Disclaimer: Naruto belongs to Masashi Kishimoto.
A/N: I decided to give Sasunaru month a try in English this year, so here you have it. This is a collection of individual and mostly unrelated drabbles. Both Sasunaru and Narusasu tropes will be included and each chapter will have its own warnings, as well as a tag to specify if it's SN or NS.
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Prompt #27: Crossover (-)
Warnings: Mentions of genocide, implicit war, and that pretty much sums it up.
Avatar: The Last Airbender universe. Set just before and during the Air Nomad genocide.
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When Itachi had told him to look for Naruto and take him away, Sasuke hadn't known exactly what he meant or what to expect. But he trusted his brother, and he could tell something really bad was about to happen, so he didn't disobey him.
"Don't ask questions, and don't tell anyone," his big brother had said. "Pack only the essentials and go find Naruto. I know about your feelings for each other, and I care for him too, so there will be no time to lose."
"Itachi, what are you talking about?" Sasuke had started to become desperate, not understanding where this conversation was coming from.
"I told you not to ask questions. Just listen to me, Sasuke," the older one scolded him and grabbed his little brother by the shoulders. "Run away. Find Naruto and run away with him. Never come back to the Fire Nation, and never let anyone find out Naruto's an airbender."
"Wha- Wait a second, you're not making any sense!"
"Do as I say! You don't have time. Find a place to hide and don't let them find him, don't let them find either of you."
"Who? Don't let who find him? Itach-"
"I have to go."
And that'd been it.
Having a bad feeling about the whole situation, Sasuke did as he was told.
Naruto and him had been friends for many years. They met by chance while Sasuke was traveling with his family around the Earth Kingdom. Sasuke had found him playing tricks and pranks on innocent people with his airbending abilities, so he'd confronted him.
They weren't exactly friends at the beginning, but soon enough they started to warm up to one another and, after Sasuke returned to his homeland, they kept in touch. Sometimes, Naruto visited him in the Fire Nation, and those were the times they actually got to know each other better until a certain feeling started to bloom between them.
From his family, only Itachi knew he had an Air Nomad friend, and he quite liked Naruto too. And now that he was telling him to run away, Sasuke didn't know what to think, and yet he decided to trust his brother.
Naruto met him in the spot they had agreed, one small island in the southern part of the Fire Nation, mounted in his Sky Bison, Kurama. It took him a while to get there, since he lived in the Northern Air Temple, so Sasuke had already been waiting for him for a couple of days.
"Flameo, Sasuke!" the blond greeted him, jumping off his loyal companion and landing gracefully on the grass. "I came as fast as I could. What's that so urgent you wanted me to come as soon as possible? And what's with those clothes?" he asked curiously, tilting his head to the side at the sight of him dressed in baggy brown clothes, not like the ones he usually wore.
Sasuke didn't waste time to explain.
"C'mon, we have to go. Get that fleabag to start moving again," he ordered, blatantly ignoring Naruto to start climbing the bison's back.
"Oi, you bastard!"
"Let's go! I'll explain later."
He could tell Naruto wasn't happy, but they took off anyway.
Sasuke told him what Itachi had said, and the blond was even more puzzled than Sasuke himself was. However, if Itachi had told them to run, to hide, he must have had a reason.
They flew east, reaching Kyoshi Island, and decided to rest there for a couple of days while they figured out what to do next, and what the supposed threat was, until one day it happened.
"What's that?" Naruto asked, looking at the red colored sky.
Sasuke's eyes opened wide. "That's the Great Comet."
"The Great what?"
"The Great Comet. It passes close to the Earth every one thousand years. People say it can give us firebenders the power of one hundred suns."
"Huh? Sounds cool!"
The comet was a beautiful sight, and even though he could feel the power run through his veins, Sasuke decided not to test the strength the comet was giving him.
At that moment, neither of them knew the real significance the comet would have in the near future, nor the irreparable damages the Fire Nation would cause using its power.
Soon, Sasuke realized what Itachi really meant when he told him they had to hide. All the Air Temples had been destroyed in hopes of finding and killing the new Avatar, who was meant to be born as an Air Nomad after Avatar Roku's passing. The few airbenders that managed to escape or avoid the attack were now being hunted down, which meant Naruto was in danger too.
Sasuke promised to himself that would never happen. He would protect his most precious person, even if that meant going against his own country and becoming a traitor.
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A/N: I've been thinking how an ATLA and Naruto crossover would be FOR YEARS hahaha
I blatantly ignored some ATLA stuff here, like airbenders are supposed to travel freely around the world after they get their tattoos. Naruto doesn't have tattoos, since he didn't get to officially master airbending before the genocide, but still traveled to many places on his own and that's how he met Sasuke.
In this universe, the events follow the canonical timeline. Aang ran away and got stuck in an iceberg for 100 years, so neither Sasuke or Naruto know what happened to the Avatar either. They think he disappeared and the cycle was broken, like everybody else.
Itachi is just a soldier here, but he knew the Fire Lord was planning an attack because Fugaku is an Admiral here, so he overheard his father talking about it. He knew he couldn't stop the attack, so he told Sasuke to go find Naruto and run away together. He tried to warn the airbenders too, but got caught before he could send a message and so he was accused of treason.
And that's mostly it for now haha