Disclaimer: All kagamine pr0n will one day belong to me. One day!

Well, this is RinXLen. Yes. In that order. Whaaaat. I like Rin being seme. D:

Actually, I wanted to publish this as a one shot but decided against it because I have so many to write (at least the brain me has a lot to write. The physical me is like meh, stop writing and be a worm). So yeah. I'll try my best(?) to update.

Enjoy. A collection of kagamine twincest smut. None of the stories here are related and can be read separately.

And. Only time will tell if I would actually write a sequel to Noitcelfer Rorrim.

Rated M for My ass should be on fire for waiting this long to update.

.The Purple Butterfly on his Shoulder.

In a corner of this room, I kissed a purple butterfly on your right shoulder.

My long eyelashes, crescent eye lines, and shining lips.

I will make you understand. We will cross the boundary together.

The harsh flare of the spotlight shone down on Len's face, creating shadows on his face. Len's arm outstretched forward as he sang his lines.

Migikata ni murasaki chouchou,

Kisu no shika ano heya no tsumi de,

Setsunai toiu kanjou wo shiru,

Fukyouwaon~!

His voice echoing loud and wide in the stadium.

"Hen, hoo're shtill heah?" Miku stopped in her tracks while having a leek flavoured bun in her mouth and her costume in her arms.

Len, after many years of practice, understood Miku's muffled language of "Len, you're still here?", chuckling as he replied, "Yeah, I want to do my best this evening during the concert."

Though difficult, Miku placed her food between two of her costumes and spoke normally. "Wow! Hardworking! But I'm sure you're good enough already, Len. You've been practicing nonstop for the past few days. Have some confidence!" Miku cheered for him, doing a clumsy victory dance, albeit hard as her hands were extremely full.

"Thanks, Miku-nee. Ahaha. You should go change. Or at least eat properly." Len laughed at her awkward posture. As there wasn't enough time, she resorted to multitasking. Her feet merely slipped into her unlaced boots as she did not bother to tie them, causing her to walk weirdly. Her costumes were piling above her arms and were almost covering her face, blocking her vision. And she was having something in her mouth. A leek flavoured bun, that's purple...? Wait. Shouldn't it be green...?

Len hopes she doesn't get food poisoning or something, or they'd get into big trouble if the lead singer were to be absent from the performance.

"Okay! You too! There's only around two and a half hours left for you to get prepared!" Miku replied enthusiastically. He looked at her placing the bun in her mouth again while she hurried off. He took the half empty bottle of water off the stool beside him and downed every last drop of it. Taking a short break, he looked around at his surroundings.

The stage was illuminated with spotlights and the backstage crew were testing the sound systems and placing props all over. The stage managers were doing final preparations and were all shouting here and there to speed things up.

I think I better get ready. He quickly rushed back into their own personal dressing room, where only the twins can move in and out of it freely, to change into his costume.

Len knocked on the door, just incase his sister was changing. He didn't want to walk in on her and catch her screaming his ears off and cause a headache. Wait. What was he thinking? This was Rin he was talking about.

As if she would even scream.

In fact, he believes she would get rather excited to get caught by him. Her twin brother.

It was a known fact that whatever Kagamine Rin wants, she'll use all ways to get.

Well, when they're alone anyway. Only Len knows about this manipulative side of her.

She acts like an angelic little bratty sister in front of everyone, but in front of him, she dons another mask. She becomes a seductive vixen.

It is so ironic that she wants to be the younger immature one when everyone's around and the sexy adult that moans his name when they're alone under their bedroom sheets.

He pressed his security tag against the security lock and with a beep, Len opened the door to be greeted with an erotic sight.

There she was, bending down, revealing her tight ass and yellow laced panties. Fuck.

"Rin..." He cleared his throat to gain her attention, but she still continued with her business. Len was contemplating on whether she was totally oblivious, or she was pretending to not hear him come in. But when she let out a moan, he was sure that it was the latter.

She slowly pulled up her knee length socks up her knee, her hands moving up her thighs, her fingers brushing against her ass.

"Len, can you pass me a new pair of panties? I feel so hot and wet right now." He watched as she pushed her fingers within the elastic band to slowly pull her panties down. Fuck. What the fuck was he thinking. Only a sight and he's imagining things already. And she's not done anything yet!

"Rin...stop it." Len closed his eyes tightly. This is how much she affects him; just by being in the room, she makes his imagination race. Gritting his teeth, he was trying his best to will his erection away while chasing away the sexy images forming in his mind. Think of something else, something disgusting, like Gakupo in his banana hammock...Fuck! My eyes they burn! Fuck! My eyes! Fuck!

Grumbling, Len tried his best to avoid anything that would compromise the coming performance. Len had been practicing for the past week and already long decided that nothing will get in his way of getting the concert done and over with without any distractions. When it's done, he'll head home, yeah, and relax under a nice warm bath. Yeah. He could already imagine dipping into the bath tub already.

"Stop what?" She asked innocently and looked back at him, her rear still facing him. It was like second nature to her, those years of pretending made lying as easy as breathing.

While removing his drenched t-shirt, he walked slowly across the room to his dressing table and picked up his shorts. It was an identical costume to Rin's, she had a skirt though.

His back was facing her yet his dressing table's mirror was reflecting what he didn't want to see right now. Her pink lips were slightly opened and her costume was showing more skin that it should in her bending position.

"Stop, stop whatever you're doing. I'm really tired today." He unzipped up his pants, his hands brushing against his slight arousal. Uhg, that feels so good. Len restrained from touching himself again. He quickly put on his clean new shorts and buttoned it up.

Rin looked at him bewilderedly, "Are you accusing me of seducing you?"

He looked at her in the mirror, crossing his arms, "Weren't you now." The balls on his heels supporting his weight as he made a quick spin to face her. They stared at each other for seconds before he gave in.

"Okay fine, I'm sorry for accusing you, I'm just. Kinda tired." He turned around to face the dressing table. Len proceeded to sit down when her hand caught his and turned him around. Before he could manage a word, she already placed her lips on his to kiss him teasingly, her small hands fisting in his hair. Leave it to Rin to use her teeth and tongue to try to arouse him.

He tried hard not to respond, though it took all his focus and determination. It was tough not to, with her lips and not to mention, body, pressing up against his. When she soon realized that he wasn't in the mood to play, she backed away slightly to give a pout, her pink lips forming a small frown. But that lump in his pants was quite hard to miss.

He coughed slightly and moved his hand to cover his erection, her eyes following the sight of his hand.

"I thought you weren't trying to sedu-" He was silenced by another hot kiss, this time using more force. She wrapped her arms around his neck to push her body against his, her leg gliding up his side to wrap around his torso. Between kisses, Rin whined, "Len, come on, play with me."

Rin brushed herself against his manhood and the fine hairs on the back of his neck stood immediately.

Ah, fuck this. He wrapped his arms around her back and responded back as fervently, his right leg going between hers. Rin replied by grounding her wetness against him, breaking away from the kiss to nip on his jaw.

Len moaned as he felt her warm lips relieving his bunched up nerves along his neck, her hot tongue trailing down to his collar bone and his shoulder blade. All those late nights practicing for the concert really did stress his body out. Her tongue was doing such a great job that he hardly noticed when she sucked down hard on his skin, giving him a small, but reddening, cute little hickey.

Between bites and kisses, she managed to let out, " Since when," Rin sucked hard again, earning a groan, "do I play fair?" She smirked against his skin, her hands moving lower to his ass to give it a playful pinch.

Through his half lidded eyes, he realized, when she kissed again somewhere between his jaw and his neck, that they were having a concert in almost two hours! Wait, make that one hour forty minutes.

Len pushed her away, gasping for his breath. "Rin! What were you thinking making a hickey on my shoulder! What the hell, you even left some on my neck!"

She licked her lips, "Showing off?" Rin looked down at her nails, her eyelashes batting cutely against her lower lashes. "I don't know. What else?"

He pushed her aside to check the mirror. Len fumed, he was supposed to wear a sleeveless costume! Now everyone would be able to see that reddish purple dominating mark that's gradually becoming more and more obvious.

"Uhg! You're so fucking horny, Rin!" He grabbed the concealer on the dressing table in an attempt to try and hide the love bites. "I don't know what to do with yo-"

He stopped abruptly when Rin hugged him from behind, her hands roving up and down his side. She kissed his bare shoulder, on the purple butterfly that she just made for him, slowly trailing up his neck.

"Len, ignore the purple butterflies and let's fuck already." She placed her cheek on his back while both her hands were trailing down his hips.

Len let out a light gasp when she started massaging his erection. It was already straining tightly against his shorts and his hormones weren't doing any help at all.

"Don't you want this at all, Len?" She rubbed his balls between his shorts as she pressed her hips more tightly against his ass. "Not. At. All?"

"If you don't want it, you can just say no...And I'll stop."

He groaned, feeling a little high, all his thoughts coming to a stop with every move of her nimble fingers. His hands quickly grabbed a hold on hers, stopping her effectively. He spoke softly through gasps, all his voice only coming out as a swallowed mumble.

"Speak out, Len. I'll stop right now..." Her hands removing herself from his erection.

"Mmh!" She knew all too well that the sudden stop of actions will only make him beg for more. Len could only muster all his will to moan, "...Don't stop..Rin...Please..."

Rin smirked, "Look at you. Who's 'so fucking horny' right now, huh? Getting so aroused by your own twin like that."

Len guided her hands back to his clothed groin as she massaged it slowly, grazing across his zip and down his inner thighs. He unzipped his pants in a sleek movement and she helped unbutton it. She teased him cruelly by moving slowly, her fingers trailing lightly up and down his underwear before puling the fabric down, revealing his length.

"Rin...please..." He managed.

"Patience, Len. Patience." She drawled out. As she brushed her lips lightly on the back of his neck, Rin could feel her twin brother shiver in anticipation.

She moved one of his left hand to hold himself, while her right hand played with his balls. The whole scene was reflected back at them in the mirror in front of them. Len can't help but feel a little more turned on by the sight of his sister ravishing him. Her free hand trailed up to play with his nipple, pinching with every stroke of his balls.

Rin was taking her own sweet time to torture him. She loves stalling with the foreplay, as she knows Len has very low resistance towards her touch. She was like a predator playing with its food. Teasing it before she makes the kill.

She pulled on the skin below his balls, kneading it lightly, as Len's hand moved up and down swiftly on his shaft. His expression could be seen in the mirror; his head tilted slightly backwards, his face scrunched up as if in pain. Watching him touch himself with her help was making her feel pricks up her neck. Rin couldn't help but press her thighs tightly against each other to rub against the constant tingle of her pussy.

The way he grunted and moaned told Rin that he was close, to which she replied by immediately tearing his hand away, stopping him from the last few strokes that would cause him to orgasm. She smiled wickedly.

"You are not allowed to cum without me." She announced, her voice laced with high authority.

"Fuckkkk! Rin...!"Len tugged his hand away from hers a little too late. He shut his eyes tightly as he felt the strong twitching of his cock throb away. Fuck. Fuck. Fuck. Fuck!

Fuckkkk! Who does she think she is? The fucking queen?

Len angrily turned around and stared down at his sister as she placed an arm on her hip, smiling sweetly. How could she? Enraged, Len roughly slanted his lips on hers, his hands going down to her ass, pushing himself against her hips, his erection throbbing against her stomach. Len felt his self control crumble as he rubbed his length against her. His denied orgasm was making him more impatient than usual. He couldn't bear the wait no longer.

She's such a fucking tease!

He felt her smirk on his lips as he hungrily kissed them, almost sure that the action will bruise both their lips. Len's hand went beneath her skirt, purposely pushing a digit into her pussy through her panties. His other hand held her neck, maneuvering it for better access. Rin moaned in protest, for his fingers were deterred by the lacy fabric of her underwear.

Not breaking the kiss, she pushed him back to sit on the dressing table, while she climbed atop his lap and ground her inner thighs on his weeping cock. Len created space between them to breathe out loudly through his mouth. How is it that she is able to arouse him so much with just simple actions. Rin saw his head fall back on the mirror with a dull thud as he closed his eyes in pleasure from the friction.

With some effort, Rin removed her panties while not moving from her position above his erection, grinding in a slow, lengthy pace, each move causing him to hiss a little while his hips bucked forward in pace with her movements.

Suddenly, Miku's voice echoed throughout the entire room through the speakers and the live TV broadcast. All the audience were cheering and clapping as she surprised them when she flew down from the top of the stadium. She was about to sing the first and second song for the night. Meiko and Kaito were in charge of the third song, the a fourth song was a duet of Luka and Miku, and the fifth song was by Gakupo. The twins were supposed to sing during the sixth song, 'Migikata no Chou'.

Which gives them approximately 54 minutes left. It takes them around 5 minutes to get to the stage from the dressing room if they run. 4 minutes to put on their clip on microphones.

That leaves them 45 minutes.

She leaned closer to him to whisper while nipping on his earlobe, "You know, if we're not quick, we won't make it to the concert."

Len's face heated up with nervousness and he quickly placed his hands on her ass, lifting her up. Rin was also positioning herself up above his cock, holding herself up by placing her arms on his shoulders. She looked up to him and gave a lecherous smirk. I win, Len.

He rolled his eyes, before deciding two could play at this game and smirked back before flipping her over, causing her front to press on the dressing table facing the mirror. Her eyes widened. Rin hardly had enough time to react nor brace herself when he thrust himself into her from behind.

"Nnngh...!" She let out a short gasp. Her walls stretched, his hot and thick member buried deep inside her. A growing warmth was pooling between her thighs as she felt his hips behind her and his cock throbbing inside her. Her heartbeat increased in pace as he leaned forward slightly to whisper, "No. I win."

Just three little words, three syllables. But it caused her thin body to shudder in anticipation, squeezing him with her inner walls. Rin caught a glimpse of his furrowed brows as he pulled out to thrust in deeply, her mouth unconsciously parting to gasp while they both felt hot pleasure sending tremors down both their spines. Len found himself suddenly very hungry for her body, his beautiful, twin sister's body as his hands ran up and down her back, then going front to pinch her nipples hardly. Never did it cross his mind that his senses pumped with anxiety would excite him this much. He almost forgot that he was usually the submissive one that needed the guiding and ushering.

Rin, on the other hand, was thrashing around screaming for him to pull out of her, her fingernails reaching back to try to scratch him. She couldn't stand the fact of losing to her own twin. Looking at her slender waist to her round ass, he couldn't resist and gave Rin a tight slap on her ass.

"Don't move. I'm in charge." He smacked her hard again. Judging by her reaction of gasping loudly and squeezing sweetly on his length, Len realized that his sister was getting aroused by him being so dominant. Well, there was always room for improvement. But not right now.

Len placed one hand on her back, while the other gripped the table for support. Observing Rin's face in the mirror in front of him, he pulled out quickly and slammed hardly into her, smirking when he saw her shut her eyes tightly. Gradually increasing his pace, his hard thrusting shook the whole makeup table, her body moving in rhythm with his.

She could see from the mirror that her twin was blushing hardly, inhaling every time he plunged in. What an erotic face he's making while he's pounding into me so hard. She tried to grab anything off the table to hold on to, but it was tough as it is with Len's forceful thrusting.

"Len..! You're hitting so deep! Ah...!" She breathed out loud, throwing her head backwards.

The heightened rush of adrenaline was making Len unconsciously move faster, his hips thrusting in and out of her quicker. And with a shrill moan, the built up pressure in Rin's abdomen released, her pussy clenching tightly on his erection, her breathing hitched as she gasped for his name.

"Nngh! Rin...! I'm...!" Len grunted before shooting his cum deep into her. Rin winced and shivered when she felt his hot seed hit her inner walls.

The room was filled with their heavy breathing and the cheering from the fans that boomed through the speakers.

Len placed both his hands on the table to regain his breath while Rin smirked at him from the mirror.

It was like she didn't care if there was a concert in 20 minutes as she grinded herself against him while he was still in her. Len felt himself getting hard again, but being the more level-headed one out of the two, Len pushed away his lust and made some distance between them.

She pouted, feeling his length sliding out of her, but she grinned when she saw Len finding himself a matching jacket.

"I'm glad Miku's singing was loud enough to drown our voices."

"Oh, shush."

The announcer shouted over the microphone.

"And now presenting, the Kagamine twins with their first song for tonight! Migikata no Chou!"

Everyone hooted and cheered for them as they sang. Their skin were more than a little flushed, but that could be mistaken for the warm atmosphere of the stadium. Rin was doing her short jig for the intro, and with every twirl she made, she unconsciously flashed Len her panties.

Even though Len improvised and added both a yellow jacket and scarf to hide his hickeys, they did not have the time to bathe nor wash up. They just briefly did their hair and put on some make up; there wasn't even enough time for her to clean up. And from this distance, not to mention she was also bending to blow kisses to the crowd, he could see some cum dribbling down her thigh.

Fuck. He hope that no one could see his forming erection. That would be extremely awkward.

Len looked in her direction without pausing to sing. Realizing his stare, she winked at him and blew him a kiss in return. She was doing it on purpose again! His face heated up embarrassingly and he turned away from her to face the cheering crowd instead. Len immediately decided that she deserves a little punishment.

Maybe later after the concert.

Guess that nice warm bath has to wait.

A/N: ...D: Di...did you like it...? I refrained from making a bad joke that'll ruin the whole story. "The fucking queen?" Well, yeah, she IS the queen of fucking. Well, in this story anyway...

A/N2: I'm sorry that I made Len win. Again. :l He's not supposed to win this time, but alas, my treacherous fingers. I like Rin to win. Till next time, Len!

A/N3: I kinda took here and there the English translation for the song and changed it to Rin's perspective (kinda?) for the intro. Don'thurtme.