AN: My first crossover fic!

I own neither of these shows, or the respective characters. If I did, this would be an episode, not a fanfiction.

Okay, maybe attacking Aang was a bad idea.

That was Sokka's first thought as he lay, confused and dizzy, on the ground that felt suspiciously unlike the grass he had ambushed Aang on.

He just couldn't help it. Not once since the two had met had Sokka been able to land a blow on Aang, sneak attack or not (granted it was only a year ago that they had first met, but Sokka was the best warrior in his tribe! He had his pride, and it was being totally and completely crushed by the irritatingly combined forces of Katara, Aang, and newly-appointed-Firelord Zuko. And Toph. Always Toph).

So maybe Katara's teasing had gotten to him a little bit. He wanted to land a hit, and what better time than when the goofy kid was meditating?

The glowing tattoos should have warned him away, but instead he figured it would be easier if Aang was in the Spirit World.

But it wasn't even like he would really injure the kid, he just wanted to get close enough to mark him with some ink so he would have proof that he could have hit him! And he almost did too! But right before he achieved him moment of glory, a ridiculously powerful gust of wind pushed him off-course... right into a circle of weirdness that levitated a foot off the ground.

Now, Sokka didn't believe in circles of weirdness. Especially ones that levitated. But the sensation of being smashed and pulled and torn apart and held together and... and... well, it was very realistic.

He thought it was probably the avatar spirit, maybe tossing him around in the wind until he was dizzy, using waterbending to mess with his blood flow, and dropping him on a rock platform just to make landing more painful.

But that's what happens to people who attack the avatar. Even fake attacking, just for bragging rights.

Stupid Avatar Spirit apparently couldn't tell the difference.

"Um, I'm sorry," a delicate voice said from somewhere above him, "do you need help?"

Sokka rolled over to better look at this person. She was obviously not someone he knew; she wasn't a guy, and none of the girls who talked to him said sorry even when they should, much less without provocation.

It was definitely a girl. But that was the only thing remotely normal about her. She wore clothes that seemed to be entirely made of wool, a white-pink fluffy sort of outfit with a fair bit of skin showing. Her hair was a startling shade of pink, and probably the weirdest thing was that something brownish and curvy seemed to be growing out of it.

Oh, yes, horns. Because that made sense. And if that wasn't super weird, the sky seemed suddenly covered with stars (even though it had clearly been mid-day when he was thrown to the ground) and it seemed there was no forest around anymore. He was lying on a large slab of marble- the floor, he deduced. He must have a concussion from Aang's surprize attack.

"Oh great, I'm hallucinating," Sokka said dully, closing his eyes. Eventually, Aang would wake up from his trance and get Katara to heal him enough that he wasn't seeing stars and girls in weird clothes.

Aries, for that was the name of the girl whom Sokka had just declared a hallucination, shifted awkwardly, not quite knowing what to do. The boy was confused, apparently, but she wasn't a hallucination, and now he had just closed his eyes and lay still as if to wait for the world to magically return to his version of normal. Should she get him up? Maybe tell Leo that someone had just dropped into the spirit world by way of magic portal...again?

"I'm sorry," the voice came again, and Sokka resisted the urge to crack open his eyes and look. No way was he about to encourage his obviously unstable mind and its stint of madness. "Do you think that maybe you should find out why you're here instead of lying there?"

Sokka thought on that. If he was right, and he was (because science), then he was here because he wasn't here because he had some sort of head injury due to airbending slice. And, of course, if he just explained patiently to his brain that this was all fake then it would disappear.

"Oh, I know why I'm here." Sokka stated, crossing his arms and making no move to stand despite his obviously uncomfortable position on the rock floor. Aries blinked in confusion and waited for him to continue; It wasn't often that people were sent to the Celestial spirit world, but never before had anyone shown up knowing why they were sent. "Obviously, it's because I'm not here."

"...I-I'm sorry, I don't understand..." Aries stuttered. Sokka let loose a put-upon sigh.

"Of course you don't. You see, I was hit in the head when I got knocked on the ground. This caused a hallucination that'll probably last until Katara gets here and heals me. Therefore, everything I see right now, the stars, the floor, you... it's all fake."

"I'm real... I'm sorry."

"You shouldn't apologize for believing you're real. All hallucinations think so. This one time, when Katara was ten, she got really sick and started hallucinating. She was convinced that she had a best friend named Fredrika, I mean, what a weird name. Probably from the Fire Nation; they all have weird names. Anyway, she wore shorts and bunny-shark ears, and Fredrika thought she was real too. Had a backstory and fake memories and everything."

Aries was real. She was sure of it. She had fought and laughed and cried just like any other living thing, and Lucy made sure she knew she wasn't just some immortal apparition. But... Sokka was just so confident, so sure. Maybe... was it possible that she was just a hallucination?

"B-but...I am real," Aries insisted as strongly as she could, starting to feel panicked. No no, she existed. All of the celestial spirits did... Right?

"Really," Sokka drawled, finally opening his eyes. He made quite a show of rolling them as he pushed himself into a standing position. "Then what are these?" He asked, tapping one of her horns.

"U-um-"

"Horns. Have you ever seen a normal person with horns?" He continued, not allowing Aries to answer his question as he gave her a stare that was somehow both condescending and pitying. "Well, other than the Firelord of course," he continued flippantly, "Zuko's should be coming in any day now."

-Back in the palace, in the middle of an important meeting, Zuko twitched. He had just been insulted. He could feel it.-

"And no one real wears clothes like that," Sokka continued, gesturing to Aries' fluffy getup.

Unbeknownst to Sokka, he was very effectively giving Aries an existential crisis.

What if he was right? It was all so logical. Who had horns outside the celestial world?

Loke's tear alarm was going off.

Nearby, some poor girl was about to cry.

He had developed this sixth sense during his time outside of the celestial world to better pick up girls. The best time to get them, after all, was when some idiot (especially if the idiot was their current boyfriend) brought them to tears. The best way to get a girl to fall in love with you is to comfort them in their most vulnerable moments.

Once he returned to the spirit world Loke had given up this tactic, but his ability was still perfectly fine.

And the most likely candidate for the girl setting his alarm off was Aries.

Aries had been through enough already. Anyone caught making her cry would have to pay the consequences.

AN: Aw, poor Sokka. He's so convinced that he's right... and he has no clue what's about to happen to him.