Chapter 39: Natural Energy
Izumo faintly sensed the presence of a pale green, nearly transparent current of air swirling around him.
This was Natural Energy—a power drawn from the texture of the cave's stone walls, from the damp cracks in the soil, and even from the microorganisms drifting invisibly through the air.
Natural Energy was a massive force that existed between everything in heaven and earth within the world of Naruto. It was everywhere, and could be described as the planet's very "vitality of life."
A ninja who could gather Natural Energy around themselves and merge it with their own chakra was known as a Sage, and the techniques they used were called Senjutsu.
Just from the name alone, it was obvious that a Sage and Senjutsu techniques were on an entirely different level compared to ordinary ninja. Anything related to Natural Energy could be considered the most advanced and profound knowledge in the shinobi world.
The sheer majesty of Natural Energy could be seen through the Three Great Sage Regions.
Take Great Toad Sage Gamamaru of Mount Myōboku as an example. He had lived for over a thousand years since the era of Kaguya, even though the lifespan of an ordinary toad barely exceeded thirty years. This alone proved that Natural Energy could break through the limits of aging.
Right now, the particles of Natural Energy—once like invisible strands of fine silk scattered throughout the universe—were being pulled in by a master-level Chakra Extraction Technique.
Like iron filings drawn toward a magnet, they flowed toward Izumo's tanden along unseen pathways, weaving a delicate web of energy throughout his entire body.
"Hah—" Izumo exhaled a murky breath. He could clearly feel the Natural Energy slowly fusing into his newly formed Chakra Seed.
The chakra that had once been as clear as blue crystal now shimmered with a warm emerald glow. As it flowed, it carried a rhythm like the growth of sprouting plants—it was no longer just a carrier of raw energy, but something closer to a living being with its own breath.
The new Chakra Seed inside his tanden had grown to nearly three times its previous size. Its surface was covered in intricate, leaf-like patterns that resembled the interwoven roots of an ancient tree.
Streams of three-colored light—pale green, milky white, and light blue—circulated endlessly within those grooves. The fluctuations it emitted felt as gentle as a spring breeze brushing through a forest, yet as vast and heavy as a mountain swamp deep in the highlands. It blended perfectly with the natural environment of the cave, as if this seed itself had been born from the universe.
When the final thread of Natural Energy fused into the seed, that point of light suddenly burst with a powerful emerald radiance. A soft glow spread outward from his tantien, flowing into every part of his body.
Izumo trembled violently. It felt as if a clear spring had erupted from deep within his bones, baptizing him in a complete bodily transformation.
His chakra pathways were widened by nearly half under the influence of Natural Energy. Hidden injuries along the walls of those pathways, left behind by excessive combat, healed at a speed visible to the naked eye. The scorched edges of the terrifying Lava Release burn on his left arm glowed faintly green, and the scab slowly peeled away, revealing healthy, rosy new skin beneath.
Natural Energy seeped into his muscle fibers, making them as tough as flexible wood soaked in oil. The explosive power of his master-level Taijutsu increased by an imperceptible ten percent.
What shocked him even more was that his cellular metabolism had slowed significantly. The exhaustion and cellular backlash caused by his earlier chakra extraction had vanished completely, replaced by a vitality that refused to fade.
It was as if every cell in his body was greedily breathing in Natural Energy; the shackles of age were being quietly worn away.
He willed himself to open the panel. New attribute data appeared before his eyes, causing Izumo's pupils to shrink and his breath to catch in his throat.
[Name]: Izumo Kamizuki (Ren)
[Age]: 11 Years Old
[Attributes]:
Physical Energy: 5.5 (+0.5)
Chakra: 5.3 (+0.5)
Mental: 5.6 (+0.5)
[Skills]:
Basic Taijutsu: Master (1203/10000)
Chakra Extraction Technique: Master (1000/10000)
Chakra Control: Master (1000/10000)
Body Flicker Technique: Master (1118/10000)
Substitution Technique: Expert (933/1000)
Transformation Technique: Expert (688/1000)
Clone Technique: Expert (685/1000)
Water Release: Starch Syrup Capturing Field: Expert (875/1000)
Earth Release: Earth-Style Wall: Expert (889/1000)
Izumo clenched his fists until his knuckles turned white. He could clearly feel the massive energy of the universe flowing around his body like a calm, endless river.
With just a single thought, that energy would continue to pour into him without end. This transparent sensation of merging with the world was a mystical experience he had never felt before.
At the same time, far above, in the Pure Land.
In the middle of a gray, silent world, a hazy figure stood atop a rolling sea of clouds. He wore a long white robe that draped down to his ankles, his face shrouded in a dim, soft glow.
He was Otsutsuki Hagoromo, the Sage of Six Paths—the one who, after pacifying Kaguya's chaos, became a spiritual guardian watching over the shinobi world.
For thousands of years, he had observed the rise and fall of ninja civilizations, watching how chakra—once meant to be a "power to connect hearts"—had gradually degraded into a tool for conflict.
Now, Otsutsuki Hagoromo's brow furrowed slightly. He raised a hand and pressed it to his chest. Pale golden chakra coiled around his fingertips, sending out faint ripples.
A flash of confusion and unease passed through his eyes. Vaguely, he sensed that a "fundamental rule" that had persisted through the ages in the shinobi world was slowly cracking, like a still lake disturbed by a thrown stone.
It was a "mark" he himself had planted within the chakra system—and it seemed someone had quietly altered it in an undetectable corner.
"This chakra…" Hagoromo's voice was soft and distant, like an echo traveling through space and time. "Someone has broken through the restraints of the chakra system I established… This aura is intriguing. Is that Natural Energy?"
Inside the cave, Izumo Kamizuki slowly stood up and stretched his body. His bones let out crisp, powerful cracking sounds as strength surged through him.
He could feel that the range of his perception had expanded severalfold. Not only could he sense the chakra fluctuations of Iwagakure patrol teams several kilometers away, he could even "hear" the faint sound of plants growing and "see" the trails left behind by earthworms moving through the soil.
"It's time to head back." Izumo adjusted his slightly worn ninja outfit.
He didn't know whether Kotetsu and Kurenai had managed to return safely to camp.
His figure shot forward, leaving the cave like a ghost. With the addition of Natural Energy, the speed of his master-level Body Flicker Technique rose to an even higher tier.
The dry leaves beneath his feet didn't even have time to scatter before his silhouette vanished into the dense forest.
Along the way, he crossed paths with several Iwagakure patrol teams, including one with a Chūnin-type tracker among them.
But that Chūnin only frowned and scanned the surroundings in confusion, completely unaware of Izumo's presence as he hid within the shadows of the trees.
Izumo streaked through the forest like a wandering spirit, slipping past every Iwagakure defensive line as he accelerated toward the direction of the Konoha camp.
Just as he was about to emerge from the dense woods, a weak cry for help drifted through the wind and into his ears.
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