His fingers slid across the old, time-worn scrolls—this shit was the good stuff. He would make sure to master them soon enough.
So many of the seals were powerful. He liked them all, yet he couldn't learn everything now. He needed to wait for later. His original self would probably summon 2,000 shadow clones and have them working on the seals.
Damn.
Oh well, none of his business.
His gaze landed on some scrolls.
Two scrolls, to be exact.
Bound in black leather, sealed with blood-red wax that pulsed faintly with chakra—even after all these years.
As his hand hovered near them, he felt something... primordial.
Not malicious. Not even vengeful.
But expectant.
Like these seals had waited for him.
The wax melted at his touch—no hand seals, no incantation—just recognition.
And the names practically carved themselves into his mind:
[Fuinjutsu: Kuro Hitsugi no In]
Sealing Technique: Seal of the Black Coffin
The name alone made his breath catch.
Reading through the chakra mechanics, his mouth quirked up into a twisted little grin.
He devoured the diagrams—lines, curves, matrices. It was complex, like watching an advanced Python script that manipulated both gravity variables and interrupt commands in real-time.
The formula required custom chakra pressure nodes, with anti-escape interrupts nested inside impaling subroutines. The core seal was a gravitational anchor glyph forged from five recursive spirals.
Ain't no way some average Jōnin was ever using this.
Wow, those seals were truly powerful. He was left in awe of their might.
He loved it.
The chakra spears were coded like interference packets—canceling out jutsu usage and disorienting the chakra network. This thing wasn't just designed to kill.
It was designed to erase ninjas.
Then came the second scroll:
[Fuinjutsu: Goryūtenmetsu no Fūin]
Sealing Technique: Five Dragon Destruction Seal
This one?
This one was insane.
He traced the battlefield glyph matrix—it spanned entire grid segments like a god-tier ritual script that weaponized the terrain itself.
It was like reading a multi-threaded battlefield AI system where five autonomous dragon constructs operated independently with their own conditionals, targets, and seals per target.
Each glyph heart served as a CPU. Each dragon was a chakra daemon encoded with logic that followed command protocols like "seal all chakra-based constructs in X radius," "prioritize high-signal targets," and even "fuse when facing an S-Rank target."
He was reading battlefield code written in ancient blood.
"This is... beautiful," he muttered to himself. It was perfect... just so perfect.
It took everything in him not to start testing it right there—but he wasn't an idiot.
He stored both scrolls, etched every diagram into his memory with the same reverence a monk gives holy scripture, then spent the next four hours systematically raiding everything else.
As in everything—every ounce of this place was fully raided... leaving absolutely nothing behind.
With his upgraded sealing, he could make storage scrolls on the go now, and they were even better and stronger than the ones most people used.
This was life.
Sometime Later
Seijuro's clone sat cross-legged under low torchlight.
Dozens of scrolls, artifacts, and sealing inks lay neatly arranged in front of him.
But all he focused on—
Were two blank scrolls, and two names:
Kuro Hitsugi no In.
Goryūtenmetsu no Fūin.
He began redrawing the first.
Like a programmer rebuilding code from memory—only this wasn't Python anymore.
This was C++ mixed with interdimensional runes.
Line after line. Spiral after spiral.
He tested the chakra flow between sections, occasionally stopping to debug faulty flow lines, rechecking the density arrays. At one point, he cursed loudly—his entire glyph matrix had short-circuited due to an unstable wind chakra anchor.
He gritted his teeth.
"No... do it again."
This time—slower.
He visualized each layer of the coffin seal not as jutsu—but as programmatic logic.
Gravity field → Compression Lock
Check substitution routine → If triggered = true, cancel
Proceed → Spike Subroutines ×12
Chakra Disruption: Execute()
He repeated this mental script until it burned itself into his subconscious.
The dragon seal would come later.
It was beautiful, yes, but ridiculously impractical without preparation.
Still...
"If I can master these..."
He closed his eyes, breathing deeply, chakra ebbing in tight coils under his skin.
"Then not even Biju will scare me."
He wasn't wrong. With this knowledge, he didn't need to be scared of even the Nine-Tails. They could both be easily sealed by him. How fun. He liked this a lot.
When his main self arrived here, 2,000 clones would be summoned and have them practicing Fuinjutsu, while the main body focused on his experiments and other stuff.
That would be good.
Shadow Clone was just such a goated ninjutsu.
He'd probably learn more about it soon, but oh well.
Until then, experimenting with the cells he had right now was good enough.
In a few years, when the Biju chakra had been tamed, he could, in fact, train himself hard.
Becoming the strongest.
Until then...
He would dutifully train himself. He shall not overlook his basic training.
After all, he was merely a Special Jōnin now.
Speaking of which, his main body should be turning twelve soon. How fun.
His birthday was soon. That was good to know.
The clone sighed... before closing its eyes and using the last of his chakra... to make another shadow clone.
The clone jump was simple:
Guard this place till original was back.
The clone was imbued with the remaining 15% of his chakra, which was still a shit-ton of chakra—enough for the average Jinchūriki to go stage two.