Cold was the first thing he felt.
Not pain. Not falling. Not confusion.
Just cold.
It wrapped around Akira like winter water, seeping through clothes he couldn't see but somehow still felt wearing. There was no wind. No ground. No sky. Yet his body reacted as if exposed to open air on a mountain at night.
He hugged his arms to himself instinctively.
"Where…?"
His voice didn't echo. It didn't carry. It simply stopped a few inches from his mouth, swallowed by the emptiness around him.
The void stretched endlessly in every direction. Not black. Not white. Just absence. A place without texture or distance.
For a moment he wondered if he had died.
Then the light appeared.
A thin horizontal line, hovering at eye level.
Too straight.
Too deliberate.
It widened, unfolding into text made of pale, steady luminance.
[Host Consciousness Stabilized]
Akira's breath hitched.
He blinked hard. "This is a dream," he whispered to himself.
The text shifted.
Welcome to the Machinery System.
The voice followed a heartbeat later.
It wasn't loud. It wasn't soft. It didn't vibrate the air. It existed directly in his awareness, precise and emotionless.
His pulse began to race.
"Machinery… system?"
You have been selected for external deployment.
Objective: Eliminate demonic entities.
Confirmed eliminations generate currency.
Currency may be exchanged for technological assets.
Demonic entities.
His mind snagged on the words.
Images surfaced unbidden — pale faces in moonlight, elongated limbs, regeneration that ignored mortal wounds.
"Demons?" His throat felt dry. "Like… what kind of demons?"
A faint pause.
Target environment designation: Kimetsu no Yaiba.
Taishō-era Japan.
Demonic entities exhibit enhanced strength, regeneration, nocturnal predation behavior.
Primary weakness: solar-spectrum radiation.
The cold inside him turned to something heavier.
Kimetsu no Yaiba.
Demon Slayer.
He saw it clearly now — forests at night, villages terrified, Hashira cutting through monsters with blades forged from sunlight.
He wasn't Tanjiro.
He wasn't a trained swordsman.
He was just… Akira.
An ordinary man who spent too much time behind screens.
"I'll die," he said quietly.
Survival probability without system utilization: 4.2%.
Four percent.
His stomach tightened.
A new panel unfolded in front of him, transparent and clean.
Starting Allocation: 5,000 Points
The number glowed faintly.
Five thousand.
He had no idea what that meant.
"How much does one demon give?" he asked.
Reward amount undisclosed.
Scaling variable dependent on threat classification.
Of course it was.
No numbers. No tutorial. No safety net.
His fingers trembled slightly. He pressed them together to steady them.
If he appeared in a forest at night without shelter, he could freeze. If he wandered blindly, he could walk straight into a demon's territory. If he spent wrong, he would have no second chance.
The marketplace interface expanded around him like panes of glass forming a circle.
Categories hovered in neat columns.
Reconnaissance
Solar Weapon Systems
Autonomous Units
Energy & Logistics
Medical
Infrastructure
He forced himself to breathe slowly.
Shelter first.
He selected Energy & Logistics.
The list scrolled silently.
Field tents. Portable stoves. Rations. Water purification kits. Compact generators.
The practicality of it grounded him slightly.
He imagined landing in a forest — cold air, damp ground, nowhere to sleep. He imagined trying to think clearly while shivering through the night.
He selected a Compact Weatherproof Tent.
Insulated. Low-visibility fabric. Quick deployment.
Cost: 200 points.
Balance dropped to 4,800.
It felt real, somehow — like buying something tangible.
He added Field Rations – 30 Days.
Cost: 150.
Balance: 4,650.
He swallowed. Hunger was weakness. Weakness was death.
A Portable Water Filtration Unit followed.
Cost: 180.
Balance: 4,470.
The number was already shrinking faster than he liked.
He hovered over compact generators but pulled back. Too much too soon.
Information.
He needed eyes.
He switched to Reconnaissance.
The list updated.
Autonomous Scout Drone – Mk I
Fully AI-operated.
Thermal imaging.
Low-light optical feed.
Passive acoustic detection.
Solar-assisted recharge.
Operational range: 2 km.
Cost: 900 points.
Not manned. Not remote piloted.
Autonomous.
That was important.
If he had to manually control it while panicking in a forest, he'd make mistakes.
He read the description twice.
The drone could patrol independently. Identify abnormal heat signatures. Flag movement patterns inconsistent with wildlife.
It was expensive.
But stepping into Kimetsu no Yaiba blind was suicide.
He purchased one.
Balance: 3,570.
The drop made his chest tighten.
He resisted buying a second.
One was already nearly a fifth of his starting funds.
If he died, money didn't matter.
If he overspent now, he might never reach a second kill.
He lingered, staring at the remaining balance.
Then he opened Solar Weapon Systems.
Most items were beyond him — heavy emitters, mounted arrays, high-output projectors.
Then he found something manageable.
UV Flood Drone – Mk I
Autonomous hover unit.
Wide-angle solar-spectrum emitter.
Effective radius: short-range.
Continuous output window: approximately 4 seconds.
Cooldown required after burst.
Cost: 1,200 points.
Four seconds.
He imagined a demon lunging.
Four seconds of sunlight-equivalent exposure.
Would that be enough?
He didn't know.
He didn't know how durable even a weak demon truly was.
He closed his eyes briefly.
He was terrified.
But terror wasn't useful.
He needed at least one offensive option.
He purchased it.
Balance: 2,370.
The number was beginning to feel small.
Very small.
He resisted buying a second.
If he burned all his points on weapons and died from exposure or dehydration, it would be absurd.
He forced himself to stop browsing.
His heart was still racing.
"Is it night?" he asked the void.
Deployment time: local night cycle.
His stomach dropped.
Of course it was night.
That would be too easy otherwise.
The interface dimmed slightly.
Loadout confirmed.
Deployment in five seconds.
His throat tightened.
"Wait—"
The void fractured.
Cold air slammed into him like a physical force.
He stumbled forward as his boots met uneven earth.
The smell of pine and damp soil flooded his senses.
He was standing in a forest.
Dark.
Deep.
The trees rose like black pillars around him, their branches clawing at a sky scattered with distant stars.
Wind moved through the canopy, whispering.
His breath fogged faintly in the night air.
It was real.
Too real.
A faint system panel flickered at the edge of his vision.
Balance: 2,370 Points
No map.
No glowing objective marker.
Just trees.
Somewhere in this forest, creatures existed that could tear him apart faster than he could scream.
His hands were shaking.
He wasn't brave.
He wasn't a hero.
He was a human standing in the dark in the world of Demon Slayer.
He forced himself to move.
"Deploy scout," he whispered.
A shimmer formed beside him.
The autonomous drone materialized silently, rotors unfolding with mechanical precision. Its surface was matte black, nearly invisible in the darkness.
Without waiting for further command, it rose smoothly into the air, climbing above the tree line.
A thermal overlay began forming in the corner of his vision, colors mapping the forest in muted gradients.
No immediate large heat signatures.
Just wildlife.
For now.
Akira exhaled slowly, though his chest still felt tight.
He was cold.
He was afraid.
And somewhere out there, something was hunting.
But now — for the first time — he had something hunting back.
The forest did not feel cinematic.
It felt damp.
Cold.
Uncaring.
Akira stood still for a long moment after the scout drone vanished above the canopy, listening to the wind and the distant rustle of leaves. Every sound felt amplified. Every shadow felt like it could peel itself off a tree and lunge.
He forced himself to move.
Shelter first.
He scanned the area with trembling eyes, searching for something that would break line of sight from above and provide some cover from the wind. A large cedar tree stood slightly apart from the others, its roots pushing up through the soil in thick, knotted ridges. The trunk was wide enough that two men could barely wrap their arms around it.
Good.
He stepped behind it and knelt, hands stiff from cold as he opened the system panel.
The tent materialized in a compact roll beside him, vacuum-sealed and pristine. For a second he just stared at it.
This was real.
He unrolled it quickly, fingers clumsy but determined, assembling the lightweight frame beneath the tree's overhang. The fabric snapped into shape with quiet precision, dull green blending into the forest shadows.
He crawled inside immediately, zipping the flap shut, sealing out some of the wind.
It wasn't warm, but it was contained.
Contained felt safe.
He sat there in the dim darkness of the tent, breathing hard, heart pounding in his ears.
"I'm really here," he muttered.
Kimetsu no Yaiba.
Demons.
Night.
He swallowed and pulled out a ration pack. The packaging was modern, clean, sterile. The contrast with the era outside felt surreal.
He tore it open and forced himself to eat.
The food was bland but dense, heavy with calories. He chewed mechanically, eyes unfocused.
Maria would have laughed at this.
The thought hit him harder than the cold.
Maria, with her dark hair always tied loosely at the back. Maria, who insisted on budgeting every expense carefully even though he had already saved nearly four hundred thousand. Maria, who had smiled when they toured apartments, talking about wedding dates.
Four hundred thousand in savings.
Years of work.
Late nights.
Careful planning.
Gone.
No bank account here.
No safety net.
Just five thousand system points and monsters in the woods.
He pressed his fist against his mouth, anger burning in his chest.
"What right do you have?" he whispered into the tent's fabric. "To just throw me here?"
The system did not respond.
He laughed quietly, bitterly.
Of course it wouldn't.
He swallowed the rest of the ration and wiped his hands on the cloth provided. No crumbs left behind. No scent trails if he could avoid it.
He opened the system panel again.
The scout drone's feed expanded, overlaying his vision in translucent layers. Thermal gradients flickered across his sight, trees glowing faintly against the colder night air. Small clusters of orange moved — animals. Rabbits. Maybe deer.
The drone's AI worked independently, adjusting altitude, scanning for anomalies.
It wasn't remote controlled.
It was integrated.
A small notification appeared in the corner of his vision.
Autonomous Recon Active. Pattern Analysis Engaged.
Akira leaned back against the tent pole, staring into the feed.
Hours passed.
The forest shifted from deep night to darker night. The wind changed direction. Wildlife patterns shifted. He forced himself not to drift into sleep.
If a demon was nearby, it would be hunting.
He studied the thermal signatures obsessively.
Every spike made his heart jump.
Every false alarm made him clench his jaw tighter.
His thoughts spiraled as the hours dragged on.
Four hundred thousand.
A future.
A life.
Gone because some cosmic system needed a demon exterminator.
"I didn't sign up for this," he muttered. "I didn't ask for this."
Anger replaced fear gradually, settling into something colder.
If he had to survive here, he would.
He would not die in a forest like prey.
He would not let Maria become a memory that ended here.
If there was even the slightest chance of returning, of accumulating enough power to go back—
He would take it.
A soft chime interrupted his thoughts.
Anomaly Detected.
His breath stopped.
The feed zoomed automatically, AI focusing on a moving heat signature at the edge of the forest, approximately 1.6 kilometers from his position.
It was too large to be a deer.
Too upright.
Too wrong.
The shape moved with unnatural fluidity between trees, occasionally dropping to all fours, then rising again.
The thermal signature burned brighter than surrounding wildlife.
Akira's mouth went dry.
The AI enhanced contrast.
The optical feed switched on.
And he saw it.
It looked vaguely human at first glance.
Then the details resolved.
Its limbs were too long, elbows bending slightly backward when it crawled. The skin was pale but mottled, stretched tight over sharp bone structure. Its mouth hung open slightly, revealing teeth that were not uniform but layered, jagged, like shards pushed through swollen gums.
Its eyes glinted faintly in the darkness, reflecting starlight unnaturally.
There were dark stains along its jaw.
It moved with hunger.
It paused occasionally, sniffing the air, head tilting at odd angles.
Weak demon.
Unnamed.
Still more than enough to tear him apart in seconds.
Akira's heart hammered painfully in his chest.
The demon darted toward a distant path — likely a road, maybe leading toward a village.
If it reached civilians—
He swallowed hard.
He looked at the sky through the tent fabric.
Night.
Hours until sunrise.
If he waited until day, maybe it would hide.
Demons hid in places sunlight couldn't reach — caves, abandoned houses, underground cellars.
His drones could not enter deep tunnels.
If it disappeared at dawn, he might lose it.
Worse.
It might kill someone before then.
His jaw tightened.
He stared at the balance in his vision.
2,370 points.
He still had the UV flood drone unused.
He opened the system panel and selected deployment.
The second drone shimmered into existence beside the tent, compact and silent, its emitter ring faintly visible even in the dark.
His hands were steady now.
Fear remained.
But beneath it, something sharper had formed.
He wasn't a swordsman.
He wasn't a hero.
He was a man with machines and a target.
"Track it," he whispered.
The scout drone adjusted course automatically.
The UV drone rose silently, aligning to intercept trajectory.
Akira stared at the moving heat signature in his vision.
If he hesitated, it would hide.
If he miscalculated, he would waste his only weapon.
His pulse steadied.
Tonight, he would learn what four seconds of artificial sunlight were worth.