A/N: *Title sucks, I know. Bear with me*

This is my first Vocaloid fanfic! I love, love Vocaloid, especially Len, and I wanted to do them some justice and write a fanfic. This is based off of the Story of Evil, which, I think, is the best Vocaloid song series.

If you haven't heard and seen the PVS, I recommended you do so ASAP.

Also, in my high school version, no one is going to die, because I'm simply not going to go that extreme :p

This prologue is about seven years before the actual story's setting.

Prologue

The Kagamine's Mansion

"Are you excited to see Len, Rin-chan?"

Rin looked up at her father and mother. Even though she was only eight, she hated them. Hated them with a burning passion.

"Of course," she replied simply. "It's been five years."

"What a smart girl you are!" her mother said happily. "Isn't she smart?" she asked, nudging her father.

Rin resisted the urge to roll her eyes. Their simplicity was disgusting.

Of course she was smart. Ever since they had taken Len from her and sent him away to some foster care in America, they'd pampered her and read her encyclopedias at night instead of normal books intended for children. They'd raised her with the utmost respect, like she was some princess. Soon, this was boiled in her mind, and she started to act like royalty, looking down at "regular" folk.

She was spoiled, a brat, but she would never admit this.

Rin liked to call herself a girl with high standards and rich taste, probably something her parents would never understand.

She sat on a couch in the family room, looking out the window, swinging her legs slightly. It was a bit nerve-wracking, she'd admit, waiting.

She usually never waited for anything.

"Do you want anything, Rinny?" her mother asked.

"I'm fine," she answered, bored.

"Are you sure?" she asked again, and it was starting to get on Rin's nerves.

"Actually," Rin said slowly, "could I have some water? Maybe a snack too?" she asked politely, putting on her winning smile.

Her parents nodded, practically swooning over their daughter. "We'll be right back." They walked out in their jittery way.

Rin just shook her head, and pursed her lips. However, when she looked out the window again, she saw an elegantly sleek car pull into their circular driveway.

She nearly jumped off the couch.

Rin fast-walked to the front door, and opened it. Inside the car, she could see someone open the door and step out. Someone with blonde hair.

"Onee-san!" Rin said, walking forward. "It's so good to see-"

Len stepped into view, a huge scar on his cheek.

"Len, w-what happened?" Rin stammered, walking forward, her tiny hands touching Len's scar.

Len didn't say anything.

Rin decided to drop the topic of the scar, looked at him, and noticed how much taller he was. She felt tears well up in her eyes. If there was one person she could show affection for, it was Len, her brother. She hugged him tightly. "I missed you."

Finally, Len patted his twin sister's head and gripped her back. "Me too," he said softly. He pulled away from her and looked her in the eyes. "I'll always be here to protect you now, okay? I won't leave again," he said, showing surprising maturity.

Rin nodded, wiping her eyes, smiling. "Yes. We won't ever be separated again."

And, to seal that promise, the two linked hands.

Yes, short prologue is short.

Anyway, hopefully you enjoyed that. I found it fun to write :D Rin and Len FTW!

The actual story will start in the next chappie.

Anyway, please review if you liked it, or if you didn't. Just no flames!