fA/N – This is the fic I mentioned in the latest PHD chapter. As stated in the summary, this is a Naruto/Kingdom Hearts crossover, but only using the plot from the game, there won't be any Disney character or worlds appearing in this story, they have been replaced by something that I find more interesting. There will be two KH characters taking part in the story, one will appear soon enough, but don't expect Sora or Riku to show up, might be some allusions to them later on though. The story takes place about a two or three months after the Sasuke vs. Itachi fight, skipping the fight against the Eight Tailed jinchuuriki, we all know what's the most likely outcome of that battle, and Naruto never went to train with Pa in the Toad World. Without anything else to add at the moment, I leave you with my newest project:

Keys of Light and Darkness


As The Door Opened

His foot steps resonated through the empty hall as he walked through the dark passageways. He had been a member of Akatsuki for more than five years now, but their base still put him on edge. "What was the Mizukage thinking when he built this thing here…?" Kisame asked himself as he finally reached the stairs and begun walking down the steps.

It wasn't long before the former Kiri nin started to feel the effects. He hated going down to that place, for some reason it made him feel weak, and that was something that the blue skinned man did not enjoy.

Taking the last step, his feet touched the cave ground where the tiled floor ended. By now, even Samehada felt heavy and his feet staggered slightly as he walked further into the cavern. "Though you've be here…" Kisame commented, finally reaching the cave's main room.

Standing in the middle of the room, Madara turned his head to look at his subordinate. "How's "Hawk" doing…?" The masked Uchiha simply ask before he sight set back on its previous focus.

Kisame followed his boss' gaze. At the very end of the cave stood the statue that held the eight bijuu they have captured. "They're still a little sore from the fight against the Orochi." The nuke nin informed. "And Suigetsu is still bitching about the fact that Zabuza's sword was scraped a little during the fight." The man added, not bothering to hide the amusement in his voice.

"Shouldn't you already accept the fact that Kubikiri Houcho belongs to the boy now." A voice came from one of the corners of the room.

Looking at his side, Kisame could see Zetsu's figure emerging from the wall. "I told you not to do that, it creeps me out…" The blue skinned man commented.

The Grass nin merely ignored his comrade as he move to address his superior. "Got a message from Konan and the Boy Band…" Zetsu started. "There's a girl in it now." His "other" voice corrected. "Whatever, they said that they haven't been able to make any moves." The man continued; his annoyance at the situation was evident. "Apparently, Jiraiya has put the whole Leaf village in a state of alert."

Madara shook his had slightly as he let out a soft chuckle. "Jiraiya… even from beyond the grave you are still causing problems for us…" The masked Uchiha remained silent after that. Regarding the giant statue in front of him as if it were some sort of puzzle to be solved, the Sharingan users advance a few steps towards the stone effigy and brought his right hand forward as though he was trying to feel something that the other two Akatsuki members present could not see. "Maybe we don't need the Kyuubi anymore…" The man commented.

The Mist shinobi gave his superior a confused look. "Didn't you say that the Kyuubi was essential to open that thing?" The Shark like man asked.

"No, I said that we needed to gather enough power for this thing to work." Madara started explaining. "And that Kyuubi was the most powerful bijuu." The man continued as he took a couple more steps forward. "But lately… I've felt a high increase in the Worlds' darkness. Each day more and more hearts are given themselves up to the darkness, the power of that place is growing stronger; I can almost feel it." The mask hid the Uchiha's smile as he turned around to look at his subordinates. "They are getting impatient…"

The tone in Madara's voice put both Akatsuki members slightly on edge. "So, the fox is not needed anymore?" Zetsu asked, being the first one to get a hold of himself. "Do we have enough power with only eight bijuu?"

Madara gave a small nod. "I believe so." The Sharingan user answered. "While they have been reduced into those beastly forms, the strength of the bijuus' hearts is terrifyingly powerful. Eight should be able to open it in its current state." The masked man explained before going silent once again.

"Should?" Kisame asked as he crossed his arms. "So you're saying that there's room for error…"

"There has always been room for error." Madara voice came out almost playful, for a second Kisame thought that he was talking to Tobi again. "We're talking about human hearts here. They are extremely unstable and unpredictable; they should never be taken for granted." The man explained.

A sighed escaped the blue skinned man. "That doesn't make me feel any better…" The missing nin commented.

The Sharingan user looked back and gave his subordinate a smirk through his mask. "It wasn't meant to." The black haired man said. "When dealing with the power of darkness that lies in people's hearts you should always be cautious, one small slip and you'll lose yourself."

"What about the young ones?" Zetsu asked. "Should I wake them up and bring them down here…?" The plant like man said as he prepared to merge with the wall again.

Madara shook his head. "No, they're not ready at the moment." The masked Uchiha stated. "Juugo's heart, while strong, tends to waver constantly, Suigetsu still has some maturing to do, Karin…well we know where her heart truly lies at the moment, and Sasuke." Akatsuki's true leader paused for a second. "He may still have some issues to resolve, so let Hawk rest for a little while more, things are going to get interesting thing around here, and they are going to need all the rest they can get." The black haired man said as a black aura appeared around his body. "Us three will have to make due for now."

Kisame scoffed. "Why do I fell like we're opening Pandora's Box…?" The blue skinned man wondered out loud as he and his comrade move forward to stand beside their superior.

Another smirk formed behind the Uchiha's mask as auras, similar to his own, appeared around the two men at his side. "That because, in a way, we are…" The man's smirk widened. "…Just don't expect to find Hope at the end of it…"

The three men brought one of their arms forward.

Slowly, eight of the statue's eyes begun to open. The dark auras around the three mean started to flare up as the whole room shook and cracks appeared on the giant effigy.


His sighs were the only sounds heard through is apartment in the last few hours, if would have been days if he hadn't hit his toe with one of the desk's legs, which caused him to through the list of all the swear words he knew, afterwards he was even more depressed because more than half of the words in that list had been taught to him by his pervert, and now gone, sensei.

Naruto removed the arm that had been shielding his eyes for the past couple hours. Lifting his head slightly, the boy saw how much light was coming through his window and deduced that it probably was around one o'clock in the afternoon, either that or around seven, he was never good guessing the time.

Stretching, the blond got off his bed and started toward his kitchen. As the boy moved through his house, he couldn't help but be impressed at how silent he was, after all, it was his sensei the one who had told him that even if he were to walk through a field of pillows, the blond would still cause enough noise to alert everyone in Kumo.

As the blond teenager opened his kitchen cabinet and reached for one of the cups of instant ramen he kept here, the boy found himself in the bizarre situation and an unfamiliar feeling cruised through his body. He didn't feel like eating ramen.

Shaking his head, Naruto fight off the idea of going to the hospital and instead returned to his room. Once he reached his bed, the boy simply let his body fall into the mattress.

He immediately knew that something was not right as the boy felt his body continued to fall instead of finally hitting the mattress. Naruto felt as though he was sinking through water, slowly drifting towards a bottom that he wasn't sure would come. Opening his eyes, the feeling was instantly gone and the blond found himself standing on a familiar, water filled corridor.

During the years that Naruto spent training, Jiraiya taught him how to enter his mindscape voluntary, the blond guessed that maybe the old pervert somehow hope that he and the tailed beast inside his body would come to terms if they interact with each other. Of course the plan failed thoroughly and all of their meetings ended up with an insult and put down competitions between the boy and the fox, which shamefully ended with the bijuu coming out victorious. Needless to say, Naruto did not like coming to this hallway.

What caught the teenager's attention was the fact that he hadn't come here on his own consciousness, nor was he in battle or any time of dangerous situation, that he knew of, which was the only reason that he would be transported here, so why had the fox brought him to the place?

Walking towards the bijuu's cage, the jinchuuriki felt something out of place. Whether every time he walked through these halls he could feel the fox's pride and arrogance, they were so strong that they almost felt palpable, but now, those sentiments had been replaced by something else. Two things that Naruto would have never associate with the Kyuubi no Kitsune, fear and anxiety clouded the surroundings of the tailed beast's cage, and every time the blond took a step, they became stronger.

"Kit…" Kyuubi's voice came up low and meek, completely deprived of the pride and power that normally accompanied it. "Is that you…?" Naruto could see movement through the bars before the fox's eyes suddenly open and set on him.

Naruto shook off the fear that the bijuu's gaze sent through his body. "What's going on?" His voice actually carried genuine concern, something that surprised the boy. "What's wrong?"

More movement from beyond the bars as Naruto could see the other gigantic eye appear into view, signifying that the fox was now fully facing him. "I can feel it…" The bijuu begun. "Something is coming…"

The blond tilted his head slightly as he gave the all powerful Kyuubi a confused look. "Care to elaborate?"

A grunt escaped the fox at the boy's insolence; then again that was nothing new. "How the hell should I know?!" The bijuu exclaimed. "I've been trap in your poor excuse of a body for the last fifteen years! I have no idea what's going on out there." Kyuubi ranted, his booming voice returning with full strength. "I just know that it's something powerful… and becoming more so with each passing moment…" His tone was already losing its might once again.

Naruto spared the fox another confused look. The boy was a little skeptical, after all, the fox said so himself, he had been sealed in his body all this time, so how would he be able to sense, in his words, "something powerful"? The whole thing was a little hard to believe. Maybe the solitude was starting to affect the tailed beast, perhaps he should go look for a nice female spirit and cram her into his already dysfunctional mind. He sighed, every time he came to this place his self esteem ended up through the ground.

"You don't believe me, do you?" In times like these, Naruto was pretty sure that his theory about the fox been able to read his thoughts due to all the time he had spent in his mind was true. Kyuubi sighed in frustration. "Listen you ungrateful little brat. If I, Kyuubi no Kitsune, warns you about something he deems dangerous, you said "Thank you" and then ask which way it is so you can run in the other direction, because I won't put my existence in jeopardy just because I'm stuck sealed in your body!" The bijuu ranted as his eyes glared at the blond.

"It just seems too farfetched." Naruto said as he returned the glare, he took pride in the fact that he was slowly becoming braver when it came to dealing with the angry bijuu. "I mean, I haven't felt anything, and if it's as big as you making it sound, then someone in the village would have set off an alarm or something."

Kyuubi snorted at the jinchuuriki's words. "You humans are so overconfident." The fox commented. "In reality, you know nothing. There are things in this world that are way beyond your perception." The tailed beast's eyes narrowed, focusing solely on his vessel. "Things that you wouldn't be able to comprehend… or even believe… and those are the thing that you should really be cautions of…" His voice had become dark and ominous.

The blond merely looked back at the fox's eyes and, before he was able to catch himself, his shoulder gave a small shrug.

Naruto tried to pass the shrug as a twitch, but the roar of anger that came from the other side of the cage let him know that the bijuu hadn't bough it. "Listen to me kit!" Kyuubi snarled. "Heed my words seriously, something is going on, and we all might soon be in danger." The blond could feel as though the fox's gaze was burning straight into his soul. "What I find dangerous, it's deadly for you…"


Kisame's body joined Zetsu's on the floor. The two Akatsuki members had never been more exhausted in their shinobi lives. "Just rest now, I can take over from here." Madara commented without diverting his eyes from the shattering statue.

The former Kiri shinobi looked up at his former Mizukage. The masked man still stood strong in the middle of the room as the whole place quaked furiously, the aura around the Uchiha had become so strong that, despite its lack of light, it shined throughout the cavern.

After maintaining, what Madara called, the power of their hearts flaring up for minutes that decided to disguise themselves as hours, both him and his plant like comrade had reached their limit and fallen unceremoniously to the floor. "Don't worry about." Even though the Akatsuki leader was trying to sound sympathetic, he was unable to completely hide the mocking tone of his voice. "It takes a while to get used to it." He simply stated as the turned his head slightly and gave a quick look to his fallen subordinates.

The only thing that kept Kisame from running back upstairs was his pride. What appeared to be small burst of dark energy were seeping out of the cracks on the giant statue and filling the room, making it hard for him to even try to breath while he felt that his body was about to be crush by the mere air around it and, looking at the struggling Zetsu to his side, his comrade was dealing with the same predicaments.

Parts of the statue started to fall off as the tremors increased dramatically. "It's almost open, I suggest you guys step back…" The Sharingan user warned in a playful tone.

Forcing their bodies to move, the two Akatsuki members managed to crawl all the way to the wall behind them, as far from the statue, and any possible blasting zones, as they possibly could.

A light chuckle escaped the masked Uchiha, soon turning into an all out laugh. "HAHAHAH… I can feel it, the power of the Realm of Darkness infiltrating into this world, the power created by the hearts of humans, the power of Darkness!" Madara exclaimed before continuing to laugh.

Kisame could see statue's ninth eye, where all the cracks where moving towards, started to open as more and more of the dark energy burst through the stone effigy.

"The boundaries between Light and Darkness are breaking." The masked Akatsuki informed; his voice was full of glee as his single visible eye started at the statue's ninth. "I can feel them; they are craving for the hearts of humans…" He commented as his voice when from gleeful to ominous.

The two missing nins forced themselves not to scream as numerous pairs of yellow appeared through the fissures in the statues along with several long black arms trying to reach out from the cracks.

When the two shinobi reached the wall, they suddenly heard footsteps among the room's trembles. Wondering for a second about whom in their right mind would come down the stairs during an earthquake, Kisame looked to his left where the door to the room laid to find a shadow against the wall approaching.

"What's going on…?" Sasuke's voice came out strained as the Uchiha reached the cavern.

It was evident that the conditions of the room, along with the states of his injuries, had taken a toll on the raven haired boy as he was using one of his arms for support against the wall, while the other clenched the bandages that cover the injuries in his chest, and, by the red stains in his cloths, it was also save to assume that several of his wounds had reopened.

The boy's eyes narrowed at the sight that greeted him in the room. "What's going on…?" The young Sharingan user repeated himself, his gaze setting on the shattering statue at the end of the cavern.

Madara merely chuckled at his "relative's" demands. "Just sit back and wait for a bit, Sasuke-kun." His playful tone had comeback yet again. "We're almost done here… We're almost done with this world…" Kisame had to hand it to his leader; his ability to go from little kid to malevolent maniac in less than two seconds was impressive.

A vertical fracture appeared through the middle the statue as the ninth eye opened completely giving out an eerie purple glow. Acting out of instinct, Sasuke brought his Kusanagi forward to shield himself as the purple glow suddenly became an all out burst of dark light.

The statue exploded with a thunderous roar, shrouding the Akatsuki members in darkness.


Naruto's was taken back when the tailed beast started to scream in agony and trash around. "What's happening?!" Naruto asked concerned.

Kyuubi groaned as he tried to control himself. "It's coming…" The fox managed to let out. "They… They are coming…"

"They?!" Naruto exclaimed, now he really believed what the bijuu was warning him about. "What are you talking about?!"

The fox's eyes set on his blond vessel. "I don't know; I just feel that there is more than one…" The tailed beast struggled to let out. "There are many of them. Dark souls, seeking to take away people's lights…" The fox pressed his head against the bars. "Kit… I'm scared…" The prideful demonic eyes had become small and weak, almost pleading.

The blond realized that his body was trembling. Even though he couldn't feel what was coming, Kyuubi's current state had left him with no doubts that something terrible was about to happen and that he, no… that they, were in grave danger.

Suddenly, the tailed beast's eyes widened and he let roar of pain. "They're near!" The fox screamed in anguish as he started to thrash the cage again. Fighting once more to control his body, the bijuu looked straight into his jinchuuriki's eyes. Kyuubi forced the two words out. "Kit… Run…"

Naruto felt as though is body was pushed back by an invisible force. Opening his eyes, the Naruto found himself back in his room, lying face down on his mattress.

The boy pushed his body up and looked around, he half expected some sort of assassin unexpectedly appear and attack him. Sitting up in his bed, the boy let a sigh escape as he tried to ease his rapid heart.

With the fox's words still ringing in his head, the jinchuuriki got off his bed and walked towards the window to make sure everything was alright.

As Naruto neared the glass, the boy stretched his hand to pull the curtain away. The moment the blonde's finger touch the cloth's fabric, he felt as though something in his chest suddenly exploded.


Sasuke struggled to regain his sight. Once his eyes started to perceive things once more, the first thing that the young Sharingan user noticed was the giant, dark vortex that stood where the weird statue once lay. Madara stood proudly in the middle of the room, his eyes set on the dark anomaly, admiring in as an artist does his masterpiece. Brining his hand to rub his eyes, the raven haired boy felt something strange in his grasp.

"I should have known that you would get the first one…" He heard Madara's playful voice, causing him to look up to find the masked man looking back at him.

The younger Uchiha gazed down at his right hand and was unable to retain at gasp. His Grass Cutter had been replaced by some sort of giant key; it had a silver handle while its blade was golden, a key chain extended from the opposite end of the handle with the same color as the blade. Looking around the room confused, the boy saw several others identical keys impaled in the ground between him and Madara, eight other keys to be exact.

"Beautiful aren't they…?" Madara's question snapped the raven haired boy out of his trance. Gazing up, he could see the older Uchiha admiring the impaled keys. "They are called Darkside…" He informed as he brought his hand forward. Suddenly, the keys started to shine and turned themselves into glowing orbs that shot towards the masked man's outstretched hand. "… And we need to find the owners of these ones." He added as the closed his fist and the glowing light disappeared.

The teenage boy gaze down at his own key, there was some sort of strange power coming from it that put his body on edge. The sound of grunts caused the Sharingan users to look at his side.

Kisame and Zetsu struggled to stand up, both needed the aid of the wall behind them to complete their task. "Zetsu…" Madara started as his eyes set on his plant like subordinate. "I need you to go to Pein and Konan and tell them to come back immediately, having Kyuubi inside him is going to turn Naruto into the prime target for those things, right now Konoha is probably the most dangerous place in this world." The older Uchiha took noticed of the younger's slight reaction at that piece of information. "And Kisame," His gaze shifted towards the blue skinned man. "Fetch the rest of Hawk and bring them down here." The man commanded.

The two men nodded at their orders before moving out. Zetsu disappeared through the wall while Kisame walked pass Sasuke towards the stairs.

The raven haired boy felt small and weak for having no idea of what was going on, what was the weird key that had replaced his sword, and more importantly what was the weird vortex of darkness behind the older Sharingan user. "What's that…?" Sasuke pointed at the vortex with the golden key as he voiced his confusion, he was surprised how meek his voice sounded.

"That?" Madara pointed at the anomaly behind him, Sasuke could bet that there was a smile behind that mask. "That's the entrance…to the Corridors of Darkness…"


A/N – Well, I hope this first chapter succeeded in its task to catch the reader's attention. A couple of thing I would like to mention. First, in the PHD chapter I named this fic as the "Ultimate Xover" though it might not seem much right now, it will live up to its name soon enough, I hope. Second, it is more than obvious by now that the Keyblades are going to play an important role on this story, I have changed the concept of the Keyblade a little to suit the plot of this fic better, expect to see many Keyblades but with different meaning and power than the one they had in the game. Lastly, the second chapter is already underway; I'll try to finish it as soon as possible. I hope you give this story a chance to develop, I have quite a few things plan for this fic, a couple of twists here and there, some dark and sad scenes, heartfelt moments, your usual comic relief to go along with the mix, as well as your fighting/actions scenes of an Adventure fic to keep things interesting. Thanks for reading.