Uchiha Gate: From Konoha to One Piece

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"Understood!"

Hearing those words, Hatake Sakumo's heart trembled. He immediately responded.

At that moment, he felt a surge of emotions.

"So, this is Lord Kaito's true goal and vision?"

"How incredible! I will absolutely help you achieve this goal!"

Sakumo silently swore this in his heart.

Now, he finally understood the purpose behind Kaito's earlier reforms.

It was far grander and more noble than he had ever imagined.

As he pondered the memories Kaito had shared about the recognition of the world, they included glimpses of his own family's past and future.

"Compared to the Third Hokage, he's worlds better!"

"So in the original future, I was supposed to die in a few years, forced to end my life because my success intimidated my superiors? All because I didn't understand politics and refused to compromise?"

"And Keiko... She originally died in childbirth?"

"And Kakashi's future was destined to be filled with so much hardship?"

"The Third Hokage and Danzo... You two are truly despicable!"

"To think you went so far to protect your own interests, constantly oppressing your own people! No wonder you ended up the way you did!"

Sakumo's heart burned with rage as these thoughts swirled.

If the Third Hokage and Danzo hadn't already faced their deserved punishment, Sakumo would have beaten them senseless—or even killed them outright.

"Wait... Killing the Third Hokage isn't an option, but beating him up? That's doable. And as for Danzo, killing him works perfectly fine!"

"Yeah... But I'd have to do it without getting caught. A sneak attack in a dark alley—maybe with a sack over the head!"

For the first time, Sakumo found himself thinking sinister thoughts, a testament to how deeply the revelations about the original timeline had impacted him.

— — —

"Alright! Let's continue exchanging swordsmanship techniques!"

"Just have a Shadow Clone teach each other. That should do it," Kaito suggested casually.

"Got it!"

Sakumo had no objections. He immediately summoned a Shadow Clone to teach Kaito the Hatake Swordsmanship and Wind-Lightning Ninja Blade techniques. Meanwhile, he began learning from Kaito's Shadow Clone.

[You received training in Hatake Swordsmanship from Hatake Sakumo. You learned Hatake Swordsmanship. Proficiency +5.]

[You received training in Ninja Blade techniques from Hatake Sakumo. You learned Wind-Lightning Ninja Blade techniques. Proficiency +7.]

With Kaito's current mastery of swordsmanship, his innate talent, and deep understanding, it only took a single lesson from Sakumo's Shadow Clone for him to grasp the basics.

Over the next few hours, as the training progressed, his mastery of Hatake Swordsmanship and Ninja Blade techniques advanced rapidly.

Thanks to the foundation of Pirate World's swordsmanship—where Kaito had already achieved mastery—he quickly reached a minor proficiency level in Hatake Swordsmanship within hours.

His ability to adapt and extrapolate concepts was nothing short of extraordinary.

Moreover, as his proficiency grew, Kaito began adjusting Hatake Swordsmanship to better suit his physical condition, perfecting and refining it for himself.

He even started consciously integrating it into his own Swordsmanship style, further enriching its foundation.

In the future, Kaito planned to collect various swordsmanship styles from across the world, extract their essence, and incorporate them into his own system to fuel his next breakthrough.

When it came to the Ninja Blade techniques, they turned out to be even simpler for Kaito.

For someone like him, who had mastered chakra manipulation and swordsmanship to the highest level, these techniques—at their core—were just about infusing chakra into blade strikes.

It took only a few hours for him to achieve advanced mastery in these techniques.

Kaito estimated that with a few more days of practice, he'd be able to reach perfection with the Wind-Lightning Ninja Blade techniques.

After that, he planned to develop Ninja Blade techniques for other chakra natures as well, designing moves that utilized each nature's unique characteristics.

He even envisioned merging different chakra natures into cohesive techniques, creating styles similar to Sakumo's current Wind-Lightning Fusion Ninja Blade techniques.

Such techniques would be far more powerful than those relying on a single chakra nature.

Wind-Lightning Ninja Blade techniques, in particular, embodied extreme speed and devastating attack power, which was why Sakumo's combat ability was so fearsome.

He was fast. His blade was sharp.

At this moment, Sakumo was like a peerless weapon—sharp, unstoppable, and embodying the spirit of relentless advance.

But such a weapon, if dulled or broken, would surely shatter entirely.

Sakumo's Shadow Clone—and even his real self—noticed Kaito's terrifying progress in mastering the Hatake Swordsmanship and Wind-Lightning Ninja Blade techniques.

Initially, he was shocked and stunned.

By the end, he was utterly numb.

"This... This man isn't human! Definitely not human!"

"Is this the kind of learning ability a human can have?"

While Hatake Sakumo complained inwardly, he couldn't help but feel even greater admiration for Kaito.

Only someone as extraordinary as this could achieve so many things that ordinary people simply couldn't.

In that moment, Sakumo's enthusiasm burned even brighter.

In truth, Sakumo's talent in swordsmanship was already exceptional.

Within just a few hours, he had successfully grasped the basics of the Pirate World's swordsmanship, which Kaito had taught him. He had already stepped through the doorway.

Furthermore, he leveraged his previous foundation in swordsmanship to rapidly deepen his understanding of the Pirate World's techniques.

He connected the dots effortlessly—it was second nature to him.

Though he couldn't compare to Kaito, he was already far ahead of Minato and the others.

"Alright! You've already grasped the basics. From now on, I won't guide you further—it's unnecessary at this point!"

"You can continue refining and developing your skills on your own!"

"Too much instruction might actually become a hindrance or even mislead a top-tier swordsman like you."

"However, if you want further training, you can visit Isshin Dojo in the Shimotsuki Village of the Pirate World whenever you have time. You can learn from or spar with the swordsmanship master there, Shimotsuki Koshiro."

"I've already mentioned you to him. Just give him your name and tell him I sent you."

"He's a great swordsman! Not just any great swordsman, either—he's already among the top-tier even within that category!"

"For quite a long time into the future, he will undoubtedly be one of your most invaluable mentors and friends."

"Oh, by the way, the Isshin-style swordsmanship manual I passed on to you earlier comes from Master Koshiro's family lineage. If you have any questions, feel free to ask him about it!"

Feeling that the timing was right, Kaito stopped the session, dispelled his shadow clones, and walked over to Sakumo's real body to give some final advice.

"Understood! I'll make time as soon as possible to visit and pay my respects to Master Koshiro!"

Hatake Sakumo's face lit up with joy as he bowed to Kaito, full of gratitude.

Knowing from the information Kaito had shared just how terrifyingly powerful great swordsmen were in the Pirate World, he couldn't help but feel elated.

Someone like Koshiro, a top-tier great swordsman, was already considered an elite in the Pirate World.

It had been over three years since Kaito signed the contract with Koshiro, and the man's strength had only grown significantly since then.

Not to mention the immense boost Koshiro received from refining his chakra through the Primal Chakra Refinement Technique.

On top of that, the Life Force technique, and Crystal meditation had all improved his body's foundation, bloodline, spiritual energy, and even his soul. His potential had skyrocketed. These enhancements had propelled his physique, Haki, and swordsmanship to unprecedented heights.

With these advantages, Koshiro was confident in eventually standing at the very pinnacle of the Pirate World.

"Alright," Kaito nodded before adding warmly, "Also, I've set up several training bases in the Pirate World over there."

"Most of them are located on uninhabited islands full of fierce beasts or on sky islands with thin air."

"If you're interested, you can visit those training bases to hone your skills!"

"Additionally, when you feel ready, you can head out to sea to hunt down the pirates of that world, challenge swordsmen and great swordsmen from different dojos, or even slay Sea Kings. Any of these would greatly benefit your growth!"

"For the next few years, I suggest focusing primarily on the Life Force technique and other body-strengthening methods."

"Eat and digest large amounts of Sea King meat and fierce beast meat daily to strengthen your fragile body and improve your vitality."

"Once your foundation is solid, you can then complement this with meditation and swordsmanship training."

"This will yield the best results!"

"Oh, and make sure to switch to the Prime Chakra Refinement Technique as soon as possible. I'm sure you already understand why, so I won't elaborate."

"That's all!"

"I look forward to the day you become the greatest swordsman across both worlds."

With those parting words, Kaito teleported away, returning straight home.

— — —

"You're back? Perfect timing—come help set the table for dinner!"

As soon as he arrived home, he saw his mother and Mikoto setting the table. Uchiha Naori waved at him.

"Alright!"

Kaito smiled warmly, washed his hands, and started helping with the dishes.

As their physiques grew stronger, their appetites naturally increased as well. Each meal required more and more food to prepare.

Their diet was already centered around Sea King and fierce beast meat, or they'd need even more food otherwise.

It was no wonder the people in the Shinobi World generally had weaker physiques than those in the Pirate World.

The environmental conditions simply didn't allow for it. The world was different.

Without sufficient high-nutrition food or supplements, trying to improve one's physique might just lead to starvation.

"Time to eat!"

Soon, all the dishes were served on the now-expanded dining table, and Uchiha Naori called everyone to eat.

While they ate, Uchiha Naori asked curiously, "Where were you this afternoon? I saw your shadow clones everywhere but couldn't find the real you."

"Ah..."

Kaito swallowed a bite of meat and replied, "Remember how I agreed to exchange swordsmanship with Sakumo a few days ago?"

"Today was the day we finally met to make the trade!"

"Plus, since his goodwill meter maxed out, I also signed the contract with him!"

"Sakumo's one of us now!"

"Tomorrow, he'll likely head to Isshin Dojo in the Pirate World to train with Master Koshiro!"

"Minato, you should help introduce him when the time comes."

"And by the way, you guys should take some time to learn from Sakumo's Hatake Swordsmanship and Wind-Lightning Blade Techniques."

"Especially the Blade Techniques—you've all been waiting to learn them for a while, haven't you?"

These techniques, which perfectly combined ninjutsu and swordsmanship, were incredibly important and practical for Minato, Mikoto, and the others, who were all working hard to master swordsmanship.

"Oh? You've already signed the contract with Sakumo-senpai?"

Minato's eyes lit up, and he nodded eagerly. "No problem! I'll make sure to take good care of him!"

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