Inside the secret room, more than a dozen wooden cabinets of varying sizes lined the walls. Their shelves were neatly stacked with a dazzling array of scrolls. The worn leather covers and yellowed pages carried the weight of history accumulated over time.
Asuka stepped forward, pulled out a scroll, and scanned it quickly.
The contents were astonishing.
The annotations ranged from basic Five Elements Ninjutsu to advanced Sealing Jutsu, Secret Techniques, and even Forbidden Jutsu—covering nearly half of all known techniques in the Ninja World.
He casually took another scroll from the Sealing Jutsu section.
The moment it unfurled, intricate cursed seal patterns unique to the Uzumaki Clan filled the page. Not only was it a complete Sealing Jutsu, but the margins were densely packed with notes—training difficulties, common mistakes in hand seals, and even real-time adaptation strategies.
The level of detail made it feel as though a master were teaching him directly.
Putting it aside, Asuka moved to the standard Ninjutsu cabinet. Even something as basic as the Fire Release: Flame Bullet Technique had optimization notes attached.
He paused, scanning the room, and sighed inwardly.
"As expected of Konoha…"
Not only was their collection vast, but the real value lay in these annotations.
They pinpointed the exact problems Ninja faced during training—reducing years of trial and error into clear guidance.
For basic Ninjutsu, this was helpful.
For complex Sealing Jutsu and Secret Techniques—it was invaluable.
Asuka, who had spent countless hours struggling through Uzumaki sealing formulas, understood this deeply. Back then, he had been trapped for days within flawed curse mark structures.
If he'd had guidance like this, he would've avoided many dead ends.
Looking closer, he noticed something else.
The handwriting varied.
Water Release techniques and many Forbidden Jutsu bore the marks of Senju Tobirama, while basic elemental techniques were often annotated by Hiruzen Sarutobi.
These weren't just explanations—they were improvements.
For example, Tobirama had simplified the originally complex hand seals of the Water Dragon Bullet Technique into just a few seals, drastically improving casting speed.
These scrolls weren't just records.
They were the accumulated wisdom of Konoha's strongest figures.
This was one of the true reasons Konoha remained the "cradle of geniuses"—each generation stood on the shoulders of the last.
But as Asuka dug deeper, a pattern emerged.
Basic Ninjutsu had many contributors.
Secret Techniques and Forbidden Jutsu… far fewer.
The reason was obvious.
These techniques were either too dangerous or too difficult. Konoha's leadership would never allow them to spread freely.
More importantly—
Many of these scrolls were protected by hidden barrier seals. Any unauthorized inspection would immediately trigger an alarm.
For most Ninja, this would be an insurmountable obstacle.
For Asuka—it was trivial.
He was no longer the same person he once was.
After studying Kirigakure sealing methods, reverse-engineering Minato Namikaze's techniques from the ruins of Rōran, and refining his own understanding through relentless experimentation, his Sealing Jutsu had reached an expert level.
Sealing Jutsu was notoriously difficult—but mastering Uzumaki techniques placed him among the elite.
He easily bypassed the defensive barriers.
His focus remained on the Sealing Jutsu scrolls.
Like a sponge, he absorbed everything.
Even when encountering complex cursed seal logic, a single annotation would often clarify the core issue instantly.
These notes were concise but profound—only someone with immense mastery could write them.
Then, something caught his attention.
Many high-level Sealing Jutsu scrolls had annotations from only one person.
No later edits.
Not even from Tobirama or Hiruzen.
That meant one thing—
These notes were already perfect.
There was only one person in Konoha's history who fit that level of mastery:
Uzumaki Mito.
The wife of the First Hokage.
The first Nine-Tails Jinchūriki.
The one who had sealed the Nine-Tails itself.
Only someone like her could leave behind such flawless understanding.
---
Time passed unnoticed.
Asuka completely immersed himself in the ocean of knowledge.
With his enhanced abilities, he didn't need to worry about Chakra depletion or physical fatigue.
Occasionally, he would step out briefly—to test a newly learned sealing technique or gather information—but otherwise, he remained hidden in the room.
Even when patrol Ninja entered, his stealth ensured he was never detected.
Day after day, his mastery grew.
From basic cursed seals to complex sealing arrays, he absorbed it all.
At this point—
He could truly be called a Sealing Jutsu master.
---
Finally, he placed down the last Sealing Jutsu scroll.
His gaze shifted—
To the Forbidden Jutsu section in the corner.
Now, his real objective began.
Among them, one stood above the rest:
Edo Tensei.
He bypassed the protective seals with ease and slowly unrolled the scroll.
This was the original version created by Senju Tobirama, untouched by later modifications.
Even so, Asuka studied it with intense focus.
A technique that summoned the dead back into the world—
Its appeal was universal.
Soon, he grasped its core principles.
Strictly speaking, Edo Tensei was a branch of Summoning Jutsu.
Its essence:
To call back the soul of the dead from the Pure Land into the living world.
To perform it, two conditions were required:
A physical sample of the deceased
A living body as a vessel for the soul
Once summoned, the dead retained all their abilities from life.
They possessed infinite Chakra and immortal bodies.
Aside from slightly reduced peak strength—
The technique was nearly flawless.
A surge of excitement rose within Asuka.
Without hesitation, he began memorizing every detail of the scroll—
Already planning his first experiment.
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