Naruto uzumaki, age 13, academy student, the twin brother to one jin uzumaki, the container of the nine tailed demon fox, naruto uzumaki was looked down upon, scorned by people for his saviour of a brother, people belittled naruto, called him weak because of his lack of talent, they did not realise that naruto was easily one of the most talented people in the entire village besides the current hokage.
The Yondaime, naruto despised the man, he was the man that cursed him, he sealed the kyubbis mind into naruto and the chakra into Jin, in fact the only two people in his family he actually cared for were his sister sayo uzumaki and his mother Kushina uzumaki, they didn't show blatant favouritisms, and his sister even had a small crush on him (why, because this is my fic)
Naruto was currently in one of the small abandoned houses in the areas of Konoha polluted with the rampant chakra left behind after the kyubbis death. Anyone who entered died no warning, no discrimination, they just dropped dead, but they didn't have the thing controlling the chakra sealed away inside of them, the chakra obeyed him and followed him around like a lost puppy.
He was standing in a dimly lit room in front of a table, the table contained scrolls ranging from the schematics of the villages security areas to high level jutsu, next to the table was a barrel filled to the brim with roles of explosive notes all waiting to be ignited by a master seal on the underside, may more barrels were held in a storage room in the next room over, however they also contained pellets filled with a small charge of yoaki, if one of those got into your system then you would disintegrate from the inside out, nothing would save you.
Narutos eyes raked across the sealing array on the paper checking it over for any mistakes, if he even got one fraction of the stupidly complex equation wrong he was a dead man, with one least check over his calculations he placed the palm of his left hand in the middle of the array and focused chakra.
Pain, the most agonising pain he had ever felt erupted all the way up to his elbow, a grungy white substance flowed from his pores forming a carapace on his arm, red streaks wrapped around in a spiralling manner all the way down to the wrist where they condensed into a crimson band, his nails now bone white lengthened into six inch claws, the back of his hand writhed and opened revealing a blinking crimson eye, the palm split into a mouth filled with razor sharp teeth, the throat of the mouth glowed a sickly yellow.
Gasping he pulled his arm back, with his other hand he explored the bony covering, his trembling fingers wandered over the smooth coating in wander, he turned his hand over and locked his blue eyes with the single slitted crimson one on the back of his hand, the eye of the kyubbi no kitsune, he winked at the eye cheekily, it rolled itself in obvious annoyance at his actions.
He turned the hand back over and examined the mouth, pouring a small amount of chakra into his finger tip he began to feed the mouth like a baby, just like he had designed the mouth ate the chakra and stored it away in a secondary reserve in the coating on his arm, it would act as a completely separate system and allow him to perform an innumerable amount of jutsu with ease, he could even drain chakra from nature itself, every living thing became a means to gain more chakra, he could even absorb the bloodline of another person through the mouth.
Any doujustu he absorbed he would be able to place in the socket reserved for the kyubbis eye and use any techniques gained from that particular doujustu, this was one of the reasons he had chosen tonight to use the seal, tomorrow night he would join Itachi in slaughtering the uchiha clan, it was then that he would attain the sharingon.
He would then go with Itachi and join the akatsuki, family be dammed, no sense of honour would keep him bound to a village that didn't appreciate him, and even if he had to rip the dammed demon out of his cold dead brother he would escape this place.
With that thought in mind he wrapped the final bandage around his arm and slid his t-shirt back over covering it up completely, he rolled up the sealing array and destroyed it with a small flare of Katon chakra, he refused to allow anyone to gain what he had no one would have the power to absorb everything, to become a master of all forms of ninja technique.
He closed the door to his experiment room and sealed the door shut with an advanced seal that prevented anyone without uzumaki blood from entering, or even seeing the entrance, on the table he left stacked all of his research notes, all of the schematics, and all of his plans, in three weeks or in the event that his new arm was destroyed the seal would discharge a pulse that would call to any uzumaki within a hundred miles and linger for up to a week.
He had left a note for each member of his family explaining why he did what he was going to do.
He contacted the kyuubi and relayed the message to begin, with a small drop of his chakra the mouth in his palm opened up behind the bandages and began to pull in all of the excess yoaki, it flowed from the surrounding area and flooded his arm, the eye on the back glowed and hummed in contentment as though it had just finished a delicious meal, the no-go area was purged of yoaki, it would be the last good deed for this village he ever did.
XxXxXxX
Blood pooled in the streets it filled the gutters with a scabby layer, a small thump echoed in the streets, a body fell forward, the back of its head was split open as though bitten by some animal, the skull was hollow, the brains had been removed by narutos hand and all the useful information had been assimilated, the rest was discarded, memories and such destroyed, the chakra was drained and fed into narutos secondary system.
So far he had killed around forty clansmen and women, all in the same way; he had paralysed them with small strings of yoaki into the back of their necks and then attached his hand to back of their heads and drained them dry, he then just allowed the bodies to drop, they littered the streets around him, after the first kill he was almost sick.
He could still picture the glassy eyed stare of terror as he pressed his hand against the girls forehead, only fourteen, such a waste, it was the reason he attacked form behind and at the base of the skull, it stopped the brain instantly and he wasn't forced to witness the last four seconds of life from the victims point of view.
He strode down the street approaching itachi's house, he reasoned that Itachi would be finished by now; he slid the door open silently and entered the darkened house, pressing his ear to the door he listened to the conversation going on inside.
"..Hate me, use your hate to grow stronger, get strong enough to kill me. Tsukiyomi."
Naruto winced, the tsukiyomi was a truly foul technique, and to use it on his brother was just twisted, a dull thud signalled that Itachi was finished with his torture, seconds later the door slid open to reveal a blood soaked Itachi; his normal sharingon eye was replaced with a tri bladed shurikan one, he spared a single nod towards naruto who was leaning non-chantly against the wall cleaning his normal hands nails with his teeth.
They both exited the house and began walking towards the gates of the uchiha district, as soon as they cleared the gates naruto spun on his heel and unleashed a half of the pent up Katon chakra he had kept stored in his arm, it shot forward in an arc of superheated white flames, glass melted into puddles on the ground and the bodies were reduced to ash.
He was spun back around by a furious Itachi.
"Why did you do that, I cannot get new eyes when I go blind because of that."
Naruto smirked and opened his palm, a tongue lolled out holding dozens of sharingon eyes, itachi's own widened before settling back down in calm, he grunted in satisfaction of narutos foresight and leap into the trees followed closely by the demon armed uzumaki.
In another side of the village a petite red headed girl was sobbing as she read the note left on her bedside table by her brother.
"Dear imouto,
By the time you read this I will be gone, I will make this short and sweet, I am leaving the village, I am not appreciated here, I never will be, our pig of a brother receives more love and training and adoration than any of us will ever receive in his shadow, I will not lie, the way in which I am leaving will shock and most likely disgust you, you will understand when you read this, simply look towards the uchiha district.
I know how you feel about me, honestly I would have liked for something to have come of it, when the chunin exams are being held we will meet again, do not show this to anyone and destroy it when you are finished reading.
Know that I love you and mother; I just wish that we could have been a family.
Yours naruto uzumaki."
She finished re-reading the letter and once more her form was wracked with heaving sobs, they went unheard next to Jin's loudmouthed yells of how he wanted that white fire technique and her parent's frantic calling for him to come inside while they get to the bottom of the explosion.
XxXxXxX
On the subject of narutos arm.
It can absorb any kekki genkai that is found naturally in the body, minus the ones that affect the body in a way that would damage it, like the dead bone pulse, or that thing that sakon and ukon have.
It absorbs all of the person's chakra and stores them in different element deposits, he gains more from killing people and absorbing their chakra than by absorbing normal chakra from the air and ground and converting it into elemental chakra.
He also needs a copy of the elemental bloodline for them to work, so he would need to absorb a lava user before his body could mix the two chakras and become a lava user, when he runs out of a certain elemental type he can restock form a human or animal, or from the plants.