Chapter 47 – Yujiro: Forging the Ultimate Thunder Armor and the Thunder–Fire Sword
For a few seconds, Uchiha Yujiro's brain went completely blank.
Then he decided—
Nah. Overthinking ruins the fun.
This world's entertainment industry was practically prehistoric.
People here would get nosebleeds just reading Make-Out Paradise or watching a simple "Harem Technique."
A move as grandiose as Thunder–Fire Sword? Forget seeing it—most had never even heard of something that cool.
So honestly, yeah. The name was fine.
---
Name aside, the technique's power was no joke.
Back in the day, Yujiro's Dual Blade Style: Crimson Moon Sword Dance could go toe-to-toe with Shisui's "sure-kill" moves.
Now, this new and upgraded Thunder–Fire Sword Dance?
It would blow that old version out of the water.
If Shisui hadn't been out somewhere joyriding on missions, Yujiro would've gladly tested it on him already.
But alas—new moves and no sparring partner.
A tragedy for any genius ninja.
"Should I… try pushing it further?" Yujiro muttered to himself.
"Maybe… evolve it into Lightning Cutter?"
He scratched his chin thoughtfully.
A lot of people confused Chidori and Raikiri (Lightning Cutter) as the same jutsu, but a real scholar knew—
they were related, yes, but Raikiri was the advanced form of Chidori*, boasting greater speed, sharper focus, and far higher destructive power.
So of course, Yujiro figured he might as well take Chidori Blade and upgrade it into Raikiri Blade.
Then—and only then—could his Thunder–Fire Sword live up to its name.
But instead of obsessing over Raikiri just yet, he shifted his attention to something even more ambitious—
The Lightning Release Chakra Mode.
---
Among the scrolls in the Uchiha archives, there were three versions of so-called "Lightning Armor."
The first came from one of the Seven Ninja Swordsmen of the Mist—Kurosuki Raiga, wielder of the Thunder Swords, Fangs.
His "Lightning Armor" was… meh.
A glorified shock blanket, basically—using lightning to form a thin layer of defense.
But that was to be expected.
Kiri specialized in Water Release, not lightning.
A Mist-nin trying to master Lightning Armor was like a fish trying to roast itself—doomed and a little sad.
Not everyone could be like the Uchiha—who, even with no decent ninjutsu, could just flick on their Sharingan and suddenly rediscover lost jutsu from the Warring States Era.
---
The other two versions were from Kumogakure—
the Lightning Release Chakra Mode and its perfected form, Lightning Armor: Raijin Mode.
Some people even called it "The Armor of the Thunder God."
It was the perfect all-rounder—enhancing speed, strength, and defense simultaneously, with no weaknesses.
Activate it, and your hair stood up like a Super Saiyan's.
At full power, even the godlike Sasuke at his peak would need to take you seriously.
After all, the Third Raikage himself used this very technique to fight the Eight-Tails to a draw—
then went on to battle ten thousand ninja for three days and three nights straight.
He didn't die in battle.
He died from exhaustion.
That's how powerful it was.
When you could have that, why settle for the Kiri knockoff?
It was like comparing a smoking-hot bombshell to a flat, nameless background extra.
---
And as for Yujiro—speed, strength, and taijutsu were already his core strengths.
If he could master the Lightning Chakra Mode, his overall power would skyrocket—
exponentially.
Shisui wouldn't even be able to see him move.
Before, he couldn't practice lightning techniques because he lacked the element.
Now that he had it?
Raijin Armor was as good as his.
Recalling the scroll's detailed notes, Yujiro began his training.
He activated his Sharingan and focused on the flow of his chakra.
"So… it's about channeling lightning throughout the body—stimulating the muscles and nervous system to enhance reaction speed, strength, and resilience."
He could feel the faint tingling of chakra crackling beneath his skin.
"And with prolonged exposure, the body adapts… the cells reinforce themselves.
Training under Lightning Armor doesn't just make you stronger—it evolves you.
The stronger your body gets, the stronger the armor becomes."
Yujiro grinned, lightning sparking faintly at his fingertips.
"Keh keh keh… I see… I see!
I'm starting to understand everything!"
His laughter echoed across the empty field, sharp and electric.
Sure, he was still far from mastering it,
but he could already see that dazzling future—
a future of crackling thunder and blazing glory.
Lightning Armor active.
Eight Gates open.
Dual Blades ignited with thunder and fire—Thunder–Fire Sword Dance!
In an instant, he'd slice through the Ōtsutsuki like tofu,
unite the ninja world under his reign,
and crown himself as the Emperor of Shinobi!
And then—
he'd drag every last daimyō and noble out to the courtyard and offer them as sacrifices to the gods.
A new golden age of equality and power would begin.
Just imagining it sent a thrill down his spine.
"Keh keh keh… hahahahahaha!"
From across the Uchiha training field, a small figure walking hand in hand with his parents stopped in his tracks.
Uchiha Itachi frowned.
That unmistakable "Uchiha-style laughter" — a sharp, smug "Keh keh keh keh!" — echoed through the air, belonging to none other than Uchiha Yujiro, the clan's current rising star.
Itachi glanced at his father.
He could tell.
That man — the one whose name now carried weight throughout the village — clearly didn't like him.
Yujiro's attitude toward him wasn't hostile, exactly.
It was worse.
Indifference.
He treated Itachi like an ordinary passerby.
If it had been anyone else, Itachi wouldn't have cared.
But he was supposed to be different — the one who inherited the Will of Fire, the boy destined to shoulder Konoha's future.
And Yujiro, too, had inherited that same will.
You're fire, I'm fire. Shouldn't we be kindred flames? Allies?
But Yujiro didn't seem to think so.
To him, Itachi was… nothing more than a background character.
"Maybe… it's because I'm too young?" Itachi wondered, a faint crease forming between his brows.
---
If Yujiro could have heard that thought, he would've laughed in his face.
Or maybe grimaced.
"No, kid. It's not your age."
"It's because you're the lunatic who'll one day butcher the entire Uchiha clan — men, women, children, even the family cat if it breathes too loudly.
Seven hundred people, from great-grandmothers to newborns… gone in one night. All by your hand."
Even if Yujiro knew that in this worldline, that tragedy would never happen—
just imagining it was enough to make his blood boil.
Every time he looked at Itachi, an involuntary chill ran down his spine, his body trembling despite the summer heat.
Anger and revulsion twisted together in his gut, and his eyes stung with tears that he'd never admit were there.
Sure, people could argue.
"Itachi only did it because Danzō forced him."
"He was trapped, brainwashed, misunderstood."
"If someone had guided him better, maybe he wouldn't have gone mad."
Yujiro didn't care.
"Nope. Not buying it. I don't do sympathy for psychopaths."
The very thought of Itachi's future deeds made him physically ill.
Like, about-to-throw-up ill.
So he'd already decided—
keeping things at "polite stranger" distance was the best possible outcome.
No drama.
No forced friendship.
No emotional investment.
Let the prodigy live his prodigy life.
Yujiro would live his.
Everyone stays sane.
---
Unfortunately, Uchiha Fugaku didn't see it that way.
To him, Yujiro was the clan's most promising young powerhouse, and more importantly, someone who actually got along with the elders and the Hokage.
In other words — perfect mentor material.
"He gets along with Shisui, he's on good terms with the Hokage… why can't he train Itachi too?"
He'd already asked twice before, but Yujiro had politely declined both times.
Fugaku figured it was because he hadn't shown enough sincerity.
So this time, he brought everyone—wife, son, even little Sasuke—to make it a full family visit.
Surely, this time Yujiro wouldn't refuse in front of the whole clan head's family.
Surely, he'd give them some face.
Right?
Wrong.
Yujiro didn't even hesitate.
He didn't just not give face—
he practically tore the gift wrap off the "No" and slammed it on the table.
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