As a Grey Knight In Naruto

Chapter 99 – Beneath the Stone and Steel

The lab was quiet.

Deep beneath the Hokage Tower, where only he could tread, Hajime stood in the center of his sanctum. Light crystals pulsed gently above, casting reflections across obsidian floors and the five containment pods lining the far wall. The hiss of steam marked the completion of the latest organ cycle.

The space no longer resembled the crude konoha medical lab it once was. Now it looked like a cathedral of steel and silence, sculpted by his mind alone, every pillar, surface, and arch carved with inhuman precision. The walls rose tall, engraved with old languages Hajime had seen in his visions and dreams. Symbols of war, ascension, and purity.

His armor rested to the side, displayed upright in a recessed shrine of sorts. The massive silver suit was scarred and scorched from battle, yet stood like a silent sentinel. His halberd rested beside it, humming faintly with restrained force.

Hajime himself stood shirtless, his physique lit by the dim ethereal blue glow from the pods.

His body was dense and perfect, not exaggerated in form, but in the feel of something forged, not grown. Skin pale and unblemished. Sinew like steel cords beneath it. No wasted tissue. No unnecessary bulk. He was the embodiment of calculated purpose.

He turned his gaze toward the containment tanks.

One pod stood empty, the one that had once held the Larraman's Organ, already grafted into him. The special gland that sealed wounds instantly and stopped him from bleeding.

Now, four more were ready.

The Catalepsean Node floated gently in its pod. A small, dense mass of folded nerve-like tissue. With it, Hajime could sleep with half his brain at a time, or simply not sleep at all. Total vigilance.

The Preomnor next, a pre-digestive organ, capable of purging any poison or toxin before it reached his stomach. Its veins shimmered faintly in the tank, waiting to be connected.

Beside it, the Multi-Lung, a tri-lobed respiratory organ. It would let him breathe smoke, gas, toxins, even underwater with ease. A tool of survival.

And finally, the Occulobe, an enhancement to his eyes and brain connection. It would let him see in the dark, read a person's micro-tremor at fifty meters, and track even the fastest movement with clarity.

No longer just organs.

They were instruments of transformation.

Hajime stepped forward and silently formed a single shadow clone. It wasn't like others, this clone held no personality, no individuality. Only a separate portion of his vast chakra, assigned a singular task:

The implantation.

The clone did not speak. It turned to the surgical table and waited.

Hajime stood by the altar-like workstation, silently sterilizing every inch of the lab psychically, not just the tools, but the very air, the walls, even the micro-space between atoms. No bacteria, no dust, no chance of infection. He had already sterilized this room dozens of times before. Today was no different.

He breathed in.

Then, with a simple gesture, he cut the pain receptors in his own brain, one by one, silencing any discomfort or reflex. His body relaxed, and with another breath, he induced a deep meditative psychic sleep, entering a controlled subconscious state.

He lay on the reinforced surgical table himself.

The clone stepped forward.

With Hajime's precise hands and trained technique, enhanced by his perfectly controlled body, the clone worked with unshaking calm.

No surgical arms. No assistants.

Only Hajime, performing surgery on Hajime.

The clone began the procedure.

First: the brain.

The cranial saw hummed softly as the clone opened the posterior skull, just above the nape of the neck with a chakra Scalpel By Hajime. Beneath layers of Strengthen and hard bone lay the upper brainstem, where the occipital lobe and cerebellum converged. There, the Catalepsean Node, a small, coiled organ studded with neural filaments, was gently inserted.

Thin, silvery threads extended from the node, seeking connection with the reticular formation and pineal region. A brief pulse ran down Hajime's spine as the implant fused into his neural lattice. His body twitched. His jaw clenched, then relaxed.

Next: the Occulobe.

Rather than approach through the eyes, the clone exposed a section of the mid-cranium, just behind the ocular nerves. The skull flap lifted with guided precision. The Occulobe, crystalline and pulsating faintly, was seated near the optic chiasm and the visual cortex.

Its tendrils reached out, threading into the optic nerves like roots into fertile soil. Hajime's visual centers flickered with electric life. New spectrums of light whispered at the edge of perception, ultraviolet, infrared, and something stranger still: the motion of chakra as visible auras.

His eyes remained shut, but the world had already begun to change.

Then: the chest.

The clone made a vertical incision through the thoracic cavity. Hajime's ribcage parted, each bone smooth and reinforced, interlocked like armor. The Larraman's Organ already active, sealed blood vessels instantly, keeping the surgical field dry.

The Preomnor came first. It was inserted just above the stomach, connecting directly to the lower esophagus. The gland's lining already secreted its specialized neutralizers. Its muscular valves latched into place, ensuring that no toxin, virus, or ingested corrosive would ever reach his core.

Then: the Multi-lung.

The clone carefully detached one of Hajime's existing lung lobes and expanded the cavity below it. The tri-lobed Multi-lung, a dense organ of folded alveolar chambers and reinforced bronchial lines, was positioned in parallel to his natural lungs.

Bronchi and arteries were spliced, and chakra threads sealed the integration points. For a moment, Hajime's chest rose unnaturally, then stabilized. Breath flowed again. But now, it carried more than oxygen: it carried survival across any battlefield, gas, smoke, water, void.

As each organ settled, the gene-seed, recognized the additions. It pulsed quietly inside him. Optimizing. Syncing.

And the organs began to harmonize, as if always meant to be part of the whole.

The clone paused, watching the vitals. No flicker of instability. Pulse steady. Breathing smooth.

Then, it stepped back.

The process had taken hours. No fanfare. No monologue.

Just precision. Purpose.

The clone dispelled silently.

Hajime's eyes fluttered open.

And for a moment… everything looked different.

The light dimmed, yet he could see more clearly. Every crystal pulse overhead became a moving dance of refracted color. The faint heat trail of old footsteps lined the floors.

He sat up.

He healed himself completely with psychic before completely standing up.

No grogginess. No pain. No weakness.

He stood and walked calmly back toward the suit on the side of the lab. His armor waited. But he did not don it yet.

He simply stood there a moment longer, bare-chested beneath the holy vault of steel and mind, the light glinting across his skin. He looked into the reflection of the shrine wall.

This body....

Becoming epitome of perfect.

Engineered.

He had no need for boasting. No pride. Only movement forward.

Outside the Hokage Tower, peace had begun to settle again across the land.

But below it

Hajime had just taken one more step beyond the limits of man.