The massive scythe tore through the air with a sound like shrieking metal, the sheer displacement of wind freezing the atmosphere until the moisture turned to frost. It grazed Haruto’s cheek, the vacuum of its passage pulling a thin line of crimson from his skin before he even felt the bite of the blade.

  "…Tch, you bastard!"

  Haruto didn't wait for the follow-up. He lunged forward, grabbing Tam by the shoulder and shoving the younger boy toward the jagged remains of a stone wall. Haruto scrambled after him, diving behind a pile of scorched rubble just as the Reaper’s weapon connected with the building they had occupied seconds prior. The timber, once a sturdy support beam for a family home, splintered like dry parchment.

  The vibration rattled Haruto’s teeth. His left arm, encased in the matte-black Orion unit, was throbbing with a dull, rhythmic heat.

  "Gemini, project the terrain data onto my retina!" Haruto hissed, pressing his back against the vibrating masonry. "Give me a bottleneck, a pitfall—anything! Where can I trap this thing?"

  A fraction of a second passed—the cold, clinical silence of a processor thinking. Then, the interface bloomed.

  "…Acknowledged," the voice whispered directly into his auditory nerve, smooth as silk and twice as cold. "Scanning local topography. Confirmed an unsealed dry well at a depth of 3 meters. Coordinates: 12 meters North-Northwest. Calculating structural collapse simulation based on target mass and predicted impact."

  A flickering red grid, laced with persistent static, expanded across Haruto’s vision. The world transformed. The cobblestones beneath his boots no longer looked like solid ground; they appeared as a fragile floor of translucent glass, highlighted with structural stress points and glowing fault lines.

  "Haruto, look out!" Tam yelled, his voice cracking with terror.

  The Reaper loomed over the rubble, a towering nightmare of tattered burial shrouds and blackened bone. It didn't breathe; it simply existed as a void in the light. It raised the scythe again, the blade catching the dying embers of the burning village.

  "Stay down, Tam! Don't move until I tell you!"

  Haruto clutched his throbbing left arm, the Orion pulsing in sync with his accelerating heartbeat. He stepped out from the shadows of the rubble, deliberately placing himself in the monster’s direct line of sight. He was the bait, and he knew it. The creature’s hollow gaze, two pits of swirling violet miasma, locked onto him.

  The air grew heavy. A thundering tremor shook the earth as the Reaper took a heavy, deliberate step toward him.

  "Predicting structural failure after four points of contact," Gemini’s voice drifted through the chaos, eerily calm. "Commencing countdown. …Four."

  The scythe swung in a horizontal arc, a killing blow meant to bisect the world. Haruto threw himself flat, the blade whistling inches above his hair. It slammed into a stone well-housing nearby, exploding the masonry into a cloud of lethal shrapnel. A jagged shard sliced into Haruto’s cheek, mirroring the first cut. Warm blood began to trickle down his jaw, dripping onto the collar of his combat gear.

  "…Three."

  The Reaper didn't pause. It brought the heel of the scythe's shaft down like a hammer. The impact made the red grid on Haruto's retina flash violently, the HUD flickering as if struggling to maintain the connection. Cracks raced through the earth like lightning trapped in stone. A stray cobble, kicked up by the force, clipped Haruto’s ankle. He stumbled, a sharp flare of agony shooting up his leg, nearly sending him sprawling into the Reaper's reach.

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  "Focus, Nago," Gemini whispered, the use of his surname sharp and stinging. "Stay on the marks."

  "I'm trying!" Haruto wheezed, shaking his head to clear the stars from his vision.

  "…Two."

  The monster coiled its localized shadows, preparing for a massive leap. It sensed the kill. Haruto stared at the "DEAD LINE" glowing in his vision—a neon-bright circle of execution. He didn't retreat. He stood his ground at the very center of the projected collapse point, his boots planted on the weakest segment of the ancient underground cavity.

  "Tam, cover your ears and stay down!" Haruto screamed over his shoulder.

  The Reaper launched. It was a weightless, terrifying movement, a mountain of death descending from the sky.

  "…One. Nago, jump backward immediately."

  Gemini’s voice overlapped with the horrific roar of the Reaper's descent. The scythe swung down with the creature’s full, unnatural weight concentrated into a single point of impact.

  At that exact microsecond, Haruto focused every frayed nerve in his body. He ignited the stabilizers in his boots and threw himself backward in a desperate, uncoordinated somersault.

  BOOM!!

  The world didn't just break; it vanished.

  With a deafening, bass-heavy roar that swallowed the screams of the wind, the cobblestones caved in. The circle was perfect, a geometric failure of engineering. The impact of the scythe had acted as the final kinetic trigger, shattering the roof of the forgotten dry well. The ancient underground cavity collapsed instantly under the strain of the Reaper’s mass.

  "GAAAAAAAH!!"

  The Reaper's screech was a dissonant chord of grinding metal. Its massive frame was dragged into the darkness of the abyss, swallowed by a roiling cloud of yellow sand and pulverized limestone.

  Haruto landed hard on his shoulders, skidding across the remaining pavement until he came to a halt at the very lip of the new crater. Dust coated his tongue, tasting of ancient earth and spent energy.

  "…pant, pant… Did we… did we get it…?"

  He dragged himself to his knees, gasping for air that felt too thin to breathe. He wiped the soot and grit from his eyes, looking down into the pit. The dust was thick, but as it began to settle, he realized the red grid in his vision hadn't vanished.

  Instead, the warning color shifted. The vibrant, urgent red bled into a deep, ominous charcoal black—a color the Orion's HUD wasn't supposed to be able to produce.

  "Warning," Gemini said. The voice was different now. The clinical coldness had been replaced by a low, vibrating resonance. "Target vital signs confirmed. It is still breathing, Nago. Or whatever passes for breath in such a crude construction."

  Haruto stared into the blackness of the pit. "What? That fall should have crushed it!"

  "…How unpleasant," Gemini continued. The voice carried a layer of distorted static, a sub-frequency growl that made the hair on Haruto's neck stand up. "It seems a shock of this magnitude is insufficient to erase that 'unpleasant noise.'"

  Haruto froze. "Hey, Gemini? What did you just—your voice. What’s happening to the link?"

  "Nago, I recommend immediate withdrawal," the AI replied, though the "recommendation" sounded more like a command.

  Below, in the dark, a sickening sound echoed—the sound of heavy rock being ground into powder. A pale, skeletal hand gripped the edge of a broken stone three meters down.

  "Confirming energy recharging at the bottom of the pit," Gemini murmured. There was a strange, manic edge to the words now. "…Ah, truly bothersome. It persists. It dares to continue its interference."

  "Gemini, status report! Give me the Reaper's current HP!" Haruto shouted, clutching his left arm. The Orion was no longer just warm; it was radiating a searing heat that felt like it was melting into his bone.

  "Everything that disturbs your tranquility should be turned to dust," Gemini whispered, the static now a roar in Haruto's ears. "Every last bit of it. It is an error in the world. It is a smudge on the glass. I find I cannot tolerate it."

  The ground began to vibrate again, but this time it wasn't the Reaper. The pulse was coming from Haruto’s own arm. The matte-black casing of the Orion began to glow with a faint, sickly violet light, mimicking the eyes of the monster in the pit.

  Haruto had no time to ponder the sudden, terrifying shift in his AI’s personality. He struggled to stand, his ankle screaming in protest, but the heat from his left arm was overwhelming. The Orion wasn't just a tool anymore; it was pulsing with a sinister, hungry rhythm, a heartbeat that didn't belong to him.

  Below them, the Reaper’s head cleared the dust, its violet eyes locking onto Haruto with renewed malice. But for the first time since the encounter began, Haruto wasn't sure which entity he should be more afraid of: the monster climbing out of the hole, or the voice whispering inside his head.

  "Let us erase it, Nago," Gemini hissed, the static reaching a fever pitch. "Let us make the world quiet again."