A/N – This is the longest chapter I've written so far, there were a lot of things about this story that needed to be explained, while other that needed to be revealed, in order for the plot to start, though there are some things that will be addressed to later on. Here is the reason why I named this fic as the Ultimate Xover.

A Strong Heart

A sight escaped the Jinchuuriki as he outstretched the arm that held the strange keys, not unlike a swordsman wanting to see the reach of his own blade. "I want to know more about this thing." Naruto admitted, not bothering to hide his fascination for the mysterious object. "At least, what's its name?" The young Leaf nin commented.

"It's called a Keyblade…"

What they had gone through less than ten minutes ago had put the two teenage boys in a state of alert, instantly putting them on edge when the new voice was heard on the clearing. Turning around, the two Leaf nins saw a strangely dressed man standing just a few feet away from them.

The newcomer had straight, blond hair, though several shades lighter than Naruto's, to the point that it almost appeared white, making the small beard on his face all the more difficult to see due to the paleness of his skin, but what stood up more of his character was the way he was dressed. He was wearing some sort of robe, mostly black with a strange belt containing three pouches across his waist, with what seemed to be a red cape over it and a black scarf around his neck.

The man gazed at the two boys, first Neji then Naruto, before setting his eyes on the key in the latter's hand. The two teenagers took notice of the strange, orange colored eyes as they appeared to be examining them. "And it's about time it returned to you…" His eyes didn't move to look at Neji's nor at Naruto's face, instead fixing on the blonde's stomach. "…Kyuubi."

Immediately, the boys' eyes widened at the newcomer's words. "What… What did you just said…?" Naruto managed to utter through the shock.

The strangely dressed man didn't bother to answer as he took a few steps towards the two boys. At his advance, the two shinobi automatically got into fighting stance, Neji with only one usable arm while the blond brought his newly acquire weapon forward.

"I guess it's not unusual to be wary after what you two have just gone through…" The man commented, though his tone did not reveal any concern for the teenagers' actions. "Maybe it would be better if we talked at a more appropriate location, don't you think, young Naruto?" The man's eyes finally fixed themselves on the blonde's.

If his body had taken a step back, Naruto wouldn't have been surprised, the newcomers' gaze bore directly on him and the Leaf genin felt as though they were staring right at his soul. The orange eyes hold the same pensive aura as the late Sandaime accompanied by the intensity he had only seen in the likes of Zabuza and Itachi.

The man brought his hand forward as a strange light appeared in his palm; the two boys immediately covered themselves from a possible incoming attack, but where helpless to do anything more as their bodies were engulfed by the white flare.

"What do you mean we have to move?!"

"I already told you brat! Madara will explain everything once we get there!"

"I was thrown around a whole goddamn mountain by that freaking bull; I can't just walk into some sort of battle field until I recover!"

"I don't remember you been such a whiner back in the day, I should take that sword from you, freeze the water bottle you called a body, and then destroy it with said sword!"

"Try that and I'll take Samehada and shove it so far down your throat that your stomach will be digesting shark fin soup for weeks!"

"What did you say you stupid brat?!"

"What? Getting deaf in old age?"

"Would you two just shut up?!" Karin's scream resonated through the cavern where the two Uchiha waited for the arrival of their comrades.

For a moment, Sasuke feared that if the previous tremors had not caused the room to collapse, his team's bickering in the staircase might just do it.

"Don't meddle in things that don't concern you, you stupid bitch?" Came Suigetsu's retort.

A light chuckle drew the raven haired boy's attention towards his "superior". "Akatsuki hadn't had such lively members since Dedaria…" The masked man commented, his eyes still glued to the strange portal at the end of the room.

"I dare you to say that to my face!"

"Ok, BITCH!"

The sound of a fist connecting was heard, following by the sound of water splattering on the floor.

It took a couple of moments, Sasuke summarized, for Suigetsu to reform himself, and soon enough, the back and forth commenced once again, lasting all the way into the cavern.

"My, it seems that some of you woke up on the wrong side of the bed today." The former Mizukage commented once the rest of Team Hawk and Kisame step into the room.

It took the three younglings less than a second for their eyes to widen at the sight of dark vortex in the opposite wall. "Hehehe… Zetsu owes me 5000 yen." Kisame said, not bothering to hide his amusement at the teenagers' reaction.

The Masked Uchiha let out another small laugh. "I guess is time to explain everything…"

"You got to be kidding me! That thing chose you?!"

The moment his body touch the floor, Naruto knew that they weren't in the middle of the clearing anymore, instead of landing on the grassy ground, he had ended up on finely cut wood. Looking around, the Konoha genin found himself in the middle of the Hokage's office with an irritating looking Tsunade looking back at him. "O-Obaachan?" The boy asked confused.

Tsunade's eyes shifted from the blond to the giant key he tightly held in his hand and then on the wounded Hyuuga at his side. "For Kami's sake, you got Neji involved in this too?"

At the blond woman's scolding words, Naruto's fighting spirit kicked in. "Hey, I didn't drag him or anything, he just followed me!" The Jinchuuriki exclaimed, trying to defend his position.

"You're welcome…" The black haired jounin sarcastically remarked.

"Naruto, are you alright?" At the sound of the urgent words, the blond teenager looked back to find Sakura rushing towards him. In the boy's first inspection of the room, he missed the rest of his team and Shizune standing in the back of the room.

"Sakura-chan… Wha-what are you doing here?" Naruto asked as his pink haired teammate knelt down in front of him and started to look over his body for any wounds.

"You two gave us quite a scare." Shizune commented as she moved towards Neji and started to treat his wounded arm.

Taking pity on the two boys' lost looks, Yamato stepped forward. "Hokage-sama called us and said that you were in trouble." The brown haired jounin started to explain.

"We were about to set out to find you when you… "Dropped in"…" Kakashi finished, his hand inching slightly towards his pocket where Naruto knew he kept his perverted book, now that the urgency of the situation had apparently passed, the silver haired jounin could fall back on his usual uninterested self.

"You appear to have been thoroughly beaten up though, so I guess there was some danger in the situation." Sai simply commented as he walked towards one of the office's chairs, apparently unaffected by the tension in the room that was eating the blond up.

Out of the corner of his eye, the blond caught something that made him turn his head slightly, in another chair, nearby Sai, sat the strange man that had apparently transported Neji and him to the Hokage's office.

The man's eyes fell on Naruto's once again, looking at the teenage boy as though he was figuring out a puzzle. "I guess you don't remember me after all, Young Naruto…" The bearded man simply wondered.

Naruto's eyes widened at the stranger's words, the tone that the robed man's voice carried told the boy that there was no trick, game, nor hidden meaning behind them. "What do you mean…?" The Jinchuuriki asked confuse.

A sight escaped the man before he answered. "Well, I take it upon myself to meet every Jinchuuriki." He took a pause before continuing. "After all, I have to meet the persons that carry those among the few I call my friends…"

The confusion in the room skyrocketed at the man's words. Shizune stopped mid healing, Sakura brought a hand up to hid a gasp, while Kakashi snapped his book close, and Sai leaned slightly forwards, clearly interested in the situation.

Chuckling lightly, the man observed the different reactions in the room. "It's always amusing the effect this piece of news has; Lady Tsunade's did not differ much from yours when I met her three years ago." The man commented.

Immediately, Naruto's eyes seek the woman that had moved to her desk. The Godaime Hokage merely nodded at the genin's silent question, confirming the man's words.

Another small laugh escaped the man; it was quite obvious that he regarded the whole situation as amusing. "I also like to meet the leaders of the villages that have a Jinchuuriki; I only had to make one trip to Suna when I met Young Gaara." He added before his eyes returned to look at the blonde. "It has been well over ten years since we met. I guess is natural that you would forget."

Naruto observed the man in front of him and tried hard to remember something, a picture, an event, a name…

– Flashback –

He looked up, a pair on young eyes set on the figure that had scattered the furious mob away.

The long red cloak waved in the wind blew through the alley. Kneeling down, the boy's savior extended one hand towards the fallen blond. "It's alright now, you're safe…" The man said with a soft voice.

Straining his eyes to see better, the small boy found himself staring at a pair of regarding, orange eyes. "Who… Who are you…?" He managed to ask.

The man simply smiled at the youngster. "My name is Ansem…"

– End Flashback –

The young Jinchuuriki forced his mind to retrieve something from his past, something to relate to the man that claimed to have met him before. "A-Ansem…?" The blond managed to let out thoughtfully.

A smile appeared on the red clothed man's face. "I'm glad you're able to recall my name, Young Naruto."

Said boy smiled merrily at the small accomplishment, he didn't remember the encounter, but he had managed to retrieve the man's name.

"Umm…" Sakura cut in slowly. "Ansem-san… What did you mean by calling the Bijuu your friends?" The young medic nin asked cautiously.

The man silently regarded everyone in the room before setting his eyes on the Hokage. The blond woman gave the seemly older man a small nod, approving the disclosure of the story. "I guess it's strange for people in this world to connect something like friendship to the Bijuu, they have been looked upon as monsters for so long, that's the only definition some people are able to came up with for them." He paused for a moment. "I guess, by itself, it is hard to believe that group of nine heroes took such beastly forms to save the Realm of Light…"

Everyone's eyes widened at the mysterious man's words.

– Flashback –

"Hey, Old Geezer!"

The sound of the young man's voice reached Ansem before he was even able to step outside. The blond man didn't need to see the source of the voice to know its owner, the mix of arrogance, pride, and confidence was a dead giveaway.

He didn't turn to look at Ansem, in fact, none of the other eight looked at him. Instead they were all staring pass the horizon at something he himself could not see. "We have decided…" The young man started once again. "To renounce our names until this whole deal is over." He started turned around as the silver key appeared in his hand and he set it comfortably in across his shoulder. Finally, his gaze fell on Ansem, though most of his eyes were hidden behind strands of orange hair, nothing eclipsed the confident smile he wore. "Until that day comes, we will be known as the Bijuu…"

– End Flashback –

Ansem's eyes flashed nostalgically for less than a second before he started again. "The Bijuu, as they came to be known as, were a group of nine brave warriors who gave up their humanity in order to save this world, as well as many others…"

A couple of seconds were deliberately given to the people present in order to assimilate what had just been revealed.

"W-What do you mean?" Yamato managed to ask, like the others in the room, apart of him was scared of whatever the answer might end up to be.

The red clad man took a few moments before he responded. "It all begun with that…" The bearded man said, his eyes solely fixed on the giant key held tightly in the blond genin's grasp.

Naruto looked down at the strange key in his hand. "This?" The blond asked as he examined it. "Keyblade… That's what you call it, wasn't it?"

Ansem nodded in responds before continuing. "The Keyblade is a incredible artifact, it is forged out of the power of one's heart as a shield to protect loved ones, or a weapon of destruction." The red cloaked man's words carried an ominous air. "In skillful hands, the Keyblade's power could be limitless."

To say that the young Jinchuuriki was amazed by the thing he held in his hand would be an understatement, the boy's eyes widened as he gazed down at the silver object that had appeared less than an hour ago.

"There are two basic types of Keyblades." Ansem's words snapped Naruto out of his trance. "The ones like Naruto's, are the embodiments of the Light in the wielder's heart and carry the name of Kingdom Key and represent the Realm of Light." The red clothed man explained. "But there is another kind opposite to it that stands for the Real of Darkness, those Keyblades are called Darkside…" His eyes narrowed slightly. "Keyblades take different forms, marked by the Keychain attached to them. As the wielder's power grows, so dose the Keyblade's, up to the point that the Keychain is able to evolve and take different forms."

The grave tone that Ansem's voice carried put everyone present on edge while at the same time held their attention tightly.

The robed man paused for a few seconds before proceeding. "Many years ago, a powerful sorcerer brought forth nine Darkside Keyblades and used them to collect the Darkness in countless of hearts, using its power to give birth to the Dark Keyblades." If anything, his voice had turned darker. "Nine Keyblades that exceeded the power of any other, nine weapons of chaos that were able to cast enough destruction to destroy world after world. Born out of human sin and driven by wrath and greed, the worlds would have been helpless at their onslaught."

No one in the room dared to interrupt the man's story.

"It was then that a group of young Keyblade wielders, which you would come to know as the Bijuu, rose up to stand between the sorcerer's Dark Keyblades and the worlds." Ansem's words were now tainted with a nostalgic tone. "Even though they knew that, no matter how strong they were, they would be no match for the power that evil sorcerer and the Dark Keyblades commanded…"

It was quite obvious that the cloaked man was having problems recounting that part of the story.

"And, because they also knew what was at stake, all nine of them made the ultimate sacrifice." The intense orange eyes wavered at the thoughtful memory. "They fully unleashed the power of their own hearts, pouring it all into their own Keyblades and producing a miracle." A small, content smile appeared on the aged man's face. "They created the Light Keyblades."

"Once the odds were evened, the Bijuu were able to fight off the sorcerer's advance." Once again, the saddened look returned to Ansem's face. "At the final stage of the war, Kyuubi and the others were finally able to stop the Dark Keyblades and vanquished the sorcerer." A pause. "Sadly, it was then that the effects of theirs sacrifice came forth. When the nine of them unbounded their hearts to create the Light Keyblades, they willingly forfeited one irreplaceable thing… Their humanity…"

Sakura and Shizune gasped, Sai's and Neji's eyes widened, while Naruto's hand gripped his Keyblade tightly.

"Because of their unbounded and limitless hearts, the Bijuu lost their memories and were turned into the beastly forms that you all have come to know and fear." Ansem's voice sounded incredibly old to Naruto at the moment. "Afterwards, the Keychains from the Dark Keyblades were lost away as they fell into the Darkness while the ones from the Light Keyblades were scattered throughout the worlds." The blond man had composed himself once more, his voice coming out strong and his orange eyes showing their intensity once again. "Despite the form they now held, I couldn't bring myself to separate the Bijuu, so I brought them to this world to live together in the peace they have made possible."

Kyuubi remained silent inside his Jinchuuriki, but Naruto could feel the uneasiness that the man's story had caused on the fox.

Ansem raised his head firmly, the intensity returning to his orange eyes with full force, and all hesitation was obliterated from his voice. "For many years I watched over the Bijuu, when you started to seal them inside of other humans, I knew I could not look after them directly, so I was reduced to be an observant." The robed man explained. "But now I cannot stand by any longer since the nightmare is starting once again." His eyes narrowed again. "The group known as Akatsuki captured the other eight Bijuu and used the power of their hearts to unleash the same power that the sorcerer used so many years ago."

"What?!" Naruto exclaimed, the Keyblade in his hand held tightly as his eyes widened in disbelief. Even if he didn't understand the situation completely, he knew enough to worry, especially if Akatsuki was involved.

Closing his eyes for a second, the strangely clothed man prepared the response. "Do you remember the creatures that attacked you and Young Neji?" He waited for the younger blond to nod. "They are called Heartless, monstrosities created when a person's heart is taken by the darkness and with the only goal of seeking other hearts. The fact that they're able to prowl around in the Realm of Light is evidence that the boundaries between Darkness and Light were tampered with yet again and the nine Darksides have been awakened"

His throat felt to be blocked to the Konoha genin had to force the words out. "What… What's going to happen now?" The moment teenage boy said this, he was already dreading what the answer would be.

A sight escaped Ansem. "I'm sure that the first thing Akatsuki is going to do is recover the Dark Keychains and seek warriors that will be able to unlock their power." His fists were clenched tightly. "It won't be long before the Heartless are freely raiding all the worlds."

"Bu-But there has to be something we can do!" Naruto exclaimed as his eyes desperately looked at the red clothed man for an answer.

A knowing smile formed on Ansem's face.

"You got to be kidding me…" Suigetsu remarked as he look from the masked Uchiha to the strange vortex and back again. "You expect me to believe that this thing." He pointed at the mass of dark energy. "Will take us to different worlds?"

Chuckling lightly at the young swordsman's comment, Madara nodded in response. "I guess it's a little hard to believe, but yeah, the Corridors of Darkness will take us to places you couldn't even imagine in your wildest dream." The Uchiha's voice had turned from eager to sadistic.

Sasuke slowly look down at the golden key in his grasp. "What you say about the Dark Keyblades… Will it really grant me power?" The young teenager asked as he looked directly at his relative.

Madara nodded once more. "More than you ever thought possible, it would be more than enough to make up for your… "Generous contribution" of the Eight Tailed Bijuu." Every one present could bet that a smile had formed behind the mask.

Suigetsu scoffed, not bothering to hide the fact that he was still skeptic. "I'll believe it when I see it…" The white haired teenager commented.

A smirked was hidden by his mask as the Sharingan user turned to look at his subordinates. "Then… Shall we?" Turning around, the man walked into the dark vortex.

With some hesitation, the other member of Akatsuki followed suit.

The smile in the blond man's face surprised everyone. "What we can do, Young Naruto, is follow the path that the Bijuu treaded for us so many years ago." He began to explain. "You have to think of the Keyblades as sentient entities, and, despite being scattered throughout different worlds, the Light Keychains still exists out there. I'm sure that they have sensed this catastrophe coming and have already chosen warriors with strong hearts that will be able to unlock their power." Ansem brought one of his hands to his robe and took out several silver Keychains, identical to the one in Naruto's Keyblade. "I have search different worlds in order to find the Keychains from the Kingdom Keys held by the Bijuu. Before today I had found six, I guess the seventh was with you, Young Naruto." His gaze fell on the Jinchuuriki.

Naruto's eyes dropped down once again to look at the keychain hanging from his Keyblade before looking back at the ones held by the older man.

"Even if we don't have all nine of them yet, we will have to find the six warriors that will inherit these Kingdom Keys, while also search for the Light Keychains." The robed man explained.

The young blond regarded his Keyblade once more as he tried to sense the fox inside of him, who remained silent. Naruto's heart hurt slightly now that he had heard the story of the Tailed Beast's past, how much he had hated the fox, not knowing of the great sacrifice that he and his comrades had done. "I'll do it!" The genin suddenly exclaimed. "I will find the other warriors, recover the Light Keychains, and finish what Kyuubi started! If he gave everything he had to stop the Darkness, then I will do it too!"

Ansem smiled at the younger blonde's outburst. "I owe you an apology, Young Naruto…" The man commented, causing the teenage boy to look at him confused. "When I first saw you holding the Kingdom Key, I thought that you had been chosen simply for being Kyuubi's current host, but now… I see that the Keyblade chose you because of the strength of your heart." Naruto grinned slightly embarrassed at the words of praise. "Remember, that humans do not have anything more powerful that a strong heart." The robed man informed while Naruto nodded in understanding.

"I've been wondering…" Kakashi's words caused everyone to look at his direction. "What do you mean when you say "worlds"?" The silver haired man asked.

A small smile appeared on Ansem's face. "I mean just that…" The man explained. "In the Realm of Light exist an incredible number of worlds completely independent from each other, almost to the point of being a whole different reality. Normally, the boundaries between worlds should never be crossed, but, in this time of crisis, there is a need to break those edges if we ever hope to find the warriors who will be able to stand up against the power of Darkness."

"But how can we get to these worlds?" Naruto asked, not quite understanding what the robed man had revealed. "It's not like we have some kind of ship that could get us to it…"

The older blond merely smiled at the Jinchuuriki before he pointed at the Kingdom Key in the teenager's hand. "You have all that you need to reach the other worlds right there." He informed. "The Keyblade is such a marvelous artifact that, when used correctly, it can even open passages that connect different worlds."

Naruto looked down at his Keyblade with amazement once again; the mysterious object was becoming even more fascinating by the second.

"But you will need help finding the Keyblades, since they more than likely hid themselves, they won't appear to be more than random objects to the normal person." Ansem explained "We'll need someone whose eyes are beyond average, someone that has eyes like the Byakugan…" The older man's eyes turned to look at Neji.

Understanding the man's words, the black haired Hyuuga tried to stand up, but was stopped when Shizune's hands took a hold of the wounded arm she had been trying to heal for the past couple of minutes. "Neji-san, you can't!" The medic nin exclaimed. "No matter how hard I try, I can't heal the wounds in your arm. As a medic, there's no way I can allow you to go in such a mission like this!" The black haired woman declared.

Neji merely narrowed his eyes as he pushed his body to stand up, managing to free his arm in the process. "That's not important at the moment!" The Byakugan user exclaimed. "You heard what Ansem-san said, we don't have much time before Akatsuki gets a hold of the Dark Keyblades' power, and, when that happens, those things will have a free pass to attack us. I can't just stand here and wait for my arm to heal without doing anything about it!"

While the Hyuuga tried to explain his position, Ansem silently walked towards him. Standing in front of the young jounin, the red clothed man took hold of the teenager's injured arm and lifted it, causing Neji to wince in pain. "A Heartless' attacks are meant to cause something even more terrible than death, they really only leave wounds, but, when they do, it takes a long time for them to heal." Orange eyes set on the black haired boy. "The Heartless that attacked you and Young Naruto are called Shadows and Neoshadows, but believe me when I tell you that there are far worse things out there."

The Leaf jounin freed his arm as his eyes met the older man's. "I don't care…" Neji stated. "I will do anything that I can in order to protect those who I care about, even if it means facing those creatures a thousand times more." The Hyuuga declared as his fist tightened in determination. "If it's to protect the people important to me, I'll willingly forfeit my life!"

"Please, Neji-niisan, don't!" The sudden outburst caused everyone to turn around. One Hyuuga Hinata stood at the door of the Hokage's office, here face immediately turned red when she realized that everyone's eyes were set one her.

Neji was the first one to find his voice. "Hi-Hinata-sama, what are you doing here?" The young jounin managed to ask.

The Hyuuga heiress' face turned several shades redder. "I-I came here to bring a report from my team, since Kurenai-san is on her maternity leave, but when I got here-I really didn't meant to listen in the conversation! But… but I can't let Neji-niisan risk himself like this!" The young girl exclaimed.

The black haired boy gazed warmly at his cousin, touched by her concern. "Hinata-sama, I have to do this." He tried to explain her. "You must have heard what Ansem-san said, the Byakugan is needed in order to find those Keychains." The young man hoped the he had convinced her.

"Then I'll do it!" Hinata declared. "I'll go instead."

His cousin's announcement was the last thing Neji expected. "No!" The teenage boy exclaimed. "Forgive me my rudeness, Hinata-sama, but there's no way I'll let you go in such a missions."

Fighting the urge to step back, Hinata looked up and met her cousin's gaze. "Don't underestimate me Neji-niisan, I'm already a chuunin and I can take care of my self, so I can take over your place and accompany Naruto-kun in this mission." The girl firmly stated, but her face soon turned red once again when she realized the implications of the last part of her statement.

Neji's retort was cut off when Sai suddenly stood up. "Don't worry about your cousin, Neji-san. I'll go along as well and watch over her." The boy said with a smile on his face.

"What?!" Naruto exclaimed, taken by surprise by Sai's announcement.

Ansem stood pensive for a couple of seconds as he regarded the situation. "It's actually not a bad idea." He simply said.

"What is?" The blond genin asked, hoping for some clarity to his confusion.

"Lady Hinata does possess the same Byakugan as Young Neji, while Young Sai's abilities will come in handy when fighting against Heartless." The cloaked man explained. "I believe that the four of you will make an excellent team." He added.

Naruto looked at the older blond even more confused. "The four of us? But there's only three." The genin pointed out. "Who's the fourth? Is it you?"

A bright smile appeared in Ansem's face as he put away the Keychains and extended his hand once again. "No, Young Naruto. The last member of your team is someone that has already been in a situation like this." A flash of blue light went off in the room, revealing a blue and gold Keyblade in the robed man's hand. "Let me present you to my own Keyblade, the Star Seeker." The man announced. The Keyblade that he held was very different from the Kingdom Key, apart from the colors, this one had a star pattern running up its blade, culminating in a golden crescent moon with a star in the middle. "It's not as powerful as the Light and Dark Keyblades, but it will be enough to bring the fourth member here."

The jinchuuriki's confusion only grew bigger when the red clothed man suddenly directed the blue Keyblade at his stomach.

Ansem started to concentrate the power of his heart, causing a light to gather at the end of the Star Seeker. "Come forth! Keyblade Master!" The robed man exclaimed. A flash of light blinded the room.

Rubbing his eyes as he tried to regain his vision, Naruto found himself seating in the floor of the Hokage's office, for some reason his body felt so weak he couldn't even gather enough strength to stand up. Finally able to see again, the blonde's eyes caught something orange and furry stirring just a couple of feet in front of him in the middle of the office.

As everyone's sight returned, all eyes were drawn towards the moving, orange mass laying on the floor. "Allow me to introduce to you…" Ansem's words cut in. "Former Keyblade Master and savior of the Realm of Light, Kyuubi." He announced with a bright smile on his face, eyes set on the small fox that struggled to stand up.

The creature was about the same size as a small cat, a pair of furry ears perking up as he lifted his canine head and red eyes meticulously observed the people in the world with a unique combination of hesitation and arrogance.

None of the shinobi present dared to say anything until… "HAHAHAH…!" Naruto suddenly started laughing out loud, soon clenching his stomach as his eyes watered from all the laughter. "No way…! No freaking way….! HAHAH-AHH!" Been preoccupied with his amusement, the blond did not realize that the object of his glee moved towards him and bit him in the ankle. "What the hell?!" The genin exclaimed.

"I've waited sixteen years to do that…" All of the Konoha citizens in the room gasped when the words came out of the fox's mouth. "Now what the hell is going on? How am I out of the seal?" The peculiar creature inquired, paying no attention to the others bewilderment.

Ansem took a few steps forward and stood in front of the fox. "It's good to… See you again, Kyuubi…" The man said as his orange eyes gazed warmly at the small being.

Kyuubi looked up, red eyes gazing into orange. "Ansem…?" The words came up with hesitation.

"Do you… Do you remember him?" Naruto asked as he looked from the fox to the robed man and back.

The newly freed Bijuu looked back at his former host for a second before returning his sight to its previous target. "No, just that name…" The fox answered.

"I'm not surprised that happened, you lost your memory many years ago." Ansem began to explain. "I was only able to retrieve a small part of it, and even that is still locked somewhere inside your mind, you should remember more when you find things that will trigger those memories." He pointed out.

"But… But how is this possible…?" Shizune asked once she was able to find her voice. "I mean, the Yondaime sealed the Kyuubi no Kitsune years ago, how is he free now?" The medic nin asked, her eyes seeking the blond man for answers.

"More importantly, why is he in that form?" Kakashi added, his voice obviously carrying a mocking tone as most of the fear he had held towards the Nine Tailed beast started to dissipate little by little.

Ansem chuckled before answering. "I used my own Keyblade in order to unlock the Yondaime's seal. Sadly, I'm not strong enough to create a more suitable body for Kyuubi. I guess this will have to do…" The man explained, his voice too hinting a tone of amusement.

Said fox looked at his new body. "This is disgraceful, me, Kyuubi no Kitsune, being reduced to a house pet!" The Bijuu ranted. He knew that he shouldn't complaint now that he was finally free, but still, being ankle height…

"Anyways…" Tsunade cut in, trying to take back some control over the situation. "Controversial team members aside" Her eyes gazed at the small creature and her mouth gave a slight twitch as she try to suppress the urge of going off into a fit of laughter herself. "We still have a very important mission to deal with." The sudden seriousness in the woman's voice caused everyone, including the fox, to tense up. "You have one hour to prepare for this, I want the three of you-I mean, the four-Better yet, three and a half," The furry creature let out a growl at those words. "to report back here ready for the mission." The Hokage ordered.

"I heard that you're going on a really important mission." The unexpected sound of her sister surprised Hinata.

Turning around from her half filled bag, the young chuunin set her eyes on the younger Hyuuga. "Ha-Hanabi-chan…"

"Neji is informing Otou-san right now, he sounded worried." The young girl commented as her eyes observed her older sister as though they were judging her.

Hinata fought the urge to start fidgeting as the black haired girl's gaze burned into her. "Yeah… Neji-niisan doesn't really support the idea of me going in this mission… Bu-but I know that I'm more than capable to do it! I won't be nuisance for Naruto-kun and Sai-san!" She tried to convince both her sister and herself.

Without commenting on her sister declaration, Hanabi turned around and started to walk out of the room. "Good luck…" The young girl said before she disappeared from the older Hyuuga's sight.

A small smile appeared in Hinata's face as a small tear, born out of happiness, tempted to run down her face. "Thank you… Hanabi-chan…"

Sai placed his inkbrush back into his backpack as he look over the piece of paper in his hand once again. Satisfied with his work, Sai stood up and left the piece of paper in a place where he was sure "experienced" person would be able to find it.

The black haired boy had taken the mission's urgency as an excuse not to have to inform Danzou about it, instead opting to leave a letter explaining everything, or at least everything that Sai deemed safe to inform him, about the situation. The young shinobi would deal with the aftermath of his decision later.

Picking the remaining of his supplies, Sai caught something out of the corner of his eyes. Turning around, the young painter found himself looking at the one title he had never written.

After a couple of seconds of consideration, the Ne member, or ex-member, he wasn't sure of what his status will be after this day, walked across the room and took the piece of paper with the word "Friends" and placed it on his bag.

"You know, I'm surprised that you're going along with everything…" Naruto commented as he packed what he needed for the mission. "I thought for sure you would start ranting with one of your speeches, I'm the Kyuubi no Kitsune! Behold my power! I usually zone out after that." The boy said as he turned to look at fox.

Said Bijuu scoffed at his former host's words. "You heard what that Ansem guy said, I apparently have unfinished business with those Dark Keyblades, and I'll be damned before I leave a job half done!" The small creature declared.

Naruto merely chuckle at Bijuu's words. "Such a heavy sense of pride for someone who can only reach my ankles." The genin mocked as he returned to his packing.

Kyuubi scoffed at the blonde's words again. "And you're pretty ungrateful to the being that saved your sorry excuse for a life so many times." The Tailed Beast shot back as he jumped into the room's single couch.

"Whatever…" Naruto responded, letting out a small laugh. Finish packing, the Konoha shinobi turned around to face his former tenant.

To the teenage boy's surprised, the small fox was laying curled up and fast asleep in the couch.

"I guess this is the first time you got to lay down in something that soft… At least the first in a long time…" The blond thought. Walking towards the couch, the genin tilted the piece of furniture forward, causing the fox to fall off.

"What the hell was that for?!" Kyuubi exclaimed as he looked up at the Leaf genin in anger.

"For my ankle" Naruto responded. "Now come on, we have to go. Obaa-chan is waiting for us." The blond simply stated.

"I'm glad to see that Kakashi's tendencies haven't rubbed off on you…" Tsunade commented as Naruto walked back in her office five minutes before the one hour time limit ended.

"She didn't even let me leave in fear that I might not return in time." Kakashi commented from one side of the office without even looking away from his book.

The blond genin looked around to find everyone already waiting for him. "Before you go, please take this." Ansem said as he gave Hinata a small golden box. "This will help you hold the Keychains you'll find, I've already placed the six Kingdom Keys in there, they'll know once their wielder appears, you're eyes should be able to catch it too…" The cloaked man commented and waited for the young chuunin to nod in understanding.

"Can't we get started already? If this matter is as serious as you're making it sound, I feel like we're wasting too much time." Kyuubi commented, satisfied at the small cringe his body caused on the people present. Despise the Bijuu's current "situation", it was good to know that he could still incite some fear, no matter how small it was.

"The furball is right…" Tsunade declared before looking at Ansem. "Whenever you're ready."

The blond man nodded as he summoned the Star Seeker back to his hand and extended forward. Naruto couldn't hold back a gasp as a white vortex appeared against one of the office's wall. Turning to face the three shinobi, Ansem gave a small smile. "Well, it's ready…" He announced.

The former Jinchuuriki nodded as he silently scolded his body for shaking slightly at the sight of the weird portal.

"Naruto…" Sakura's voice snapped the young blond out of his trance.

Turning around, the blonde's eyes widened as he saw his pink haired teammate lean towards him and kiss his cheek. In less than a second, the genin's face turned red, while a matching blush appeared on Hinata's with a snicker and a perverted chuckle from Kyuubi and Kakashi.

"That's all I'm giving you!" Sakura declared, unable to look at Naruto in eye, not that the blond was in a better condition. "In exchange, you have to promise me that you'll come back safely…" She stated, finally able to look at her teammate and leaving the blond no other option but to nod in agreement.

A small laugh was shared by the other occupants in the room.

Still smiling at his teammates' antics, Sai turned his head towards Neji. "What?" The Hyuuga asked when he realized that the painter was looking at him. After a couple of seconds, the jounin's white eyes widened when he recognized what the other black haired boy wanted. "No way! I'm not going to kiss you goodbye!" The Byakugan user exclaimed.

"Why?" The socially challenged shinobi asked. "I read in a book that it's normal for friends to say goodbye to each other with a kiss…" Sai commented.

"Where did you get the idea that we're friends?!" The Hyuuga prodigy asked.

Sai tilted his head to the side in confusion. "Well, Sakura already said goodbye to Naruto, and you can't kiss Hinata goodbye without it been too weird, so I just thought…"

"It's even weirder for two men to kiss each other goodbye!" Neji tried to explain the other black haired boy.

In order to stop the, one sided, argument, Shizune walked towards the painter and planted a small kiss on his cheek. "Take care of yourself, ok." Sai smiled and nodded. "There problem solved…" The medic nin whispered to the black haired Hyuuga as she walked back to the Hokage's side.

"Whatever…" Neji muttered.

It took years of self-control for Ansem to be able to stop laughing; moments like these reminded him of the wonders of humanity. "Well, now we really are wasting too much time…" The robed man commented.

Everyone nodded in agreement as the members of the odd four-man team walked towards the white vortex.

"Good luck out there…" Yamato wished as he gave the three teenagers, and the fox, a smile.

"And remember not to embarrass our world." Kakashi added, receiving a glare form his former student.

"Be careful…" Naruto wasn't sure who said that because the next second, he was swallowed by a blinding light.

When he finally regained consciousness, Naruto found himself lying on a rocky ground. Looking around, the blond saw his companions stirring as they too started wake up.

"Where are we…?" Sai questioned as he shook his head.

Unable to answer his friend, the blond genin looked around in order to find an answer. There were many trees in the surrounding area, but what really stood out was the immense, dark tower that rose into the clouds. "Maybe we should go there…" Hinata said as she followed the boy's gaze.

Naruto looked down at Kyuubi to find the fox staring intensely at the tall building. "We might as well do…" The blond said. "We need to start somewhere, after all." He stated as he started walking towards the tower.

As the group moved closer to the belfry, they could see an enormous black door with something resembling a face stuck in the middle.

"Who are you?!" Needless to say, it came as a surprise to the four of them when the face suddenly talked and stretched forwards to look at the group. "What do you want here?" The face asked as it bathed the group with light coming out of its eyes.

"I-we… I mean…" Naruto was unable to form a coherent sentence as the face observed them.

The Bijuu was the only one who wasn't in complete shock about the strange door, instead his eyes were looking right back at the face's as a look on concentration set on the fox's face. "I think I'm remembering something…" The Tailed Beast commented.

Naruto shifted his eyes towards the orange fox, mildly surprise that a part of his memory was already returning to the small creature. "Wait a minute…" The face's voice interrupted the blonde's train of thought. Looking up at it, the genin saw its gaze set solely on Kyuubi. "You feel almost like an…"

Something triggered in the Bijuu's mind. "I remember this place!" The fox announce right before the sudden realization of what's going on with the door hit him. "Oh…shit…" Kyuubi groaned at what was about to happened.

"AKUMA!"

A/N – And there you have it, this project got its name not because it's going to be the best crossover story ever written, I'm not that arrogant, but because it will bring many different worlds together under a common plot. Like I stated before, I've changed the ideology behind the Keyblades for the sake of this story, especially about the different Keyblades that will appear, so please, bear with me.

Now, I can't help but wonder, what world do you expect Naruto and his group, or should I say party, to visit? Who do you think will be the warriors chosen by the Keyblades? And what Keyblades do you reckon they'll receive, I like to take this moment to state that I will not use fan-made Keyblades, unless I have an image of it, it's not that I have anything against them, but because Keyblade are really hard to describe sometimes, so it'll be better if the readers to have a picture to refer to. Please, do share your thoughts. Thanks for reading.