The Origin of the Uzumaki Clan

After that horrific battle, the Ninja World entered a long period of chaos, later known as the "Dark Ages."

The terrifying crimson figure is known to the world as the "Red Demon," like a shadow that can never be dispersed by any Kakkō or disc player.

Meanwhile, Otsutsuki Kou has been tracking the whereabouts of the Red Oni alone for many years, slaying the calamities and harmful demons along the way.

He never accepted payment and never called himself a hero.

But over time, his name began to circulate in the Ninja World, and he was revered as the "Demon Slayer."

Because this famous demon slayer never wanted to refer to the indescribable crimson calamity as "Red Demon" or "Monster," he stubbornly called it "Weaving."

The stories circulating among the people gradually became distorted and evolved into a nickname full of misunderstandings.

People called that crimson natural disaster "The Otsutsuki Ori" with both awe and fear.

Over the long years, Kou and Zhi engaged in countless battles.

He gives it his all every time.

However, the overwhelming destructive power displayed by the uneaseless Zhi, driven only by rampaging Chakra, along with her immunity to Genjutsu and all five elemental escape techniques, made it difficult for Kou to subdue her head-on.

He never won once.

He kept chasing, and chasing, until his temples were gray, until that black samurai uniform, though impeccably tailored, was now wrinkled and patched.

As they pursued him, those Mangekyō Sharingan were gradually obscured by a layer of gray, almost causing blindness, during one battle after another.

And Zhi never stopped responding to his appearances.

Whenever he arrived at his destination, the crimson monster would always meet his gaze in the deserted ruins or woodlands.

Meanwhile, the Demon Slayer Corps, whose mission is to atone for the mistakes of their ancestors, has been advancing steadily over the past few decades.

They realized that even if they found Zhi, they wouldn't have the strength to suppress him directly.

So they began to concentrate all their efforts on developing a technique centered on sealing during their pursuit.

After a long period of time, they finally succeeded in their research and took the initiative to approach Kou.

Kou remained silent for a long time before finally nodding.

He made only one condition—to forge him a knife, a knife that could cut through that tough outer layer.

This was the only and last time that the Ninja Sect and Ninjutsu collaborated, utilizing the wisdom of both sides.

The Demon Slayer Corps handed over a branch of the God Tree, which had spread from the heart of the Demon Slayer Corps and was intercepted by the First Ninja Sect Sealing Jutsu master when the Demon Slayer Corps lost control, and then kept alive by soaking it in Natural Energy.

The Ninja Sect has inherited techniques for hundreds of years, as well as its most important material—the Mangekyou Mangekyō Sharingan from Otsutsuki Kou's right eye.

The three were forged into a long-bladed wooden sword over a long winter.

The sword was unsharpened and had a simple, unrefined shape, resembling a child's toy, but its destructive power was undeniable.

The sword is named [Kagutsuchi].

It shares the same name as the Dōjutsu of Kou's Mangekyō Sharingan.

In later generations, this sword acquired an even more widespread name—[Great Ori Cutter]!

With everything prepared, relying on the intelligence network passed down by the Demon Slayer Corps and Kou's years of experience in tracking the path of the Demon Slayer Corps, they finally found the place that the Demon Slayer Corps had subconsciously chosen as its lair.

A deserted island far from any human habitation.

As the ship approached the shore with the night tide, Kou smelled the fragrance.

Osmanthus, a vast grove of Osmanthus Forest, their golden petals swaying gently in the darkness.

The area around the Ninja Sect is filled with trees, the most common of which is the osmanthus.

This was one of the promises that Zhi made to Kou long ago, when she was still at the High Heaven Pavilion.

Once everything has settled down, they will go see the osmanthus flowers of the Ninja Sect together.

Kou stepped onto the sand without making a sound, only his eyes were slightly moist.

Under Kou's arrangement, the Demon Slayer Corps set up all the Sealing Jutsu nodes around the predetermined battlefield.

When everything was ready, Kou walked alone into the depths of the Osmanthus Forest.

The crimson figure swiftly appeared before him, and those eyes, which had been consumed by rage for decades, remained firmly fixed on him the instant they met Kou's gaze.

Zhi had completely lost her human form. Her long, crimson hair, dancing without wind against the backdrop of golden petals, almost trailed to the ground.

The boy who once waited patiently by his bedside with a bowl of medicine, whispering to his dearest friend as he awoke, has now become a red calamity in the eyes of the world, capable of annihilating the elite forces of nations with a single blow.

His mind had long been completely eroded, leaving only his body, which still retained a violent life force, to continue walking in the Ninja World.

Kou stared at his old friend before him, then drew the wooden sword from his waist, the one that had not yet been splattered with blood...

After this battle, the woven fabric was sealed deep underground in the Land of Land of Whirlpools, its immense life force forcibly extracted by the magic and merged into the earth's veins.

After its life force was completely stripped away, Zhi's body turned into a giant rock, forever slumbering in this geological layer formed by the densest roots of the God Tree.

The moment the seal was completed, Zhi's eyes regained their last glimmer of clarity.

He didn't speak, nor could he speak; he simply stared blankly at his dear friend with a full head of white hair, as if trying to decipher a dream that had been too long.

Kou was too weak to leave, nor did he have the will to do so.

After confirming that the seal was completely stable, he simply leaned against the boulder, placed the sword in his hand across his knees, and looked up at Zhi's direction one last time.

He solemnly entrusted the wooden sword to the Demon Slayer Corps, then slowly sat down beside Ori, activating the final Dōjutsu of his left Mangekyō Sharingan— "Eternal World".

With his last bit of strength, Kou conjured up a massive mural on the outer edge of the seal, forever glaring angrily at any intruder, as a final defense before the seal collapsed.

After doing all this, he closed his Mangekyō Sharingan, which had almost completely lost its light.

From that moment on, within the seal they had jointly created, he closed his eyes forever...

Since then, the descendants and followers of the Ninja Sect have remained on this island, taking it upon themselves to protect the seal, and have multiplied for generations.

Over the centuries, the life force released after the woven fabric was sealed has silently seeped into this land and water, and into the bloodline passed down through generations of these guardians.

Over the long years, his hair gradually turned a deep red, his physique became exceptionally strong, and his lifespan far exceeded that of ordinary people.

They are the Uzumaki Clan of later generations.

They repeatedly studied and reinforced the original Sealing Jutsu, fearing that the seal would one day collapse.

Until one day, a century later, that life force emanating from the depths of the earth finally ceased completely.

In that instant, they understood— Otsutsuki Ori had already passed away, resting in eternal peace...

Kou slowly opened his eyes.

Memories spanning hundreds of years still faintly surface in my mind, but the world before me has settled back into a quiet entity after it has dissipated.

The red light from the dome fell upon the secret realm behind the murals, which had been sealed and guarded for hundreds of years, giving it an almost surreal, fairy-tale feel.

Not far in front of him, rows of osmanthus trees stood in this heartland surrounded by mountains.

In the very center of the Osmanthus Forest, a colossal stone statue of a fierce ghost is frozen in the amber of time, poised to strike with all its might.

It was over ten zhang tall, with its giant claws extended, its five fingers still maintaining a ferocious downward grabbing trajectory.

But its offensive was permanently paused, halted just in front of its target.

They stopped in that tiny space, barely big enough for one person to kneel quietly, where the group was gathered in the huge shadow of the stone statue.

Below it, a skeleton knelt silently on the ground.

The black samurai robes had long been corroded away by time, leaving only a few fragments embedded deep in the bones, stubbornly maintaining their original shape.

His head, held high, faced the direction of the stone statue, his empty eye sockets staring back at the statue's glaring eyes at the same level.

He stared at the scene before him, remaining silent for a long time...

(It's finished. Although it's a bit rough, I've roughly written what I wanted to say. I'm a little sorry for being perfunctory, but in order to get to the main storyline as soon as possible, this is the best I can do...)