Naruto: Reborn With An AI Chip

When the Third Hokage saw Renjiro so confidently and openly admit to creating the technique, his curiosity deepened.

"He speaks with politeness." Hiruzen thought to himself: "But there's a quiet confidence in his eyes. He's not arrogant—just assured of the technique he's created."

"Oh?" Hiruzen said with a warm smile: "Then does this old man have the honor of witnessing the body flicker technique you've created?"

Renjiro blinked, briefly caught off guard—then his eyes lit up with joy: "Honor? It's not your honor, old man—it's mine!"

This was Sarutobi Hiruzen—the Third Hokage of the Hidden Leaf Village! A legendary shinobi known as The Professor, the man who had trained the Three Sannin and earned the respect of the entire shinobi world.

A single comment or suggestion from someone of his caliber could be invaluable to Renjiro—whether in theory or in practice.

Especially in matters like chakra nature transformation, where Hiruzen's mastery was unmatched; he was one of the few shinobi proficient in all five elemental chakra natures.

"It will be my honor, Hokage-sama." Renjiro quickly replied, with a hint of excitement in his eyes.

"Let's go. Come with me." Hiruzen said with a satisfied smile. He was genuinely curious—eager, even—to see what kind of Taijutsu movement technique Renjiro had developed.

---

In truth, the reason Hiruzen even knew about Soru was because of classified reports he had received detailing Renjiro's exceptional performance on the battlefield.

And it wasn't just Renjiro—whenever a young shinobi distinguished themselves in combat, whether it was someone like Shisui or Kakashi, Hiruzen made sure to receive those reports personally.

Even before Orochimaru's squad had returned to the village, Hiruzen had already been handed a list of the most outstanding young shinobi from the front lines.

He paid particular attention to those of civilian origin, believing that talent unbound by bloodline or clan deserved to be nurtured more carefully—precisely because such individuals often lacked deep personal ties, aside from their bond with the village itself.

To him, it was not only a matter of fairness—it was his responsibility as Hokage to identify and cultivate such potential. These individuals could one day become the pillars of Konoha's future.

---

Without wasting time, Hiruzen led Renjiro up to the rooftop of the Hokage Residence, accompanied by an Anbu. There, the open space provided ample room to demonstrate Renjiro's new technique.

"You may begin." Hiruzen said, taking a few steps back alongside the Anbu to give Renjiro space.

Renjiro gave a silent nod. Just then, a sparrow fluttered down and landed lightly on the rooftop railing. His eyes flicked toward it, and a thought crossed his mind: "That'll do. A perfect target to showcase Soru."

Soru!

Whoosh!

In the blink of an eye, Renjiro vanished from their sight.

"What an incredibly fast movement Taijutsu…" Hiruzen murmured, his eyes narrowed with focus. A flicker of surprise and awe crossed his face.

"Be careful, Hokage-sama!"

Behind him, the Anbu instinctively dropped into a defensive stance, as his hands drifted toward his weapons.

But Hiruzen raised a hand to stop him and said in a calm, steady voice: "Stand down. He's only demonstrating."

He kept his gaze forward, watching intently as he analyzed the movement with sharp eyes.

Whoosh!

A moment later, Renjiro reappeared right in front of them, calm and composed—cupping a stunned sparrow gently in both hands.

Chrrr!

The little bird blinked rapidly, utterly confused—unable to grasp how it had gone from sitting on a rooftop railing to resting in human hands.

"Hahaha…" The Third Hokage let out a low, amused chuckle. With practiced ease, he removed the pipe from his mouth after taking a long drag, exhaling a thin stream of smoke into the cool morning air.

"To appear beside a sparrow in an instant… capture it before it even senses danger… and return just as quickly." He nodded, then continued in an impressed tone: "A remarkable Taijutsu technique, indeed."

Chrrr! Chrrr!

As if on cue, the sparrow finally snapped out of its daze. Its wings fluttered in a burst of frantic panic, and the moment Renjiro opened his palms, the bird took off—bolting into the sky with a series of terrified chirps.

"Scary giant! That was almost the end of this handsome bird's freedom!" It seemed to cry in its own frantic little mind, vanishing into the blue with the urgency of a prisoner escaping execution.

However, none of the three paid the bird any mind.

Still smiling, Hiruzen spoke at a calm, measured pace: "This is indeed an ingenious technique. At its core, it follows the same principle as most Taijutsu-based flicker techniques—utilizing a burst of physical power, amplified by chakra, to achieve high-speed movement."

He paused, puffing lightly on his pipe before continuing: "But the brilliance of your version lies in the repetitive charging—more than ten rapid stomps in an instant to build momentum. That layered acceleration greatly reduces chakra consumption while significantly enhancing speed and control."

His expression grew slightly more serious as he added: "However, the primary drawback is clear—it relies heavily on physical strength rather than chakra. If someone with an untrained or weaker body attempts it, the consequences could be severe. At best, they'd suffer extreme muscular damage; at worst, the ligaments in both legs could rupture—or the muscle fibers might tear completely."

"Soru requires a strong body." Renjiro said in a serious voice.

"Soru… is that the name of this technique?" Hiruzen asked with curiosity.

"Yes, Hokage-sama. Anyone who wants to train in it needs a solid Taijutsu foundation."

He paused briefly before adding: "Even now, I can barely use it twice. After that, I need at least an hour of rest before I can recover enough to use it again—given my current level of physical strength."

Hiruzen nodded thoughtfully: "Twice, huh? I see."

Renjiro wasn't surprised that the Third Hokage had grasped the core mechanics of his technique almost immediately.

Not only was Sarutobi Hiruzen renowned for his deep understanding of all forms of jutsu—including Taijutsu—but Konoha already possessed a basic movement-based Taijutsu technique often taught to Chūnin-level shinobi and classified as D-Rank.

Its concept was simple: infuse chakra into the legs and use a burst of physical force to propel oneself at high speed. While elementary, it served as the foundation for more advanced movement techniques—like the blinding flickers used in Body Flicker or the raw, sustained speed utilized by shinobi such as Rock Lee.

Of course, Lee's true speed came from the Eight Gates—a forbidden technique far beyond D-Rank. It was powerful but incredibly dangerous, usable only by those with extreme physical conditioning.

But Renjiro's version was different. He had adapted Soru from the One Piece world.

While he didn't possess the explosive strength of an elite Chūnin, he compensated with rapid, repeated stomping to build momentum. With chakra enhancements layered on top, the result was clean, precise, and blisteringly fast movement.

However, the technique placed immense strain on his body. The pressure on his muscles and joints was constant—far too great for casual or repeated use without significant consequences.

What truly impressed the Third, however, wasn't just the execution of the technique—but the concept of multi-stage charging itself.

In the shinobi world, most movement techniques followed a familiar formula: a single burst of chakra-infused power to propel the user forward.

But Renjiro had taken that basic principle and evolved it—transforming one explosive burst into multiple layered accelerations.

It was a deceptively simple adjustment, yet one that carried profound implications for both speed and control.

By turning it into a series of charges, the difficulty dropped, making the technique usable even by lower-level shinobi. At the same time, it increased the speed and control for higher-level users.

That was the brilliance of Soru—a technique Arkain had developed.

If an average Chūnin could manage to use it, Soru became a powerful tool—but only if their body was strong enough to endure the strain.

But in the hands of a Jonin, with far greater physical ability, the resulting burst of movement could be nothing short of terrifying.

The genius of the technique didn't lie in complexity—it lay in simplicity.

And that was what impressed Hiruzen most: "Such a simple principle… yet no one in the shinobi world ever thought to apply it this way."

"He's certainly gifted in Taijutsu… but if he possesses the same potential in Ninjutsu or Genjutsu, that would be truly remarkable." Hiruzen thought, his heart filling with quiet anticipation.

The reason no one had considered Soru's underlying principles wasn't due to a lack of intelligence among shinobi. Rather, it stemmed from the shinobi world's overwhelming reliance on chakra-based techniques.

Taijutsu was often neglected—seen as secondary or supplementary. After all, powerful shinobi already had access to advanced variants of the Body Flicker Technique, which achieved similar effects without the need to deeply refine or optimize physical movement.

So, no one bothered to explore them, but Renjiro had.

He had taken a basic physical concept and maximized its value—creating a technique not only accessible to low-level shinobi, but also offering high-level shinobi an efficient, chakra-saving alternative.

Casting one less high-level jutsu meant conserving chakra—and in a real battle, that could be the difference between life and death.

The more Hiruzen thought about it, the more he admired the technique's practicality. It was elegant, adaptable, and full of potential.

He looked at Renjiro with newfound appreciation: "This boy didn't just dare to imagine—he executed. He took what others might call fantasy… and turned it into reality."

"Out of curiosity…" Hiruzen said in a calm but inquisitive voice: "How exactly did you come up with this technique?"

Renjiro was fully prepared for this question.

Arkain had already crafted a comprehensive backstory for him—a step-by-step rationale that would hold up under scrutiny.

And so, Renjiro delivered the explanation word for word.

He spoke of observing natural movement patterns, of trial and error, of accidental breakthroughs. He told the story exactly as Arkain had designed it—logical, consistent, and believable.

The Third Hokage listened carefully and nodded with satisfaction: "Excellent."

Because ultimately, Soru's brilliance didn't come from chakra complexity or forbidden secrets. It came from refining a concept that had been hiding in plain sight all along.

Renjiro had taken a known body flicker formula and pushed it a step further—layering it with his own unique insight.

He turned a basic idea into a powerful, versatile Taijutsu technique.

As long as Renjiro could justify how he arrived at the idea, and as long as it made sense within the world's logic—

The Hokage was more than willing to accept it… and endorse it.

---

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