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Naruto: Uzumaki Legacy

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Synopsis
_Warning_ This story will not feature OP MCs or generic dojutsus like the Sharingan. Starting in the world of Naruto, he awakened with Uzumaki blood in his veins, following the pure path of an Uzumaki and taking the bloodline to unknown levels. In Demon Slayer, he fused his Uzumaki blood with the Breath of the Mist, creating his own style—Blood Breathing. In Jujutsu Kaisen, he awakened his own cursed technique, "Purity," shocking the entire world of sorcery. He defeated curses like toys in Jujutsu Kaisen, annihilated the Hollows in Bleach, survived intergalactic threats in Dragon Ball, and faced all manner of monsters and heroes. ____________ Exploring all worlds without traps or systems, with the purity of his talent and blood, our MC overcame all difficulties. From unknown anime and realities and famous manga, to worlds of sports and mystery—He Will Eventually Come. This is the story of an ordinary boy, who, thanks to the power of destiny, embarked on an endless journey between dimensions and realities, with difficulties and enemies ahead, but... he never forgot his bloodline and origin, the Uzumaki...
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Chapter 1 - Chapter 1: The Awakening of the Whirlpool

The first sound he heard was the constant murmur of the waves crashing against the cliffs. The salty smell of the sea mixed with the fresh breeze flowing through the window. Slowly, his consciousness emerged from the thick fog where it had been trapped.

"Where… am I?" he whispered, barely able to hear his own voice.

He opened his eyes, and the first thing he noticed was that he wasn't in his usual room, the one he had in his former world. In front of him was a rustic wooden ceiling, carved with spiral symbols. As he sat up, he felt a small, fragile body—different from before. He raised his hands to his face and realized they weren't the hands of a fifteen-year-old teenager, which he had been in his past life, but those of a boy, no older than eight.

He rushed to a polished bronze mirror resting on a small piece of furniture. What he saw took his breath away. Short, fiery red hair framed a youthful face with well-defined features. But the most striking thing was his eyes: yellow, intense, almost feline in their glow.

It didn't take long for him to understand: he had transmigrated. And not just anywhere. The spiral symbols, the salty sea breeze, the style of the buildings visible through the window… it all confirmed it. He was in the Hidden Village of the Whirlpool, the ancestral home of the Uzumaki clan.

His heart pounded wildly. He knew the story: within a few years, this village would be destroyed, crushed by an alliance of nations fearful of the Uzumaki's power. He was in the right place… at the wrong time.

"No way… I'm in Naruto," he murmured, half in awe, half in fear.

"But... where's the system's usual 'Ding'?" he wondered; his heart raced, thinking that, in a world of such difficulties, it had no traps or anything like that.

"I don't have... a trap..." he came to this conclusion, his heart skipping a beat, though he thought: I should try it, maybe I have another special ability.

A knock at the door pulled him out of his thoughts. A young woman with hair as red as his entered with a warm smile. Her eyes were the same shade as most Uzumaki, a deep green filled with vitality.

"I see you're finally awake, Kaito," she said tenderly.

Kaito. That was his new name. The memories of his new body slowly began to intertwine with those of his past life, threads weaving into a single destiny. He now knew that his parents had died years ago, victims of a failed mission. Since then, the village had taken care of him.

"Yes… I'm fine," he replied, a little unsure.

The woman chuckled softly and ruffled his hair."Don't pretend. I know you trained until you passed out yesterday. You push yourself too hard."

Kaito lowered his gaze, trying to sort through his thoughts. It all made sense now: this body had already been training diligently. And, to his surprise, when he moved the chakra inside him, he felt it flow like a massive, roaring river.

The sheer amount shocked him. It was far beyond what any child his age should possess, and even compared to the Uzumaki, renowned for their vast chakra reserves, his was extraordinary. His energy felt vibrant, pure, and endless, as if every cell in his body overflowed with vitality.

So this was the blessing of his Uzumaki bloodline—amplified, pure, unshakable.

But there were no chakra chains, not yet. Only the promise of power waiting to awaken.

That day, after eating, he went out to explore the village. The scenery was breathtaking: sturdy wooden houses with spiral symbols painted on the doors, banners waving with the clan's emblem, children running and laughing through cobblestone streets. Beyond that, the village's defensive walls stood tall, like guardians against the endless sea.

The Uzumaki were a proud, strong, and cheerful people. Their fame as masters of fūinjutsu—sealing techniques—was known throughout the shinobi world. And Kaito, with his knowledge from the anime and manga, knew how lucky he was to walk among them… though the shadow of their inevitable fate haunted him.

Near the training grounds, a group of children called out to him."Kaito!" shouted a freckled boy with a mischievous grin. "Are you coming to practice with us?"

Kaito nodded. He couldn't reveal his true origin, but he could take advantage of every moment to grow stronger. If he was going to survive the destruction to come, he would need all the power he could muster.

Training began with basic taijutsu exercises.

Though his body was small, his coordination was remarkable. Movements he had only known in theory or from video games now flowed naturally, as if his new body guided him instinctively.

When it was his turn to practice ninjutsu, he closed his eyes and focused. He formed a hand seal and tried to mold chakra.

Immediately, the ground around him seemed to tremble faintly. A visible shimmer of raw energy gathered around his body, like heat rising off sun-scorched stone.

The other children stared wide-eyed."His chakra is leaking out… there's so much of it!" one of them gasped.

He quickly dispersed it, embarrassed. But inside, he was stunned. The sheer density of his chakra was beyond anything he had seen in the series. It wasn't refined yet, not shaped into advanced techniques, but its potential was terrifying.

"This is… unbelievable," he thought. "With this much chakra, with this vitality… I might really have the power to change the future."

By evening, he returned home and lay on his futon, staring at the wooden ceiling. His mind was racing with ideas and memories.

He knew Naruto's story: he knew the heroes, the wars, the enemies. He also knew the village would be destroyed, its people massacred or scattered. But now that he was here, he had the chance to alter that fate.

"I have time," he told himself. "Years, maybe. Enough to grow strong, to learn the art of sealing and prepare. I won't let it all happen again."

His yellow eyes gleamed with fierce determination.

He was no longer just a spectator. He was an Uzumaki.And this time, he would write the future with his own hands.

That night, he dreamed of infinite spirals, spinning in an ocean of chakra. Ancient voices, whispers of generations past, spoke into his ear.

"You are our heir. Our bond with tomorrow. Protect the clan. Protect the whirlpool."

Kaito woke up sweating, his heart racing. He stood and gazed at the horizon, where the sun rose over the sea, painting the sky red and gold.

He knew the path ahead wouldn't be easy.He knew danger was closer than anyone suspected. But he also knew that with each passing day, he was closer to becoming the hope his clan needed.

And with that promise engraved in his soul, his new life in the shinobi world began.