DISCLAIMER: I OWN NOTHING

This is my first Vocaloid fanfiction! I love Rin and Len! And because I recently found out about their mischievous side I thought what better way to express it than pranks!

"Where is all my ice cream!?" Kaito screamed as he stomped through the vocaloid household, searching for his beloved food. He came across Miku, and asked her for the whereabouts of his ice cream.

"I haven't seen it." She said innocently. "Why don't you ask Rin and Len? Maybe they saw it."

Kaito nodded in thanks and set off to find the twins, who were lounging in their room watching anime. Rin was sitting in the middle of the sofa and Len was sprawled across the space to her right. "Have you guys seen my ice cream?" He demanded hotly.

"No." Rin replied without looking away from the tv.

"Nope." Len said.

The frustrated bluette stomped down the hall again, in search of his next victim. Once he was out of earshot the twins burst into laughter. They'd hid his stash in another freezer in the basement as a prank; and because he technically still had it they hadn't really done any harm.

"How long do you think it'll take before he finds it?" Rin asked her brother in between laughs.

Len clutched his sides and responded, "I don't know. We might have to replace it while he's asleep."

"But if we do that then he'll know something is up and then interrogate us."

"So? He can't prove anything." Len said nonchalantly.

"But he can force it out of you."

Len scoffed, "Yeah? How?"

"Blackmail."

"And what kind of dirt would he have on me?"

Rin smirked. "The video of you going through with that dare Kaito gave you."

Len gulped audibly. "What dare?"

"Don't play dumb with me." Rin scolded. "You know exactly what I'm talking about."

Her brother flushed a deep shade of red. "How'd you find out about that?"

"I'm not saying." She teased, offering him a sadistic smile.

Hatsune Miku stood in her steamy shower, singing the lyrics to 'electric angel' and dancing along to the beat. She turned off the water and grabbed the towel hanging on the back of the door to the bathroom and wrapped it around herself; then using another towel dried herself off.

She turned around to grab her clothes and change, finding that they weren't there. Immediately she knew that two certain blonds were pranking her. Keeping her calm, she held onto her towel and walked to her room to grab another outfit. Unluckily for her, every piece of clothing she owned was missing.

"RIN! LEN!"

After hearing the angry tealette scream their names at the top of her lungs, the twins immediately left all of her clothes on their bed and hid in the closet. Seconds later, Miku burst into their room sporting a very large tick mark.

"WHERE ARE YOU TWO RASCALS!?" She yelled as she thoroughly searched the bedroom. After she was done scavenging she checked their attached bathroom and closet, finding both empty.

Temporarily giving up, Miku stomped out with her arms full of her clothes.

Once they were sure it was safe Rin and Len climbed out of their crawl space, which was cleverly hidden underneath the floorboards. "That was a close one." Rin sighed, happy she was still alive.

"Yeah, tell me about it." Len replied. "I think we should stay in here until she cools down enough to not rip out heads off." He suggested.

"Sounds good." Rin agreed. She smirked. "And in the meantime we can plot our next prank."

"Who's the next culprit?"

Rin was just about to say the name of one of the other Vocaloids when the two were interrupted by Miku as she stormed back in. "THERE YOU TWO ARE!" She screeched, now properly clothed.

"Aww, man..." Len moaned as he tipped his head back to stare at the ceiling.

Miku grabbed both of the twins by the arm and dragged them away. When she was done with them, they would surely think twice before pranking her again.

It was 2 hours before the irritated tealette let them go with their lives. Len rubbed his inflamed cheek, red from both the slap he'd received and the flustered blush he developed from being scolded like a small child. "Ow..." He whined.

Rin fell onto the bed and grumbled, "She has no sense of humor."

Len sat down next to her and sighed. "Are we still going through with the next prank?"

"You bet." Rin growled. "In fact, I'm tempted to prank her again for the licking she gave us."

"Are you insane!?" Len screamed, his eyes bugging out of his head. "We'll be eaten alive!"

Rin shook her head. "No, we just have to go into hiding for a few weeks, nothing major."

"Well, I don't know about you, but I'm not doing it." Len said defiantly, crossing his arms over his chest.

"Fine, have it your way." Rin said back. "I'll get you later."

As soon as Len heard that he subconsciously broke out into a cold sweat. He was in for it now. Though he had to admit, he didn't think Rin could belt out anything worse than Miku did just minutes before. Now he'd just have to be extra careful since he had no way of knowing when his sister would strike.

All done! Hope everyone enjoyed the first chapter. The second will be coming out soon. Any and all suggestions to make this better are welcome.