"Are you going to kill me too?"
Lara asked it with the bar still raised, but her feet had already changed.
Not much.
Just enough.
Kaelen noticed because he noticed everything that mattered.
Her weight had shifted to the balls of her feet.
Her left heel sat light.
Her shoulders were square, but not stiff.
She knew how to move when someone lunged at her.
Not from a gym.
From a street.
Maybe from worse.
Krav Maga, but bent and sharpened by panic.
Good.
Kaelen stayed where he was, one knee on the torn train floor, the copper core still burning faint heat into his palm.
The carriage around them rattled with every distant scrape from the tunnel.
Red emergency lights pulsed over broken seats, blood, bent metal, and the goblin corpse split open beside his boot.
He looked at Lara and did not soften his voice.
"If you scream, the hive comes down."
Her jaw tightened.
"If you fight, you bleed out before the third hit."
That got her attention.
Not fear.
Not yet.
Attention was better.
She blinked once, slow.
"You talk like this is normal."
Kaelen glanced at the dark seam of the tunnel and listened to the sound above them.
Metal steps.
Many.
Not random.
Coordinated.
The goblins were moving across the ceiling in packs now, clipping broken cables aside, dragging scrap into position.
He could hear them repairing something out there.
Fixing each other.
Fixing the tunnel.
Fixing the world into a shape they understood.
Kaelen faced Lara again.
"No," he said.
"This is bad.
There's a difference."
Her grip on the iron bar loosened by a fraction.
Not trust.
A crack in the refusal.
Kaelen saw it and used it.
He reached down, tore a strip of copper wire from the dead goblin's exposed rib cage, and held it up between two fingers.
It was slick with blood and oil.
The wire still hummed faintly.
Lara wrinkled her nose.
"You want me to touch that?"
"I want you to live."
"That's a weird way to start a sentence."
Kaelen almost snorted.
Almost.
He tossed the wire toward her feet instead of into her hands.
She flinched, then stared at it like it had insulted her.
"You need your first death," he said.
Lara's eyes narrowed.
"That sounds insane."
"It is.
But it works."
She let out a tight laugh, no humor in it.
"No, really.
I think you're the insane one."
"Probably."
Kaelen shifted his weight, ignoring the pain in his hand.
The copper core was settling now.
Not comfortable.
Just less violent.
The virus under his skin had already started translating the new charge into something he could use later.
A small growth.
Crude, but real.
He looked at the wire, then at Lara.
"The Interface won't give you a proper read until it marks you as surviving the first threshold.
It does that through violent contact.
Usually accidental.
Sometimes not."
Lara stared at him like she wanted to ask a dozen questions and throw the bar at his head at the same time.
Kaelen kept going before she could decide.
"You don't need a kill.
You need association.
Fresh blood.
Enough source contamination to force the system to notice you're already part of the event."
She looked down at the wire.
"You're telling me I should touch some dead monster's blood because that'll make a magic screen like me more?"
Kaelen gave her a look.
"Sort of."
"Sort of?"
"It's less about liking and more about being unable to ignore you."
The train groaned.
A seat frame cracked somewhere behind them.
One of the cubed bodies still pulsed wetly on the floor.
Lara swallowed, and Kaelen saw the exact moment her mind decided he might be lying, but not in the useful way.
Just in the exhausted way.
A man could sound crazy and still be right.
That was the kind of bad math the world had always rewarded.
She lowered the iron bar an inch.
Not enough to matter in a fight.
Enough to keep talking.
"What happens if I don't do it?" she asked.
Kaelen pointed with his chin toward the torn opening in the carriage.
"Then you stay blind."
"Blind to what?"
"Everything that wants to eat you."
That got a real reaction.
A small one.
But real.
Lara's mouth twitched.
Not a smile.
More like she had tasted iron and hated it.
The next scrape overhead came louder.
Then another.
Kaelen looked up.
The ceiling of the tunnel had become a workshop.
He could hear the goblins dragging steel mesh, cable bundles, and broken vent covers across the curved surface above the train.
One of them dragged something heavy and metallic, then dropped it with a clang that echoed through the wreck.
They were building a barricade at the east end of the route.
Not just blocking.
Reinforcing.
Smart little bastards.
That meant the west exit was the only clean line left.
Maybe.
He glanced toward the front of the carriage.
The floor there had buckled inward, but the side panel still held.
Above it, a service ladder led into the maintenance duct.
Narrow.
Tight.
Good for one person at a time.
Bad for being chased by things with too many teeth.
He could use the hive as cover.
He needed a spark.
Lara followed his stare.
"What are they doing?"
"Closing the door."
She gave him a dead look.
"You make everything sound normal in the worst possible way."
Kaelen crouched by the train panel and pried loose the shattered lithium battery pack he had pulled from the electrical housing earlier.
The casing was cracked.
The cells inside had ruptured just enough to leak a sour metallic smell.
It was unstable.
Dangerous.
Perfect.
He held it up.
Lara's eyes locked on it.
"That thing's about to go off."
"Not if you throw it right."
"You're assuming I know how to throw a bomb."
"I'm assuming you know how to be afraid and still move."
That hit harder than anything else he'd said.
Lara looked away for a second, then back at him.
"And what do I get out of this?"
Kaelen stared at her.
Not because the question was rude.
Because it was honest.
Good.
A person who asks that early has some spine left.
"You get a chance," he said.
She waited.
He did not dress it up.
"You get out of the train alive.
Maybe with a system read.
Maybe not.
After that, you decide whether you keep following me or walk into the tunnel and hope the city is feeling generous."
The girl's eyes narrowed further.
"That is not a plan."
"It's an investment."
Kaelen shoved the copper wire into her hand.
She stared at it, then at him, then down at the blood streaks on the wire.
"The Interface needs first contact," he said.
"You make it think you're tied to the kill event.
Touch the blood.
Hold it.
Don't let go until the pain starts."
She did not move.
Kaelen sighed once, annoyed, and leaned toward the goblin corpse.
He tore a strip of blood-soaked wire mesh free from the exposed wiring and shoved it into her other hand.
Lara jerked back.
"Jesus."
"Wrong field."
"That is not helping."
"It is accurate."
For half a breath, she looked almost ready to laugh.
Then the overhead scraping multiplied again, and all humor drained out of her face.
The goblins above were rearranging scrap.
Kaelen heard the clank of metal on metal.
Then the rattle of vents being stripped from a maintenance rail.
They were making a wall across the east tunnel mouth, using train parts and broken signage and a slab of side panel ripped from another carriage.
If that wall finished, they would be boxed in.
The hive had time.
Kaelen had less.
He leaned toward Lara and lowered his voice.
"When I say now, you throw the battery at the central generator housing in the next bay.
Not at the monsters.
At the housing."
She looked toward the front of the train.
"There's a generator?"
"There was."
She gave him a sharp, skeptical exhale.
"And you just happen to know where it is?"
"I can read the structure."
"That sentence should not sound that calm."
"It doesn't.
You're just distracted."
Her eyes flashed at that, but he saw the fear under it.
Not the messy kind.
The kind that makes people sharp.
Kaelen reached out and tapped two fingers to the copper wire in her hand.
"Touch the blood."
Lara frowned.
"Now?"
"Yes."
"Why not after we get out?"
Kaelen looked toward the tunnel.
A goblin climbed onto the broken shell of the train and stopped, head tilted.
Listening.
Smelling.
Its single real eye caught the red emergency lights and reflected them back like a wet bead.
"Because you have about thirty seconds before that thing decides your face is interesting."
Lara cursed under her breath.
Then she did it.
She pressed the bloody wire into the center of her palm.
It took her less than a second to regret it.
The reaction hit like a kick from the inside.
Her body jerked.
The bar clanged against the floor.
Her knees bent.
She made a sound that was half breath and half gasp, and her face went white so fast it looked like the blood had been vacuumed out through her eyes.
Kaelen watched the system try to take hold.
There.
Good.
Open.
A faint text shimmered at the edge of his vision, not his own panel but a shared read through the viral layer.
[Unregistered candidate detected.]
[Source contamination incomplete.]
[Primitive neural profile.]
Then the words shifted.
Kaelen felt the code stabilize.
Lara doubled over and vomited onto the broken floor.
Not much.
Mostly bile.
A little blood.
Her fingers spasmed around the wire, then locked.
Kaelen did not move to help her.
Not because he was cold.
Because help could be a luxury and luxury was how people died.
He watched the read build.
Her body was not built for this.
That was obvious.
But her system had a strange, ugly flexibility in it.
The kind that came from surviving things that should have broken her before.
Her stats surfaced in fragments, stuttering into focus through the viral lens.
[Agility: High]
[Stealth Aptitude: Predatory]
[Fear Response: Suppressed]
[Pattern Memory: Above Average]
Kaelen's eyes narrowed.
Predatory stealth.
Not trained.
Inborn, maybe.
Or carved by necessity so deep it became instinct.
Useful.
Very useful.
She wiped her mouth with the back of her wrist and glared at him through the nausea.
"You could have warned me."
"No."
"Why not?"
"Because you would have hesitated."
Lara stared at him for one long second, then spat a little blood to the side.
"I hate that you're probably right."
"Good."
He heard the first goblin drop onto the carriage roof.
Then another.
Then another.
Metal claws skittered over the exterior shell.
The train vibrated as bodies moved above and along both sides, circling the broken opening.
The hive was tightening its net.
Kaelen looked west.
The maintenance duct was still open, but the path to it was ugly.
Broken seats, a twisted handrail, exposed wiring, and a patch of floor that looked ready to collapse.
To get there clean, he would need a distraction.
A bright one.
He turned to Lara and held out the battery pack.
She stared at it.
"You want me to run at them with that in my hand?"
"No.
I want you to throw it at the generator housing when I tell you."
"And then?"
"Then run west."
"You really keep saying that like it's a full sentence."
"It is if you don't die halfway through."
Another goblin peered down through the hole in the ceiling.
Its head was too wide.
Teeth in places teeth should not be.
It sniffed the air, then locked onto Lara's bleeding hand.
Kaelen saw the creature's attention shift.
It had noticed the contamination.
Not her as prey.
Her as signal.
That made sense.
The interface mark was probably bleeding into her system now.
Enough to smell.
Enough to track.
"Kaelen," she said, and her voice had gone thin again, "why are they looking at me?"
"Because you're louder now."
"That is not reassuring."
"It's honest."
One of the goblins above hissed, and the others answered.
The hive had found the new scent.
Kaelen felt the moment before motion changed.
He pointed at the housing at the far end of the next carriage, where the old train generator still sat mounted under a torn panel.
Wires hung from it like veins.
Scrap shields had been bolted around it by the goblins, probably because it gave off charge.
Maybe because they used it.
Maybe because they were stupid.
None of that mattered.
The thing was central.
That meant important.
That meant explosive if hit right.
He leaned close enough that Lara could hear him over the scraping above.
"On my count, you throw the battery into the arc field and keep your head down.
Do not stare at the flash.
Do not wait to see if it worked."
She swallowed.
"And you?"
Kaelen looked at the west duct.
"I leave before the monsters decide to be brave."
She snorted once.
A nervous sound.
"That's one hell of a speech."
"I'm not giving one."
Another goblin dropped into the carriage behind them.
Then the ceiling cracked in two places at once.
The hive was coming down.
Lara tightened her grip on the battery, then looked at him with a flat, almost angry kind of honesty.
"If you're lying to me, I'll come back and hit you with the bar."
Kaelen gave her a quick glance.
"Fair."
"On principle."
"Still fair."
She took one step toward the generator bay, then hesitated and looked back.
Not fear.
Measurement.
She was already asking the next question in her head.
Whether he knew where the duct led.
Whether he planned to run alone.
Whether he had a reason for choosing her.
Kaelen had reasons.
Too many.
Most of them ugly.
He did not offer her comfort.
Comfort was for people who had time.
He only said, "When it flashes, move."
Lara nodded once.
The first red eyes turned toward them in the dark.
Kaelen drew in a breath.
"Now," he said.
And Lara threw the battery straight into the generator arc, just as the ceiling above them split open and the whole tunnel lit up white.