A gigantic black-red energy sphere, nearly twenty meters in diameter, gathered in Isshiki's hand.
"Black-Red Rasengan !"
Isshiki hurled the massive sphere toward Nagi.
At the same time, the black and white Truth-Seeking Orbs in Nagi's hands finished merging, forming the shape of a Yin–Yang symbol.
"Yin–Yang Release: Aurora."
From the spinning Yin–Yang symbol erupted an enormous rainbow-colored radiance.
Brilliant light burst across the sky. The colorful glow enveloped the black-red energy sphere, and even the distant horizon was dyed in vibrant rainbow hues.
Hokage Tower
Tsunade had just dispatched Team Kakashi to assist Sunagakure in capturing Mukade. She was currently reviewing documents.
Suddenly, the desk in front of her lit up.
No—
The light was coming from behind.
"Lady Tsunade!"
Shizune pointed out the window in shock.
Tsunade turned her head and widened her eyes.
The distant sky had transformed into a fantastical rainbow display, like a massive aurora.
"That direction…"
Her expression changed.
"Damn it—that's where Naruto and the others went!"
Sunagakure
Gaara also stared in astonishment at the radiant sky.
Following the direction of the colorful light, he muttered with concern:
"Kankurō… be careful."
Not only Konohagakure and Sunagakure—
Even nearby countries witnessed the rainbow-colored sky.
Many believed it to be a divine miracle descending upon the world.
Battlefield
Under the overwhelming rainbow light, Isshiki's black-red energy sphere began to gradually disintegrate.
"What?!"
Isshiki panicked and poured more chakra into it.
The sphere briefly stabilized—
—but compared to the immense aurora, it looked tiny and insignificant.
In the end, the black-red sphere completely vanished within the rainbow light.
Isshiki had no time to react.
The aurora swallowed him whole.
Within the light, cracks began forming across Isshiki's body.
From the cracks leaked brilliant rays, as if his body were about to shatter.
"How could this happen?!"
"AAARGH!!"
With a final scream—
Isshiki's body completely shattered, breaking into countless fragments.
Nagi stepped forward and pressed his index and middle fingers together, writing characters in the air:
"By imperial command, gods and spirits arrive here."
"Spirit Talisman Seal."
A yellow talisman with red inscriptions appeared and stuck to Isshiki's shattered remains.
Countless sealing symbols spread out from the talisman, quickly enveloping the fragments.
At that moment, Isshiki's soul attempted one final gamble.
He planned to secretly plant a Karma mark on Nagi while Nagi was unaware of the Ōtsutsuki's backup methods—so he could resurrect later and seize Nagi's body.
But suddenly—
He couldn't move.
"What?!"
"What is this?!"
Nagi walked over and smiled at Isshiki's shattered remains.
"Mr. Isshiki, if I let you escape like this, it would be quite troublesome for me."
"Even if your body is in pieces, it doesn't stop us from researching it."
"I'll study your body together with others."
"Rest assured. Your contributions to the scientific world will be remembered by future generations."
"You bastard!! How dare you!!"
Isshiki struggled in fury.
"What kind of seal is this?! Why can't I break it? And why… why do I feel fear?"
"No… that's impossible! I shouldn't feel fear!"
Now in soul form, Isshiki couldn't even tell whether Nagi could see him or not.
But trapped within the seal—
He couldn't escape.
Nagi then took out a sealing scroll and sealed Isshiki's remains inside it.
Looking up at the sky filled with aurora light, Nagi sighed.
"As expected… techniques based on scientific principles are much more interesting."
His technique "Yin–Yang Release: Aurora" was based on the natural aurora phenomenon.
Natural energy replaced atmospheric gas molecules.
Yin–Yang chakra particles replaced charged particles.
When the two collided, the chakra particles were hyper-excited, releasing enormous energy.
That energy was then emitted in the form of radiant light.
"And there's one more thing."
Nagi pointed a finger toward the distance.
A high-pressure water jet shot from his fingertip.
Outside Rōran
Mukade had been approaching the ruins when he was overwhelmed by the terrifying chakra from earlier.
His breathing became difficult, and his legs trembled uncontrollably.
Just as the pressure disappeared—
A water jet pierced straight through his heart.
Mukade didn't even realize what happened before collapsing to the ground.
The unfortunate Mukade died outside Rōran without ever entering it.
Looking at the Dragon Vein, which had fallen back into slumber below, Nagi temporarily sealed it as well.
Taking it away might destabilize it.
If the Dragon Vein lost control or dissipated, it would be a disaster.
"I'll research it later with Orochimaru."
Nagi used the Body Flicker Technique to arrive near Mukade's corpse.
Suddenly—
An overwhelming wave of exhaustion crashed into his mind.
"Ugh…"
"Did I overuse my mental energy?"
After the long journey through the Dragon Vein, the battle with Isshiki, forcibly using natural energy, and sealing the Dragon Vein—
Nagi felt extreme fatigue.
His vision blurred.
At that moment, he vaguely saw several figures rushing toward him.
After sensing their chakra signatures, Nagi smiled faintly.
Then—
He collapsed.
But…
At the moment he fell, Nagi landed in a familiar embrace.
By then, he had already completely lost consciousness.
Chat Reactions
Jiraiya:
"Phew… that Ōtsutsuki Isshiki is finally dealt with."
Tsunade:
"Well done, Nagi."
Ōnoki:
"Great! Nagi can now defeat an Ōtsutsuki."
Hiruzen Sarutobi:
"Still, let's not celebrate too early. Other Ōtsutsuki may descend."
Fourth Raikage (A):
"Yeah. I believe Brother Nagi will defeat them too."
Mei Terumi:
"I agree. But that Aurora technique looked so romantic."
Tsunade:
"It really was beautiful."
Kurenai Yūhi:
"I'd love to learn a technique like that."
Orochimaru:
"That technique likely uses scientific principles."
Nagi:
"Correct. It's based on the principle behind the aurora."
Kaguya Ōtsutsuki:
"Isshiki, you really did fall. Not even a complete corpse remains—your soul is imprisoned as well."
Isshiki Ōtsutsuki:
"Hmph. Don't celebrate too soon. Isn't your third son planning to unseal you?"
"I'm quite curious to see Nagi beat you up when that happens."
Kaguya Ōtsutsuki:
"You—!"
Isshiki Ōtsutsuki:
"Oh, and don't forget. The Ōtsutsuki main family may arrive someday."
"Even if Nagi spares you, they certainly won't."
Kaguya Ōtsutsuki:
"..."
She suddenly realized something.
She had forgotten about that possibility.
Black Zetsu:
"..."
So… should I still rescue Mother or not?
Mukade:
"I just died like that?!"
Fourth Raikage (A):
"Who do you think you are? If you're dead, you're dead."
Naruto Uzumaki:
"But… whose arms did Nagi collapse into?"
Kakashi Hatake:
"Couldn't see clearly. Probably someone from our team… or Kankurō's group."
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