Five hundred years ago, the name Gu Jue was a death sentence. As the Heavenly Demon Ancestor, he had carved his scriptures into the mountains of the North and painted the Southern seas red with the blood of righteous Saints. He was a god of malice who sat upon a throne of obsidian, watching the world tremble at his whisper. But even gods can be bored, and even ancestors can be betrayed by a disciple's well-placed spike through the heart.
Now, the Heavenly Demon Ancestor was a "rat."
He woke in the body of a fourteen-year-old boy, a "Sin-Eater" for the Iron-Blood Sect. His current existence was a living insult, a human sponge used to absorb the rotted, chaotic Qi of dying martial artists so they could pass away in peace. His skin was the color of wet parchment, and his eyes were filmed over with milky cataracts, blinded by the very "sins" he was forced to consume.
"Touch him, rat," a voice hissed from the doorway of the stone cellar.
Sect Physician Kang stood there, a silk cloth pressed to his nose against the stench of the "Sanctuary of Peace". He looked at Gu Jue with the same indifference one might show a gutter drain.
In the centre of the room, an Elder of the sect lay strapped to a table, his chest heaving as jagged, poisonous Qi tore through his meridians like shards of glass.
Gu Jue didn't speak. He moved toward the table with a slow, eerie deliberation. Inside that frail, decaying skull, the soul of the Ancestor began to churn.
'Five centuries of divinity,' Gu Jue thought, his thin fingers hovering over the Elder's burning flesh. 'And I am reborn as a trash can for a third-rate apothecary. The Heavens have a twisted sense of humour. I suppose I should thank them for the appetite.'
He pressed his palm flat against the Elder's chest.
Normally, a Sin-Eater would convulse in agony as the poison entered their veins. But Gu Jue didn't flinch. He reached into the Elder's rampaging Qi with the precision of a master surgeon. He didn't just "absorb" the energy; he refined it. He treated the chaotic poison like a vintage wine, swirling it within his own broken meridians until it was sharp enough to kill.
Crunch.
The Elder's eyes snapped open. His ribs cracked inward as Gu Jue's light touch suddenly turned heavy as a mountain.
"Shh," Gu Jue whispered. His voice was a dry rasp, yet it carried a weight that made the air in the cellar turn cold. "Do not waste the breath. The scream is the seasoning. If you let it out all at once, you'll ruin the symphony."
The Physician at the door froze. The "rat" wasn't whimpering. The "rat" was smiling, a thin, predatory curve that made the Physician's heart skip a beat.
"Gu Jue! What are you doing? Finish the absorption!" Kang barked, his hand flying to the hilt of his sword.
Gu Jue didn't look back. He leaned closer to the dying Elder, whose eyes were now weeping thick, black streaks of gore.
"My 'loyal' disciple thought he could end the lineage of the Heavenly Demon," Gu Jue murmured into the Elder's ear. "He thought I was tired of the slaughter. He was right. I was tired. I was tired of being a King. I missed the simple, visceral joy of being a Butcher."
With a sudden, violent jerk, Gu Jue didn't pull the poison out—he inverted it. He took all the rotted, stagnant Qi he had stored in his "Sin-Eater" body for years and shoved it back into the Elder in a single, concentrated burst of malice.
The Elder's veins turned black, erupting through his skin like thorny vines. He didn't just die; he was dismantled from the inside out.
Gu Jue stood up, his milky eyes suddenly clearing, revealing two obsidian shards of pure, focused evil. He wiped a smear of the Elder's black blood across his cheek, tasting the copper.
"You..." Physician Kang stammered, backing away. "You're... you're a demonic monster!"
Gu Jue took a step forward. The floorboards didn't creak; they seemed to groan in submission to a predator they hadn't felt in centuries.
"Monster? No," Gu Jue said, his voice regaining a haunting, melodic clarity. "A monster kills because it is hungry. I kill because I find the silence of a dead man to be the only honest thing in this world. I am the Ancestor of your nightmares, little doctor."
He looked at Kang's throat, tracing the line where the first incision would go.
"You've spent years feeding me the 'sins' of your patients. It's only polite that I return the favour. Tell me... have you ever felt your own nervous system play a symphony? It's a bit high-pitched at the start, but the finale... the finale is divine."
Gu Jue lunged. He didn't use a sword; he used his fingers like claws, his face lit with a terrifying, ecstatic bloodlust.
The "Sanctuary of Peace" finally lived up to its name. Within minutes, the room was perfectly, deathly silent.
Gu Jue walked out into the moonlight, his small, frail body shivering, not from the cold, but from the sheer, addictive rush of being the Heavenly Demon again. He looked toward the Inner Sect, where the "geniuses" and masters slept, unaware that a ghost had just been reborn with an appetite for their souls.
"Wait for me, my 'dear' disciple," he whispered to the wind. "I'm coming back to reclaim my throne. And this time, I'm building it out of everyone you've ever loved."