The air in the B5F station reached a breaking point.
Sukuna, annoyed by the persistent "interference" of these two outsiders, laced his fingers together.
He didn't care that he was currently at a fraction of his full power; his ego demanded the immediate erasure of the boy who had dared to digest his soul.
"Domain Expansion: Malevolent Shrine."
The world didn't just change; it was replaced.
A shallow pool of dark water spread across the platform, and a grotesque, open-mouthed shrine rose behind Sukuna.
The atmospheric pressure became a physical weight, a precursor to the thousands of invisible slashes about to shred everything within the radius.
"Okarun! It's coming!"
Momo yelled. She didn't retreat. Instead, she pushed her psychic limits to the absolute brink.
She reached out into the very fabric of the Domain, her hands glowing with a blinding pink light.
She wasn't just filtering the ambient energy now—she was tearing the Cursed Energy directly out of the Domain's foundation and slamming it into Okarun.
"Give me... more!"
Okarun roared.
With Momo acting as the ultimate conduit, Okarun didn't just stand his ground—he became a vacuum.
As Sukuna's Domain attempted to manifest its "Cleave" and "Dismantle" sure-hit effects, Okarun's Phase-Turbo engine accelerated to a speed that bypassed the concept of a "hit."
He lunged forward.
Because he was absorbing the very energy Sukuna was using to build the Domain, the "Shrine" began to flicker and crack.
"I can see it!"
Okarun's eyes were a brilliant, burning violet.
"The seam of the Domain! Ayase-san, now!"
Momo unleashed a massive psychic shockwave, stabilized by the purified Cursed Energy.
"GO, YOU MORON!"
Okarun turned into a crimson-violet comet.
He didn't just move through the Domain; he phased through the invisible slashes, his "Cutting Phase" aura clashing against Sukuna's own techniques.
Because Sukuna was not yet fully awakened and his vessel was fighting him from the inside, the King of Curses stumbled.
Inside the mind-space, Yuji Itadori was clawing at the throne, dragging Sukuna's consciousness back into the depths.
"You... brat...!"
Sukuna growled, his four eyes flickering.
Okarun arrived.
He didn't use a punch; he used a Phase-Impact.
He slammed his hand directly onto Sukuna's chest, where the "heart" of the Domain was anchored.
"Ahhhhbbb!"
Okarun yelled.
At that contact, the absorption reached its peak.
Okarun didn't just take the power; he used the Phase Devil's spatial manipulation to "pull" the energy of the Malevolent Shrine into himself.
The shrine behind Sukuna began to dissolve into digital-like static.
The "Cutting Phase" energy erupted in a 360-degree dome of violet light, shattering the barrier of the Domain from the inside out.
The B5F platform reappeared in a thunderous explosion of dust and debris.
The Domain was gone.
Yuji slumped to his knees, the black markings receding from his face as he gasped for air, finally regaining control.
Sukuna's presence retreated into a hateful, low simmer.
Okarun stood over him, his body glowing with an almost celestial violet light.
He was overflowing with power—the combined essence of the Turbo Granny, the Phase Devil, and a significant portion of Sukuna's refined energy, all purified by Momo's touch.
"W—We did it,"
Okarun whispered, his voice echoing.
He turned back to Momo, who was panting, her nose bleeding from the strain of the purification.
"Okarun..."
She smiled weakly, wiping her face.
"You're glowing like a cheap neon sign. It's tacky."
Gojo Satoru stepped out from the shadows of a pillar, clapping slowly.
He looked at the shattered floor, the defeated Curses who had fled the radius of the clash, and the boy who had just "eaten" a Domain Expansion.
"Well,"
Gojo said, his voice full of genuine wonder.
"I think that's more than enough proof. You've got enough spatial energy in you now to jump all the way to the moon and back."
He walked up to them, his hand resting on Okarun's shoulder.
"Ready to find your way home? I think you've done enough for our world for one night."
Okarun looked at Momo, who nodded firmly.
He reached out his hand, and for the first time, he didn't just feel for a "frequency"—he saw a clear, golden line cutting through the multiverse, leading straight back to the Kamigoe City shrine.
"Ayase-san,"
Okarun said, his voice full of warmth.
"Let's go home."
With one final flash of violet and pink light, the two of them vanished, leaving the Shibuya station silent for the first time that night.