Everyone in school knew to stay well away from Rin Kagamine.

She was the perfect mix of boy and girl, being a hyper violent video freak while also managing to keep a good look on at all times. Her grades never dipped anything below an A-, and if they would, Rin would have a panic attack and smash the hell out of her report card. People twice her size often squeaked hello when she passed by, intimidated by her strength and chivalry.

Which was basically the opposite of her brother, Len.

It seemed like Len had never been able to grow out of his 7-year-old self. He was scared of practically everything- from the dark to shadows, from bees to monsters in the closet. Rin often facepalmed in front of him and dragged him away from whatever was scaring him, often ending in Len screaming at the top of his lungs, saying something like "That was the scariest thing ever!" And clawing at Rin's legs, refusing to move unless picked up and carried away.

"You really need to learn to grow up," Rin said one day as she watched her brother playing with his dolls for what seemed like the 10th consecutive hour. Len looked up, scowling. "I'm 15," he said, annoyed.

"No you're not. You're still 5."

"Am not!"

Rin stuck her tongue out at him. "I'm pretty sure 15-year-old guys don't play with dolls." Len put down one of them, looking hurt. "B-but... Then, what do guys do all day?" Rin frowned. "Play video games. Listen to music. Text people. Things like that," she replied. Len's eyes lit up. "I do all of that!" He said indignantly. Rin rolled her eyes. "You text me. And only when you're near something you're scared of. The only music you'll listen to is from Dora and things like that. And the only video game you play..." her eyes wandered a bit as she thought deeply. Suddenly, Len started waving a game in her face.

"Project DIVA: World Tour? Really? Two-year-olds play this, Len!" Rin said. Len grinned. "But it's fun. Can you play with me? I wanna see how multiplayer's like."

Rin scowled. "There is no way-" Then her eyes went to her favorite game: Halo: Reach. Her scowl turned to a smile. "Okay. But on one condition."

Len sighed. "Does it involve sitting in the closet for an hour again?"

"No. If I play that with you, you have to sit and watch me play Halo with your eyes open. And you have to play with me."

Len's eyebrows shot up, nearly drowned by his messy blond hair. Then he grinned a very un-Len-like grin. "You're on," he growled, putting the disc into the Xbox.

A few minutes later, Rin realized she hadn't yet signed in. "What's the point of that?" Len asked. Rin rolled her eyes. "Even if this is the stupidest game ever of all time, I want some gamer points."

"That's pointless," Len said immediately. Rin snorted. "You're only saying that because you only have about 300. I have 4085," She said haughtily. Len shrank under her piercing blue gaze. "Fine..." he muttered.

LenLenSwitch has signed in-

KagamineCutie19 has signed in-

Rin had to admit, her brother's username wasn't too bad. In fact, hers' sounded girlier than his. Smiling, she turned to Len. "So, what do we do?"

Len picked up his controller and pressed the start button. "We pick a song, and then pick a person to sing it, and their outfit, and then we do what the screen says," he said smoothly, scrolling up and down the list of songs. Rin frowned. "How about 'Adolescence'? I love that song!"

Len blushed. "Uh. Okay, If you say so. And who do you want to sing?"

Rin scrolled down the list. "What the heck... Kamui Gakupo? Hatsune Miku? Who are these people?" Len shrugged. "It's random, I know. But there's still two more to unlock, and I heard they were twins like us! Anyways, take your pick."

Rin chose Miku at random, While Len picked someone named Shion Kaito. The game seemed really upbeat and fun, actually. Picking Miku to wear a black-and-pink dress, she pressed start and waited for Len to decide on Kaito's outfit. He picked out a suit and pressed the easy difficulty.

"Ready? Scared?"

"You wish," Rin replied. The screen flashed and she looked up. "Okay... So I press the button that shows up in the circle, right?" Len nodded. Readying her fingers, she looked up to see Kaito and Miku standing there, ready to sing.

The music started suddenly, mirroring the ticking of a clock. And as soon as that had started, Miku started a long scream as Rin pressed the A button.

Miku started singing the song at a quick pace, dancing in sync with Kaito.

We promised to dance together forever
but my growing breasts are making it impossible
Our flaxen hair reflects in our eyes
We run our hands through each other's hair...

Rin blushed. What kind of music is this? She thought weakly. Then Kaito started, picking up the tune:

In the same bed , we used to play...

Then both of them:

Us hand in hand , as if our hands were tied with thread!

As the song went on, Len's face was getting redder and redder, and Rin was giggling more and more as her brother sank further into couch, pressing buttons at random.

At last, the song was over. KagamineCutie19 won with 56793 points, LenLenSwitch with 35012 points, the screen said. Rin grinned. "Ha! I beat you at your own game-"

But the screen hadn't finished. "Congratulations! You have officially unlocked Kagamine Rin and Len!" And then the power cut completely, making Len squeak with fright. "I'm not going to be scared," he growled. "No, no, no-"

The TV flashed to life, displaying the following message:

"Good bye."