The universe does not always obey reason. There are worlds where physics is merely a suggestion and biology becomes a grotesque canvas of impossible proportions. In the Grand Line, humans could grow three meters tall, lift warships with their bare hands, and crush steel with their teeth without possessing mystical energy or supernatural power. It was a world ruled by the brute force of will and the madness of the oceans.
For Eta, the Architect's sixth avatar, adapting to this reality was not a tactical challenge but a structural crisis.
The midday sun hammered the vast parade ground of Marine Headquarters in Marineford. Eta, barely nine years old, ran in formation alongside hundreds of recruits. Many were twice his age and size. They carried packs loaded with fifty kilograms of lead. The salty air burned in their lungs, and the sound of boots striking stone formed a hypnotic, exhausting drumbeat.
Eta did not possess the lineage of the Navy's "Monsters." His body was that of an ordinary child. If he tried to carry that weight with brute muscle alone, his spine would collapse.
But Eta wasn't using only his muscles.
Physical Stress Analysis (Sage Core):
Lumbar tension approaching rupture threshold (92%).
Executing cross-compensation: Implementing Total Concentration Breathing pattern (Phase 2) from Instance Gamma to hyper-oxygenate tissues. Combining with bone-alignment technique from Instance Beta. Load redistributed to central skeletal structure. Energy expenditure stabilized.
Eta exhaled a thin thread of white vapor and kept running. His face did not show the grimace of pain that twisted the expressions of the other recruits. His dark, analytical eyes remained fixed on the horizon, processing the variables of the environment.
The goal of his insertion into the Marines was not to climb ranks or enforce "Absolute Justice." Jonathan needed the most extreme physical fundamentals a magic-less human body could achieve: Rokushiki (the Six Naval Powers) and, above all, the pure manifestation of spirit—Haki.
Hours later, endurance training ended and technical instruction began. The instructor, a rear admiral with scars crossing his face, stood before a pillar of solid concrete.
"The human body is weak," the instructor barked, his voice echoing across the yard. "But discipline turns it into a weapon. Tekkai!"
The officer tightened his muscles. There was no visible aura, no flash of energy, but when a veteran recruit struck his chest with an iron bat, the bat shattered in two with a dull crack. The officer did not even blink.
Eta watched the demonstration, his pupils dilating as the Sage Core broke the phenomenon down.
Lexical Analysis of Local Ability (Tekkai):
Unlike Alpha's Ki or Epsilon's Chakra, this technique does not use energy flow to create a shield. It is a purely psychosomatic lock. The user saturates muscular nerve receptors, contracting the cellular fascia until it reaches a density equivalent to steel.
Sage suggestion: User Eta's hardware does not yet possess the muscle mass required for this contraction. However, if Ki-pressurization theory (Alpha) is applied within the muscle tissue at the exact moment of the psychosomatic lock, the resulting density will mathematically exceed conventional steel.
"Alright, maggots," the instructor ordered. "Pair up. Try to harden your core. Anyone who steps back from a punch runs five hundred laps."
Eta was paired with a fourteen-year-old recruit, a broad-shouldered boy from one of the South Blue islands with fists like stones. The boy looked at Eta with a mix of pity and disdain.
"I won't kill you, kid. But it's gonna hurt," the recruit said, raising his fist.
Eta didn't adopt a defensive stance. His arms hung at his sides. He inhaled, closing his eyes briefly as he executed the syntax in his mind.
"Sage Core. Block pain receptors. Muscle tension at eighty percent. Route latent bioelectricity to the solar plexus."
Commands executed. Core density increased.
The older recruit's fist slammed directly into Eta's stomach with enough force to shatter the ribs of a normal adult.
The sound was dull and solid—like flesh striking the trunk of an ancient oak.
Eta didn't move a millimeter. His feet stayed rooted in the stone. The older recruit, however, gasped in pain and staggered backward, clutching his bruised knuckles. His eyes were wide after hitting what felt like an iron wall hidden beneath the skin of a nine-year-old boy.
Eta exhaled, relaxing his muscles.
There was no magic. No elements.
It was pure science of violence compiled by the Architect.
From across the yard, the instructor narrowed his eyes, mentally noting the identification number of that silent child.
That evening, as the sun set and painted Marineford's waters red, Eta withdrew to a quiet corner behind the barracks. His muscles burned. The forced Tekkai had caused severe micro-tears in his abdomen. He needed to repair the damage and assimilate the experience.
He took a bokken (wooden sword) from the training rack and began performing Gamma's breathing katas. Slow, deliberate movements designed to guide blood flow toward damaged tissue and accelerate cellular regeneration. The wooden blade sliced the air with a perfect whistle, devoid of aggression yet filled with purpose.
"Your stance… is impeccable," a hesitant voice said behind him.
Eta finished the rotation before turning slowly.
Standing there was a girl about his age, with thick-framed glasses and a slightly messy recruit uniform. She held a practice sword that seemed a bit too large for her.
It was Tashigi.
"Your attack angle is off by three degrees," Eta replied neutrally, analyzing the way she held the weapon. "You're gripping the hilt too tightly with your right hand. A sword is not a hammer. It's an extension of the wrist."
Tashigi blinked, surprised by the cold precision of the comment. She glanced at her own hands, loosening her grip slightly, then looked back at Eta with a mixture of reverence and curiosity. Marine children were usually loud—boasting about strength or loudly dreaming of capturing pirates. This boy was like a deep, dark well: silent, but with undeniable weight.
"I'm Tashigi," she said, bowing awkwardly as her glasses slid down her nose.
"Eta."
"Did a famous swordsman teach you, Eta? I've never seen a style that feels so… sad. Like you're remembering instead of attacking."
Her words pierced the avatar's analytical armor for a fraction of a second. The Asynchronous Synchronization had transmitted Gamma's memories: snow stained with blood, families slaughtered by demons, the weight of death. Despite her clumsiness, Tashigi possessed a keen instinct for the soul of swords.
"I didn't learn from fame," Eta answered softly, lowering the bokken. "I learned from loss. If you want, I can show you how to align your shoulders."
Tashigi nodded vigorously, her cheeks turning slightly pink.
For the next hour, Eta was not an implacable warrior but a patient teacher. He corrected her stances with the Sage's anatomical precision, yet with the quiet empathy that defined the Architect. In that small corner of Marineford, a bond based on discipline and silence began to form—a seed that, like in the other worlds, would grow slowly and deeply.
But Eta's mind never stopped processing the broader picture. While helping Tashigi, the Sage Core continued running background processes.
Discovery Notification (Sage Core):
During daytime combat, the system recorded anomalies in the bioelectric signals of several senior officers. They emitted intention frequencies before executing physical movements.
Local variable identified: Observation Haki (Kenbunshoku Haki).
Initiating logical decoding.
"Haki isn't energy," Eta thought while correcting Tashigi's foot position. "It's the weight of consciousness forcing its existence onto the material world. Kenbunshoku doesn't predict the future. It simply reads the source code of intention before the command travels from brain to muscle."
Compilation Hypothesis:
If intention-reading (Observation Haki) synchronizes with Alpha's life-energy radar (Ki) and Beta's combat-flow analysis (Jujutsu), the user will process the environment in real time as if possessing an omniscient field of vision.
Eta closed his eyes for a moment.
Suddenly the world changed.
He no longer depended solely on his retinas.
He could feel the rapid beat of Tashigi's heart, the wind striking the fortress walls a hundred meters away, and the stern gaze of the instructor smoking a cigar from the watchtower.
Will was not measured in milliliters of oxygen or volts of Chakra.
It was measured in Presence.
Eta opened his eyes.
Unified Energy was acquiring its ultimate defensive layer.
The Marines believed they were training an ordinary soldier.
They had no idea they were feeding the algorithms of a developing god.
And deep within the shared neural network, Eta knew the time to return to the Dreamspace was approaching.
The puzzle pieces were ready to be assembled.
And the multiverse was not prepared for the result.