If he no longer had a whole bunch of subordinates—no more loyal comrades burning with the same desire for revenge—could Sky Ninja still even be called Sky Ninja?
Reviving Zero-Tails, rebuilding the flying fortress, getting it airborne… none of that could happen without those researcher underlings helping him.
So when Uchiha Yorin wiped out Sky Ninja in one stroke, Shinnō's ambition and life's work were obliterated along with them.
Thinking about how everything he'd devoted his life to had just gone up in smoke, even a hardened schemer like Shinnō couldn't help but bleed tears.
"You… you bastard, you…!"
Uchiha Yorin: "Is it really that serious? You're that mad?"
"Unforgivable! Unforgivable! Unforgivable!!"
"You were planning to destroy Konoha. Konoha destroying you is just fair play. Don't be such a hypocrite for a ninja."
…
Yorin felt his logic was perfectly sound. Shinnō very clearly did not.
In the next instant, Shinnō lunged at him. At the same time, his aura surged—swelling, exploding, skyrocketing.
That kind of raging power, Yorin knew well. It even felt a bit nostalgic.
"Ah, Eight Gates huh. So you learned that too… oho? You opened all eight in one go? That's a bit much, isn't it?"
Even Uchiha Yorin's eyes lit up when he saw Shinnō turn into a demon-king–looking monster: skin entirely blood-red, like Akuma.
Yeah, that forbidden technique.
As a boss-tier enemy and a medical ninja, Shinnō did have some real cards up his sleeve.
Medical Forbidden Technique: Body Activation — forcing the body's cells into high activity, dramatically boosting physical performance.
Medical Forbidden Technique: Body Regeneration — even if the body is torn into pieces, it can knit itself back together.
Those two terrifying forbidden techniques gave him near–undead regenerative power. That's also why his fake death in the original story was so convincing.
But even with those, they still weren't enough to withstand the strain of the fully opened Eight Gates.
In canon, he upgraded Cellular Activation and Regeneration, then borrowed Zero-Tails' chakra, creating the absurd technique "Body Revival," which let him open all Eight Gates and not immediately drop dead.
Right now, he hadn't restored Zero-Tails, so he didn't have Body Revival.
That meant that even with his healing tricks, his body couldn't withstand the damage of Eight Gates.
In other words:
He had no intention of surviving this. He was going all in, trying to drag Uchiha Yorin to hell with him.
Uchiha Yorin: "Good. If you really have what it takes, then come and try!"
He was excited, honestly.
Even if this wasn't Might Guy, Eight Gates was still Eight Gates. To go all out against someone who'd opened the full set—that's the kind of thing a taijutsu fighter lives for.
"Uchiha Yorin! I'm gonna take you down with me!!"
"Then come on. Show me what you've really got!"
They roared and clashed, fists against twin blades, crimson Eight Gates against the blue-violet glow of Takemikazuchi. Flying tech versus Susanoo's phantom wings.
Like thunder and wildfire colliding, their blows crashed together with the force of giant bombs, super artillery shells—almost like nukes going off in mid-air.
In terms of flash and spectacle, it was only slightly below a Tailed Beast Bomb. In terms of actual destructive power and lethality, it was even greater.
So this is the Eight Gates…
"Excellent. Fantastic! This technique, this raw force—it's way stronger than that loser Fūka Arashi."
Yorin was completely hyped.
So they kept going. And going. And going.
Steel and flesh. Lightning and rage. With every exchange they threw out their strongest blows without the slightest restraint, no finesse at all—just pure stats smashing against stats.
"AAAHHH!!"
"HAHAHAHA!!!"
"Damn youuu!!"
"HAHAHAHAHAHA!!!"
"Why?! Why, why, why?!"
"HAHAHAHAHAHA!!!"
…
The fight raged on and on. At first, Shinnō could just barely go blow for blow with Yorin.
But as time passed, his composure cracked. He grew more impatient, more frustrated—and more afraid.
I've already burned my life away to fight you. Why can't I beat you? Why is this still a stalemate?!
Shouldn't he, having opened all Eight Gates, be overwhelming Yorin, smashing him to his knees in a storm of blows?
Uchiha Yorin: "The reason is very simple."
While Shinnō boiled with rage, Yorin suddenly stopped laughing and calmly answered his unspoken question.
Shinnō: "…"
Hearing that, Shinnō froze for a moment, completely thrown off balance.
What is this guy even talking about?
I'm using the Eight Gates—literally burning my life force and fighting you for real—and you're calm enough to "analyze" me in the middle of the fight?
Do I look that much like a joke to you, Uchiha Yorin?!
Driven by humiliation and fury, Shinnō lunged again, fists flying. This time, though, Yorin didn't meet him head-on. Instead, he shifted into pure finesse—coiling, redirecting, slipping past, cutting in.
It took only an instant. Guided by his Sharingan, he shredded Shinnō's form and balance, severed the flight apparatus, and sent him plummeting to the ground.
Shinnō slammed into the earth like a broken kite, head spinning and limbs refusing to cooperate.
He wasn't dead—not yet. But the outcome was already decided.
He stared up at Yorin, shock still etched into his face, while Yorin landed and looked back at him with a slightly exasperated expression.
Uchiha Yorin was even stronger than he'd imagined, and the combined speed of Lightning Body Flicker plus Flying Thunder God was even more absurd than expected.
But the real question burning in his mind was: why? Why?
"Because I wanted to experience it for myself."
Yorin answered calmly.
"The Eight Gates are a Konoha technique, but hardly anyone in Konoha actually trains them. And the few who might are comrades. I'm not going to ask my own people to burn their lives just to spar with me.
So I've always wanted to see for myself what Eight Gates could truly do.
And the result is… honestly disappointing."
Yorin sighed.
"Of course, I don't mean the Eight Gates are disappointing. You are.
How long has it been since you last fought a real opponent? Or really, have you ever fought someone strong before?"
He looked at Shinnō with genuine "hate the iron for not becoming steel" eyes and hit him with that question.
Shinnō: "…"
He didn't answer, but his eyes already gave everything away.
Yeah. The guy's actual combat experience was trash.
"And you haven't seriously trained in years, have you?"
Shinnō wanted to deny it, to say that he had trained seriously. But under Yorin's gaze, he just… couldn't form the words.
"If we lay it out plainly," Yorin went on in a helpless tone, "your body is old and degraded (you don't have a true age-reversing ultimate jutsu), your skills and experience are both lacking.
You're simply not a proper close-combat fighter.
You used medical forbidden techniques to buff your body and force it into an Eight Gates state for a while…
…but all you've got is raw stats and no technique. Even your reaction speed is lagging behind. You've completely wasted the potential of the Eight Gates."
"You… you—YOU—!"
Being read to filth by your mortal enemy, and worse, hearing him say things you know are true… that kind of shame made Shinnō's face burn red. He stared, speechless, shaking with fury.
This bastard isn't just beating me. He's trying to crush me mentally too!
"My ambition, my dream, my everything—everything I've worked for—you destroyed all of it!"
Uchiha Yorin: "Correct. Because I'm stronger than you, smarter than you, and my vision is broader than yours."
"You want to conquer the ninja world too?"
"No," Yorin said calmly. "I want to build a world without war, without hunger—a world where everyone can live in happiness."
"Ke… keh keh…"
Hearing that, Shinnō started to laugh.
"It does sound grander than my goal."
He ducked his head, as if thinking deeply.
An optimist watching from the outside might've believed he was reflecting, being swayed, maybe even considering joining Yorin.
But no.
Yorin walked over with a mild smile. "So, you—"
He got just close enough, and Shinnō suddenly exploded into motion again, lunging with everything he had left.
"I don't care what your dream is! Die with me!!"
The next second, Yorin simply cut off both of his arms—then pierced his heart and his throat.
With his body devastated in three vital places, Shinnō collapsed to his knees. His eyes still locked onto Yorin, full of wordless accusation, asking why.
Yorin: "I never believed you. And I never had any intention of recruiting you."
"Also, I already said naming a Tailed Beast 'Son Goku' was presumptuous and annoyed me. Then you calling yourself 'Shinnō' annoyed me even more."
"Wh… what… do you… mean…?"
He stared in utter confusion—but Yorin didn't bother to explain. The man fell forward into his own blood, his life and forbidden techniques finally unable to save him.
Sky Ninja, as of that moment, were wiped out to the last.