Disclaimer: I do not own Naruto or Kingdom Hearts or this story. This Fanfic is for entertainment purposes only. Happy reading, please review. This story belongs to uzunaru999

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Chapter 1 The Dark Key

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Location: Konoha

Date: October 10 XXXX

Today is a very depressing day for Konoha, for it is the same day that the Kyuubi attacked seven years ago. That day many friends and family died, all because of rampaging demon lord. That day is also the birthday of one Uzumaki Naruto. While most kids have presents and cake with family, it was very different for Naruto. On his birthday he was given pain beyond imagining. He was chased through the streets, cornered in alley ways and then tortured by the villagers. Why was he beaten you ask?

The reason he was beaten was because he was the container of the Kyuubi that attacked seven years most thought he didn't know they were wrong. Naruto knew about the Kyuubi, who was a she, and about his parents. He broke into the Hokage's office and read his file, ever since then he never looked the old man in the eye. But I digress, I was talking about Naruto's birthday and how he was treated. Naruto had been pissed off that day because someone had raided his apartment…AGAIN!

So against his better judgment he decided to go for a walk and let out some steam in the forest. On his way though he was seen by some drunks, Naruto cursed as he started to run. But once again they cornered him in an ally. He tried to back out but it was too late, the drunks had somehow gathered others civilians and shinobi join in the 'Fox hunt'.

"We got you now Demon Brat!", "Yeah we're going to finish what the fourth started!" With a cheers of anger the beating began, 'Why does this always happen-' Naruto's thought was stopped as a wooden bat smashed into his face. As he fell into the mud out of his eye he saw someone. It was an ANBU, the guy was just standing there, WATCHING! Naruto mentally cursed the man and printed his mask to memory. It was a regular dog ANBU mask, Naruto wouldn't have told the difference between others if it wasn't for the silver hair that stood out. Naruto started to get up, only for a shinobi to kick him on to his back.

They tied him down and dislocated his limbs so he couldn't move and started to stab him. Most of it was with kunai or broken glass bottles. It continued for about an hour then one of the villagers spoke, "Lets Brand the demon and show him who's in charge!", Naruto paled, 'They wouldn't go that far…would they?' In Naruto's mind Kyuubi was scared for her container, the bad part about being sealed in Naruto is the part where she can't do anything to help. All she could do is watch as her kit is tortured in ways that would make veteran shinobi puke. She banged against her cage in anger.

"Let me out! I've got to help my Kit!l Damn you Yondaime! Damn you and your village!" The Kyuubi loved Naruto as a mother, for when Naruto was in his mother's own womb she feed him her youki so that he would have a better chakra and healing in the future. Little did she know that she would be sealed in the very Kit she helped her previous container give birth to. And so she cried for the wrongs that were committed against her kit, she cried as how she knew that Kushina would be rolling in her grave at the moment. But mostly she cried because no matter how much pain Naruto was in he never let the seal share the pain with her. So all she could do was watch in the horrors of the 'village'.

Outside the seal Naruto was shivering as the hot iron prong got closer and closer. The only thing the villagers did was laugh.

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Naruto screamed in pain and passed out.

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Vivid dream

Naruto fell through the darkness, it felt like he was being pulled through a small pipe, or deep under water. It was hard for him to explain the feeling, he soon started to flip and then slowly land on a dark platform. Suddenly the platform broke away into a hundred crows revealing the circular disc platform. Below Naruto could see stain glass depictions of weird creatures. Most of the creatures where black and looked like they belonged in the shadows and the others were white and deformed like if they weren't supposed to exist. In the center of the platform were two symbols, a black with red outline heart with a three prongs out of the bottom. In the middle of the heart were lines with 'thorns?' on them and the other was a white heart that looked incomplete.

Naruto stared in confusion, "This is the weirdest dream I've ever had."

'I bet it is.' Naruto tensed in response to the voice. 'Don't be scared, I'm here to help you on your journey. A journey that will shake the very foundations of the world on which you live.'

"Well if you could please direct me to the nearest exit I'll be very happy." The mysterious voice chuckled, 'Well according to the script I can't let you go yet'

"Script?", 'Never you mind, anyways I don't think you want to go without the gifts your about to receive. Gifts that will help you get stronger and protect the few that care for you and future friends."

Naruto froze and with a hint of curiosity asked, "I'm listening."

'Well let's begin, answer me this, what is a heart?', Naruto tilted his head in confusion, "a heart?" 'Yes, what do you think a heart is, and not the organ that is inside your body.'

Naruto thought a bit, "A heart is the center of your emotions: love, hate, fear, anger, and happiness. It is one the three things that make up a human being."

'Very good young Naruto, a very good observation. Now let me show you a heart.' Out of the darkness came a crimson heart, it floated a few meters in front of the boy. It glowed with a deep red color, and small sparks of yellow fell from it every moment or so.

'This Naruto is a representation of a heart, only you and a few people are able to see them. They float about the world looking for a place to rest. What your people call ghost are really restless hearts looking for their resting place. Some hearts just don't want to rest, some even look for ways to gain existence again. A unique way for heart to gain existence again is to become a Heartless.'

"What's a Heartless? asked Naruto. The boy then watched as the heart in front of him was covered in black and purple energies. The heart then turned into an orb of black and then took form of a small creature. The creature was small about the height of a large dog. It had a small body with two feet. It had three claws on its two arms and two antenna on its head. It had no mouth or nose just two large bright yellow eyes. Naruto had to admit the thing looked kind of weak, but he learned never to underestimate your opponents.

'This Naruto is a very low level heartless known as a shadow. There are many kinds of heartless; it all starts with your imagination. But these are the some of the few heartless that you will be able to control.'

"Wait control? You mean I'll be able to collect hearts, turn them into these 'Heartless' and control them?" asked a very intrigued Naruto.

'That's pretty much it all in a nut shell; know though that some people view these heartless as beings of evil. What they don't know is that it's a process that helps restless hearts go to purgatory to be judged and then sent to heaven or hell. A person lives then dies, then depending on their life go to heaven or hell. But few hearts can't be judged so easily so they rest in purgatory until it's their time to be judged. Those that don't want to wait doing nothing have an option of becoming heartless. They then are like your shinobi summons, they help the main heartless master. Right now there is no Heartless master, there for the higher ups have decided that you become the new one. With this power over the heartless you will be able to protect those you love and destroy those you dare cross your path. Are there any questions?"

"Yeah I have just one; I thought that the human is made of three things: Heart, Body and Soul. When a person dies where does the body and soul go if the Heart becomes a heartless?"

The voice laughed, ' Very good question young Naruto, The hearts become Heartless, the Souls becomes what are called Nobodies, and the body returns the earth from which it come.'

aruto raised an eyebrow, "What are Nobodies?" another creature appeared in a black and thorny portal a white thin, sinuous body that is capable of dumbfounding feats of flexibility. It has a large, cylindrical head with a flat top. Its body seems to be covered in a light grey jumpsuit, and its "mouth" is actually a zipper that undoes itself to reveal its actual, grey, sharp-toothed mouth underneath. It appears to be fairly muscular, though its arms and legs are very thin. The sides of its body are lined by a black line. Its feet and hands are pointed and lack digits, and its hands each sport two black bands around them. If Naruto could see the face of the voice he would have seen it smirk, 'Naruto the Nobodies are the body and soul of a person that his heart was consumed by darkness if it had a strong heart, but before you go I'll give you two more gifts. First I'll give you the power to control the Nobodies as well. Second a weapon to be precise, a weapon that will allow you to unlock the hearts of your defeated enemies and turn them into your heartless. Warning though you can only use its power on defeated enemies. Now turn around.'

The shadow and dusk that had appeared before disappeared into the black nothingness that surrounded Naruto. Shrugging his shoulders Naruto turned around and saw his new weapon. It had a circular guard that went around the handle. The weapon more of a club than a sword, but it did have a spear like tip with a hook at the end. (Dark Riku's Keyblade from KH1)

The voice wounded again. 'This Naruto is a Keyblade, these weapons are very rare. They have many powerful properties. This Keyblade is one that unlocks hearts, but only weakened ones. It can be used as a normal weapon, but its energy is poisonous, so if it draws blood its energy will seep in and poison the enemy. So don't use it for a casual spar, another special feature is that it can unlock anything. Even that little seal on your stomach.'

Naruto eyes widened, though he couldn't contact Kyuubi he knew that she would be very happy, but then he stopped. "If I do unlock the seal won't Kyuubi and I die?"

'No you won't, you'll just get a few of Kyuubi's tails and powers. She will have to be in a different form for a long time as most of her youki will be used to make a new body. So when you free her she will be force to be in a small fox form for a few years to regain her full power. Sorry but that how it will go.'

Naruto nodded and then reached out and grasped the handle of the Keyblade. Just as he took it black and purple tendrils spread and changed his cloths, once over only one thing could be said after what Naruto had gained.