Goodbye, Muzan

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Crack! Crack!

With the seals undone, the restraints on Kibutsuji Muzan shattered, dissolving into nothingness. The prison doors disintegrated as well, vanishing into the void.

Moments later, Muzan stood before Akira, a dark grin spreading across his face.

"I... I've finally escaped that accursed seal!!"

Muzan exclaimed with a mix of rage and euphoria. The years spent sealed away had pushed him to the brink of madness. His attempts to erode Akira's will had, in turn, caused significant erosion of his own.

"Not only that," Muzan seethed, "that wretch must have tampered with the seal to constantly torment me before!"

"HAHAHAHAHAHA!"

"I, Kibutsuji Muzan, have finally broken free from that hellish prison!"

As his triumphant laughter echoed, Akira's calm voice interrupted him. "Enough. If you're alive, leave. This is my body—you're not welcome here."

Muzan's laughter stopped abruptly as he locked eyes with Akira. "Leave? To what—certain death?"

"Do you think I'm unaware of your little scheme? The moment I step outside, you'll expose me to sunlight and obliterate me."

Then, a wicked grin appeared on Muzan's face. "But now I see… the very thing I've sought for centuries is right in front of me. Do you think I'll just walk away?"

Muzan's quest for immortality was always hindered by the sun, a fatal flaw he sought to overcome. He had spread his blood far and wide, creating demons in the hope that one of them would evolve to withstand sunlight. If he could devour such a being, he would achieve perfection.

And now, standing before him was Uchiha Akira, a perfect specimen—a being who had consumed his blood and yet could walk in sunlight without issue. Akira's very existence was the answer Muzan had sought for centuries.

Moreover, Akira possessed extraordinary power. Muzan knew that devouring him would grant him eternal life and unparalleled strength.

But here, in this realm within Akira's body, the battle would hinge on spiritual willpower—an area where Muzan, with his centuries of life, considered himself invincible.

Swish!

Muzan's arm extended rapidly, transforming into a whip aimed straight at Akira's eyes.

Snap!

Just as the attack was about to land, Akira caught it effortlessly.

"Predictable. I knew you'd do this. But don't think I released you out of kindness. Since you've made the first move, I won't hold back either."

With a powerful tug, Akira pulled Muzan toward him.

"What?!"

Muzan, overwhelmed by the force, was yanked off balance and sent hurtling toward Akira.

BAM!

Akira's punch exploded against Muzan's head, causing it to burst like a watermelon.

Splat, splat!

In mere moments, Muzan's neck regenerated, and a new head emerged.

"You... Impossible!" Muzan's disbelief was evident.

In this domain, Muzan believed himself invincible. Yet, Akira had just shattered his head with ease.

"Nothing impossible about it," Akira replied. "When I was twelve, I sealed you away. Beating you now is hardly a surprise."

"And don't think the memories you've seen are real. What you've witnessed is merely what I allowed you to see."

As an Uchiha, Akira excelled in illusions. While he couldn't cast Infinite Tsukuyomi like Kaguya, ensnaring Muzan in a personal genjutsu was child's play.

"You mean... everything was fake?!"

Akira smirked, licking his lips. "I know you want to devour me. The feeling's mutual—I want to devour you too."

"Let's end this. If you can't kill me, you'll never leave this prison."

"Then I'll kill you and take everything you possess!" Muzan's voice was icy as he activated his full combat form. Nine tendrils sprouted from his back, and eight more extended from his legs—his ultimate battle state.

Though he suspected Akira had ulterior motives, Muzan had always intended to devour him. Now, their battle began within this mental realm.

Akira channeled his Conqueror's Haki, attempting to imbue his limbs with it.

In this spiritual world, Conqueror's Haki was his only weapon. The recent mastery of this power was precisely why Akira dared to confront Muzan here.

Initially, controlling it was challenging, but as the fight progressed, he grew more adept.

Boom!

With a devastating punch, a massive shockwave erupted from Akira's fist.

Crash!

"ARGHHHH!!"

Muzan screamed in agony as his body exploded.

But almost instantly, he regenerated.

"What is this power?!" Muzan's voice trembled with fear.

It was a sensation he hadn't felt since his battle with Yoriichi—an overwhelming threat to his very existence.

"It's the power that will kill you," Akira replied coldly.

Boom!

Another punch, imbued with Conqueror's Haki, struck Muzan.

The sheer force left him nowhere to hide.

"AAAAHHHH!"

Muzan's body exploded again, and he howled in pain as the shockwaves wreaked havoc.

Each time he regenerated, Akira attacked, wearing him down.

Time passed. Muzan's once-indomitable body could no longer recover. Emaciated and frail, he resembled a withered husk.

Akira smirked as he delivered the final blow.

"Goodbye, Muzan."

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