This is a story that I just recently thought of. I've been playing Kingdom Hearts a lot this month while trying to get other stories written. I'm hoping that this one will not just keep you readers busy until I get the other stories ready, but to also to keep you satisfied and entertained.

Disclaimer: I don't own Naruto or Kingdom Hearts.

~oOo~

Chapter One:

The First Speck of Darkness

~oOo~

In the Land of Waves, a battle between Team 7 of Konoha and a rouge ninja named Zabuza Momochi and his partner Haku was taking place. Naruto Uzumaki and Sasuke Uchiha were trapped inside a dome made from Haku's Crystal Ice Mirrors and Kakashi Hatake was battling Zabuza while Sakura Haruno was protecting Tazuna; the bridge builder of the Land of Waves.

Sasuke and Naruto were battered and covered in cuts courtesy of Haku's senbon needles. There were even some needles stuck on their bodies. Naruto, from the overuse of Shadow Clones, was passed out on the ground. Sasuke was left standing against Haku who was ready to send another flurry of needles.

"I didn't want to kill you, but this fight has gone on long enough," Haku said.

"I need to think of something. We stand no chance against this guy," Sasuke thought.

~oOo~

Naruto opened his eyes to find that he wasn't at the bridge, but in pitch black darkness.

"Where I'm I?"

"Well, it's about time we met," said a voice out of nowhere. The voice startled Naruto.

"Who's there?"

A bald old man wearing a light black coat, white collared shirt on the inside, black pants, black boots, and white gloves and cuffs appeared. He had yellow eyes, a gray goatee and had his arms behind his back.

"I've been waiting to finally meet you, Naruto."

"W-who are you?" Naruto asked again.

"Well, to the people in your village, I'm known as the Kyuubi. My real name however is Xehanort. To answer your other question, we're in your mind."

"You're the Kyuubi? So, you're the reason everyone hates my guts," Naruto said sending Xehanort a glare.

"That is correct. I've seen everything that's happened to you over the years and I have come to make amends." Xehanort said with a solemn look.

"Really?"

Xehanort nodded his head. "There is so much darkness stored up in your heart because of the villagers in Konoha. One small push and it could easily consume you. They say that you should extinguish the darkness and embrace the light. That's not entirely true. You see, light and darkness are a balance; you can't have one without the other. One cannot have darkness alone; the same goes for the light. Both light and darkness are powerful energies that can't be entirely destroyed."

Naruto watched in awe as the old man continued.

"It's true that those who fallow the light become strong, but the darkness can make you much stronger. Naruto, I'm going to be your mentor from now on in helping you to control the darkness in your heart."

"What? What do you mean control the darkness?"Naruto asked.

"To control the darkness, you must embrace it. I'm going to give you a gift that will serve you well. Think of it as a type of summoning jutsu. You do know what summoning is right?"

Naruto nodded his head. "A little bit. I mean, we did learn about it back in the academy."

"Good, this a little similar only without hand signs. This is a very powerful thing, so be sure to start out small. How this works is that you have to think of a memory that is painful to you, and remember it has to be something small at the moment until you get the hang of it. When you have found a memory, channel the darkness in your heart like you would chakra and slam your palm on the ground. Creatures from the realm of darkness known as the Unversed, fledglings that feed on the negativity in people's hearts, will appear to assist you in battle."

"Really, that's so cool!" Naruto said jumping up and down.

Xehanort smiled. "Allow me to give a little boost in controlling the darkness in your heart."

Xehanort reach out toward Naruto and flexed his hand. Naruto suddenly felt pain in his chest and doubled over. Then he started to feel power rise up inside and a dark aura enveloped his body.

"There, you should be able to use the darkness with ease. Now you better wake up, your friend could use a little help."

Naruto stood up and flexed his hands still feeling the new power flowing within him.

"Thank you, Xehanort-sensei, I'll do my best!" he said before vanishing.

Xehanort smirked and chuckled. "Well, that was easier than I originally thought. This boy has so much darkness in his heart that it won't be such a chore to make him succumb to the darkness. Then I can finish what I started all those years ago and extinguish the powerful light source I sensed in that village."

~oOo~

Sasuke was thrown to the ground. He sat up panting. Naruto had been passed out for 15 minutes and Sasuke couldn't hold out much longer.

"Now to finish this," Haku said ready to toss more of his needles. But before he could, a dark aura irrupted from Naruto's body that rose to his feet with a sinister grin on his face.

(Insert KH: Birth by Sleep-Shrouding Dark Cloud)

"Have I been missing out on all the fun?" he asked.

~oOo~

Zabuza and Kakashi charged at each other ready to strike with their weapons. Then they froze when they felt the aura. They both turned in the direction of the ice dome. Even though the mist was dense, they knew where the dome was.

"You feel that Kakashi?" Zabuza asked with a hint of shock in his voice. "That power, it's so foul."

"Yes, I feel it too," Kakashi said with fear in his voice. He didn't like this kind of power. It was foul like the Kyuubi's if not greater.

~oOo~

Sakura and Tazuna felt the dark energy as well. It was so foul that Sakura was trembling. Where was this power coming from?

~oOo~

Naruto stood like a statue as the darkness poured out of his body. He turned toward Sasuke who was staring in shock.

"Come on, Sasuke. I thought you were stronger than that," Naruto said sarcastically.

"Naruto, what happened?" Sasuke asked slowly recovering from the shock.

"I don't really know Sasuke, but whatever happened, I feel great," Naruto said. He lied about the not knowing part. He didn't want him to know about his tenant and how he acquired this new power.

"Now Haku, prepare to face a power you're never seen before!" Naruto shouted.

He closed his eyes and concentrated. He looked through his memories to find a painful memory, but not too painful. He found a memory form his childhood about the clerks at the stores giving him stale produces and then making him pay three times the normal price, or they would just kick him out and sell him nothing at all.

Haku just stared at the boy. Was this really the same boy that he met back in the forest? He couldn't believe that this boy was giving off such a hideous aura.

Naruto's eyes shot open and the darkness became more intense as he slammed an open palm on the ground. Suddenly 12 bluish shadows slithered along the ground, and then emerged by zipping through the air and landed on the ground surrounding Naruto and Sasuke.

"Feast your eyes on the Unversed!" Naruto yelled.

~oOo~

End of Chapter One

~oOo~

I know this is a short chapter, but this is only a taste of what's to come. I'm also going to do an encyclopedia on the Unversed. And for those who haven't played Birth by Sleep yet, that's where the Unversed are from. And I know I didn't give a name for the Unversed for this chapter, but the encyclopedia will tell you which one it was.

The Unversed:

Flood: the most common form of the Unversed. Just because they like to dart around as they strike doesn't mean you should get antsy yourself. Careful, though: attacks won't hit if they have seeped into the ground.