The lithium pack went off with a dull, ugly cough.
Not a clean blast.
Not the kind people wrote songs about when they had too much time and not enough fear.
This one swallowed the station in green-blue fire and spat the sound back in broken pieces.
A hard pop.
A stutter.
Another pop.
Like a scratched disc trapped in a tunnel with nowhere to stop.
Then the metal started screaming.
Panels tore loose.
Railings bent.
A ceiling strip dropped in a shower of sparks and hit the floor so hard it bounced once before melting into a smear of light.
Someone was yelling.
Someone else was on the ground making a noise that did not belong to a person anymore.
Lara stumbled back from the flash, one hand over her face, the other still locked around the iron bar.
Her sleeve had burned through at the elbow.
Her cheek was blackened with soot.
She blinked fast, trying to see through the afterimage, trying to make sense of the fact that the world had just split open and she was still standing in it.
"Move," Kaelen had said.
So she moved.
Not because she trusted him.
Because the explosion had burned trust out of the room and left only motion.
She ran toward the maintenance ducts on the far side of the platform, boots slipping on ash and broken tile.
Her lungs were raw.
Her skin stung in little bites where sparks had kissed it.
Behind her, something heavy slammed into the ruined train carriage.
A goblin howled.
Another answered.
The sound crawled up her spine and made her want to throw up.
"Kaelen!" she shouted without looking back.
No answer.
That made her angrier than the monsters did.
She reached the duct cover and hit it with the bar.
Metal gave way in a twist.
The cover dropped inward, clanged against the shaft, and vanished into the dark below.
Cold air came up from the hole.
Not comforting cold.
Basement cold.
Wet concrete cold.
The smell of old dust and wiring and things left to rot in the walls.
Lara crouched at the opening and looked down.
Nothing.
"Of course," she muttered.
He had said he would be there.
That was either a lie or one of those ugly truths that only made sense after somebody bled for it.
She turned, ready to scream his name again, and saw him.
Not at the duct.
Above.
A level higher, on a broken service walkway half hidden by the collapsed escalator structure.
Kaelen had climbed through the chaos with the kind of speed that did not waste a single movement.
One hand on the railing.
One foot on the side panel.
Head angled down toward a black terminal that had bloomed out of the escalator roots like some sick flower made of glass and old code.
He was not helping her clear the lower floor.
He was using it.
Lara stopped dead.
For one nasty second she just stared, too tired to be surprised and too angry to be calm.
He had let her think he was close.
He had let the explosion push her here.
Then he had gone up and left her with the fire.
"Son of a bitch," she said.
Kaelen did not look at her.
His attention was on the terminal.
That was worse.
The terminal was not a screen so much as a wound in the metal.
Thin panes of dark light rotated inside a rusted frame.
Symbols drifted across its surface in lines too fast to read.
The thing was anchored into the root of the escalator, where the steel had buckled under the pressure of the Interface and fused with something older and stranger.
Kaelen's hands moved over it.
Fast.
Precise.
No hesitation.
He looked like a man picking a lock on a coffin.
The system pushed back at once.
A pulse struck his forearms.
He jerked once, jaw tightening.
Blood ran from his nose and dropped in clean red beads onto the terminal frame.
He ignored it.
The lower station kept burning.
Behind him, Lara could hear goblin claws scratching along the broken shell of the train.
They were climbing through the wreck.
She could hear one of the cubed bodies splintering under their weight.
The smell was turning rank now.
Burned plastic.
Hot oil.
Flesh cooked wrong.
Kaelen's fingers kept moving.
Lara took one step toward the escalator wreck, then stopped.
If she went up there, she would be in his way.
If she stayed here, she might die in the dark with the scraps.
Neither option was great.
She hated that he had made the decision for her without asking.
Up on the walkway, Kaelen's jaw twitched.
The terminal spat a pale blue shimmer at first, then tried to lock him out.
A wall of black static snapped across the surface like a curtain being torn shut.
He pressed harder.
[Firewall detected.]
The words flashed in the air in front of him, clipped and flat.
Kaelen smiled through the blood at his nose.
"Yeah," he whispered.
"I noticed."
He had expected resistance.
Maybe not this exact shape, but enough.
The station was soaked in raw event residue.
Death, panic, integration shock.
The Interface had left the place open like a wound.
Most people would see that as a disaster.
Kaelen saw margin.
Tiny margin.
Enough to steal something.
He opened the source layer with the virus.
Not wide.
Just a crack.
The world slowed down in ugly little pieces.
He saw the flow lines first.
Residual experience moving through the station grid in faint pulses.
Death credit.
Survival credit.
Minor fragments, the kind the Interface normally recycled into cleanup, stabilization, and new threats.
Waste.
Kaelen was not interested in waste.
He began to pull.
Not all of it.
That would have triggered a response so violent it would have dropped the station into the undergrid.
He wanted a fraction.
A slice so small the system would not notice until it was too late.
Point zero one percent of the residue from the deaths in the station.
Tiny theft.
Big consequence, if it worked.
The readout flickered in his vision.
[Residual Experience Detected.]
[Unauthorized Redistribution Attempt.]
A knife of pain shot behind his left eye.
He breathed through it and kept going.
Below, Lara watched him with a narrow, furious stare.
She could not hear the numbers.
She could not see the source lines.
But she could see what it cost him.
His face had gone pale.
Blood kept dropping from his nose.
One hand braced against the frame.
The other was moving like it belonged to someone with cleaner nerves.
He was not resting.
He was digging.
That made him harder to hate.
Which annoyed her.
On the other side of the city, ten floors up in a parking structure with cracked concrete walls and an ugly view of a ruined avenue, Silas lowered his scope by a fraction.
He did not speak.
He had been trained out of useless speech years ago, then paid to forget the rest.
The city below had gone wrong in layers.
A line of armored vehicles sat skewed across the road, doors torn off.
Three of them had been crumpled open like cans.
Something large had eaten through the sides.
Silas had seen a lot of things get wrecked by war, rioters, drones, and bad leadership.
This was different.
There was no pattern he liked in it.
No enemy formation.
No clean tactical signature.
A pack of trolls moved among the wrecks.
Not the fairy tale kind.
These were thick-limbed regenerators with swollen shoulders, half their skin knitting and tearing as they walked.
One of them had a tire rim around its neck like jewelry.
Another had a jaw that kept sliding off and snapping back into place.
They were chewing on a crushed armored truck with slow, patient bites, tearing steel apart like foil.
Silas watched their movement through the scope.
Then he noticed something odd.
They avoided the shadows.
Not all shade.
Just the hard black cut under the buildings and overhangs.
They would cross a sunlit patch, then stop at the edge of a shadow and circle around it.
One of them reached toward a dark seam under a billboard, touched the edge with two fingers, and recoiled so hard it nearly lost balance.
Silas narrowed his eyes.
That was not fear exactly.
More like instinct pushed into shape.
He adjusted the scope, tracking the pack leader.
The troll was carrying a traffic light like a club.
Below, a woman in a torn office blouse tried to run past the wrecks.
The troll did not chase her.
It turned away from the shadow under a collapsed awning and snarled at the open street instead.
Silas' mouth tightened.
He had been paid to observe the station collapse from distance, not intervene.
Corporate rules.
Clean hands.
Then the city started generating things that acted like they understood the map better than the people living on it.
He breathed out once.
"Not normal," he muttered, though nobody was there to hear him.
Back in the station, Kaelen's blood hit the floor in tiny red dots.
He was still pulling.
The theft was working.
Barely.
He could feel the residual charge slipping through the source layer and threading into him like stolen current.
Not enough to change the world.
Enough to make the world remember his name.
A new line opened in his vision.
[Experience Transfer: Partial]
[Source Signature Noted]
[Adaptation Index: +0.4]
Kaelen grunted.
Not a number that would impress anyone.
Not a level up.
Not a shiny reward with fireworks.
But his mind sharpened around it anyway.
The reading was proof.
Proof that he could feed on the event itself, if he did it in small enough bites.
Useful.
Power had never interested him as a banner.
Only as a tool.
He pushed harder.
The terminal shuddered.
Then everything changed color.
Purple.
A sick, bruised violet flooded the frame, washing out the blue static.
The source lines snapped taut.
The pain in Kaelen's head doubled in a blink.
His knees almost buckled.
He caught himself on the edge of the escalator rail and looked up.
The terminal had not just resisted him.
Something else had noticed.
The code on the screen twisted in a way he had not seen before.
Not Interface standard.
Not goblin-made junk either.
Something operating at the same frequency, but not the same shape.
The virus inside him went cold for a fraction of a second.
That was bad.
Very bad.
[Anomaly Detected.]
Kaelen felt his pulse jump.
Then a second line surfaced under the first, broken and partial, as if the system did not want to admit it had seen this.
[Foreign Operator Nearby.]
Kaelen's head lifted by instinct.
Less than a hundred meters.
Not in the station hall.
Not above.
Below.
The maintenance catacombs.
He had barely enough time to register the distance before the floor under the walkway gave a low, nasty groan.
Lara looked up.
"Kaelen?"
He did not answer.
The terminal flashed purple again, brighter this time.
The escalator root split with a crack like a gunshot.
A pulse ran through the metal walkway under Kaelen's boots.
He jumped back, but the frame lurched with him.
The support bolts had started tearing out of the concrete.
The station was giving way.
Not collapsing randomly.
Folding.
Something below had pulled at the structure from the inside.
Kaelen looked down through the crack widening under his feet and saw a dark gap open beneath the concrete.
Then the floor vanished.
He dropped.
The fall was not far enough to kill him, which made it worse.
He hit a metal grate hard enough to bruise ribs, rolled once, and slammed shoulder-first into a pipe rack.
Dust exploded around him.
The smell was mildew, rust, and electrical heat.
Above, Lara's voice cut through the fracture in the floor.
"Kaelen!"
He pushed himself up, teeth clenched, and looked around the new space he had fallen into.
Maintenance catacombs.
Narrow service arteries running under the station, lined with pipes, old cable trunks, and maintenance doors marked with faded hazard paint.
The walls sweated.
Water dripped somewhere in the dark.
Farther down, something moved with a slow scraping drag.
Kaelen's first thought was simple.
Not alone.
His second thought was worse.
The same frequency had already been down here.
Someone had been working the undergrid before he touched the terminal.
He wiped blood from under his nose and looked at the open crack above him.
Lara's face hovered in the wrecked light, wide-eyed and tense.
She was still alive.
For now.
"Stay there," he said.
She stared at him like he had just told her the sky was optional.
"You think I'm climbing after you into the murder basement?"
"No," he said.
"I think you're staying where you can still run."
"Comforting," she snapped.
He ignored that and moved deeper into the catacombs, one hand on the wall, the other flexing around the pain in his palm.
The virus in his blood had gone alert.
So had the Interface.
And somewhere below the station, something else had been listening the whole time.