One Piece: Take the Uchiha Clan to the Grand Line

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The three who had received the breathing techniques were awestruck by their transformative power. It was beyond their comprehension that someone could devise such a method for attaining strength.

They realized that if this technique ever spread, it could reshape the entire world. The World Government's dominance was rooted in the absolute suppression of the weak by the strong. But if everyone's power could be elevated, the gap between the weak and the strong would narrow. This would grant the weak a far greater chance to overthrow the strong—and potentially even dismantle the World Government.

"All right, I'll leave things here to you. Report back if there's anything major."

"Yes, President!"

Since the conclusion of the War of the Best, things hadn't settled down. Pirate attacks continued unabated. Despite Uchiha Kitaro being hailed as the strongest man in the world and earning the title "Heavenly Emperor," some still dared to test him.

With the disbandment of Whitebeard's fleet, opportunists emerged, just like the pirates earlier.

It reminded Kitaro of his past life on Earth. Human traffickers, drug dealers, robbers, murderers—criminals never ceased to exist.

Was it because the government's military wasn't strong enough? No. The truth was that high risks promised high rewards.

During his time in the New World, numerous individuals had fired at him, seeking the 10-billion-beri bounty the World Government had placed on his head and the fame it would bring.

Even the severe punishments of Impel Down couldn't Eliminate the pirates' enthusiasm had for their crimes.

Kitaro dealt with these offenders in various ways—some were killed outright, others sent to mines or tasked with city construction. The immense inheritance he had taken over from Whitebeard would take time to fully integrate.

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Whoosh—

Uchiha Kitaro returned to Amazon Lily. While the New World territories were still being stabilized, the pirates under his jurisdiction had grown accustomed to life on the island.

As he landed, a familiar voice echoed in his mind.

[Ding! Main Mission: Foundation of Power (Completed).]

[Mission Objective: Lead the Uchiha clan to establish the world's strongest security company, spreading their name across the globe.]

[Reward: Eternal Mangekyō Sharingan.]

Kitaro froze for a moment before joy surged through him.

The system, silent for so long, finally spoke again. Over the years, he had grown used to relying on himself and had nearly forgotten about it. Yet, unknowingly, he had fulfilled the mission's requirements.

Completion seemed to hinge on two conditions: achieving recognition as the strongest in the world and ensuring this reputation reached global audiences.

During the War, Whitebeard had passed on the title of the world's strongest man to him. Through live broadcasts and global news, the Uchiha clan's name spread far and wide.

[Would you like to receive your reward?]

Whoosh—

Kitaro teleported to Rusukaina Island, northwest of Amazon Lily. This uninhabited island in the Calm Belt, with its beautiful yet harsh environment, had long been abandoned by human settlements. Now, it served as a training ground for the Uchiha clan.

"Receive!" Kitaro mentally commanded.

A surge of powerful, unique chakra flooded into his eyes. He felt his vision swell with an overwhelming energy.

Swish—

His Mangekyō Sharingan activated. The familiar five-pointed star design now bore an additional ring encircling it, resembling a magical sigil.

Swish—

Kitaro summoned his Susanoo, which rapidly grew in size: 200 meters, 300 meters, 500 meters… and continued to expand until it reached a staggering 1,000 meters before stabilizing.

The sheer magnitude of the Susanoo stunned even Kitaro. From such a height, the entire island seemed to shrink beneath him.

Feeling the immense power coursing through the Susanoo, he was certain a single punch could obliterate the entire island.

"So this is the power of the Eternal Mangekyō Sharingan. Incredible… absolutely incredible!"

Initially, he had thought its benefits were limited to negating blindness and reducing physical strain. But now, he realized it was far more—a qualitative enhancement to his ocular power.

The newfound strength amplified the potency of his techniques, allowing him to manifest a colossal Susanoo of unmatched size.

Testing its might, Kitaro threw a punch toward the island's volcanic peak.

Boom—!

The entire volcano erupted, spewing lava and ash. The molten rock splashed harmlessly against the Susanoo, akin to raindrops against an indestructible fortress.

"Hahahaha!" Kitaro laughed heartily. Few things brought him greater joy than a leap in power. A 1,000-meter-tall Susanoo—who in Uchiha history could rival this feat?

Dispelling the Susanoo, he watched the volcanic eruption. To him, the lava appeared like fireworks, celebrating his acquisition of the Eternal Mangekyō Sharingan.

True power, he reflected, resided within oneself. External forces, like organizations or possessions, were secondary.

From the moment he was born, Kitaro had trained relentlessly, honing his strength. He didn't consider himself a genius—just someone skilled at learning.

Through absorbing and mastering the techniques of others, he had forged his current might.

Whoosh——

Returning to the palace in Amazon Lily, Kitaro was in high spirits. Indulging in his good mood, he sought Boa Hancock for a "deep exchange," leaving the Pirate Empress thoroughly defeated.

Hancock, though unaware of the cause of his elation, was content to see him happy and eagerly reciprocated his affections. The day ended with their fiery passions subsiding, marking the close of an exhilarating triumph.

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