All that talk about "pseudo-Rinnegan" and "pseudo-Six Paths physique" was really just Yorin gilding his own face.
If he actually had a Mangekyō plus Hashirama cells, fusing a Rinnegan would be on the table.
But Yang Release nature vs. Hashirama cells is a whole Everest apart; three-tomoe vs. Mangekyō is, conservatively, three to five Rin Noharas apart.
Using Yang-nature chakra to amp his Sharingan only beefed up his physicals—especially his eyesight—so his recon briefly rose to "near-Mangekyō" levels.
Sustain it? No way. Burn too much eye power and you go from Uchiha to Hyūga.
Short bursts, though—plenty.
"—There. Four explosive-tag traps. Lying in wait? A solid plan."
A quick scan and Yorin had the target.
One kilometer out, Shisui had ringed an area with explosive tags and was waiting. On one side of the trap he'd also set up a phantom flicker—
Clone decoy + explosive-tag trap. A classic.
What set Shisui's clone apart was the Sharingan-powered phantom flicker; even when struck it didn't pop easily, so the deception hit harder.
On that alone, Yorin would dub him "Little Naruto of Konoha."
…
As Yorin found Shisui, Shisui also found Yorin—and figured Yorin had walked into his snare.
"Got you, Yorin-nii—wait, close call, I'm the one caught. The one rushing my clone… is also a clone."
Thinking he'd cracked Yorin's plan, Shisui was grinning like he'd swallowed a fishhook.
If that clone was the trap, then the real Yorin must be—
"Behind me!"
No Byakugan 360°, but Shisui still read it—he whipped around and fanned a handful of kunai—just a feint; the real kill was genjutsu.
Famous for Body Flicker or not, with Mangekyō open his deadliest move was still illusion—
Lock eyes and it's over.
But… miscalculated.
Behind him was a clone too.
"!"
Realizing the bait, Shisui moved at once—Body Flicker—gone.
Almost the instant he vanished, rubber-corded kunai stabbed into the ground where he'd stood.
By a hair. If he hadn't, that was game.
Even so, he'd lost the alpha strike, and his carefully placed tag traps were out.
"Pretty dirty, Yorin-nii."
Shisui couldn't help it—and immediately had to parry a relentless chase, dodging left and right on the back foot.
"This is the ninja way to fight."
Yorin didn't blush at the jab; he hit harder.
His left hand twitched—three more rubber-corded kunai lanced for Shisui, ramping the pressure up a tier.
Shisui gaped. "—What the—six-blade Manipulating Kunai?! You didn't go this hard on Obito!"
"Obito's not you. Don't sell yourself short, bro—"
"But if you're running six at once, your chakra really did jump."
"Next goal is ten thousand—and upgrade from kunai to swords. I'll call it Ultra: Ten-Thousand Swords Return—"
"—Excellent! I've got a new one too!"
In the next second, a crimson blade flash lit the shadowed canopy.
A flame slash—Fire chakra poured into the blade and loosed as a taijutsu-like strike!
It wasn't Yorin—it was Shisui.
Several trees went down in one cut—along with the rubber cords on Yorin's left-hand trio of kunai!
With seals blocked, ninjutsu off the table, and genjutsu being watched for, Shisui had unveiled new tech—cracking Yorin's finisher and dragging the lopsided fight back to even!
Yorin couldn't help praising him. "Impressive."
"I only invented it after being inspired by you, Yorin-nii."
They paused, facing off and prepping the next clash as they talked.
That flash-draw slash—speed, weight, precision—was all beyond expectation.
It resembled Yorin's chakra blade work, but with a much larger threat envelope—ranged "magic," not a melee enchant.
"Got a name?"
"Not yet—just thought it up recently. Any suggestions?"
"Mm… if it were me, I'd call it Sword Jump Blaze. Uchiha Style: Sword Jump Blaze."
"Sounds good. Let's go with that."
Shisui leaned forward, lowering his stance for a sprint.
Yorin raised an arm slightly, eyes glittering—scheming something.
After a short breather, they were ready to go again.
Yorin, versus Shisui with genjutsu, taijutsu, and ninjutsu firing on all cylinders—a conceptual monster in his own right.
Uchiha Yorin: "Odds aren't great. Doesn't matter."
Uchiha Shisui: "Want to surrender now, then?"
Uchiha Yorin: "Hah—don't be ridiculous."
On the "rid" of "ridiculous," Shisui vanished—Body Flicker!
In the same instant, dozens of Shisuis bloomed around Yorin, attacking from all sides—Phantom Body Flicker!
Some simply swung blades; others cast ninjutsu—Great Fireball, Phoenix Sage Fire, Dragon Fire…
C-rank on paper, but in Shisui's hands they hit hard, sealing every escape. Worse, even with the Sharingan, Yorin could only tell some fakes from real; a chunk of them he couldn't judge at all!
He also had to keep mental bandwidth for genjutsu, so he couldn't focus everything on parrying the barrage.
With that kind of disadvantage, an elite jōnin dies; even many Kage bow the knee—but that's fine.
Because Yorin had a new reversal ready.
Uchiha Yorin: "Shisui—did you really think I trained my left hand this dexterously just to juggle kunai?!"
Uchiha Shisui: "!?"
Under Shisui's widening eyes, Yorin's left hand clamped a second hilt—shing—another chakra blade flashed free—both swords whipping at extreme speed, crimson moonlight fanning out as they hewed Shisui's "perfect" assault to pieces—
This was Yorin's hidden trump—the finisher's finisher:
Uchiha Two-Sword Style: Dance of the Crimson Moon!
~~~
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