I know many things about Zuko."
Katara leaned in closer to Aang, smiling at him, her eyes shining.
"But I don't know much about you or your background. Who were your parents? Your family? Who did you get your eyes from?" She kissed the tip of Aang's nose. "Whose nose do you have? Who does your smile belong to? You are a mystery."
Aang scooted closer to her and took her hand in his, intertwining his fingers with hers.
"Well, I have a few answers for you." He grinned. "You are my family. You and Sokka and Toph and even grumpy over there…"
He angled his head in Zuko's direction and laughed before leaning in close to Katara and kissing her softly.
"And my smile is yours. And it always has been."