I Reincarnated as a Demon King,I Will Kill Everything

The ruins of Crowmere trembled under the weight of silence. Ash drifted like dying snow, settling on broken altars and collapsed pews. Blood pooled in the cracks of the stone, steaming faintly in the cold night. The once-proud cathedral was now nothing more than a grave of shattered idols and crushed faith.

I stood at the center of it all, gauntlet pulsing with rainbow-black light, Noa's whisper curling through my mind. Around me, my demons formed a ragged circle, their eyes wide, their breathing heavy. But none of them dared to step closer. They understood. This battle was mine alone.

Across the rubble stood Kravius. His silver eyes locked onto mine—steady, merciless, unyielding. Slowly, he drew his sword. The sound it made was not steel against steel, but something stranger—like moonlight itself being torn apart. The blade's glow carved the darkness, its silver fire pushing against my shadow. Even Selena's breath hitched when that glow spilled across her face.

Noa's voice vibrated within my arm, cold and analytical. "Enemy resonance stable. Aura intensity exceeds last encounter. Exercise caution, My Lord."

I smirked and raised my gauntlet, the gems flickering. "I've waited for this."

Kravius' voice was a growl dredged from memory. "I killed you once. I'll kill you again. And this time… nothing will bring you back."

My jaw tightened, but my grin never faded. "Then try."

I moved first. The ground ruptured beneath my boots as I launched forward, stone exploding in my wake.

[BLACK MOON DRIVE]

Void condensed around my fist like liquid night, flames of black and violet licking my knuckles. The silence of the world bent inward as I drove my punch toward his chest.

Kravius met me head-on. His blade flared, silver arcs splitting the air.

[MOON VEIL]

CLAAAAANG!

Fist and sword collided. Sparks scattered in every direction—black sparks that devoured light, silver sparks that burned holes into the night. The stone beneath us fractured into a spiderweb of cracks, the impact knocking rubble high into the air. Both of us slid back, heels grinding against the ruined floor, but neither fell.

The shockwave hurled broken pillars into Selena's halberd, forced Rena to cross her twin blades, made Clarissa crouch low to avoid being thrown off her feet.

Kravius straightened, wiped a thin line of blood from his lip, and smirked. "Still relying on brute force?"

"And you're still hiding behind borrowed light," I answered coldly. My gauntlet pulsed, Silent Crown rippling outward, thickening the air like a heavy fog. "Nothing's changed."

His eyes narrowed. He took a deliberate step closer, the hum of his blade vibrating through the cathedral. "Do you remember the cell, Neil? You begged. You begged me not to cut deeper."

Black fire crawled across my shoulders, my breath coming out in growls. "I remember. And I remember your laugh while I bled."

I leaned forward, voice breaking into a low, hungry snarl. "But now I don't need gods. I don't need chains. I have Silence. And Silence devours light."

He vanished. Silver arcs tore the night apart.

[SACRED TEMPEST]

The air screamed. His sword became a hurricane of cuts, each swing a streak of blinding light, each strike heavy enough to crush a mountain. The afterimages painted the ruins white with their glow.

I braced myself.

[Silent Crown]

The dome of shadow unfurled around me. His blade struck again and again, sparks and cracks racing across the barrier. Each impact thundered through my body, rattling my bones, jarring my teeth. Noa's gems flared as my gauntlet absorbed the shock, but pain still crawled down my arm.

"Integrity minus nine percent," Noa reported calmly. "Domain edges fracturing, My Lord."

Kravius' voice hissed through the storm. "You can't hold it!"

Rena's voice cut in from the side. "Allow me to aid you, My Lord!" Her blades glowed black with power, but I snarled back at her.

"Stay back! This is mine!"

Kravius twisted, bringing his sword down in a vertical arc meant to split me from skull to stomach. The light burned my vision white. I pivoted, sliding aside just in time, and the blade carved a glowing canyon into the stone floor, molten lines hissing where it cut.

The storm kept coming. His blade blurred in furious arcs, slicing faster than sound. Each swing pressed me harder, chipping at my shield.

But the Void stirred.

The gems embedded in Noa's surface lit up, one after another, like a row of awakened stars. I clenched my fist tight.

[VOID REVERSE]

My gauntlet surged forward. His silver arcs crashed into me—only this time, the Void swallowed them whole. The light dimmed, the momentum of his storm faltered, and his sword lost its brilliance.

His eyes widened. "What—?!"

I slammed my fist into the floor. The energy I had stolen erupted outward in a blast of rainbow-black fire.

BOOOOOOM!

Kravius flew back, crashing into a broken pillar. The marble exploded into fragments, rubble collapsing over him. He coughed blood, his armor blackened, yet somehow he forced himself to rise. His sword still glowed faintly, silver flames licking its edge.

I tilted my head, smirking. "Still standing. Good."

He spat blood, eyes narrowing further. "You think this is strength? This… is desperation."

I didn't answer. My gauntlet pulsed, whispering with Noa's voice. "Resonance stable. Crown integrity holding at sixty-eight percent. Still viable, My Lord."

We moved at the same time.

Kravius leapt high, silver fire engulfing his blade until it blazed like a comet. His roar shook the cathedral ruins.

[MOONLIGHT EXECUTION]

The sword became a streak of pure moonlight, a vertical slash meant to cut through not just me—but the world itself.

I charged from below, silence surging through every vein. My gauntlet condensed into a singularity, crushing air, sound, and light into its gravity.

[BLACK MOON DRIVE]

We collided in the heart of the cathedral.

The world vanished in light and shadow. The collision was not thunder—it was silence so dense it shattered everything around us. The explosion ripped pillars from their foundations, split statues of gods into dust, tore the cathedral roof wide open to the night.

The shockwave flung demons and knights alike into the air. Ash, rubble, blood—all lifted in a swirling storm.

When the chaos settled, I staggered one step back. My chest rose and fell with heavy breaths, smoke curling off my gauntlet.

Noa's voice hummed. "Integrity at sixty percent. Severe stress on right arm. But you still stand, My Lord."

Through the haze of dust, a figure emerged.

Kravius limped forward, silver eyes burning with stubborn fury. His armor hung in tatters, blood streamed freely down his side, and his breathing was ragged. But his sword still glowed. His blade still burned.

The corners of my mouth pulled into a thin smile. I straightened, rolling my shoulders, ready to strike again.

"Good," I whispered, my voice breaking into a low growl. "This won't end easy."

The battlefield hushed. Even the demons watching held their breath. The silence stretched like a blade across all of Crowmere, waiting to see which of us would remain when the other fell—moonlight or silence.