With his final roar, the entire throne, along with his enormous apparition, dissolved into a mass of writhing, pitch-black flesh. The flesh swelled violently, instantly becoming a colossal monster that blotted out the sky and sun. The monster had no fixed shape, only countless gaping mouths filled with hatred and curses, and thousands upon thousands of flailing, blood-red tentacles.
This was the final form of Muzan's thousand years of resentment and obsession.
He would utterly devour and digest these two souls that dared to defy him, leaving not even a trace of their existence!
"ROAR!"
The enormous flesh monster surged toward Sasuke's and Tanjiro's souls to devour them, bearing enough malice to corrupt the entire mental world.
"Susanoo."
Sasuke's soul form had an icy gaze, and a vast surge of chakra-infused will soared into the sky. A purple, translucent Susanoo skeleton instantly formed, rapidly covering itself in sinews and armor. Though only in soul form, this Susanoo still radiated the majesty of a god.
The enormous purple chakra sword swung at the flesh monster, severing dozens of incoming tentacles. Yet the moment those tentacles struck the ground, they turned into more flesh and merged back into the monster's body, regenerating without end.
In a purely mental world, the effectiveness of physical attacks was reduced to a minimum. What competed here was the essence of one's will.
Sasuke's will was "protection," the resolve to cut down every threat. His Susanoo could hold this amalgamation of "hatred" and an obsessive "will to survive" at bay, but could not easily destroy it completely.
Just then, Tanjiro's soul moved.
Rather than unleashing tremendous power as Sasuke had, he closed his eyes and drew a deep breath.
When he opened his eyes again, what radiated from him was no longer fierce fighting spirit, but a