Some techniques aren't learned—they're survived.
The dim lighting did nothing to hinder Kamizuki Gen.
By channeling chakra into the scroll, he could distinguish ink from blank space—and read every detail. There was no Braille in the shinobi world.
Fortunately—
there was chakra.
Of course, infusing chakra into ordinary paper wouldn't damage it like chakra test paper—but it still required precise control.
For Gen—
that was trivial.
He had long adapted to this way of "seeing."
"Fire Release: Exploding Flame Formation…"
"Before battle, bury a large number of explosive tags underground. Once the enemy enters the zone, use chakra to attach the tags to their legs…"
Gen couldn't help but shake his head.
Old-school ninjutsu—
was painfully straightforward.
So much setup—
just to blow off someone's legs?
This didn't feel like B-rank lethality at all.
A schemer's technique.
Not learning it.
That was what he thought.
But his body was honest.
He rolled up the scroll—
and stuffed it into his ninja pouch.
Next—
he moved to the A-rank section and opened one of the two scrolls.
"A-rank Ninjutsu: Water Body Flicker Technique."
"This technique allows chakra to be pre-infused or instantly infused into water. Upon being attacked, the user can swap positions with the chakra-infused water."
"The attacked body transforms into water."
"The real body reconstructs within the water."
"With water-nature chakra, this enables high-speed movement or substitution effects."
Gen's brows lifted.
He understood now.
These high-level techniques—
were the foundation of Hanzō's strength.
This—
was good.
Worth learning.
The only limitation—
it required an environment with sufficient water.
But that wasn't a problem.
A skilled shinobi could reshape the battlefield at will.
Take Kisame, for example—
with enough chakra, terrain control was trivial.
Gen opened the second A-rank scroll.
"Poison Extraction."
"Stage One: Poison Sac."
"Hand seals: Snake → Boar → Ram. Function: stabilize chakra flow."
"To cultivate this technique, one must first nurture a poison sac within the body…"
"Steps—ingest small amounts of plant and animal toxins daily to build resistance. Use chakra to compress toxins into a 'poison core' within the abdomen, then wrap it into a sac-like structure…"
"Effect: Once formed, the poison sac can store various toxins."
Gen's fingers brushed the text.
His expression turned strange.
"…A poison sac?"
"Not a tumor?"
A technique that literally taught you how to grow something inside your body wasn't exactly reassuring. One mistake—and you'd grow something far worse.
He continued reading patiently.
At the end of the section, a small line caught his attention:
"This technique can also be practiced without cultivating an internal sac—external poison sacs may be used."
"…What?"
Gen felt his scalp tingle.
The guy who wrote this—
was trying to kill future users, wasn't he?
If I can't use it after I die, no one else can either.
He thought it through.
Hanzō likely used an external poison sac—from the salamander.
Though, for convenience—
he probably implanted it into his own body.
A ruthless man.
"Stage Two: Poison Hand."
"Objective: Transform the hands into 'toxin refinement tools,' extracting and condensing poisons from all substances."
"Method: Soaking—immerse hands daily in diluted toxin solutions (e.g., scorpion venom + chakra metal powder) for months…"
"Until the skin mutates and forms a toxin-resistant layer."
"Poison Hand—complete."
Gen's mouth opened slightly.
"…So the shinobi world has its own version of alchemy now."
If mastered—
touch meant death.
He moved on to the final stage.
"Stage Three: Poison Body."
"Objective: Fully toxify all body cells, achieving immunity and autonomous toxin secretion."
"Method: Bone marrow modification."
"Secret formula: Salamander liver oil, Hōzuki clan liquefied cells, 'Peacock Stone' powder from Hoshigakure."
"1. Under extreme yin conditions, undergo a three-day toxin bath."
"2. During the process, chakra pathways reconstruct, allowing toxins and cells to coexist."
Gen was genuinely stunned.
He read the final notes:
"Upon completion—sweat and saliva contain controllable toxins. Breathing can release poison. User gains immunity to 99% of known toxins. User may resist tailed beast chakra corrosion (unverified)."
"…Hanzō probably never reached this stage," Gen muttered.
Otherwise—
he wouldn't have needed a gas mask all the time.
He rolled up the scroll and stored it.
He was already immune to genjutsu.
If he gained toxin immunity as well—
that would patch another major weakness.
Then—
a thought struck him.
Gen reopened the scroll and carefully reanalyzed the three stages.
"…Something's wrong."
The order—
was flawed.
At zero toxin resistance—
how could someone safely cultivate a poison sac?
Accumulating toxins internally without sufficient resistance would eventually exceed the body's threshold.
Result—
death.
But—
what if the order were reversed?
Start with—
Poison Body.
Build resistance first.
Then—
Poison Hand.
Then—
Poison Sac.
That way—
even if mistakes were made—
you wouldn't die immediately.
Gen shook his head.
"You can eat recklessly…"
"…but you can't train recklessly."
Too bad—
no one was here to demonstrate the technique.
That would've saved him a lot of effort.
Even if Hanzō were revived with Edo Tensei—
he likely hadn't mastered it fully.
"This technique has a terrifying ceiling."
Gen made his judgment.
Placed in A-rank—
but in his eyes—
fully mastered—
it could easily qualify as an S-rank forbidden technique.
With that thought—
he moved to the S-rank section.
Picked up the final scroll.
Opened it.
"C-rank Ninjutsu: Summoning Technique."
"Salamander."
Gen continued sensing—
confirming it was a summoning contract scroll for the salamander clan.
Just like Jiraiya's toads—
write your name.
Form a contract.
Gain a summon.
A partner in battle.
And suddenly—
the value of this so-called "S-rank section"—
felt very different.
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