It's about time I made one of these bad boys. I have never made a kaito x len fanfic, but I'll break the ice won't I? I don't plan on having this as a oneshot...dunno for sure...maybe I'll add chapters to it...we'll see.

Maybe Len Kagamine's rampage didn't start with the fact that he would forever be a shota. Maybe it started when Kaito Shion locked eye contact with him...

All in all, Len Kagamine and Kaito Shion both made a mess of each other.

And by mess, they mean mess.

This is a story of two unusual people creating an unusual love story.

The true rampage that made Len realize something.

He and Kaito would be more than rivals.

The blond twins followed their teal- haired friend down the halls of the large high school, chatting amongst each other.

Well, at least one of them was cooperating. Len on the other hand was being a real brat. His arms were folded, and he had the ugliest frown on his face. Today had not been a good day for the shota boy.

Rin frowned her own kind of frown and whispered, "Len, I don't see why you're still mad about what Luka-chan said earlier..."

Len huffed. He remained silent, giving his twin the cold shoulder.

Miku smiled and said, "Len-kun, it was just a curious question, you know how Luka can be..."

Len was still quiet, biting his lip.

He remembered the terrible scenario, all of it...

FLASHBACK, IN CLASS

"Len-kun..."

Len turned, and was unexpectedly greeted with Luka's chest in his face.

Len squirmed a bit, and murmured, "Lu...Luka-chan...!? Your chichis...!"

Luka pulled away and scowled. "Well that was a rude name for my boobs..." she grumbled.

Miku approached the two, just now catching the remark. "Is everything okay?" She asked.

Luka hurled herself into Miku's arms and muttered, "Len-kun's being mean...I just wanted a hug and he went all rude on me..."

Miku looked up at Len and said, "Len-kun...?"

Len felt his face heat up. Where was Rin to back him up...maybe he should've went to get the project supplies instead...

"N...Luka-chan, you were the rude one!"

Miku sighed and said, "Guys...be nice to each other. Luka, what did you do?"

"I only hugged him and he called my boobs chichis..." she retorted, a look of hurt dawning over her face.

Len couldn't help but feel guilt, and he sighed, "Sorry...okay?"

Luka released her teal haired friend and said, "Now...let's finish this project so we can go home-"

"Hey there guys."

Len flinched when he saw a blue haired boy staring right at him.

Didn't he address the rest of his friends? But why was he staring only at Len? And why those eyes...?

Len turned away, ignoring the thump in his chest.

Luka smiled and said, "Hey Kaito-senpai."

"Kaito-senpai? Why are you here?" Miku asked.

"I came to return your puppy to you..." he laughed, pulling a flustered Rin from behind him.

Rin stifled a nervous laugh and said, "Hey...got the stuff..."

Miku shook her head.

"R...Rin...such an airhead..."Luka murmured.

Len was quiet. It was as if the minute he and Kaito met eye contact, his voice left him...

Kaito flashed a white smile and said, "Well, she accidentally bumped into me...and I had to help her."

Len kept his eyes away from Kaito. Of course. Kaito Shion, the oh so popular senior of the school, more popular than anyone else in the school, was a heart throb to all. He was book smart and sporty , not to mention he was the most talented.

In Len's opinion, however, he thought of the blue haired guy to be an uptight, ungrateful horny little bastard.

Kaito slid next to Len, smirking with an almost seductive glisten in his eyes, and whispered in his ear: "Is that your sister?"

Len gasped as the warm air ran smoothly into his ear and along his neck.

Suddenly the room became silent as the sound of harsh contact with the floor stabbed the calm atmosphere.

Len sat there, arms stretched in front of him, panting as he managed to recollect himself, his face flushed red.

Luka stared, her hand covering her mouth. Miku stared as well, her eyes wide. Rin hid behind Miku, startled by the sudden noise.

Kaito propped himself on his elbows, staring at Len with a shocked look, his mouth hung open as he processed what happened.

Len could barely keep his breathing calm and steady, but it wasn't happening. He could still feel Kaito's breath climbing along his neck, and it was...to say the least...unusual.

"...Len-kun..." Luka whispered, slowly approaching the blond.

The other kids in the classroom suddenly began whispering, staring hard at Len as they began crowding him.

Len didn't meet eyes with Kaito at all, but turned to the other kids with a dull shade of pleading.

Miku suddenly stood up and turned to the crowd, "Look, they were horsing around, okay? Just some friendly guy bonding..."

Kaito stood on his feet, brushing his clothes off and looked directly at Len, who turned away. "Yeah...calm down guys." He chuckled.

A bunch of kids began crowding Kaito, mainly girls.

"Senpai, you scared us!"

"Senpai, we thought that kid was gonna fight you..."

"We didn't know you guys were such buddies..."

Kaito laughed and gave Len one more look.

Then he did something that made the blood in Len's face drain drastically.

He bit his lip and winked with a successfully sexy vibe, then left the room.

Luka stared at Len, as if she had seen the horror that had just come across the boy's face.

From the look she was making, it would seem so.

Rin came from behind Miku slowly, then walked up to Len. "Len...why did you push Kaito-senpai? Did he say something to you?" She asked.

Len suddenly felt everything come back to him, the blood in his face, his mind, as if nothing happened.

"Rin...what...?" He gasped.

"You pushed the most popular guy in school, Len-kun. You were about to hurt him!" Miku said, "What were you thinking!?"

Len turned from his friends. He had no idea what had gotten into him. In all honesty, he was sure that none of this would have happened if Kaito wouldn't have tried to blow in his ear like that.

Still...it did feel kind of good...

Len shook his head and said, "Forget it. It's over and done."

Luka finally broke out of her silent spell and asked, "Len...can you answer something for me?"

Len blinked, then muttered, "Okay..."

Luka folded her arms and whispered, "Did...Kaito-senpai...make you sexually frustrated?"

Len gasped. The words lingered in his head. Sexually frustrated? What did that even mean? Sexually frustrated...

"Rin-chan...does Len ever talk about girls?" Luka asked, turning to her loli friend.

Rin bit her lip and uttered, "Um...well...he wouldn't want me to say..."

"So then that's a no?" Luka murmured, "I know where this is going."

Miku raised a brow. "Luka-chan...what are you talking about...?"

Luka smiled at the boy and asked with a fist on her hip, "Len..."

"Do you like boys or something?"

END OF FLASHBACK...

"Ergh...I hate Luka for that!" Len growled, gripping handfuls of his hair as he entered an empty classroom with Rin and Miku.

Miku sighed and sat in a desk. "You should just ignore it. You know how Luka can be."

"Yeah...Luka-chan can be rude sometimes so..."

Len scoffed and pulled out the supplies. Of course he was upset. How dare someone ask him if he were sexually frustrated? And the fact that she asked about his sexuality...the nerve!

"I just wanna go home...and forget today ever happened. I wanna eat a banana and go to sleep..." he muttered, folding his arms once more.

Rin scowled. Len could be a real pain sometimes.

Len rested his head on the table and said, "Guys...can I do the rest myself? It's not much

..and I wanna be alone so I can think..."

Miku and Rin exchanged looks, then sighed in unison and answered, "Fine...don't overdo anything okay?"

Len nodded.

The girls departed, both frowning up, now in a mood about as bad as Len's. It wasn't their fault he was having problems figuring out his sexuality. For all they knew, he could be bi-curious or something. Eveyone went through it at least once.

Some embraced it more than others.

Rin and Miku decided to shrug it off.

They began making small talk, at least until Kaito passed by them, not looking their way at all as he walked by them.

Miku couldn't help but feel a vibe coming from the blue haired boy, and for some reason she found it...weird. It was almost as if...

Rin tapped Miku's shoulder and gave her a look, as if she were saying in a silent manner that she felt something unusual too.

They left it at that, but it never went away...

Len sat the pencil down, thinking about what had happened earlier...

It was natural to be sexually curious right? Maybe a little, right? As far as girls went, he only questioned Miku's cup size, and maybe even pondered over Luka's a bit more than Miku because, well, Luka was more...developed.

But as for guys...

Maybe it wasn't the fact that Kaito was so high in the social chart that made him freak out...maybe he was fighting his curiosity. Or...something like that. Rin mentioned it.

But when he asked Rin if she ever wondered, about other girls that is, she laughed and said, "Why do you think Miku's around?"

If she hadn't pointed out that she was joking, he would have thought cruelly of his sister for that.

He didn't like the idea of being sexually curious...

But...he hadn't ever kissed a boy before. Nor had he kissed a girl. He would have more of a chance with a guy than a girl.

Why would that be? Simple. 1: most of the girls he was surrounded by only acknowlged him as cute or shota. 2: There wasn't an ounce of male dominance in him. He would never be able to be manly when he was so small...

The door clicked open suddenly.

Len sighed. It was probably Rin. Sometimes she didn't understand when he wanted to be alone...

"Rin, I really want to be alone-"

**slam**

Len paused at the hand that smacked against the table.

He looked up slowly...

His heart skipped a beat.

Kaito stood there, smiling deviously with an almost evil tint as he gave Len a vague glare.

Len froze. What could he do? His whole body was ice. He could no longer move. His lips wre dry, and he couldn't speak.

A small choked sound came from his throat as Kaito leaned closer.

"Hey cutie."

The blonde gasped as Kaito buried his face in the golden hair, inhaling deeply.

He pulled away with a sharp shuttered sigh, his body shaking almost violently.

For some reason, seeing this caused slight tension between Len's legs.

Did this...turn him on?

Len looked away as a deep blush clouded his face. He didn't like this all of a sudden.

Kaito pressed his chest against Len's back, receiving a small whimper as he wrapped his arms around the other's neck.

"You were so weird this morning...pushing me like that...what were you thinking? Hmm?"

He whispered this softly into Len's ear, running his thumb along the back of the younger boy's ear.

It was honestly driving Len crazy, his face was a deep pink color as his heart beat in his ears.

He had to remind himself not to panic, that it was just a boy...just a horny, desperate guy who was obviously bored...

It wasn't like Len could do anything. He could feel his muscles tightening in an unusual place...

Kaito smirked and sat up, taking a few steps back.

Len opened his eyes. When had he closed his eyes? Did it feel that good?

Len stood up and turned to Kaito.

This guy...for some reason...

He just didn't like this guy!

Maybe it was because he had become aroused when Kaito suddenly stopped or something. In all honesty if that were the case he would just blame himself for being stupid.

"Wh...what the hel was that!?" Len exclaimed, balling his hands into fists.

Kaito smirked snd walked over to the boy. "You're a cutie..." he snickered.

"Senpai...you're unbelievable!" He yelled, "Wouldn't this mean you're lying to all those girls!?"

Kaito paused. He tilted his head to the left and asked," Lying?"

Len bit his lip, then continued, "Yes. All those girls like you, maybe even my sister, and you go behind their backs, doing THIS?"

Kaito's smile brightened.

"Len...that's your name?"

Len simply frowned and retorted, "Yes. So what!?"

Suddenly the older teen pinned the younger one against the wall, and smirked again, this time more devious than before, and leaned against the startled blond.

Len flinched as Kaito brought his lips to his ear:

"Girls aren't cute enough for me..."

What could Len do? Kaito was bigger than him, not to mention taller. It would never work...

Well...he could just kick this guy in the balls and run like hell.

Kaito chuckled and whispered, "What's wrong? You're shaking like a mad man...Do I make you nervous?"

Len whimpered softly, squirming under the taller one's weight, his attempts failed every time.

The blue haired teen pressed his chest against Len's, creating a delicious friction as their clothed nipples probed each other.

Len suddenly heard a moan, and Kaito pulled away, laughing in a low voice.

"Girls don't give in that easily..."

Len's hand clamped over his mouth. Had he made that noise? But it sounded...so slutty, not to mention...erotic.

"Well...that was hot." He sighed, nuzzling his nose against Len's neck.

"K...Senpai...please..." Len pleaded, turning away as he felt hot lips brush against his throat.

Kaito chuckled and pressed his lips against the other's to silence him.

Len's eyes widened, but he didn't pull away

Kaito's lips were soft, not to mention they were hot.

A slippery muscle entered his mouth, wriggling madly for dominance. Len could only gasp as his own tongue was sucked on, bitten, and teased.

He wrapped his arms around the taller one's waist, unconsciously grinding against Kaito's crotch.

"Ah...you're getting into this aren't you...".Kaito panted in Len's ear, then bit the lobe of it.

Len buried his face in Kaito's neck as the large hands did God knows what to make him feel so good. He had no idea what Kaito was doing with his hand moving his wrist in such a motion, but damn it felt good.

Kaito began swaying his own body against Len's and kissed his neck, then pulled him into another lip lock as he panted deeply.

"Len...touch yourself for a minute."

Len complied cautiously, running his hand over his clothed chest, whimpering as the friction made him grow hard.

Even if it felt good to touch himself, seeing Kaito with such a delighted staire caused him to moan softly.

"Good...good..." Kaito whispered, lifting Len's shirt up. "Wow...they're really stiff..." he uttered, looking down at the erect pink nipple.

He licked his lips and slid his tongue over one of the delicate buds.

Len let out a husky groan as the hot wet muscle teased his chest, shifting his hips against Kaito's.

The older boy suddenly growled and bit down on the nipple, causing Len to cry out, his back arched.

"You make the sexiest noises..." he hissed, reaching down to unbuckle the younger one's pants.

Len gasped. If he touched his area, there was no way they would stop. What if someone saw them? What if Miku and Rin were still in the building?

It was too late.

Another moan escaped him as Kaito slipped a hand into his underwear.

"Go ahead...make all the noise you want...I like it." Kaito chuckled.

Len felt his body grow weak as Kaito's hands moved in ways he never thought they could. It felt good...whatever he was doing...

"Ah...senpai...!" He gasped, grabbing handfuls of the other boy's shirt as he pulled him closer.

"Mm...nice...it's getting hard just by touching you.." Kaito sighed, yanking Len's underwear down to his ankles.

The blue haired teen smiled as he continued stroking the youngr one, inhaling the scent of his blond hair once more before kissing his forehead.

"You smell so good..." he moaned, "Like bananas...and oranges..."

The praise Len was receiving made him whimper, squirming as his body trembled.

How much more of this could he take...?

"Len...does it feel good?"

"Yes...please keep going..."

Kaito licked his lips and said,"You're so horny..."

Len could feel pre come leaking from the flushed head of his erection, the hot liquid running through Kaito's fingers.

"You're gonna come soon...aren't you?" Kaito whispered, planting kisses on Len's neck.

"Haa...I can't...take it...!" Len gasped, holding the taller boy tightly as he reached his climax.

"Go ahead..." Kaito murmured, sliding to his knees and right in front of the throbbing penis, "I'll swallow it..."

Len tried his absolute best to hold back, even a little, so that he wouldn't spray Kaito in the face, but it wasn't easy. He released with a shout, and semen squirted into Kaito's mouth. He swallowed every bit as he said he would.

There were a few drops that landed on Kaito's face, but he wiped hit off easily.

Len slid to the floor in front of Kaito, panting as his muscles relaxed. He was now in some sort of daze...

"Look...it's nice and hot...see?" The teen whispered, scissoring his fingers to show the white semen's stickiness as strings of it connect them for a few seconds.

Len stared at his own come, not even blinking.

"Want to taste it?" Kaito asked, bringing his fingers to Len's mouth.

Len obediently wrapped his lips around Kaito's fingers, sucking them softly. The taste was odd...and salty...but it wasn't necessarily bad. It was just...weird.

"Your semen has a healthy taste...it was thick too...you must not masturbate much."

Len pulled away with a string of white saliva. Of course he never masturbated. Why would he? Was there ever such a need...?

Kaito stood up and licked his fingers, then looked down at Len.

"We should hang out some time..."

With that, he departed.

That was when everything came to Len. Realization hit him hard in the chest.

He had just fooled around with a guy.

They made out.

Touched each other.

Kaito even swallowed his semen.

All the images flashed through his head.

"What have I done...!?" He whispered hoarsely, smacking his face with his hand.

Len Kagamine hasn't necessarily screwed up, but today has changed his life...

He pulled his pants up and fixed himself, still feeling blood rushing to his face as he left the classroom. He decided it was best if he didn't tell anyone, especially Luka, who would only rub it in his face that she was nothing but right the whole time.

He just hoped Kaito would do the same...

He remebered what Luka said for some reason...

Did Kaito-senpai make you sexually frustrated?

If he was ever sexually frustrated, he was sexually furious now...

**To be continued**

My my...Len sort of took on a tsundere character...I don't really know if there's supposed to be an intentional personality for the vocaloids so I just went with what everyone else thinks of them...chapter 2 may take a while since Christmas is four days away and all...besides, I need time to keep brainstorming...so...yeah. not my best fanfic but hey, new characters cut me some slack. I wanted to try a Vocaloid fanfic, so...

Anyways, I'm not very confident of this one, so I'm not going to say anything about reviews.