A/N: Well, this was supposed to be a one shot, but three thousand words later I figured I'd cut it into two or three parts. I'm not sure just how long it will be. Anyway, I figured that there just really weren't enough SxH fanfics, and even though I'm a pretty shit writer, I thought I'd contribute.

So obviously this is yaoi, so if you don't like, don't read. I also don't own Kingdom Hearts or the Final Fantasy series. Duh. But on with the story.

Crowded Elevator

There are laws in the world which should not be broken. There is also quite a delicate balance between opposites, a balance that, if broken, can cause a bit of chaos to break loose in the world. It is evident, however, that because of the semi-chaotic state of the world, these laws and balances are frequently put to the test and broken.

This is where Seifer Almasy and Hayner Aldaine come into play.

It was simple enough; they were rivals – they hated each other. Seifer hated Hayner. Hayner hated Seifer. All was good in the world.

Hayner supposed that it began back when Seifer first moved into apartment 1204, two doors down from where he lived with his own family. Hayner remembered being excited, because he'd heard that a new kid was moving to downtown from the Sunset Hill area.

Hayner had been ten years old. He was a nice kid, though on the verge of becoming a bit troublesome – he was mischievous, and most of the time the annoying pranks played on his parents or classmates could fall on the shoulders of Hayner and his friend Pence.

He was still innocent enough – girls still kinda had cooties, though that one girl, Olette, seemed to be pretty cool. Really, he was innocent enough to totally not expect the new kid to be such an (not that he was supposed to use the word at the time) asshole.

The little blond haired boy had curiously poked his head out of the door to his own apartment, watching with interest as boxes were loaded into 1204. He stepped out of his home, closing the door behind him, and walked as casually as he could down to the other apartment (inside he was kinda nervous about meeting this new kid).

He was just about to knock on the door when it burst open with such a powerful force that Hayner was thrown backward, landing square on his ass.

"Ow!" He yelped, rubbing his sore backside, standing and wincing. Who was so p.o.'ed that they felt the need to practically break a door when they opened it?!

Hayner looked up, and laid eyes, for the first time, on one Seifer Almasy.

The first thought that Hayner had, while looking up into those cold blue eyes, was that this kid obviously something up his butt. He wore a black zip up vest and jeans, and his face was set in a scowl of annoyance. His light blond hair did little to take away how intimidating he looked.

"Watch where you're standing, punk." Seifer said, eyeing Hayner as if he were some sort of rat or something.

Hayner was not about to be outdone.

"Why don't you try not being a jerk?! You're the one who freaking rammed the door open!" the brown-eyed boy fired back, now standing with one fist clenched and the other hand still rubbing his tail bone.

That fall had really hurt.

The other boy's frown deepened, and inwardly, Hayner gulped.

"What the fuck do you know, lamer? Who the hell do you think you are?" he said, taking a step towards Hayner, who instantly took a step back. This boy had a mouth. Hayner was definitely not supposed to use those words.

After all, he was only ten. That and his mom was a little paranoid about these things. But he was, and always would be, determined not to let this kid walk all over him. Naughty language or no.

"I'm Hayner Aldaine, and I don't care about what I don't know or whatever the hell you're talking about," he said, the cursing making him slightly more brave. "But I do know that you suck. I was just trying to meet you 'cause you were the new kid. But I guess there's nothing to really want to meet." Hayner scoffed, turning around to leave.

"You little chicken-wuss!" Seifer yelled, immediately shoving the other boy with all his might to the ground and pouncing on him. They were wrestling and hitting, gaining scratches and bruises and pissing each other off more and more.

And that's how their parents found them.

So they'd both been grounded and gotten in trouble, but neither boy made the required apology to the other.

And, Hayner supposed, that was how it was supposed to be. From the moment they met, there had been animosity, then a fight. It was how it would always be.

At least, that's what they both thought.

Seifer had to admit, if only to himself (and never to anyone else, least of all chicken-wuss), that he had a grudging respect for Hayner. After all, no one had ever really stood up to Seifer before – at least not without getting their ass handed to them. And the blond Aldaine boy had put up a pretty good fight before they were wrenched apart by their dads.

But in the present, they still hated each other with a passion.

Except there was this strange thing that happened sometime around when they were both twelve to thirteen, where voices started breaking, their boy parts started doing funny things, and their thoughts turned slightly more interested in sex and what they knew of it.

With two apartments between them, each boy watched the same late night TV that they definitely weren't supposed to be watching... Hayner's mom had flipped out when she caught him watching two people making out and grinding against each other (she, for some reason, just couldn't get it out of her head that Hayner was still just a child), but Seifer's parents didn't make much of a big deal about it.

Really, he's only going to find out anyway.

So Seifer got 'the talk' first. And a few days later, he learned what the word 'fuck' actually meant.

Needless to say, he flaunted his new found knowledge like he was the master of all things sex, especially in front of Hayner and his friends Pence and Olette.

He and Hayner had been having an impromptu struggle, when Seifer, with his slightly bulkier body, pinned Hayner on the ground. Hayner pushed his struggle bat against the other boy's weapon as hard as he could, but the weight was just too much for him. Seifer jumped up and smacked the other boy in the stomach with his bat, before holding it over Hayner's head in a victory stance.

"I win, lamer," he smirked, relishing in yet another victory over the annoying blond. "Why don't you go cry to you're girlfriend so she'll fuck you again?"

Olette had immediately turned bright red, and Pence had coughed. Rai and Fuu snickered (they were the only people just as bitchy and sucky as Seifer was), and Hayner just felt clueless. He had no idea what 'fuck' really meant. It was a verb? What?

He rolled over, refusing to clutch his stomach from that totally uncalled for blow, and slowly got to his feet, glaring at the boy whose blond hair was now covered by a beanie.

"Olette's not my girlfriend, asshole. And why don't you go fuck yourself!" Hayner shouted determinedly, trying to kill Seifer with his glare.

Seifer and his little gang just started laughing.

"I bet you don't even know what 'fuck' means, shrimp. You're such a fucking idiot," Seifer smirked, laughing in Hayner's face.

No matter how hard he had tried to prevent it, Hayner was blushing. Because, no, he didn't know what 'fuck' meant.

"Of course I know what 'fuck' means, you jerk!" Hayner shouted, hoping the other wouldn't call his bluff. Everyone knew that Hayner's parents, especially his mom, kind of... kept him... well, sheltered was the nice word.

He couldn't help it if his mom still thought he was four, and that her delusions were slowly getting worse.

"Oh really," Seifer drawled, his smirk growing even wider, "Tell us then, please. I think we could all use a little reminder."

After a painful silence, Hayner opened his mouth to retort something that was probably going to make him sound like an idiot, but Pence came to the rescue.

"He doesn't have to prove anything to you, Seifer," he said, gripping Hayner's arm. "Let's just get out of here, Hayner," he whispered to his friend, and then more loudly, "Olette, let's go."

Seifer scowled, angry that his fun was leaving him, and called out baitingly, "Or maybe you should go fuck your boyfriend instead! I didn't know you swung that way, lamer!"

Pence had to forcibly drag Hayner back to their usual spot.

"Hey, Olette... Would you mind getting us some ice cream? I'll pay, but Hayner and I need to talk." Pence said, handing Olette some munny.

The shorter dark haired boy turned to his friend, and putting it as bluntly as possible, told him that 'fuck' was a crude term for 'having sex.'

"Sex?" Hayner asked, blushing.

"Yup," Pence nodded, "Sex."

The blond hesitated with his next question, but figured if he was going to ask anyone, it might as well be Pence.

"Hey, dude... You know how my parents are and stuff. So... Don't laugh at me! But, um... How does sex work?"

Pence almost went cross-eyed. Geeze! Talk about an awkward conversation... The brunet knew Hayner's parents were over-protective, but this was ridiculous. He was twelve years old!

"Er... Um, okay. I guess I can explain. You know the difference between boys and girls, right?"

Hayner rolled his eyes.

"I'm not stupid, Pence. I just don't know some things."

Pence decided not to make a joke about how those were practically the same thing.

"Alright," Pence said, thinking of how to best word his next sentence. "Well... you know how girls have like... umm... a hole down there?" Pence asked, gesturing to his own crotch area.

"Uh... yeah." Hayner said, going along with whatever Pence was saying. What kind of hole it was, he didn't really know.

"Well in sex – and it's supposed to like, feel really good, so hear me out – a guy takes his dick and puts it in that hole."

Hayner didn't really know how to react. But several really awkard questions later, he got the gist of it.

But here was the thing... By his thirteenth birthday, Hayner wasn't so sure he liked the idea of sex with girls. They didn't really do anything for him, and he noticed that when he was, you know, playing with himself, that he wasn't thinking of girls in particular.

What was kind of weird was that he was starting to think of guys more often. And he started noticing guys more often. Not to mention that when he was in close proximity with an especially attractive guy, there was an inexplicable blush that stained his cheeks.

Needless to say, Hayner just told people that he'd developed some kind of heat sensitivity, and that the blush was just part of that.

Not that anyone believed him.

That wasn't the worst part, though. The worst was that Seifer was attractive. And Hayner knew it. Hell, having to follow the asshole home from school everyday was enough to let Hayner know that Seifer had a nice ass, and was developing a great body.

The very worst, though, was when they both caught the elevator up to the twelfth floor at the same time. Hayner just forced himself to look straight ahead, trying and failing to ignore anything and everything that Seifer did or said. Despite his efforts, anything and everything Seifer said just pissed him off, got him riled up, made his stomach do flip-flops.

And unfortunately, Seifer never seemed to leave him alone. In fact, the older they got, the more determined Seifer was to annoy the shit out of the kid that lived two doors down from him.

The light blond haired boy would do evil shit to Hayner. Like hiding the spare key to Hayner's apartment in a different place, then swiping Hayner's keys at school when the other boy wasn't looking. Or turning Hayner's backpack inside out when the other boy left class, then putting all his books in it and zipping it up. Sometimes those books got their pages glued together.

It really seemed like Seifer went out of his way just to tick Hayner off.

And it worked like a fucking charm.

What the hell is his problem? Fifteen year old Hayner thought, peeling the stickers that spelled out 'lamer' off his locker. He just won't leave me the fuck alone.

It really was as if the somewhat older boy was just straight up targeting Hayner. He had been for quite sometime, really. Ever since they met.

Hayner wasn't one to just take that kind of shit, however. So there were struggle challenges started occasionally, beginning with Hayner bonking the older boy on the head, and once at lunch Hayner managed to switch Seifer's daily glass of milk with watered down glue. That had been priceless.

But those damn elevator rides were always full of taunts. Sometimes they ended up in a small shoving match, before the elevator would finally come to a halt on their floor, and they each would huff away, steaming, to their respective apartments.

One day it was especially bad. Lines were crossed that shouldn't have been.

"Have fun in your little three way today at school? I saw you and your two idiots wander off right when the lunch bell rang. Really, it's so fucking gross. Doing that at school, you fucking disgust me," Seifer scoffed arrogantly. "Someone really ought to kick your ass for that."

Hayner's guard was immediately up. He was also immediately pissed off.

"You're the fucking gross one, you psycho. We were actually peeling off those god damn stickers you left on my locker," Hayner turned to glare at the boy next to him. "What's your fucking problem, anyway? You're always pulling shit like that on me."

Seifer didn't even look at him.

"You just need to be reminded of how much you suck. Like right now, you're getting all cocky, trying to confront me." Now Seifer did look at him, smirking. "Bwave wittle Hay-ner, sticking up for his chicken-ass self. Run to mommy now, she'll give you a cookie, and the spankings you like so much. Oh, but wait, she's too busy trying to get you back into diapers to even give a shit about your life."

Hayner flushed, and his fists clenched tightly. His mom's delusions about Hayner still being a young child were nothing to joke about. She was getting help for it; right now she was in the hospital for her psychosis.

That was a really low blow Seifer had just taken.

Hayner turned around, and his fist flew, nailing the older, more built boy in the gut. He was probably going to get his ass kicked – no matter how much he didn't want to admit it, he was definitely the smaller of the two – but the jackass had deserved it.

Seifer slammed the 'stop' button on the elevator, clutching his stomach with one hand and grabbing Hayner's collar the next.

"Let go of me, you fucking freak!" Hayner yelled, his eyes wide as he took in the snarl on the other boy's face.

"Fuck you! You piss me off so fucking much!" Seifer bit out in return, his voice lower than usual, but it held the same intensity as Hayner's yell. He had Hayner pinned up against the door of the elevator, crushing him into it with all his weight.

Despite his rage, and his absolute hatred for the dirtbag pinning him, Hayner blushed. The full on contact, and in fact the entire situation, was making him hot. He didn't even want to know why.

But Seifer was turning him on.

He reacted fast, trying to push the beanie wearing boy off him, shoving as hard as he could, attempting to use the elevator door as leverage. But no matter how fucking hard he pushed, the jerk never wavered.

Seifer's snarl never left his face, but Hayner didn't miss the change in his eyes. Those ice blue eyes glazed over, and then they weren't looking in Hayner's eyes anymore, but at his mouth.

And suddenly Seifer's mouth was crushed on Hayner's.

Oh, fuck.

His first kiss wasn't sweet or chaste. It wasn't even passionate. It was sloppy, with teeth gnashing, and each boy literally trying to devour the other. As lips pressed together roughly, and tongues pushed their way into mouths, the kiss grew more controlled but no less chaotic. Hands gripped with strength enough to bruise, and tongues fought. Each boy kissed back as hard as the other, neither giving but both taking. They shoved each other around, never ceasing their kiss, but fighting to pin the other up against the walls. When Seifer rammed Hayner up against the wall opposite the elevator door, Hayner gave in, digging his fingers into Seifer's sides as he held on and ground his hips against the other boy.

He didn't know if he was really all that surprised when the blue eyed boy returned the motion, one hand slipping up from where he'd held Hayner's arms to grip the hair on the back of the boy's head, yanking on it to expose his neck.

Seifer's tongue and mouth licked hot, wet trails up from Hayner's collarbone to his ear, which Seifer bit with just enough force to make the other boy cry out. Both boys refused to moan, but the intensity of what they were doing made it harder and harder not to make noise.

Hayner was so turned on that he knew either he – or, considering their situation, Seifer – would eventually have to do something about it. So with his next move, he jerked his hips especially hard, yanking his arm from Seifer's grasp and slamming the older boy up against another wall. Hayner looked at the other blond with a predatory gleam, ready to pounce on him.

And pounce he did. But at that moment, as they hit the walls again, they banged against the elevator's buttons, opening the doors, allowing cold air to explode into the heat that the two boys had created.

Their kissing stopped, and Hayner shoved Seifer away, suddenly aware of everything that was going on and just how fucked up it was. He dragged his forearm across his mouth to clear away the saliva that had gathered there.

The brown eyed boy panted, gasping for air, as Seifer turned away from him, yanking off his beanie and running a hand through his hair.

Hayner darted out, not caring that he had ten flights of stairs to climb down before he'd be out of the building and away from what had just happened.

He just needed air.