Chapter Text
All For One - My Hero Academia
The world was silent for the first time in what felt like an eternity. His lungs burned with a cold emptiness, each breath a pointless struggle. He was pinned beneath the weight of his own defeat, limbs weak, the very essence of his power torn away by that insufferable brat — the next Symbol of Peace.
All For One's mask was shattered, his blood streaming down his distorted visage. However, in his final moments, a sneer still curled on his lips. He was immortal. In death, too, his ideals would fester like rot within the heart of society.
"So, this is how it ends..." he thought, slipping into the nothingness with his consciousness.
But nothingness did not feel like death.
He was taken from the icy embrace of oblivion to a place where his essence felt as though it was being hauled off. Pain stopped, and weight left, and before he knew it, he was standing - whole, but helpless - in a vast shadowy room lit by an otherworldly, ambient glow.
Muzan Kibutsuji - Demon Slayer
This bite taste would prove to be his own flesh as Muzan was dispersed into ash. The harsh merciless bright solar light stripped him of what little flesh he had along with his essence and even ambition. He had existed fighting brutally for a thousand years tearing claw into perfection, immortality here he was falling apart through the gaze of dawn.
The faces of the demon slayers who had defeated him blurred into insignificance. He could not accept it; he would not accept it. As his consciousness faded, his eyes glared defiantly at the heavens.
"I will not vanish..." his mind screamed in fury.
Then, there was darkness. But it was not the darkness of finality.
A spasm of awareness jolted through him. Muzan felt solid ground under his feet. His body was intact, but he felt hollow, as if he had been deprived of the monstrous strength that once flowed through his veins. He opened his eyes to find himself in a huge chamber that was unfamiliar and disturbing.
Ryomen Sukuna - Jujutsu Kaisen
The battle was exhilarating in the rush of power and the thrill of destruction, though it was cut far too short. Itadori Yuji had been his vessel, now weakening. That brat was unyielding, and even with Sukuna's overwhelming malevolence, that wasn't anything that could go on without end. Cursed-energy chains were constricting around his soul, sucking him into the abyss.
For the first time in centuries, Sukuna felt something like vulnerability. The chains broke his control, and his form dissolved like smoke caught in a storm.
A cruel laugh escaped his lips as his world faded to black. "This isn't over..."
But it was not oblivion that greeted him.
He was given a floor under his feet, the solidity jarring. His eyes snapped open, and he stood up in an enormous room, his overpowering strength gone, but his predatory grin remained.
Chapter 1: The Monsters Assemble
The room was vast and infinite, the walls stretching into darkness. An eerie, oppressive silence hung in the air, broken only by the sound of footsteps. The three figures — each infamous in their own worlds — took in their surroundings.
All For One stood tall, his calculating eyes narrowing behind his scarred face. Muzan Kibutsuji's pale hand clenched into a fist, his crimson eyes gleaming with barely-contained rage. Ryomen Sukuna's lips curled into a feral grin, his eyes glinting with mischief and menace. Each of them exuded malice, although they were bereft of the power that made them gods among men. They looked at each other and then fell silent, but realization dawned.
Muzan sneered first.
"Who are you supposed to be?" His voice dripped with disdain as he sized up All For One and Sukuna.
All For One's mouth curled into a smile.
"I could ask you the same. It seems we're all guests in this strange purgatory."
Sukuna laughed, a dry, hollow sound.
"Well, isn't this a delightful little nightmare? I assume you both were powerful once?" He gestured mockingly. "Now look at us — just shadows in a cage."
The tension crackled between them, centuries of malevolence seething beneath the surface. None of them trusted the others, yet it was just beginning.
The silence was oppressive, the emptiness of the huge room swallowing everything except their voices. Three beings, each once an embodiment of terror and power, now stood face-to-face, stripped of their strengths but not of pride.
They studied each other with suspicion and disdain. Finally, it was Sukuna who broke the silence, his lips curling into a wicked smirk.
"Well, this is pathetic," he drawled, his crimson eyes glinting with amusement. "I didn't think I'd spend my afterlife in a room with a bunch of weaklings playing at being monsters."
Muzan's eyes narrowed, a low growl escaping his throat. "Watch your tongue, Abomination. I am Muzan Kibutsuji, the King of Demons. I've ruled for a thousand years and slaughtered countless hunters who thought themselves stronger."
Sukuna let out a dry, mocking laugh. "A king of demons? Oh no, I'm terrified." He spread his arms in mock surrender, eyes filled with condescension. "If you're a king, then the standards for demons must be laughably low. Tell me, do your little minions cower at the sight of pitchforks and garlic too?"
Muzan's pale face contorted into a feral snarl, but he didn't get to launch himself because a calm voice cut across his-quiet and thoughtful.
"How predictable," All For One said in smooth tones. His face had a calm mask, even with his broken features partially masked behind the shattered visor of his mask. He adjusted his stance, and his voice dripped with measured authority. "We stand on unknown ground, without our powers, and you can only hurl insults like a pair of squalling children."
He bent his head. "My name is All For One. I once was the world's creator of social turbulence. The ruler of the Quirks- the abilities that set a course for the future in my world." His gaze fell upon the two. "Perhaps if we are sharing our data we'll know where we are -- and who did this thing."
Sukuna laughed. "All For One? What an impossibly pretentious title." He rolled his eyes. "And what do you mean by a Quirk? Sounds like something a kid would call a party trick."
Muzan sneered. "Indeed. A power called a 'Quirk'? How quaint. I controlled a force that transcended mortality itself. The blood of demons flowed at my command."
All For One curled up his lips into a hard smile. "And what did that power win for you? A place at this table with all the rest of us."
Muzan's gaze went black, but he kept his mouth shut past the jab. "Pffft. As I've said before, my name is Muzan Kibutsuji: King of Demons. My power made me the apex predator, perfect. I was immortal. I was unstoppable."
A scoff interrupted him. Sukuna's grin spread wide, his teeth glinting like a predator about to devour prey. "King of Demons? How quaint. I suppose in your pitiful little world, that title carries weight. But in my world, the title I hold is far beyond your comprehension."
He stepped forward, his presence exuding smug superiority. "I am Ryomen Sukuna, the King of Curses. My power was so vast, so incomprehensible, that even death couldn't erase me."
He leaned in closer, his eyes gleaming with sadistic glee. "You, Muzan, are nothing more than a glorified leech. And you, All For One, sound like a thief who thinks he's a god. Compared to me, you're both mere insects buzzing in my ear."
All For One did not bat an eyelash. His nonchalant tone was still unshaken. "Confidence without power is just noise," he replied coldly. "We're all equal here now — stripped of what made us gods in our own worlds."
Muzan crossed his arms, eyes steaming with barely-held rage. "We may be powerless for now, but that doesn't mean we have to listen to this insolent fool."
Sukuna laughed again, this time low and evil-sounding. "Oh, please. I could crush the two of you with a flick of my finger if I had even a fraction of my power. But don't worry, this little prison won't hold me forever. I'll be back on my throne soon enough."
The three fell silent again, each trapped in their own swirling storm of pride, rage, and ambition. The room seemed to tighten around them, the oppressive emptiness amplifying their frustrations.
All For One exhaled slowly, his mind already ticking like a clockwork machine. "For now, let's focus on why we're here — and who dares to imprison the likes of us."
Muzan's eyes flickered with agreement, though his jaw was set in frustration. "Agreed. Once I find whoever did this, they'll beg for death."
Sukuna's grin sharpened. "Fine. But when we find them, I get to kill them first."
Their uneasy truce hung by a thread, their egos clashing even in cooperation. This mysterious prison had brought together monsters from different worlds, but the question lingers: Why were they here, and who was pulling the strings?
--- To be continued.