The heat arrived before the light.
It pushed up through stone in steady breathes, not a blast, not a flare—an engineered exhale that made the air thicker and the skin damp where cloth held it. The corridor's shutter bands stayed narrow, but heat didn't need shutters. Heat climbed through seams and grates and iron ribs until the space felt occupied by something that wasn't a person.
Latch smelled it first.
His head turned early, chin lifting, eyes widening in the thin strip of light that cut across his cheekbone. His breath sped up. The ankle chain rattled with the change in stride when his body tried to slow.
Mark tightened the collar chain in his left hand—not choking, not yanking—just enough tension to keep Latch upright and moving. A stumble here would become a fall, and a fall in a corridor that wanted to be empty was a death sentence. Mark had learned that the hard way: the body only needed one second of stillness for the drain to start deciding whether the next breath would be allowed.
Inhale—two steps.
Exhale—two.
His breath count stayed tight because it had to.
The stiff board under his belt wrap pressed into the cracked rib line with every turn. The chalk rig sat over it, bulky, awkward, adding a second hard edge that bruised him from the inside. The oil jar pressed his chest under cloth muffler, held by elbow and torso. The ringkey bruised his hip under cloth wrap, a weight of consequence more than mass. The wooden wedge sat in his right hand and gave him something honest to grip, but the right palm wrap was damp. Damp cloth slid. Sliding meant micro-corrections. Micro-corrections meant pain. Pain meant breath theft if he allowed it.
He didn't.
His compromised leg behind the knee stayed slightly bent. The bite line pulled hot when he tried to lengthen stride. He kept steps short and flat, avoiding toe push-off. Flat steps reduced tendon strain. They also reduced lift in the dark, keeping the back of the knee closer to the floor and harder to catch.
The ear ringing narrowed detail. It wasn't loud enough to erase the world, but it made the thin world of shutter bands feel thinner. Mark used wall contact and heel counts to make the corridor tangible.
Heel. Heel. Heel.
Behind them, the professionals stayed present without being generous. Their footfalls were soft and synchronized, close enough to count as threat and far enough to deny easy kills. They didn't need to rush. The corridor and the shutters and the heat were doing part of their job.
A brass plaque appeared on the wall in a light band—an arrow stamped over a furnace glyph. The arrow pointed forward into the heat.
Latch's fear sharpened at the sight. His body knew the glyph. Not from reading. From being moved through it. From being used where the furnace breath lived.
Mark didn't stop to interpret the plaque beyond direction. Direction was enough.
He pushed Latch forward.
The corridor widened, and the air changed again—hotter, drier, carrying ash and metal in the same breath. Somewhere ahead, machinery rumbled low, a pressure felt in the sternum more than heard. The corridor floor shifted from traction bands to grated sections that radiated warmth.
Latch began to sweat. Sweat made his cuffs slick. Slick made his ankle chain rattle louder as his foot slipped in small ways.
Mark's stomach tightened at the sound. Not annoyance. Calculation. Loud chains could be bait. Loud chains could also be pressure. Pressure kept the drain from free-falling.
He didn't silence Latch.
He guided him.
They reached a threshold seam in the floor—thin iron strip set into stone. The seam ran wall to wall. The air on the far side was hotter and carried a different smell: slag, the sour metallic bite of molten waste and quenched stone.
Latch froze for a fraction at the seam.
The fraction was dangerous. The corridor behind was dark and disciplined. Stillness was poison.
Mark didn't drag him backward. Back was how you got held.
He shoved him forward over the seam.
Latch stumbled as his ankle chain caught the iron strip. Mark caught him with the collar chain before the stumble became a fall. The jerk made the schematic board bite the cracked rib. Pain flashed. Breath hitched. The drain tightened.
Mark forced motion through it.
Inhale—one.
Exhale—one.
Then back to two.
Inhale—two.
Exhale—two.
The room beyond the seam wasn't a room.
It was a walkway suspended over heat.
A catwalk ran straight ahead—a narrow band of metal grating with waist-high railings on both sides. Under the grating, orange light moved like slow water. Slag pits. Furnace mouths. The glow didn't flicker like fire. It pulsed as if breathing, rising and falling with draft.
The heat pressed up through the grating and made the metal sweat. Condensation formed where warm air met cooler railings. The railings were wet. Wet meant slip. Slip meant falls.
Falls here didn't mean bruises.
They meant disappearance into orange.
Latch's breathing turned frantic. His eyes were wide. He couldn't stop looking down, and looking down made him sway.
Mark tightened the collar chain and forced Latch's chin forward with pressure, making him look at the rail, not the pit.
A low clack sounded ahead.
Metal on metal.
Not machinery.
A spear point touching railing.
Then another.
Two points, spaced, as if someone had tested alignment and distance.
Mark's lungs eased a fraction because intent existed ahead. The drain backed off by degree. The curse was consistent in its cruelty: it would keep him alive when danger was close, even when danger was engineered to capture him.
He used that cruelty.
He stepped onto the catwalk.
The grating under his boot gave slightly. Heat rose through it and made the sole feel soft. The sensation was wrong. Wrong sensations were where slips happened because the body adjusted late.
He kept his steps flat and short.
Latch stepped onto the grating and flinched at the heat. His ankle chain rattled. The cuff metal warmed quickly. Warm metal on skin made him jerk.
Jerks were falls.
Mark kept the collar chain taut and used it like a guide line, pulling Latch's center toward the inside of the walkway rather than letting him drift to the railing.
The walkway was narrow. Narrow was good; it limited angles. Narrow was bad; it made any stumble catastrophic.
Ahead, the walkway crossed a wider opening where the slag glow was stronger. Heat shimmer rose and made the air bend. Shutter bands didn't matter here. The pit itself provided light, orange and unstable, casting moving shadows up onto faces and railings.
On the far side of the opening, a raised platform ran parallel to the walkway, separated by a gap of air and heat. The platform held three men in leather and cloth, no heavy armor, each holding a short spear with throwing balance. Their faces were partially wrapped, not to hide, to keep heat and ash out of mouths. Their stances were wide, stable. They didn't shout.
They didn't need to.
One spear lifted.
Mark saw the movement and felt his sternum tighten. The drain didn't climb now; danger was too present. The curse gave him breath because it assumed breath would be spent in conflict.
He kept breath count anyway.
Inhale—two.
Exhale—two.
The spear flew.
Not a kill throw.
A placement throw.
It wasn't aimed at Mark's chest. It was aimed at the catwalk grating ahead, at shin height, angled so the shaft would stick and become a barrier.
The spear struck the grating and bit into metal. The shaft vibrated and then held, creating a low obstacle across the walkway.
A second spear flew immediately, angled to land behind the first, creating a staggered pattern. Not a wall. A trap that forced footwork choices.
Footwork choices were expensive with a compromised knee.
Mark saw the pattern and adjusted before the second spear landed.
He pulled Latch to the left side of the walkway—away from the spear's likely landing line—and stepped over the first shaft with his good leg first, keeping the compromised leg low and flat.
Stepping over required lift.
Lift exposed the back of the knee.
He minimized lift by placing the foot on the spear shaft itself.
Not the point.
The wood.
He used it as a step.
Wood under boot was more stable than hot grating for a heartbeat.
He transferred weight quickly to the far side and slid the compromised foot over with minimal lift, letting the boot skim the shaft.
Latch couldn't do that.
His ankle chain shortened stride and made lift clumsy. He would catch on the shaft and fall.
Mark solved it by turning the collar chain into a pulley.
He stepped over first, then pulled Latch forward as Latch lifted his chained ankle. The pull reduced the time Latch's ankle hovered. Hovering was where balance failed. The pull also made Latch stumble forward rather than backward.
Forward stumble was survivable. Backward stumble into the pit was not.
Latch cleared the spear shaft by inches. The cuff chain scraped wood and rattled. The sound echoed over the slag.
The spear throwers didn't react with anger.
They corrected aim.
A third spear lifted.
This one flew not to land ahead, but to land at the railing to Mark's right, aimed to pin movement, to force him toward the center where the next throws could be patterned.
The spear struck the railing and stuck in the wet metal seam. The shaft leaned inward like a bar.
Mark did not back away from it. Backing would widen distance into lull behind, and lull was death. He moved forward through the narrowing gap and kept Latch moving.
The throwers' platform was raised, but not by much. The angle made their throws flatter. Flatter throws were harder to see in the heat shimmer. The shimmer bent their lines.
Mark relied on sound more than sight.
Spear points made a particular hiss when they cut hot air.
The hiss arrived a heartbeat before impact.
He used the hiss as cue.
A spear hissed toward the catwalk at knee height.
Mark slid his foot instead of stepping, keeping the compromised knee low, letting the spear pass where his knee would have been if he lifted.
The spear struck the grating behind him and stuck.
Now there were two spears behind and one in the railing to the right.
The walkway was becoming a forest of shafts—bars that forced careful foot placement.
Careful foot placement was slow.
Slow risked quiet if the throwers decided to pause and let the environment do the rest.
But the throwers didn't pause.
They kept pressure steady.
Professional.
Mark's right palm tightened around the wooden wedge. Damp cloth slipped. He corrected with micro-adjustment. The correction cost pain. Pain tried to steal breath. He refused.
He needed a new answer.
A way to change the throwers' line without giving them a stationary target.
He had a chain.
He had a pouch of rings and a small bell.
He had chalk.
He had oil.
Oil near slag was ignition risk. Ignition could be weapon. Ignition could also kill him if it became uncontrolled.
He didn't use oil yet.
He used sound.
He swung the pouch once and let the bell inside jingle against the rings—muffled, confusing—and then threw the pouch to the left, off the catwalk, toward the side structure.
He didn't throw it into the slag. He aimed for a maintenance ledge below the throwers' platform, a shelf of iron that caught runoff and debris.
The pouch struck iron and rattled loud.
The sound jumped.
The throwers' eyes flicked toward it for a fraction.
Not surprise.
Verification.
Professionals verified new sounds.
The fraction was seam.
Mark used the seam to move forward three steps, pulling Latch with him, clearing the densest spear pattern.
The pouch continued rattling as rings settled.
It created an illusion of movement off the walkway.
It wouldn't fool them long.
It didn't need to.
It needed to steal seconds.
Seconds mattered.
Latch's breathing was now ragged. Heat and fear were stealing his oxygen. His face was slick with sweat. Sweat made his collar strap slide. Slide made the collar chain less predictable in Mark's hand. Less predictability meant higher risk of Latch falling.
Mark shortened his own stride further and increased cadence, making movement smoother for Latch. Smooth movement reduced jerks. Jerks caused falls.
He kept breath count.
Inhale—two short steps.
Exhale—two.
The throwers recovered from the sound lure quickly.
A spear flew again, aimed not at the walkway now, at Mark's chest.
A kill line.
Not because they were trying to kill him.
Because a spear to the chest would force him to stop or fall, and stopping or falling would end him even if the spear didn't.
Mark didn't have a shield.
He had the wedge.
He didn't try to knock the spear away mid-air.
He used the rail.
He pivoted toward the left railing and let the spear strike the railing where his chest had been, the point biting iron and sticking. The shaft vibrated and then held, creating another bar.
The pivot cost his compromised knee a flare of pain. The back of the knee pulled hot. His breath hitched.
The drain tightened.
He forced motion through it by pulling Latch forward immediately, not allowing the pivot to become a pause.
Inhale—one.
Exhale—one.
Then back to two.
Inhale—two.
Exhale—two.
The walkway ahead narrowed further, forcing them into a tighter line. The railings were wet with condensation. Wet rails meant hands would slip if needed.
Hands were already compromised. His right palm was wounded and damp. His left forearm was burned under bandage, and the shoulder above it was unstable. He could not afford to rely on a grip on wet iron.
A spear hissed toward the floor again, aimed to land exactly where the compromised foot would want to step.
Mark heard it and stepped onto the spear shaft instead, using it as a step again. The shaft rolled slightly under boot because it wasn't fully embedded. The roll threatened a slip.
His knee dipped.
The back of the knee pulled hot.
He felt the bite line threaten to give.
He transferred weight quickly off the shaft onto the far grating and kept the compromised foot flat and low as it followed.
Latch could not do that.
Latch lifted his chained ankle and caught the cuff on the spear shaft.
The cuff snagged.
Latch's body pitched forward.
Forward pitch in a narrow walkway meant railing.
Railing meant wet iron.
Wet iron meant a hand grabbing for survival.
A hand grabbing meant grip on hot metal.
Hot metal meant burns.
Mark didn't allow Latch to grab the rail.
He yanked the collar chain hard enough to keep Latch's chest from slamming into the railing. The yank wasn't gentle. It wasn't meant to be. It saved him from the pit.
Latch's feet tangled. The ankle chain snapped tight. Latch fell to one knee on the grating.
Kneeling on hot grating.
He hissed through teeth.
The hiss was pain. Pain was loud in a place where professionals didn't shout.
The throwers' spears stopped for a fraction.
Not mercy.
Opportunity.
They were waiting for the moment Mark would stop to help Latch.
Stopping meant drain.
Stopping also meant being pinned by a spear planted through the grating or into flesh.
Mark didn't stop.
He moved into a squat without becoming still, keeping knees bent, center low, feet shifting in micro steps to avoid a full halt.
He used the wooden wedge as a pry.
He jammed it under the spear shaft where Latch's cuff had caught and levered the shaft up just enough to free the cuff.
The wedge bit under wood.
His right palm slipped on the wedge as he applied pressure. He tightened fingers. Pain flared. Breath hitched. The drain tightened.
He forced breath through it.
Inhale—one.
Exhale—one.
The cuff came free.
Latch tried to stand.
The compromised knee in Mark's own body protested the squat-to-stand motion. He kept it shallow and used hips, not knee extension.
Latch's ankle chain rattled as he regained balance. He was slow. Slow was dangerous.
The spear throwers resumed.
Two spears flew in close succession.
One aimed at the grating ahead to plant.
One aimed at Mark's thigh to force him to stop.
Mark pivoted toward the planted line and stepped onto the planted spear shaft again before it could settle. He used it as a moving step, letting it slide under his boot as it tried to bite the grating. The slide threatened slip. His knee dipped. He transferred weight quickly.
The thigh-aimed spear hissed past and struck the railing, vibrating.
Mark used the vibration as cue: the throwers were still focused on him, not on Latch.
Good.
If they shifted focus to Latch, Latch would die quickly. Latch's fear-sensor value would be lost. More importantly, Latch's fall would create a quiet moment after death that could trigger drain spikes in the wrong timing.
Mark needed Latch alive and moving.
He kept moving.
They reached the midspan of the furnace opening where the heat shimmer was strongest. The air here tasted metallic and dry. Breath felt thicker. The slag glow below made everything orange and unstable, casting moving shadows up onto faces.
The throwers' platform was now behind to the right, and a second platform appeared ahead to the left—another set of men, another line of throws, creating a cross-lane.
Mark understood the geometry instantly.
They weren't trying to stop him by a single firing line.
They were creating overlap.
Overlap was how capture lanes worked. Overlap forced him to commit to one direction while a second direction punished the commit.
He didn't have a shield.
He didn't have steel reliability.
He had wedge, chain, chalk, oil, and a fragile living compass on a collar.
He needed to reduce overlap.
He needed to move the platforms, or move himself under them, or make the platforms waste throws.
He couldn't climb to them. Climbing would require hands on rails. Rails were wet and hot and slippery. Hands were already compromised.
He chose another method.
He chose indirect.
The catwalk grating was bolted to supporting beams beneath. Those beams ran to maintenance braces at the sides. If he could damage a brace, the catwalk segment might shift. A shift would change spear lines. It could also kill him if it shifted wrong.
Risk was unavoidable. The question was whether risk was controlled.
He used the chain.
He swung the chain in a tight arc and hooked it around a protruding bolt head on the railing support at waist height, then yanked.
The chain was metal. Metal conducted heat. Heat rose from the slag and warmed the chain immediately. The yank made the chain bite into his left hand and forearm.
He felt heat through skin even through cloth.
A sting.
Then a sharper burn as the chain slid.
He didn't hold it long.
He yanked once, hard, using body weight rather than grip, then released.
The bolt didn't come free.
But it shifted a fraction.
The railing support creaked.
Not failure.
Stress.
Stress was useful if repeated.
He couldn't repeat too many times.
The chain was heating.
He needed to use it sparingly.
The throwers began their volley from both sides.
Spears hissed.
One struck the grating ahead and planted.
Another struck the railing behind and leaned inward.
Two more came close—one aimed for Mark's shoulder line, one for Latch's shin.
Mark used the planted spear as step again and dragged Latch over it by collar chain tension, keeping Latch's shin from being caught by forcing Latch's step timing.
The spear aimed at Mark's shoulder line hissed past and struck the grating near his left hand. The shaft vibrated and rolled slightly, and the point scraped his palm as it passed.
Not deep.
A hot scrape.
Heat and friction together.
The scrape left a burning line across his left palm where he'd used it to slide along wall seams earlier.
His left palm wasn't wrapped like the right.
The sensation was immediate and ugly.
He didn't stop.
Stopping was execution.
He felt the first sign of blistering as a hot tightness under skin.
Grip would suffer.
Grip already suffered.
This would worsen it.
The throwers weren't trying to wound hands specifically.
The environment was doing it.
Hot metal, wet rails, spear shafts, chain heat, all conspiring to punish any reliance on grip.
The catwalk ahead narrowed into a choke where two rail supports met, creating a gate-like frame. Past it, the slag glow diminished, suggesting the walkway would reach solid stone soon.
Mark needed to reach stone.
Stone meant traction.
Stone meant less heat.
Stone meant rails might not be wet and burning.
But the choke frame was also a kill box.
A perfect place to seat a spear.
The left platform throwers aimed for it.
A spear flew toward the choke at chest height, meant to land across the frame like a bar.
Mark could duck it.
Duck meant bending knees.
Bending knees pulled the bite line hot.
The knee refused full extension already; deep bends were dangerous.
He solved by sliding under instead of deep crouching.
He lowered center just enough and let his body skim forward, using a controlled slide on the grating, keeping the compromised knee from being forced into a deep bend.
The spear bar struck the frame above his head and stuck.
Wood and iron vibrated.
He passed under it with inches.
Latch couldn't.
Latch's head snapped up at the vibration and panic made him lift his hands to protect his face.
His hands were chained close by wrist cuff.
The lift made him lose balance.
He pitched forward toward the wet rail.
Mark caught him by collar chain again, yanking him down and forward, forcing his head under the bar.
The yank saved him from a fall.
It also slammed Latch's wrist chain against the hot bar frame as he passed.
The chain sizzled faintly.
Latch hissed, pain sharp.
He didn't scream.
Training.
Pain without scream was still pain, and pain made him move wrong.
Latch stumbled through the choke and nearly fell to his knees again.
Mark shoved him forward without stopping, keeping him upright by collar chain tension.
Beyond the choke, the walkway widened slightly and the slag glow weakened. Stone approached.
The left platform throwers adjusted aim, now aiming for the last stretch, trying to deny the final steps.
Mark had one more sound lure left.
The bell pouch had been thrown earlier. It was gone, sacrificed to noise.
He still had chalk.
Chalk could do more than rewrite doors. It could change traction.
He tore a chalk stick from the rig with his teeth while moving, snapped it, and ground it into dust between his fingers.
His right palm wrap was damp. The chalk dust stuck to it, turning it pasty.
He sprinkled the dust onto the wet railing where condensation had pooled.
Chalk dust on wet metal made a smear. Smear increased friction slightly. Not enough to make the rail safe. Enough to make a slip less immediate if he had to touch it.
He didn't want to touch it.
But Latch might.
Latch's fear made him reach for rails.
Mark used the chalk smear as a contingency.
A spear hissed toward Mark's thigh again.
He pivoted, and the spear struck the grating near his foot. The shaft vibrated. The vibration made his compromised knee dip as the boot adjusted.
The bite line pulled hot.
He felt the tendon protest.
He forced the foot flat and stepped off the spear shaft quickly.
The action made his right palm grip tighten on the wedge.
Pain flared through the puncture wound.
He didn't stop.
They reached stone.
The catwalk ended in a landing of rough, cooler stone that didn't sweat. The air here was still hot, but less aggressive. The slag glow was behind, no longer underfoot.
Mark stepped onto stone and felt traction return, honest and rough.
His lungs eased a fraction.
The drain tested the easing immediately by tightening under sternum.
The curse listened to sensation. Stepping onto solid ground felt like safety even though spears were still flying.
Mark refused the misread.
He forced threat.
He slammed the wedge once against the stone landing—thunk—and dragged Latch forward into the next corridor without pausing.
Latch stumbled onto stone and nearly collapsed. His knees buckled. The ankle chain rattled. Mark caught him by collar chain and shoved him forward again.
The throwers behind didn't chase onto the landing.
They didn't need to.
They had done their job.
They had forced Mark to cross heat and metal and wet rails under pressure.
They had made him use his hands against hot and abrasive surfaces.
They had punished grip.
Mark felt it in his palms now that the immediate crossing pressure shifted.
The right palm wound under cloth was swollen and raw. The damp wrap had rubbed chalk paste into it. The skin felt softened by sweat and heat. The left palm had a hot scraped line from the spear shaft and the heated chain bite. The skin was tight, tender. Blisters were forming under the surface, not yet torn open, but present.
Grip was becoming a problem even when he wasn't holding steel.
Grip would worsen.
He didn't allow the thought to become reflection.
Reflection was time.
Time could become calm.
Calm killed.
He kept moving into the corridor beyond the landing.
The corridor was cooler and darker, with shutter bands returning overhead. The heat behind remained as a pressure at his back, and the spear hiss stopped as the platforms lost line of sight.
The sudden reduction in external threat was dangerous for a different reason. The curse would try to interpret the absence of spear hiss as safety.
Mark needed a threat thread.
Behind him, the professionals' footfalls returned, quieter than the spear hiss but present. They had taken a different route around the furnace opening. Professionals always had routes.
Their footfalls were close enough now to keep breath open.
Mark used them.
He kept Latch moving.
Latch's head turned early down a side seam, away from the main corridor. The seam smelled of chalk and oil and metal—workroom scent again.
Mark followed the head turn without hesitation. Latch's fear was a compass. It reacted to places that used him. Places that used him were procedural nodes. Procedural nodes were where Mark could steal more tools.
He pushed into the seam with Latch ahead and his hands burning under skin, knowing the next fights would not be decided by whether he had a weapon.
They would be decided by whether he could hold it.