Hello. I'm the author of the story; 'I'm a What?' and this is my new story. Enjoy.

Reincarnation was something many cultures believed in.

When you died, your memories would be wiped as your soul moves on to the next life. You start again, not knowing any of your past lives.

That's what a certain girl who laid on her deathbed thought. Her dull eyes were losing their light, but her mind wouldn't stop racing.

What were the chances that she would be reincarnated? Where? Who would she be?

Perhaps it was a last minute hope that she at least have the chance to start a new life. It was inevitable that she was going to die now. There was no point in trying to deny it all when the facts laid out.

She could feel her heart beat ever so slowly; giving her only a few more minutes before she would be gone of this world. There were people surrounding her, tears in their eyes as they already mourned for her. The senses in her hand were lost as someone grasped it.

'This is it...'

Her eyes slowly shut as her heart slowly came to a stop. Her body went limp on the bed and the monitor made a familiar but horrible sound indicating that she was gone forever.

The girl's last thoughts were; 'How strange would it be if I ended up in Naruto...'

Karin stared up at the man who had the same fiery red hair she had. His eyes were a deep emerald that illuminated kindness. Her own eyes (a matching colour to her hair), shifted to the small body laying on the cheap mat.

It was the body of a little girl who appeared to only be a year or two older than her. Karin could sense the bleak chakra slowly running through the veins, but it had no individual feel to it; letting her realise that this really was actually just a body with a barely living chakra system. However strange that was.

She watched as the man created a strange seal on the body's torso, the spiral crest of her long-dead clan was centered in the middle of the design as strange symbols expanded to wrap entirely around the upper body.

It was unlike anything she'd ever seen before, and it fascinated her. After the man had finished, the bespectacled girl took a closer look at the female body. Its hair was rather spiky and messy at the top; the untamed bangs obscuring its forehead and would hinder its eyesight if it ever opened them. Now that she had a closer look, the body's eyelashes were ridiculously long and its face was a lot slender than it should've been; as there was less baby fat than usual. She had to admit that the body was really pretty, even if there were strange ring-like tattoos in sets of three around the wrists and ankles.

"Hey, uncle." Karin called, turning around to face the man. His eyes shifted over to her, a kind smile formed on his lips.

"Yes, Karin-chan?" He asked with a deep but comforting voice.

"Why are there these marks?" She asked as curiously as a child would, lightly touching the body's wrist.

Something glinted within the man's eyes, but Karin couldn't identify it. She did note the fluctuation in his chakra.

"Karin-chan, come here."

The small redhead obediently walked towards the man and looked up at him through her tattered glasses.

"I want you to look after the body for me." He stated, chuckling at the way she made a childish face.

"But why? It's just a body." She retorted, confused.

"It's my daughter's body, you see." The man revealed patiently, looking at the motionless body on the mat. "She was born without a soul, and the seal I put on her would make sure that she gets one."

Karin blinked, looking between the body and the man who was supposedly its father.

"You may not get it now, but one day she's going to wake up and you'll have to help her adjust to the world. I'm not going to be around for much longer." He explained solemnly, patting the small redhead in his lap.

"Is she going to be my sister?" Karin questioned excitedly, eyes lighting up with childish hope. She had no one, and to have a sister would be the best thing in the world.

Her uncle smiled. "Yes. I'm sure she'd like that too."

The small redhead straddled the female body below her, her fingers pulling open the eyelids to reveal empty emerald eyes. She ignored the colour, instead focusing on putting the permanent eyeliner on the upper and lower waterline.

Ever since she got it, she'd been dying to put it on her sleeping sister and make her eyes look even prettier. But she knew that if she messed up, she wouldn't be able to try again; and so she practiced on the other kids. Karin got in trouble for making them look ugly, but it was worth it in the long while.

Minutes passed and she was finally done after creating a small wing on both eyes. It contrasted with her pale but flawless skin rather beautifully, though her slightly thick lips were without a pinkish hue as always.

"Done! Now you look even prettier, nee-chan!" She grinned, proud that the eyeliner was perfect on her sister. After a few minutes, she sighed, hopping off the body and walking towards the small water supply in the corner of her hut. "When are you going to wake up, nee-chan?"

It had been three weeks since uncle had left nee-chan in her care, and she still hadn't woke up. No one visited the small Uzumaki, who was somewhat of an outcast to the rest of her small village. They didn't hate her, but they thought that her ability to sense them was rather unnerving. It had been hard to be by herself, but now that she had her sister; she wasn't lonely. Nee-chan would wake up soon and they'd be able to live happily.

Sooner than she expected.

Karin jumped in surprise at the sudden surge of chakra from behind her, shrieking girlishly as the cold water hit her shins. "Dammit!"

A rather large gasp escaped the mouth of what was previously just a body without a soul. Karin's eyes widened as her sister woke up with a start, sitting up abruptly as she breathed for dear life. A rush of excitement ran through her body at the lively feel of her chakra.

'She woke up!'

Her sister groaned, placing a petite hand on her forehead. "What the hell?" She muttered, before sitting up and opening her eyes in shock at the surprisingly high pitch of her voice. "The hell?"

"Nee-chan!" Emerald eyes darted towards the voice, only to realise in horror that she was about to be glomped.

"Umph!" They both fell back at the force, but Karin laughed gleefully whilst she attached herself to her sister's waist.

"You're finally awake! I knew you'd wake up!" She cheered, thoroughly confusing the girl who had just been glomped by what seemed to be another girl who appeared to be only seven or eight.

"Huh?" Was all the girl could voice, her mind turning up a blank at this point.

"Oh, right." Karin released her sister, instead sitting on the older girl's legs. "Uncle said you'd be confused. My name is Uzumaki Karin! Your imouto!" She introduced herself with a grin, pushing up the horrible-looking glasses awkwardly.

Emerald eyes widened in confusion. 'Uzumaki Karin?! As in, Karin from Naruto; the manga and anime?!'

"Don't worry, nee-chan! I'll help you with all I can!" Karin announced determinedly, before faltering guiltily. "Say, nee-chan..."

Her nee-chan raised a fiery eyebrow, watching as the smaller girl fidgeted. "What's your name?"

'Oh.'

"My name is Shiru..." She replied softly, internally wondering if she should say her last name. Shiru was a rather Japanese name compared to her western heritage, but her mother was indeed of Japanese descent; so it made sense.

Karin beamed. "So you're Uzumaki Shiru! My older sister!"

The girl recently revealed as Shiru blinked, registering the strange situation. 'How did I end up here? Am I dreaming or what?'

It didn't feel like a dream at all, there was this strange energy running throughout her entire body at a rather alarming speed; and all the sensations like feeling Karin in her lap and her hands touching the rugged mat were quite real.

The older redhead felt like face palming. 'Don't tell me that I actually was reincarnated to Naruto, of all places? Was it because of my last thoughts?'

She should be dead, by all means. But the fact that she was alive, in a body that was definitely not hers gave her the only conclusion that she was reincarnated into a TV show.

"Uhm...nee-chan? Is something wrong? Do you feel sick?" Shiru's 'little sister' asked her with a tone of worry. Her voice brought the bigger redhead out of her thoughts.

"Ah...yeah. I'm fine." She replied a little awkwardly, suddenly noticing that she was speaking in Japanese subconsciously. 'I suppose it's a good thing I learnt it from a young age.'

The thought of entering this situation and wondering what the hell the jumpy redhead in front of her was saying was rather unpleasant.

Shiru blinked at the way her bangs were unruly and obscured some of her eyesight, taking note of her eyelashes brushing against the red strands. 'They must be rather long...'

"Hey, Shiru-chan."

At the mention of her name, her eyes shifted to the chubby-face Karin who grinned fondly at her. "Your chakra feels nice."

The older girl blinked, now sensing what seemed to be Karin's chakra. It reminded her of perfume, for some reason. "Yours reminds me of perfume." She admitted dully. What surprised her was that she could sense some weak chakra signatures nearby, each individual yet strangely bleak to her mind.

The younger girl positively beamed. "Really?! Yours reminds me of a silver key. How mysterious!" She cupped her cheeks dramatically.

'It's nice to know she's still as unique as she was as a teenager.' Shiru mentally sighed, though outwardly smiled slightly in amusement. The whole turn of events was surprising, but she was a girl who would just go with the flow. Most of the time.

After a few hours, Shiru realised that Karin was actually rather lonely, and her presence seemed to let the girl keep a smile on her face. The small girl with glasses kept talking about the village, the people, herself, etc. In all honesty, she was rather interested in the information.

Chakra sensing came naturally to Karin, and when she told the girl that she felt quite a few in the area; the small redhead jumped up in glee and yelled things about not being the only one.

'I suspect that I'm still rather pitiful in sensing compared to her.' Shiru noted mentally. She was more occupied with her own chakra, which gave her quite a few pains and aches here and there.

Karin stated that because her body was actually growing without someone to function it, her chakra reserves were making up for lost time and rapidly growing to suit the current user.

"Though I think that uncle's seal bound you to that body, so it's yours forever." She explained, adjusting her glasses as she poured the hot water into a cracked cup.

Shiru lifted the ragged-looking shirt she wore to see the certain seal her apparent sister was talking about. It had a familiar swirl in the center, with unfamiliar symbols surrounding it and extending all the way to her back.

"I don't know what the three ring tattoos on your arms and legs are for, though."

Sure enough, there were these thick black marking surrounding her wrists and ankles in sets of threes. It was most peculiar, but somehow it reminded her of branding; like an owner would do to a slave.

Perhaps they were.

"You mentioned an uncle," Shiru started, her tone sounding as if she was uninterested, but she wouldn't have mentioned it if she wasn't. "was he my father?"

Karin nodded enthusiastically. "He was a really handsome man, really kind too. You have the same eyes," she pointed out, "but yours are darker and more closed off than his. I..." her enthusiasm died down as she looked to the ground. "...I think he's not in this world anymore."

'Wouldn't be surprised if he went to my world.' Shiru nearly snorted rudely.

"But you and I will look out for each other! Like sisters!" The smaller redhead was a bundle of energy and even a little bit of sass.

"I suppose we shall." The taller redhead agreed absentmindedly.

A few weeks had past since Shiru's mysterious entrance to the Naruto world, but things were relatively good for a while. Karin had taught her how to hone her senses, and they often trained in the forest to sense the animals that were around. She wasn't nearly as good as Karin, but it was an improvement.

Getting used to a smaller body wasn't that hard, not when it felt stronger than her previous one. It could've been the unique traits that Uzumaki people come with.

Unfortunately, they had both sensed a huge amount of people coming towards them on a day they were in their small hut.

"That's a lot of people." Shiru muttered softly, vaguely uncaring of their approach.

"I think we need to hide, nee-chan..." Karin suggested worriedly, grabbing her sister's arm and pulling her up with all her strength. It was wasted since the older girl stood up by herself. "They don't seem friendly."

Trusting Karin's judgment, Shiru nodded and let the smaller girl lead her into the forest where they wouldn't be found. Frankly, neither of them gave any shits for the rest of the villagers.

It was only in the few minutes of them finding a place to hide that their village was invaded by a small army. From the trees above, they watched as the land and the villagers burned to ash; both expressions impassive to the slaughter.

If any of the people below had seen them, they would've been unnerved by the strange way they hadn't reacted to the slaughter and the screams. Two small girls who watched as if they were bored was just plain unnatural.

Once the worst was over, the two redheads climbed down from their hiding spot and stood side by side as they looked at the rubble that was once their home.

'Not much of a home...' Karin sneered in her head. Her eyes looked up to the rather intimidating chakra signature coming towards them, and nudged her elder sister.

Shiru blinked, looking ahead of the smoke and concentrating on sensing whatever it was Karin had already found.

Her efforts were null since the one she'd be looking for was standing right in front of them, a familiar flick of a rather unnatural tongue reminding her how much of a weirdo this guy was.

'Not that I can say I'm normal,' She admitted in thought.

Both girls analysed the man who could only be Orochimaru with varying expressions. The snake sannin looked with unshielded curiosity at their similar yet different appearances.

The girl with the glasses gazed up at him with awe, and the taller one with the unkempt and long hair stared with a glint of hidden knowledge. They both shared the fiery red hair colour that reminded him of the Uzumaki clan members.

'Interesting...' He purred mentally, before twisting his lips into an almost deranged but polite smile.

"Hello, girls..." The man greeted them with a flick of his tongue, smile widening at their curious reactions. 'No fear at all...'

"Hello, sir!" Karin greeted enthusiastically, a certain sparkle in her red eyes.

"May I inquire as to how you survived, hm?" He questioned the girl who spoke, tilting his head slightly. No one else survived but these two. How, though?

"We both sensed lots of people coming towards us." She explained with a proud grin, wrapping her arms around the taller girl's.

"Karin was the one who sensed their hostility." Shiru added with a nonchalant tone, not wanting the snake to think she was as good as the small girl clinging to her.

"Oh, shush nee-chan!" Karin chided her sister angrily. "You just need practice and you'll be as good as me in no time."

Orochimaru watched with amusement as the older girl simply shrugged.

"Well, Karin-chan..." He started softly, bringing their attention back to him, "would you and your onee-chan like to accompany me back to my home?"

Karin's eyes lit up excitedly, whilst Shiru's once again glinted as if she knew something he didn't.

"Only if you make me your apprentice of sorts." She spoke up, mysterious emerald eyes meeting with golden snake-like ones. Orochimaru raised an eyebrow.

"Apprentice?" He repeated, a small smile indicating his amusement to the suggestion. "What makes you think you're capable of being an apprentice of mine?" The snake sannin challenged the small girl, who refused to break eye contact.

'Brave, I see...'

Shiru's lips formed a small, secretive smile. "Maybe I am, maybe I'm not. The easy solution is to see if I am or not. You don't lose anything if I'm not, but you'll gain something if I am."

Karin remained quiet as she watched the exchange. Her sister was surprisingly cunning. The tall snake-like man seemed to be amused by that as well.

"Well...it's a tempting offer." He purred, deliberately taking his time as if he was deciding.

Taking on an apprentice could have its uses in the long term of things. The girl herself seemed to be a rather interesting creature herself, as well as her little sister. As she had said, he wouldn't lose anything if he didn't deem her worthy; but it was quite gutsy to basically say she's disposable to someone like him. Though how would a child know what he was like?

"Perhaps I will. What's your name?"

"Uzumaki Shiru."

Unsurprising, but definitely a bonus.

Karin stared at Shiru who sat crossed legged on her bed, eyes shut in concentration. Now that the smaller redhead had gotten new glasses thanks to Orochimaru-sama, she could fully appreciate just how pretty Shiru's face was even if her hair was an unkempt mess.

It was nearly a year since they were taken in by Orochimaru, Karin was assigned to be a jailer for the Southern Hideout, where most of the prisoners were kept. Shiru had successfully been appointed as the snake sannin's apprentice, and often traveled with him; leaving her alone a lot of the time.

Today was one of the rare days both her master and sister had come to rest at the hideout she was located at, but her elder sister seemed to be more preoccupied with some kind of meditative state for her training.

Karin whined, throwing her pillow at the older redhead who unconsciously caught the soft object and flung it back into her small face.

"Umph!" She frowned at the force her sister had thrown it, but knew that it was her fault for trying to throw something at her anyway.

"You're so mean, nee-chan! How could you forget that it's my birthday?!" The smaller redhead yelled in frustration. It had been two months since her birthday, and she got no presents from her big sister.

She was about to rant some more when three bottles were tossed her way. Instinctively, she caught them; examining them in confusion.

When she realised they were three rare perfumes only found in certain places, she squealed in joy.

"I knew you'd nag if I didn't get you anything, and since I'm two months late; I got another two for you." Shiru informed her little sister, still having her eyes shut as she let the modifications Orochimaru made to her body heal whilst she attempted to meditate.

"Don't hug me." She immediately warned the perfume-obsessed girl who was only inches from glomping the still-healing one.

Karin pouted, but backed off nonetheless. "What did Orochimaru-sama do this time?"

Shiru sighed, knowing that she wouldn't be able to meditate with Karin being nosy and opened her eyes. She still had no idea what she looked like, but cared little about her physical appearance either way; so she hadn't bothered to look for a mirror in the time she'd been here. Her little sister's reactions every time she looked at her gave an indication that she had eyes that the younger girl liked. Perhaps it was the eyelashes.

"Made enhancements to my speed, durability and strength. Within a day or two, I should be fully healed and will be then working on taijutsu training and tracking. Orochimaru wants you to teach me the 'Mind's eye of the Kagura'." A bandaged hand reached up to scratch lightly at her unkempt hair. At the movement, Karin automatically grabbed her sister's brush and ordered the older girl to sit on the floor so she could brush her hair.

"I'm not sure if I can," Karin stated unsurely, grabbing the long red mane of her sister and gently brushing the knots out, "I've always thought it was limited to me, only." She admitted.

Shiru nodded slightly so Karin wouldn't unintentionally pull her hair. "I thought that was the case as well, but he thinks otherwise. If you don't, he'll probably do some kind of experiment so I can do something similar."

The smaller girl frowned in worry. She didn't mind the experiments done on her, but Shiru was being pushed to the edge and she didn't like it. Orochimaru had left the seal on her stomach alone for now, but who knows when he might want to get rid of it. "I guess I can try, but don't expect anything."

"I was skeptical that you could even teach me in the first place, Karin." Shiru sighed, resting her head against the edge of her bed. "I don't mind if you can't. I can take the experiments."

"He's been conducting too many on you," Karin frowned, pushing up her glasses. "and he's been beating you senseless to learn all these jutsus and techniques. You need a break."

"I'm taking a break now." She replied softly, closing her eyes. "I also need to be able to handle all the things he's throwing at me. It was something I was ready to endure from the beginning."

The smaller Uzumaki remained silent after that, knowing that her sister had fallen asleep as she brushed her hair.

'At least I know she's improving...' Karin thought solemnly. She could feel the unnaturally large chakra reserve Shiru possessed. That was partly because of her heritage as a Uzumaki, as well as the rapid growth she experienced when she woke up, but the rest was mostly because of Orochimaru. It was actually unhealthy to have that much in such a small body, and she knew it kept the older Uzumaki up a lot.

The bespectacled girl respected Orochimaru, quite a lot. But she cared more about Shiru than him, if it came down to her choosing.

In less than a year, Shiru is already a capable kunoichi. Of course, that wouldn't have been possible without the sannin. Karin wasn't useless either, she was learning taijutsu so that she could pummel the prisoners she felt were trying to escape. Sometimes Shiru would do that bit for her if she was around.

To be honest, even with the experiments and painful training; she would have to say that this life was a lot better than her previous one. She didn't feel so useless, and was accepted to a certain to degree.

Karin hogged as much time as she could with Shiru within the next few days, but it was inevitable that she and Orochimaru were to leave again.

"I love you, nee-chan!" The small redhead waved as her sister and her master walked away from the hideout.

Shiru gave a half-hearted wave, not bothering to turn around before the two flickered out of her view.

Karin puffed her cheeks. "So mean, nee-chan."

"Shiru-chan..."

Upon hearing her name, Shiru pulled out the blade embedded in the unknown ninja's torso with ease and looked to her master with a particularly bored look. Her eyes ached because of the chronic insomnia she'd been suffering for the past few years. How long had it been since she slept?

Her master chuckled at her apparent apathy. "Do you know of the Uchiha clan?" He asked in a purr, flicking his inhuman tongue.

Shiru raised a single eyebrow. "Am I going to be spying on one?" She inquired as she cleaned her blade free from the excess blood. Neither of the two seemed to mind the amount of corpses scattered along the forest floor.

Orochimaru was sitting on a branch when he watched his apprentice test the recent subjects' abilities. Unfortunately, none of them were satisfactory and he had given the order for her to kill them; to which she obeyed silently.

Five years of being her master was certainly interesting indeed. She complied with his methods and his modifications on her; was a fast learner and held no sentiment towards the people she murdered. But the forced insomnia dulled her senses. She often got lost in her thoughts when he wasn't looking. He'd made sure that the time she didn't sleep was the time she'd train more.

A smirk threatened to form on his lips as he commended her intelligence. "Well done, Shiru-chan. You will be spying on a certain Uchiha in Konohagakure."

The fourteen-year-old sighed as she did the handsigns to let the earth absorb the corpses she had left along the floor. "What exactly will I be doing?" She questioned the sannin, her mysterious emerald eyes glazed with fatigue.

Orochimaru chuckled. "Kabuto will be able to help you get a spot on the Uchiha's genin team. They graduate in three months, and I want you to be on his team to influence his desire for power."

'How, I wonder.' Shiru drawled in her mind. Orochimaru didn't fail to notice the way she rolled her eyes.

"Do you remember your back story?"

"My name is Uzumaki Shiru, one of the descendents of the Uzumaki clan. I was on a mission for the Kusagakure, but my team members were traitors; effectively beating me and leaving me for dead. You're sure the third Hokage would be sentimental enough to let an unknown kunoichi in just because I'm an Uzumaki?" Shiru asked skeptically, her fingers twirling the hilt of her blade idly.

An uncharacteristic sneer from Orochimaru made her blink in mild surprise. "I'm almost certain the old fool would let you in just because of his sentiments."

"How...blind." She muttered, eyebrows furrowing in thought.

The Sannin smirked at his apprentice, approving of her belief of the old man's stupid sentimentality. It would get him killed one day.

"Indeed...now go prepare. I'll debrief you in the morning."

Shiru clicked her tongue before flickering out of her master's sight and went to the nearest base to prepare.

'I know that I'm going to get beaten like a rag doll tomorrow...'

Either way, orders were orders. It wouldn't hurt to see the main characters face to face, but what would happen to Sakura if she was to become the third member of team seven? It didn't bother her much, though.

She would have to use the academic scores Sakura had gotten to get a legitimate chance to placing into their team, even if Kabuto was going to help her somehow.

"Shiru-chan."

Emerald eyes darted to the owner of the familiar voice who called her name. She landed in front of him with silent footing. 'Speak of the devil...'

"Kabuto." She acknowledged him, not bothering to care about the way his eye twitched at her lack of manners. She hadn't used suffixes since she got here, she wasn't about to start now.

"How are you? Excited for tomorrow?" He asked, replacing his slight annoyance with a rather convincing smile she still knew was fake to a certain degree.

The redhead shrugged, simply wanting to lay down for a few hours instead of talk to the medic nin. Even if she couldn't sleep, that didn't mean she couldn't lay down and just chill.

This was one of the few things she'd been pissed at Orochimaru for. Taking away her ability to sleep was just mean, but she supposed there was logic to it. His modifications to her allowed for her body to do all the repairing whilst she was awake instead of when she'd be asleep; so she could stay awake all she liked without her body deteriorating on her. She wasn't sure about her mind though. At least there weren't any hallucinations.

It messed up her mind sometimes, and the bastard dared to use one of her fears against her when she expressed her dislike of the situation.

"Did you say something?" Shiru asked absentmindedly, breaking out of her train of thought and looking to the white-haired male before her.

Undeterred, he repeated his questions. "How are you and are you excited for tomorrow?"

"Ah. I feel like shit, as per usual, but I must admit that I'm excited for tomorrow." She responded bluntly, as she normally did. The residents of Otogakure got used to it after a while. Not many of them had great social skills in the first place.

Kabuto simply chuckled. "I see, well then. I'll let you continue about your business."

Her ear twitched as she heard the sound of the gravel underneath his foot crunch, walking ahead when he moved out of the way for her.

When Kabuto knew the redhead was out of range, Orochimaru appeared beside him. The medic nin bowed lightly in respect.

"Orochimaru-sama," He greeted the sannin, "how were the subjects?"

"Poor," was his master's dull reply, "I had Shiru-chan kill them all."

Kabuto smiled politely as he pushed up his glasses. "I'm surprised you took her on as an apprentice all those years ago, but she's turned out to be a rather nice asset to our forces."

"Yes, even if she has the utterly ridiculous fear of garlic; she's a worthy kunoichi. I trust that she'll be able to influence little Sasuke to join us." Orochimaru smirked, his tongue habitually flicking out again.

"Well, then. I shall prepare for the mission." And with that, Kabuto was gone.

The snake sannin looked to the sky, thoughts running through his head rapidly. 'It would be interesting to see how my little apprentice handles being in a social situation for an extended amount of time.'

He knew of her other fears of getting attached, it was blatantly obvious when she would distance herself from her supposed sister; but would still bring the girl rare perfumes for her collection.

It was rather amusing, but he approved of her fear. He didn't need her becoming attached to any of the Konoha people and betraying him. It would be an unfortunate waste.

The girl neither feared him or despised him, making it much easier to work with her during certain modifications and experiments. She hadn't shown any signs of traumatic behaviour, not yet anyways.

He'd have to check on her before she left for Konoha.

But he had other business to attend to first.

And that was the first chapter. Hopefully not too bad. I tried to keep everyone in character, but Karin is a bundle of weirdness; so I improvised her childhood self. Feedback would be lovely.