The Konoha Empire, deep within the Divine Palace.
As the final clan head departed with fervent devotion written across his face, the grand selection and investiture ceremony that laid the Empire's foundation finally came to an end.
The vast hall fell silent.
Only Uchiha Tobirama remained, seated alone upon the imperial throne.
He did not close his eyes to rest. Instead, he calmly sensed the surging fortune within his body—the destiny of the entire ninja world, now gathered as one.
At that moment—
A long-lost, cold, mechanical voice echoed in his mind once more.
[Ding! Detection complete: the Host has fully unified with the Ninja World!]
[Current Domination: 100% (Perfect)]
[Side Quest — Ninja World Overlord: Rating unavailable. Highest possible tier achieved.]
[Final rewards being calculated…]
[Congratulations, Host! You have obtained the unique Supreme Achievement Reward: Lord of the Naruto World (Conceptual Authority)!]
"Lord of the World?"
Tobirama's eyes snapped open, a sharp glint flashing through his heterochromatic pupils.
Even he paused when he read the detailed description that followed.
[Lord of the Naruto World (Passive / Active):]
[1. Absolute Invincibility: As long as the Host remains within the Naruto World (including the Pure Land and all derivative dimensions), the Host is absolutely invincible. Any attack, law, rule, or karmic strike is nullified. Even higher-dimensional beings will be suppressed and crushed within this world.]
[2. Words Become Law: With a single thought, the Host may rewrite the world's physical laws. Time reversal, stellar annihilation, or instant extinction of all life are all possible at the Host's discretion.]
[3. Eternal Binding: The Naruto World is bound to the Host's existence. As long as the Host endures, the world cannot be destroyed, depleted, or erased.]
…!
Even Tobirama couldn't help but draw a sharp breath.
This authority was beyond absurd.
As long as he remained within the Naruto World, he was truly invincible.
The system notifications continued.
[Ding! New Module Unlocked: Conquering All Realms System!]
[Reward 1: Random Dimensional Portal ×1]
[Description: Allows the Host to open coordinates to a new world for exploration or conquest.]
[Reward 2: Interdimensional War Authority]
[Description: The Host may initiate war against another world. Upon declaration, a permanent teleportation channel is formed, which can only be closed when one side achieves 90% domination.]
[Special Effect: For every world fully conquered, the Host gains that world's World Ruler buff. Effects stack without limit.]
[Reward 3: All Laws Return to One (Passive)]
[Description: Upon entering any new world, the Host instantly masters that world's power system and adapts all abilities to the most suitable form.]
"Ha… ha… ha…!"
Unrestrained laughter erupted within the silent shrine, echoing against the vaulted ceiling.
Tobirama rose from the throne, feeling a vast, universe-like power fuse seamlessly into his existence.
In that instant, he was no longer merely a ninja.
He was the storm itself.
His perception spread across the entire ninja world—down to the smallest ant burrowing beneath the soil.
True invincibility.
"With this authority… what do I have to fear?"
A fierce ambition ignited in Tobirama's eyes.
If he encountered an enemy in another world that he couldn't defeat?
Simple.
Open a portal and drag them into the Naruto World.
Once inside his domain, saint or god, dragon or king—it all meant the same thing.
"Fusion."
With a single thought—
Buzz.
An invisible wave swept across the planet.
Gravity, time, space, chakra—every fundamental law of the ninja world merged into Tobirama's body.
He raised his hand and studied his palm.
If he wished, he could make the moon angular or turn the oceans sweet in an instant.
"This feeling…"
"…is intoxicating."
He clenched his fist, absolute confidence radiating from his posture.
Just as Tobirama was savoring his new authority—
Knock. Knock. Knock.
A cautious tapping came from outside the hall.
"Enter."
He settled back onto the throne, his expression returning to a relaxed, imperial calm.
The doors opened.
Barefoot and clad in a flowing white palace gown, Ōtsutsuki Kaguya stepped inside, her presence elegant yet subdued.
After months of guidance and restraint, the former progenitor of chakra had lost her initial ferocity, replaced by a quiet, feminine grace.
Yet now, unease and anxiety filled her expression.
"Master…"
She knelt at the foot of the throne, lowering her head, clearly hesitant.
"What is it?" Tobirama asked casually, clearly in good spirits.
"If someone in the palace is troubling you, say the word. I'll deal with it—though aside from Tsunade, I doubt anyone would dare."
"No… it's not that."
Kaguya shook her head, lifting her pale eyes, fear flickering within them.
"Master… there is something I must report."
"Speak."
She hesitated, then pointed faintly upward.
"It concerns… the heavens."
Her voice trembled.
"I am not native to this planet. I come from the Ōtsutsuki clan, a family that roams the cosmos."
"I once betrayed them and took the Divine Tree's fruit for myself. That granted me power—but also marked me as a traitor."
Her body shook as she continued.
"They will come. To reclaim the chakra."
"Momoshiki, Kinshiki, Urashiki… they are true monsters."
"They devour worlds. Their power surpasses even what I once possessed."
"Master… this world is still too fragile to face them. We must prepare. We must build armies."
She looked as though catastrophe were inevitable.
Tobirama laughed.
Calmly. Casually.
"Oh? That's all?"
He leaned back, resting his chin on one hand, eyes filled with amusement.
"The Ōtsutsuki clan."
"Those cosmic parasites who plant trees and rely on pills to survive?"
Kaguya froze.
"Master… you're not afraid? They can destroy stars!"
"Afraid?"
Tobirama stepped down from the throne and stopped before her.
He lifted her chin gently, forcing her to meet his gaze.
"Kaguya, your vision is too narrow."
"When you've stared into a well for too long, you start believing that's the entire sky."
A trace of aura leaked from him.
Just a trace—
Boom.
In Kaguya's perception, the world collapsed.
She saw something vast beyond comprehension—an existence colder and more overwhelming than the universe itself.
Her mind shattered, and she collapsed to the floor.
"Ōtsutsuki clan?"
The pressure vanished as Tobirama scoffed.
"I'd be disappointed if they didn't come."
"If they dare to set foot here…"
He smiled faintly.
"This is my world."
"Even if their so-called god descends in person—"
"I'll still make him kneel."
"Do you understand?"
Kaguya stared at him in a daze.
Logic told her the Ōtsutsuki were terrifying.
But looking into Tobirama's unwavering eyes, she believed him completely.
That lingering fear she had carried for a thousand years finally faded.
"Yes… Master."
She lowered her head and leaned quietly against his legs.
"As long as you are here…"
"…I have nothing to fear."