In the large apartment flat on floor 28, the shouts of battle could be heard. Behind the living room stairs sat two teenagers locked into combat, eyes glaring at the screen before them.

"Die, die, die! You little creep!" screamed the girl, blue eyes blazing with wrath. Holding the remote closer, she mercilessly smashed the controls with the skill of a well-seasoned player.

The boy next to her narrowed his eyes and leaned to the left, moving along with his character sprite, Lucario, who was being driven to the edge of the platform.

Both of them had been battling it out the entire morning, even forgetting to eat breakfast, which sat cold on the kitchen counter.

Luka eyed the neglected banana pancakes and orange slices curiously as she passed the refrigerator. Sighing, she picked up a piece of the fruit from the plate and popped it into her mouth.

They wouldn't miss it.

Not that much, anyway.

With that, she grabbed the rest of the food and made her way to the sofa, book in hand. Making herself comfortable under the blanket she swiped from Miku's room, Luka began reading, trying to block out the howling and yelling from the other side of the wall.

"What the hell?! No way! You cheated!"

"And how am I supposed to cheat playing a video game? Is that even possible?!"

"I don't know how you did it! But there's no way I lost…!"

"Ha. Well, whatever, but you gotta wash dishes now. I'm going to eat something."

"Wha-?! Stop acting like you're my older brother or something! 'Cuz, news flash- you aren't."

"Yeah, if I were related to you, I'd shoot myself."

"What's that, you little creep?!"

"Can't hear me? Well, I said that if I-"

CRASH.

Luka felt a faint vibration, which she chose to ignore. Those two were so strange…
They were fine with each other in public- they even got along. During filming, they were the perfect pair: siblings, lovers, mirror images… Even the media thought that they were twins.
But after a few months of working with each other, they seemed more like rivals. It was actually kind of funny.

CRASH.

Hopefully they didn't break anything. They'd already gone through seven sets of Wii remotes. That and they would probably need all of their limbs intact for the next concert.
More sounds of battle ensued from the other side of the wall.

"OW! Y-You bit me!"

Switching on the TV, Luka cranked up the volume.
But they wouldn't do anything too extreme. Probably.

Trotting over to the white apartment door, Miku could see her breath come out in small white puffs as she fumbled for her key.
Kaito trailed behind, trying to balance several heavy, squarish boxes on his way up the steps. Only the very tips of his blue hair showed over the load of baggage.

After days of camping in line, they'd finally gotten their hands on five copies of the newly released Sword Art Online, a long-awaited MMORPG game that was the first for the Nerve Gear system.
But as soon as the store opened its doors, it was like a zoo.

Meiko had to practically shove people away while Kaito and herself made a beeline for the shelves.

But it was well worth it.
She couldn't wait to tell Rin and Len.

"Weeeeerrrrrre Hooooooooome!"

Miku could hear eager footsteps rumbling down the hall, along with some arguing and shoving.

"Ah!"
Rin's face appeared from the end of the hall. Covered with bruises and scratches, probably from some recent brawl.
"Did you get it?!"

Len followed soon after, still wearing a kitchen apron and covered with soap suds. He was still holding a half-washed spatula in his right hand.

Nodding enthusiastically, Miku grabbed an objecting Kaito's arm and hauled him inside.

Kaito felt like collapsing on the floor and sleeping for a thousand years.
Those stupid boxes were really heavy. And Meiko made him carry them all the way home while she stayed behind to go shopping.

But he still couldn't wait to try the game out. After a half an hour, several arguments and a fistfight, they'd finally managed to set up the NERVE GEAR system, avatars and everything.

"Okay, we need a game plan here!" shouted Rin, pumping her fist into the air.

Len ruffled her blond hair with his free hand, crumpling her white bow.
"Why do you take video games so seriously? It's not like they're a matter of life or death, you know…"

She glared at him, slapping his arm away.
"It's a matter of honor and integrity!"
The girl exclaimed, standing with one foot on the table, arms crossed stubbornly.

"Right, right, let's start already!"
Miku cut in, hopping up and down.

Plugging in the NERVE GEAR, Kaito laid himself down on the carpet.
The girls decided to take the two couches in the living room, so he and Len were left with the floor.

Well, to be fair, they could have just gone to their own rooms, but they all wanted to stick together for some reason, like it was some sort of special occasion.
Not like that really mattered.

Luka waved briefly to them before going back to her book. She had decided to sit this one out, even though there was an extra unused set for her. Her excuse was, "I have to keep watch in case the house catches fire," or something lame like that. Kaito just guessed that she was more interested in that book than she was playing games.
Whatever 'Just Be Friends' was, it must be a pretty good read.

He could feel Len shifting around somewhere to his right.
Miku was still reading over the instructions manual, fiddling with the NERVE GEAR.
Rin had already gone ahead of everyone and now lay unmoving on the sofa, immersed in the virtual world of Sword Art Online.

Heart racing, Kaito slipped the visor over his head.

"Link, start!"

End of Chapter!

…

I hope I did okay. Feel free to drop a comment.

Also, this is one of my firsts attempts at writing, so there's going to be a load of writing errors and grammar mistakes. Try to ignore them.

This will be a crossover of SAO and Vocaloid, but I should say that it will mostly be Vocaloid characters running around Aincrad, trying to beat the game. Making the main characters from SAO fit in without messing up the original plot would be too hard, but I might try anyway. And see if you can catch the billion song references I am going to clumsily add into the story! So far, I think I got in Children's War (Rin and Len arguing with each other) and Just Be Friends (The book Luka was reading).

And some important points regarding this first chapter (more like a prologue…)
-Rin and Len are not related, but they often fight like quarreling siblings.
-Miku, Kaito, Meiko, Rin, Len and Luka are all part of a famous band, called Vocaloid. They all live in future Japan, where SAO was recently released.
-Meiko stayed behind to go shopping, and Luka decided not to play the game.
-Luka likes banana pancakes! That's not relevant to the plot in any way, but whatever.