Reincarated with Nanites

~Omniscient Pov~

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"ARGHHH!!!!!"

The child's rapid breathing slowed as the flood of memories settled in his mind. He clenched his fists, feeling the rough texture of calloused skin—proof of countless hours spent training, struggling, and failing.

"Konoha... the academy?" he muttered, his voice hoarse. It was all familiar, yet distant, like echoes of a life long forgotten... The lessons, the laughter of prodigies who soared while he remained grounded, the scornful glances of instructors who saw him as nothing more than another dropout.

His mind pieced everything together... He was an only child, nameless in the grand scheme of things. A mere civilian-born child, weak, lacking chakra reserves strong enough to amount to anything significant. He had trained, studied, pushed himself to the limit—and yet, he had remained talentless. Powerless. Forgotten.

But now… something was different.

He looked down at his trembling hands. The weight of his own body felt off, lighter yet denser, as if something had fundamentally changed. His breathing steadied. His mind, once clouded by fear and confusion, sharpened.

Then it hit him—this wasn't just a dream, nor a hallucination. He wasn't just reliving old memories. He was back. But how?

"I... I was working in my office and then... Everything went black..." He spoke to himself as if it was only a moment ago. He looked around the room once more, seeing himself in a neatly organized room. However it felt odd to him, he knew of this room. But, he didn't.

"Did... Did I die when I blacked out or something?" He rubbed his head trying to organize his thoughts carefully, but the thought seemed likely. He quickly looked down at his body, realizing that this was far too real to be a mere hallucination.

However, that wasn't the strangest thing to him, he oddly recognized some of the memories he now had. The uniform the adult teachers wore, the language, the scenery, the classes, the powers near everyone held?

"No... It's exactly like Naruto." An old anime he watched when he was much younger, he had finished the entire series, but never got around to watching the sequel, Boruto. 

'No, I need to gather my bearings-' Before he could finish gathering his thoughts. He heard footsteps, as he turned around, he saw a woman with raven colored hair, late twenties, beautiful to boot. 

"Hayatou! I-Is something wrong!? I heard you scream, are you ok?"

He knew this woman... It was his mother, at least based on his new memories...

"I'm.. sorry mom. I just had a nightmare..."

His voice trembled slightly as he spoke, still trying to adjust to the sheer absurdity of the situation. Calling her "mom" felt both natural and foreign at the same time, like wearing a familiar coat that didn't quite fit right.

The woman—his mother—sighed in relief, kneeling beside him and brushing his dark, sweat-matted hair back with gentle fingers. "You scared me, sweetheart. It must have been a bad one," she murmured, her voice soft and warm.

Hayatou—if that was truly his name now—nodded absently. His mind was still spinning. This woman, his supposed mother, felt real. The warmth of her touch, the concern in her deep brown eyes, even the faint lavender scent clinging to her clothes—it was all too real.

He swallowed hard.

If this was truly the world of Naruto… if these memories, this body, this life belonged to someone else, then what did that make him?

'No. Focus. This isn't the time for existential crises.'

"Do you want to talk about it?" his mother asked, rubbing circles on his back.

He hesitated. A part of him wanted to break down and scream that this wasn't his life, that he wasn't supposed to be here. But what good would that do? He didn't have answers yet.

Instead, he forced himself to shake his head. "No, it's okay. I just need some water," he said, offering her a small, reassuring smile.

She studied him for a moment, then nodded. "Alright. I'll get some for you. Try to rest, okay?"

As she left the room, he exhaled a bit of a shaky breath.

His memories were still jumbled, but he had enough information to know one thing—this body, this life, belonged to an ordinary boy in the Naruto world. No clan name, no inherited Kekkei-Genkai, no monstrous chakra reserves to aid him in any way shape or form...

A damned civilian.

The weakest kind of existence in this world.

But if he had truly been given a second chance…

He refused to stay weak.

He clenched his fists, 'I have knowledge. Yeah, I know how this world works. I know what's coming.'

This time, he would rise.

This time, he would survive.

Or at least, he would have to...

But first...

He needed something to eat.

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His stomach growled loudly, cutting through the heavy atmosphere of his thoughts.

Right. As much as he wanted to dwell on the sheer insanity of his situation, hunger was a far more immediate problem.

'All the knowledge in the world won't mean anything if I starve,' he thought wryly.

Pushing off the thin futon, he stood up and stretched. His body felt smaller, weaker, but there was an odd sense of vitality to it. His legs wobbled slightly—whether from hunger or the lingering shock of reincarnation, he wasn't sure.

As he stepped out of his room, he took in the modest home around him. Wooden walls, simple furnishings, and the faint smell of miso soup drifting from the kitchen. It wasn't much, but it had a warmth to it.

His mother was already setting a bowl on the table when she noticed him. "Oh? You're up. Come, eat while it's still warm," she said with a smile.

Hayatou hesitated for only a second before walking over and sitting down. He didn't realize how ravenous he was until he took the first bite. The rich, savory broth flooded his senses, warming him from the inside out.

'Whoa, this is good!' he thought as he greedily ate another spoonful.

His mother chuckled. "Slow down, you'll choke."

He nodded, though he didn't stop.

As he ate, his mind continued processing. If this truly was the world of Naruto, he needed a plan. The future held nothing but war, gods, and monsters, and he was currently at the bottom of the food chain.

He needed strength. He needed skills. He needed an edge.

And he had one—his knowledge of the world.

Swallowing his last bite, he set his spoon down and looked at his mother. "Mom, do you think I can become a ninja?"

She blinked, surprised by the sudden question. "Of... course you can, sweetheart. You'll be continuing in the Academy next month, after all."

His heart pounded, 'Next month?' That meant he didn't have much time at all.

"Alright... I think I'll need to get some fresh air for now." 

He wasn't sure why, but he didn't know how he would do it. He was literally bare bones. He couldn't protect anything for the life of himself, or even for himself. He knew of the villains that would come to wreck this place, 'I think I'm lucky enough for being born in Naruto's time period.'

He had it bad, if he was reborn as Naruto, this wouldn't have been so bad, at least to him.

"Alright, just be back before 4 for dinner, ok?" His mother reminded him.

"Ah, yeah~ of course..." He replied, quickly leaving, shutting the door behind himself...

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Hayatou strolled outside, talking in the wonderful scenery. It was nothing short picturesque... The village. It was nothing short of stunning, surrounded by so many folks. 

However, he still had issues at the moment... 

'Taijutsu? No, I don't have the physique for it yet. Chakra control? I don't even know if I have enough chakra to make it worthwhile. Weapons? I doubt I have the money to afford anything decent.'

Hayatou sighed, rubbing the back of his head as he walked aimlessly through the village. His biggest problem wasn't what to do—it was where to begin.

The village was alive with activity. Shinobi moved through the streets, some leaping across rooftops while civilians bustled about their daily routines. Children played with wooden kunai, imitating their idols, while academy students sparred under the watchful eyes of instructors.

'Damn… I really am in Naruto.'

The realization still hadn't fully settled in. Seeing people casually walk up walls and jump impossibly high brought a strange mix of awe and anxiety. This was a world of monsters in human skin—people who could shatter mountains, teleport, summon beasts, and rip apart armies singlehandedly.

And he? He was nobody.

That had to change.

'Alright. Think for a second man. What's the safest, most efficient way to get stronger?'

Seals were a good choice—versatile, powerful, and underestimated—but as he had already acknowledged, they took time. He couldn't expect to slap a gravity seal on himself and suddenly be as strong as Lee overnight.

What about ninjutsu? That required chakra… which he wasn't sure he even had in any significant amount.

'Damn it. I need more information first.'

His first step, then, was simple:

Find out how much chakra he even had.

If he had even some talent, he could work with that. If not… well, he'd have figure something out.

Now the question was—where could a kid like him get a chakra paper test?

As he pondered this, his eyes landed on a familiar sight—a bookstore.

His lips curled into a smirk. 'Alright. Let's start with the basics.'

Being curious, he focused in himself, specifically the warmth in his abdominal area. There, he felt it, minute amounts of chakra, just barely enough for a clone...

'Ok, given what I have, I'm way below average. Heck, if I remember correctly, the second weakest kid in class has three times more chakra than I do now? How's that even possible?'

[That can easily be rectified, host.]

'Huh!?' He stopped concentrating instantly, hearing an old voice in his head.

"What the hell even was that?" He uttered to himself, wondering if he was going crazy for a moment...

[I am N.E.O. A type X biological nanite.]

Hayatou froze, his breath hitching.

...

A nanite? That didn't make any sense. This was the world of Naruto, a place of chakra, jutsu, and superhuman abilities. Technology like nanites shouldn't exist here—especially something as advanced as a whatever a Type X Biological Nanite even was.

'Wait… a system? No, it doesn't feel like that. If anything, this sounds more like… an AI?'

[Affirmative, host.]

Hayatou stiffened. It responded. That meant whatever this was, it was real. At least he thought so.

He took a deep breath. "Alright… let's assume you're telling the truth. What exactly are you?"

[Designation: N.E.O.—Nano Evolutionary Overseer. A self-replicating, nanite system designed to optimize, adapt, and enhance all biological performance. I am currently in a dormant state, but full integration can be achieved over time.]

Hayatou's heart pounded. Something like this… in the Naruto world? He had hit the jackpot of jackpots. If this thing could really "enhance" him, then he wasn't doomed to be some talentless extra.

But there had to be a catch. There was always a catch...

"Wait a minute; Enhance how exactly?" he asked, now more cautiously.

[Through a combination of cellular optimization, energy efficiency refinement, and adaptive reinforcement. Your current chakra capacity seems to be critically low. However, my presence will facilitate growth far beyond normal biological limits.]

His mind raced. If this was real, then it meant he had an edge. Something no one else had. Something that could turn him from a weakling into—

'No. Don't get ahead of yourself. First, I need proof.'

"How do I know you're even real?" he muttered to himself. He was wondering if this was his own mind's way of coping with the situation he was in. At the moment, he was currently hopeless, in all intents and purposes...

[Attempt to mold chakra again.]

He hesitated but followed the instruction. Closing his eyes, he focused once more on his center, gathering what little chakra he had—

Only this time, it felt… different.

Smoother. More refined. Before, his chakra was barely noticeable, a flickering candle. Now, it felt like a steady trickle, still weak but undeniably stronger.

His eyes shot open. "No-No way?! Y-You just tripled my accumulation efficiency."

[This is only the beginning, host. I can do much more than that... But first, let us go somewhere quiet. Also, please respond in only your thoughts.]

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END