After delivering Zenitsu and Kyojuro to Kaigaku, Sasuke did not pause for an instant.
His Rinnegan spun rapidly, and its immense ocular power enveloped the entire Infinity Castle in an instant.
In his eyes, this labyrinth built from the Demon King's will was no longer a three-dimensional structure, but a complex data model composed of countless spatial coordinates and streams of energy.
The intelligence he had previously extracted from demons' souls through the Human Path now became the most precise map.
Every transformation of the Infinity Castle, every distortion and reconstruction of its space, originated from a single core.
A woman holding a biwa-the new Upper Rank Four, Nakime.
She was the heart of this castle, Muzan Kibutsuji's greatest asset in controlling the battlefield.
As long as she existed, the swordsmen of the Demon Slayer Corps would be endlessly separated, then defeated one by one.
But now, that asset would become Muzan's death warrant.
Sasuke's gaze pierced layer upon layer of distorted space, locking onto an isolated room that seemed randomly positioned yet remained at the center of every battlefield.
Nakime sat cross-legged, plucking her strings without expression. With each pluck, several rooms flipped and shifted, leaving the members of the Demon Slayer Corps dancing in the palm of her hand.
It did not take an army to deal with her.
Sasuke vanished from where he stood.
No, he had not vanished.
He had activated Amenotejikara.
He switched places with a burning roof beam falling in the distance.
The next instant, he switched places again with a wood splinter that had been shattered by the wind of a sword strike and was floating in midair.
An instant later, his figure appeared behind Nakime like a phantom, without a sound.
Twang!
Nakime seemed to sense something and fiercely plucked her biwa.