"Welcome to my world."
Jogo stood atop the volcanic peak constructed from cursed energy, looking down at the three people who appeared as small as ants.
Molten lava flowed all around, and the air was thick with the suffocating stench of sulfur.
This was Domain Expansion: COFFIN OF THE IRON MOUNTAIN.
"Die!!!"
Jogo gave them no room to breathe.
With his roar, countless fissures split open across the surrounding rock walls.
*Rumble!*
Scalding lava surged like a tsunami from all directions, sealing off every possible escape route.
There were no blind spots.
Under the domain's enhancement, this lava didn't just possess extreme heat; it carried a curse capable of eroding the soul itself.
"Waaaah! We're really done for this time!"
Yuji Itadori watched the overwhelming wave of lava and clung tightly to Satoru Gojo's back.
"Sensei! Think of something, fast!"
Faced with a desperate situation that would instantly kill an ordinary Grade 1 sorcerer, Satoru Gojo remained unhurried.
He even had the leisure to reach out and tidy his hair, which had been ruffled by the scorching wind.
"Don't panic, Yuji."
Gojo's voice remained clearly audible despite the deafening roar.
"There are many ways to counter a domain."
"The simplest and most direct way is to counter a technique with another technique."
"Or you can do it like me."
Gojo smiled slightly, a hint of amusement flashing in his azure Six Eyes.
"Although I wanted to teach you how to use a Simple Domain or Domain Expansion to fight back..."
His gaze shifted to Yoru, who stood beside him.
The youth stood there quietly.
Facing the lava tsunami that was about to swallow everything, he showed no panic or fear.
Even his stance while holding his blade remained unchanged, though his red eyes had become different now.
"It seems Yoru has his own ideas."
Just as Gojo finished speaking, Yoru moved.
No. To be precise, his aura changed.
*Whoosh—* A breath of scalding white vapor slowly escaped Yoru's mouth.
Total Concentration: Thunder Breathing.
*Crackle...* Fine golden arcs of electricity danced around Yoru's body, frantically stimulating every muscle fiber.
He utilized the extreme speed of Thunder Breathing paired with the explosive violence of Sun Breathing.
"Sure-hit, huh?"
Yoru murmured softly.
His legs bent slightly, and the ground beneath him instantly shattered, unable to withstand the terrifying explosive force.
"As long as I sever the cause before it hits..."
*Clang!* SHIRANUI was unsheathed.
This strike fused the extreme speed of lightning with the scorching heat of the sun.
Thunder Breathing, First Form: Thunderclap and Flash... overlaid with Sun Breathing, Sixth Form: Burning Bones, Summer Sun!
*Boom!*
Yoru's figure instantly transformed into a spiral of gold and red lightning and fire, charging into the lava tsunami at a speed that surpassed the limits of the human eye.
Without the guidance of the Transparent World, he relied on a swordsman's super-intuition to perceive the source of the threat.
Within Gojo's Six Eyes, Yoru was like a violent tornado, forcibly tearing a hole through the airtight domain.
Those cursed energy nodes that were supposed to be 'sure-hit' were shredded by the terrifying high-speed slashes just an instant before they could take effect.
A second later.
A bizarre sight occurred.
The surging, unstoppable lava tsunami suddenly froze less than a meter away from the trio.
It was as if a movie being played had been paused.
Then, *crash!*
The lava composed of cursed energy lost its support and instantly collapsed, turning into countless harmless sparks that dissipated into the air.
The domain's sure-hit effect had failed?!
"What?!"
Standing atop the volcano, Jogo's eyes nearly bulged out of his head.
He could clearly feel his connection with the domain being severed in that instant!
Like a hard stone jammed into precision gears, the entire operation of the domain suffered a fatal stall.
"This... this is impossible!!!"
Jogo roared in terror.
'Did he... sever the flow of the domain?'
Seeing this, the smile on Gojo's face deepened.
"What an utterly unreasonable style of swordsmanship."
"However, since you've bought me some time..."
Gojo slowly raised his hand, crossing his index and middle fingers.
It was a gesture filled with divinity.
"As a return gift, let Sensei show you all what true invincibility looks like."
An indescribable, terrifying pressure descended instantly.
If Jogo's domain was a scorching hell, then Gojo's domain was the vast, boundless universe.
"Domain Expansion..."
"UNLIMITED VOID."
*Hum—* The world changed.
It was no longer lava or a volcano, but a strange space where pure white and pure black intertwined.
Here, everything was static, yet everything was infinite.
"This is..."
Jogo felt as though his brain had been stuffed into a high-speed centrifuge.
Countless pieces of information, countless sensations, and the infinite feeling of being alive flooded into his mind in an instant.
He saw everything, yet could see nothing.
He heard everything, yet could hear nothing.
His brain trembled; his thoughts stalled.
"This is the inner side of the Limitless."
Gojo walked easily toward the completely frozen and immobile Jogo, as if looking at an exquisite specimen.
"Because the amount of information received is so massive, you can't do anything at all."
"Within this domain, every living being—except for myself and the person I am touching—will fall into this state of paralysis."
While explaining, Gojo reached out and grabbed Jogo's head.
At this moment, Jogo was like a puppet with its strings cut, entirely at Gojo's mercy.
*Crack.*
Gojo gave it a casual twist, plucking Jogo's head right off his shoulders.
"Alright, Special Grade cursed spirit successfully captured~"
As the domain deactivated, everyone returned to the highway that had been destroyed beyond recognition.
Gojo casually tossed Jogo's head onto the ground and turned to look at Yoru, who was slowly sheathing his blade.
The golden electrical arcs on the youth had dissipated, and he had returned to his usual harmless appearance.
But Gojo knew.
In that brief moment, the reaction speed and intuition displayed by this youth had already transcended so-called grades.
"Hey, Yoru."
Gojo leaned in toward Yoru, his azure eyes filled with curiosity.
"That move just now..."
"How did you do it?"
"Being able to precisely sever the cause at such extreme speed... that's not something achieved through speed alone."
Yoru blinked, seemingly pondering how to explain.
After a long while, he said seriously:
"It's just like breathing."
"As long as I can feel its flow, I can find the gap."
"And then..."
"Swing the blade and sever it."
Gojo froze for a moment, then burst into a fit of laughter.
"Hahahaha! Just like breathing?"
"That really is an answer one can't argue with!"
He patted Yoru's shoulder, the look of admiration in his eyes clear.
"It looks like the upcoming Goodwill Event..."
"Those old fossils at the Kyoto school are going to have a real headache."
Yoru didn't say anything. He just silently picked up Jogo's still-smoking head, examining it as if it were a novelty soccer ball.
Meanwhile, Jogo—now reduced to just a head—remained immobile, but a final sliver of consciousness flickered within him.
As he looked at the red-eyed youth staring back at him, a surge of unprecedented terror welled up from deep within.
That gaze wasn't looking at prey; it was looking at a dead object.
'This kid named Yoru...'
'He is absolutely a monster even more dangerous than Satoru Gojo!!!'