AN: Nothin' much to say, hope you enjoy.
Naruto:
The atmosphere in the leaf village over the next couple of days was one of tension, everyone expecting an attack that continued failing to occur. In the aftermath of the fight, the Chunin exam had been suspended for the time being, it was reasoned that everyone still in the tournament had already demonstrated Chunin level ability in helping capture the rogue Sannin. That night, Naruto told Sasuke what he had learned about Itachi, at first, the boy had laughed awkwardly, thinking it some bad joke, then the boy had grown nervous as the truth began to take hold. Asking Naruto to stop, to tell him it was all a lie. In its time, that had given way to bitter grief, mixed in equal measure with his rage. Naruto had held his brother and cried with him anew as the dark haired boy howled his lament through the night. The next morning, they had reaffirmed their purpose, revenge, but no longer against Itachi, that ship had sailed.
Later in the day, Naruto was taken aside by Kakashi, Jiraiya and the Hokage, following nervously as he was half guided, half dragged to a small interrogation room in the centre of the ANBU building. Then the three had attempted, gently but firmly, to interrogate him as to how exactly it all had happened. The boy told the truth for the most part, primarily because it allowed him to keep other things secret. He told the three shinobi that Kurama had informed him of his suspicions regarding the disguised Orochimaru, and that he had decided to test that suspicion by approaching the Sannin. The boy tried to make it sound as though the fox was working from some intuition rather than a power, at present the emotion sensing was his single greatest advantage and he wanted to keep it a secret. Naruto told the three that his father had explained to his mother how the rasengan worked when he was trying to master it, and that Kurama, sharing her body, had remembered the steps involved.
"Are you telling me the ninetails taught you the rasengan?" Jiraiya asked, incredulous.
"Not just the rasengan," Naruto answered. "That glowing thing is because of him too. As far as I can tell, that's what happens when he pumps my body with as much chakra as the seal allows."
"Naruto…" the Hokage said hesitantly, his voice gentle. "I do not intend to hurt you here, but I must say, the fact that you have taken the Kyuubi as a teacher is deeply concerning. There are a thousand ways it could manipulate you without you even knowing, it could turn you against the village, bend you to its will."
The boy responded with an angry huff. "Kurama has shown me more loyalty in the last month than either of you ever have," he pointed at Jiraiya and the Hokage in turn as he said this. "As for you," the boy turned to Kakashi. "I don't even know what to think of you anymore, you knew my parents, were close with them. You took me as a student, you were even a good teacher, a great teacher. But you never even told me you trained under my dad, or that you took care of my mother while she was pregnant, or that, according to Kurama, you checked in on me nearly every day as a kid, right now, I can't tell if you're my closest ally or the biggest liar of the bunch." The boy trailed off, his words turning bitter.
Kakashi hesitated. "Naruto… how did the Kyu-… Kurama, how did he know I was checking in?"
Naruto tried to think of a convincing lie, feeling the fox tugging at his body, he didn't resist, allowing Kurama the courtesy of speech. "I saw you out the corner of Naruto's eyes once or twice when he was growing up. He didn't know you, but I knew you well enough by then, I watched you grow up, after all."
Neither Kakashi nor Hiruzen flinched as they heard the fox speak. Jiraiya, never having heard it before, let out a small curse, leaning down to look into Naruto's eyes. "Listen here creature, If you do not give Naruto back right now, I will alter that seal on the boy's chest to fill your every waking moment with agonizing pain, am I understood?"
The fox rolled Naruto's eyes angrily before he replied. "I am far too old and far too large to be intimidated by the likes of you, Toad Sage. Regardless, the boy remains in control, with this seal in place, I only have as much power over his body as he willingly allows me."
Jiraiya ignored the words, reaching out to lift Naruto's shirt up to his ribs and thrusting a palm into his stomach. The black mark of the seal began to emerge and Jiraiya's hand began to glow.
Inside Naruto's mind, the fox fell silent. "Stop," Naruto said, concern touching his voice. "Don't hurt him." Jiraiya glanced up at the boy, hand still pressing against the boy's stomach.
"Naruto, are you okay?" He asked urgently. "Did it hurt you?"
The glow from Jiraiya's hand intensified and the mark on Naruto's chest began to shift and flicker, changing its form as new markings were added to the complex symbol. Inside his head, Naruto heard the fox begin to scream.
"Stop it, you're hurting him!" Naruto cried out, panic cutting into his words as he moved to push Jiraiya's hand away, the boy found two pairs of hands restraining him, Kakashi and Hiruzen holding him in place.
"It's for the best, Naruto." Jiraiya said gently. "We only want to keep you safe, this should keep him in check."
Naruto wailed, his voice eclipsed by the screams emanating from the great spirit within him, he struggled fruitlessly against the men restraining him, their hands held firm as iron against the small boy's attempts. The boy gave up trying to fight them, instead focusing on the cries of the fox within himself, trying desperately to comfort the tortured creature.
Naruto focused so hard on the voice of the fox that, quite unexpectedly, he blacked out, his head slumping forwards as his body went limp in the ninja's arms.
"Is he okay?" Kakashi asked, disturbed.
"He's fine," Jiraiya responded, his own voice far from calm. "Once we save him from that thing, he'll be right as rain."
Inside:
Naruto opened his eyes, finding himself in unfamiliar surroundings, it looked like a flooded sewer tunnel, almost completely dark but for the faintest trace of sourceless light, barely enough to see by. Across from Naruto, the tunnel was blocked off, huge, wide red bars jutting from the unseen ceiling to the water covered floor, at their center, a piece of paper hung from one bar, bearing an exact copy of the seal on Naruto's chest. Behind the bars, Kurama was screaming, his whole body writhing in agonized jerks as great iron spikes materialized in the air above him, slamming themselves down into the creature's flesh, eliciting fresh yelps and howls of pain.
Naruto watched the scene unfold, helpless to aid the creature. "Kurama," he said in a small voice. "What can I do Kurama?" The fox did not answer, its focus drawn by the spikes still continuing to embed themselves into its massive form. The boy sank to his knees.
Naruto felt sickened, watching the scene unfold, there was nothing he could do, he lacked the power to fight off the other ninja, or the knowledge to repair the harm they were causing, Kurama was not aware enough to answer him, Naruto was lost. Only one idea came to him, a stupid idea, the most stupid idea. One that he would almost certainly regret when it came down to it. Naruto breathed deep to calm himself, the choice was out of his hands, he could either follow through on his one stupid idea, or make his peace with the fact that his body was being used to torture someone. The very thought sickened him. Naruto made his decision and stood. Purposefully, the boy walked over to the seal marking the red gate, reaching out a hand as he began to peel the paper from its place along the bars of the cage. As he did so, the spikes began to recede, the beast's yowls of pain stopped, it lay panting in the shallow water, before slowly turning its head to face the small boy. The great red cage disappeared. The mighty fox slowly rose to its feet, standing tall even in the confines of the sewer, when it had been lying on the floor, Naruto had not quite managed to grasp the sheer scale of the thing. The Kyuubi dwarfed Naruto with its presence, gazing balefully down at the boy with its two massive eyes, the sense he got from it, inscrutable.
The boy suddenly felt very small. Trying his best to shake off his timidity, Naruto looked up at the creature, both hands down by his sides, one still holding the rolled up remnants of the seal. "So," the boy asked. "Was it all a lie? Were you really just trying to gain my trust so that I would free you or were you honest about wanting to be friends?"
The gargantuan fox did not respond, it simply continued staring at Naruto, its expression undreadable.
Dimly, as though from very far away, Naruto heard a voice calling out. "He's broken the seal! We need to restore it, now!"
The Kyuubi turned its head up at the noise, Naruto felt the creature asserting control, leaving him unable to resist it as he had before. Naruto fought to hold back the tears as he gazed up at the beast. "Please," he pleaded. "If what you said to me meant anything to you at all, please don't kill them."
The Kyuubi cast a single enormous eye down towards the boy, seeming to consider him for a moment before it finally responded. "… Fine."
Kyuubi:
Jiraiya flinched backwards as the boy raised his head to look at him, the red, slitted eyes of a thing staring out from the blonde boy's face. "Naruto," he said sadly. "You would side with the thing that killed your parents over us? Do you really hate us so?"
The creature broke free of the hands holding it with extraordinary ease, before it lashed out with the small boy's fist, its movements jerky and unnatural within the child's frame. The punch caught Jiraiya in the shoulder, forcing him backwards against the reinforced wall of the interrogation room. The impact sent cracks radiating through the solid concrete. Jiraiya lay prone, unmoving.
Both Kakashi and Hiruzen moved to intercept the possessed child, the Hokage moving to block the doorway while Kakashi charged forward, his hand charged with the form and shape of a seal, powerful enough to restrain the beast long enough to replace its true binding.
As Kakashi's hand moved to strike the thing, it vanished, leaving not a trace of itself behind, the movement had been so fast Kakashi hadn't even glimpsed it. The boy reappeared, crouched against a corner where wall met ceiling like some kind of sick spider, it gazed down at him, an almost puzzled look on its face.
Kakashi turned to face the thing, readying the sealing jutsu once more, he could not fail, or Naruto would be lost, the silver haired ninja surged forwards. The form of Naruto disappeared from the wall in a flash, Kakashi turned his head as he looked around the small room, trying to find the boy. Then, quite suddenly, everything faded to black. Kakashi fell to the ground with a thud.
The monster stood over the crumpled form of Kakashi Hatake, looking down at him with an unreadable expression. Sarutobi blocked the door, the only thing he could do. The creature turned to look at the old man, a look of what could almost be called contempt flashing across its eyes, before it charged. The Hokage braced himself, only for the impact to never come, instead, beside him, there was a thunderous crash as, instead of using the door, the creature simply threw itself through the foot thick concrete wall, exiting into a small hallway and firing itself again, this time through the roof. The small monster crashed through three floors of the reinforced structure before emerging into open sky, where it landed on the roof. Sarutobi followed. The boy stood on the steel and stone latticework of the rooftop, looking down at its feet. Sarutobi kept a safe distance, a few meters behind it.
"Naruto…" Hiruzen tried hesitantly. "I hope you can hear me. I just want you to know that when you regain control, we will not blame you."
The blonde boy turned to look at the old man, moving not his body but only his head, tilting it backwards at a strange angle to look over his shoulder. The only response the demon gave was a wide, ear to ear grin, lips stretching thin to reveal unnaturally sharp teeth. Then, with a flash, Naruto was gone.
AN: Interested to see what you guys think of that one.