This is #24, No Time.
Enjoy!
"What are you doing?"
The teen looked up to find the curious face of the waterbender looking at him as he lay in the grass with a scroll in his hands. "…Reading." His eyes went back to the report he had to read before the end of the day.
"But, I thought you did that in your office? Why are you out here?"
Zuko looked irritably at his old friend and rolled his eyes. "Because, I want to. You know, shouldn't I be asking the questions? Where the hell did you come from, Katara?"
Katara smiled and sat next to the Fire Lord. "I jumped the wall." Zuko raised his solitary brow at her answer. "You should make them a wee bit taller."
"Even if I built a wall to the sky, I don't think I could keep you out."
The waterbender acted as if she were thinking about the probability of that. "Nope. Don't think that could happen."
"Course not." He smiled as he gathered the scrolls scattered on the grass and gave her his hand. "How did the Yun Yan archers take that?"
"Naturally, they had their bows ready. I waved."
The two casually walked through the hallways, laughing and making fun of the other. As the sun started to reach the horizon, the benders of fire and water sparred until dusk surrounded them. Inconspicuously, General Iroh and Captain Jee watched from the gardens.
"Hey General. Fifteen pieces says he'll propose by the winter solstice."
"Twenty says sooner." Iroh smiled mischievously while his nephew and the water tribe girl fell in a laughing heap as she splashed water into his face.
There was work to do.
FIN.