Konoha: Uchiha's Two-Way Travel in One Piece

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"No wonder during the Fourth Great Ninja War, Kaguya could so easily absorb the chakra of countless ninja!"

"No wonder the Sage of Six Paths was able to control the Pure Land and command the souls of deceased shinobi!"

"All of this has a reason, a root cause!"

Uchiha Jiri sighed deeply, her expression full of realization.

Thankfully, I have such an exceptional son, or else...

"So, are you saying you're ready to teach us this Primal Essence Chakra Refining Technique?" Jiri asked directly, looking at Kaito.

"Yes," Kaito nodded confidently. "However, for now, it's not suitable to spread this new technique throughout the Uchiha clan—it might alert the Sage of Six Paths."

"But since you and the others are bonded to me, you don't need to worry about being detected. I hope you can change to this new method as soon as possible."

"Not just you two," Kaito added, "tomorrow, I'll teach it to Kushina and Minato as well."

Jiri nodded in agreement. "Your caution is necessary. If this Sage left behind a backdoor within the chakra seeds, it's very likely he would notice if we completely refine them."

"But are you certain it's safe for us to practice this technique?" Jiri asked, her voice laced with concern.

Mikoto chimed in support. "I agree with Aunt Jiri. There's no need to rush if there's even a slight chance of danger. We can always wait until Kaito is strong enough to confront the Sage of Six Paths before we begin."

Kaito smiled at their concern but waved his hand dismissively. "Relax! If I say it's safe, then it's safe!"

"Do you underestimate my ability to travel between worlds? The Space-Time Gate?" he added with a grin. "Even the Sage of Six Paths will never possess such a skill."

"With time, my growth will far surpass anything he could dream to achieve."

"I even have the confidence to elevate all of you to heights he can't begin to imagine!"

"So, trust me and focus on mastering this technique. It'll significantly increase both the quantity and quality of your chakra. It will also make refining and controlling chakra far more efficient."

"Especially for you, Mom," Kaito said, turning to Jiri. "You've already surpassed Kage level, with chakra quality rivaling that of an elite Kage. If you successfully transition to this technique, you might even be able to open the Central Dantian and other energy nodes."

"Once that happens, your chakra will continuously improve in both quality and quantity, accelerating your progress toward surpassing Kage level entirely."

"Moreover, during this process, you can use high-quality chakra to refine your body and even purify your bloodline."

"I've always believed that the reason ordinary Uchiha struggle to awaken the Mangekyō Sharingan—or even the Eternal Mangekyō—is because their bloodline lacks purity and completeness."

"If this technique can purify and perfect our bloodline, it might make awakening the Eternal Mangekyō possible through sheer effort alone."

Jiri's eyes lit up as she nodded in agreement. "I think you're absolutely right. If Indra and the Sage of Six Paths could achieve the Eternal Mangekyō without external help, then there must be a method."

"And perhaps the key lies in the purification and perfection of the bloodline!"

"Alright, let's not waste time. Show me this Primal Chakra Refinement Technique! I can't wait to see its wonders."

Opening the Dantian and energy nodes to enhance chakra quantity and quality had always seemed impossible.

But if this technique could achieve such results, even those with limited innate chakra reserves could steadily grow stronger.

"Alright! Let's get started!" Kaito began explaining the Essence Chakra Refinement Technique in detail.

While he spoke, both Jiri and Mikoto instinctively activated their sensory abilities, carefully monitoring their surroundings.

Minutes later, Kaito finished his explanation and guided them through the initial steps of transitioning to the new technique.

The process went surprisingly smoothly.

Mikoto, who had less chakra, completed the transition quickly and refined the chakra seed within her.

She immediately felt a significant improvement in her chakra control and efficiency, with her mastery reaching new heights.

Jiri, having a far greater chakra reserve, took longer due to the additional step of opening the Central Dantian and other nodes.

After refining the chakra seed, she began attempting to open her Central Dantian.

"Boom!!!"

A terrifying wave of chakra burst forth from Jiri, so overwhelming that Kaito and Mikoto had to retreat to avoid being crushed by its intensity.

"Good thing we activated a barrier," Kaito muttered as he glanced out the window. "Otherwise, we'd have drawn a lot of attention."

"Yeah," Mikoto nodded, her gaze fixed on Jiri. "Aunt Jiri's chakra feels so strong now! It's almost like it's becoming tangible. This is incredible!"

"So this is what being at Kage level truly means?"

"No," Kaito corrected, shaking his head. "Even an ordinary Kage-level ninja, or one who's transitioned to the Primal Chakra Refinement Technique, couldn't reach this level."

"This is because my mom's innate strength and chakra quality were already so exceptional. Transitioning to the new technique and opening her Central Dantian further amplified those traits."

"Ordinarily, only someone at the quasi-Six Paths level would surpass this."

"This is the level of chakra quality that legends like the First Hokage and Madara Uchiha had."

"So, does that mean Aunt Jiri is close to reaching beyond Kage level?" Mikoto asked, her eyes sparkling with excitement.

"Probably," Kaito said, nodding thoughtfully. "But only Mom can confirm her exact progress."

Another hour passed before Jiri's aura stabilized completely.

She slowly opened her eyes and exhaled deeply. "Whew..."

"Mom! Aunt Jiri! How do you feel?" Kaito and Mikoto rushed over, their curiosity and concern evident.

"Better than ever!" Jiri laughed, standing and patting their heads affectionately. "I can feel the barrier to Super-Kage level within my reach now. Maybe, in a year or two, I'll break through!"

Her chakra reserves had grown significantly, and its quality had doubled. Now, the same amount of chakra could produce much more powerful jutsu—or the same effects with far less chakra usage.

Moreover, she had unlocked over ten chakra nodes alongside the Middle Dantian.

"Kaito," Jiri said thoughtfully, "After unlocking these nodes, I can indeed use my chakra reserves to temper my body and even purify my bloodline. The results are subtle but real."

"Great!" Kaito said, eyes lighting up. "That's fantastic news! But don't burn too much chakra on this. For body refinement, you can use physical training, specialized tonics, and Sea King meat instead."

"As for bloodline purification, you can also rely on Longevity Technique (Life Essence Technique). It's extremely effective once you master it."

The conversation ended late into the night, and everyone went to bed except for Jiri, who stayed up, marveling at her progress.

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The next morning, Kaito introduced the technique to Kushina and Minato, who were shocked and impressed by the method's transformative potential.

"This could revolutionize how we cultivate chakra," Minato murmured in awe.

"I still find it hard to believe."

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