A cargo train rumbled across the surface streets far above them.
The vibration traveled down the structural pillars. It shook the subterranean catacomb, knocking centuries of dried moss from the arched brickwork.
Kaelen lay on the smooth basalt floor. His core temperature held steady. The feral heat Siora had forced into his failing organs remained anchored behind his ribs. The thermal void was contained.
His tactical mind demanded a return to baseline protocols.
He braced his right hand against the damp floor. Pushing upward, he attempted to shift his weight and stand.
His body failed completely.
Agony spiked through his right femur. The black-market chemical resin binding his shattered tibia had cured into a rigid, immovable block. It locked his knee joint entirely. His left arm hung at his side like a dead weight. The frostbitten fingers curled inward, stiff and purple.
His elbow gave out. He collapsed back against the stone wall.
Siora sat a few feet away. She pulled her ruined silk tunic over her shoulders. Her slitted pupils tracked his pathetic attempt to assert dominance.
"You cannot walk," she stated.
Kaelen leaned his head against the brickwork. He regulated his breathing to manage the throbbing pain in his leg.
"I just need a crutch," he rasped.
"You need an apothecary," Siora corrected. "And you have zero ammunition. Without your glass, you are a beggar in a sewer."
She did not offer sympathy. Sympathy did not exist in the slums, and it certainly did not exist on the Steppes. She evaluated him as a pure liability.
Metal clattered against stone.
Kaelen shifted his gaze.
A small brass pneumatic tube bounced across the floorboards. It rolled to a stop near his boot.
He looked up. A rusted iron grate covered a narrow ventilation shaft in the ceiling. The transit lines above connected the industrial sectors directly to the elite estates.
Lyra Thorne possessed unlimited access to the capital's infrastructure.
Kaelen dragged himself forward. He grabbed the brass cylinder. Twisting the cap, he pulled out a tightly coiled slip of heavy vellum.
He unrolled the paper. He held it toward the faint, ambient light filtering down from the grate.
Siora crawled closer. Her feline ears pivoted toward the shaft, listening for approaching Ministry boots.
"What does the aristocrat say?" she asked.
"She confirms the hostage," Kaelen read the cipher. "Julian Sterling extracted Elara. He relocated her to his family estate in the upper wards."
Kaelen crushed the vellum in his fist.
"He knows I survived the fall from the Academy roof," Kaelen continued. The reality of the situation solidified. "He is baiting me. He wants me to walk through his front door."
"Julian employs personal guards," Siora noted. "His estate utilizes layered kinetic wards. He wears artifacts that deflect physical mass."
"I know."
"You own a broken leg and a dead arm." She pointed at his empty pockets. "You possess zero glass spheres."
Kaelen stared at his empty hands.
External Anchoring required a vessel. He needed an object to house the violent kinetic Threads he pulled from the atmosphere. Cheap glass marbles shattered on impact, releasing the stored energy as a concussive bomb.
He had traded his coat for a single piece of obsidian days ago. He used it to blow up the Academy courtyard.
He possessed nothing now. He was entirely unarmed.
Frustration chewed at his focus. He slammed his fist against the wall behind him.
His knuckles scraped against the damp masonry. The friction tore away a thick layer of wet moss and packed dirt.
Kaelen froze.
He looked at the exposed stone.
The wall was not made of brick. The ancient catacomb predated the empire. The original architects had carved this maintenance cellar directly into the bedrock.
He dug his fingernails into the dirt. He scraped furiously, tearing away centuries of accumulated grime.
Smooth, pitch-black stone gleamed in the dim light.
"First Era construction," Kaelen whispered.
Siora leaned forward. "It is just rock."
"The Ministry builds with iron and marble," Kaelen explained. His heart hammered against his ribs. "The First Builders utilized natural volcanic vents. This entire foundation is carved from a solid vein of obsidian."
He pressed his palm flat against the black glass.
He ran the density equations in his head.
Mass over volume.
A cheap green marble held a baseline vibration of four hundred hertz. The flawed glass cracked under the pressure. It leaked kinetic energy. It broke easily.
Obsidian possessed an entirely different atomic structure. Volcanic glass lacked internal air bubbles. It was forged in absolute heat.
Calculate the quotient.
Kaelen visualized the division. He carried the remainder.
The numbers spiraled into terrifying territory.
Standard glass merely contained his magic. Obsidian possessed a near-infinite density quotient. It would not just hold a kinetic Thread. It would amplify the frequency. The black glass could absorb thousands of hertz without fracturing.
He could level a fortress. He could shatter Julian Sterling's kinetic shields into dust.
Kaelen grabbed a loose iron spike from the rubble. He drove the metal tip directly into a natural fissure in the wall. He struck the end of the spike with the heel of his boot.
The stone chipped.
A jagged shard of black glass the size of his palm fell to the floor.
Kaelen picked it up. The edges were razor-sharp. It felt incredibly heavy.
He gripped the ultimate weapon. He possessed the means to tear down House Sterling. The title of Obsidian Noble was no longer a theoretical concept in an ancient ledger. It sat right in his hand.
He looked at Siora.
"I have my ammunition," Kaelen stated.
Siora looked at the black shard. She looked down at his fused, useless leg.
"You hold a rock," she said bluntly. "You still cannot walk across a room. You cannot climb the transit shaft. Julian Sterling will step on your throat before you ever throw that stone."
The logic was absolute. Progression meant nothing without a functional vessel.
"The Apothecary Guild is locked down," Kaelen said. "Malakor will station Crimson Coats at every clinic in the lower wards. If I walk into a hospital, they will execute me."
"They monitor the humans," Siora replied.
She stood up. She brushed the dirt from her bare legs and pulled on her ruined trousers.
"I did not cross the continent alone," she explained. "The Steppes sent a diplomatic caravan. Three dozen merchants, scouts, and handlers. We established an encampment in the Bronze Market. We sleep among the draft beasts."
Kaelen processed the logistics.
The Ministry viewed beast-kin traders as impoverished peasants. The Crimson Coats rarely patrolled the outer merchant rings. It was a massive blind spot in the capital's security grid.
"My tribe travels with elder shamans," Siora continued. "They understand biological trauma. They use marrow-binding."
"Marrow-binding," Kaelen repeated.
"They will use poultices to dissolve that toxic resin," she told him. "They will re-break your tibia. They will force the bone to knit."
The prospect promised pure agony. It also promised a functioning leg.
"We accept the pain," Kaelen decided.
Siora nodded. "We have to cross three industrial districts to reach the Bronze Market. You wear a bloodstained Academy uniform. I possess feline ears and a tail. We are the most conspicuous targets in the capital."
"We need a disguise."
Siora walked over to the corner. She picked up Kaelen's ruined charcoal coat. She had torn it off his shoulders to save him from hypothermia.
She drew a bone-handled knife from her boot. She sliced the silver Academy crest clean off the collar.
Tossing the crest into the stagnant water, she cut the heavy wool straight down the back seam. She divided the coat into two large rectangular pieces.
She handed him the right half.
"Wrap the arm," she ordered.
Kaelen draped the dark wool over his left shoulder. He fashioned a crude sling. He completely concealed his paralyzed, frostbitten fingers. Tucking the excess fabric into his belt, he evaluated his appearance.
He no longer looked like an elite student. He looked like a maimed factory worker returning from a brutal shift in the refinement mills.
Siora took the remaining half of the coat. She draped it over her head like a heavy cowl.
She pulled the wool forward, entirely hiding her tufted ears. She wrapped her long tail tight around her waist, securing it flat against her stomach beneath her tunic.
She scooped a handful of wet ash and mud from the floor. She smeared the grime across her cheekbones, masking the exotic angularity of her face.
She looked like a nameless beggar.
"You lean on me," Siora instructed. She stepped beneath his right arm, hoisting his weight onto her shoulders.
Kaelen gripped the jagged obsidian shard in his right hand. He shoved it deep into his trouser pocket. The sharp edge cut his palm. He welcomed the sting. It kept his mind anchored.
Siora kicked the iron bolt on the door. It groaned open.
They stepped out of the catacomb. The freezing draft of the storm drains hit their faces.
"We move slow," Kaelen mapped the route in his head. "We take the runoff tunnels. We avoid the main canals."
"Tell me where to step," Siora said.
They limped into the dark.
The journey to the Bronze Market began.
--------------------------------------------------------------------------------
The industrial sector smelled of sulfur and rotting fish.
They navigated the subterranean maze for two hours. Kaelen relied entirely on the architectural math he memorized as a child.
Calculate slope. Measure water velocity.
The runoff tunnels bypassed the Ministry checkpoints overhead. Occasional grates offered glimpses of the smog-choked sky. Crimson flares intermittently burst above the rooftops. Malakor was still hunting them.
Kaelen dragged his heavy resin cast through the shallow sludge. His hip screamed in protest. He burned calories at a dangerous rate. The marrow in his bones ached for fuel.
Siora matched his crippled gait. She provided the physical anchor. Her stamina was immense. She did not complain. She executed the survival pact.
"Stop," Kaelen hissed.
They halted near a massive iron outflow pipe.
Voices echoed from the tunnel ahead.
Lantern light painted the curved brickwork yellow. Three men stood on a raised maintenance walkway. They wore heavy leather coats and carried rusted pipe wrenches.
Syndicate scavengers.
"They are blocking the junction," Siora whispered. "Do we fight?"
Kaelen evaluated the variables.
He had the obsidian. He could vaporize the entire walkway. But the concussive blast would alert the Crimson Coats on the surface. It would collapse the tunnel.
"No magic," Kaelen decided. "We play the role."
He adjusted his sling. He made his posture subservient. He slouched his shoulders and let his chin drop.
Siora pulled her cowl lower.
They stepped into the lantern light.
The three scavengers turned. They raised their wrenches.
"Tunnel toll," the lead scavenger demanded. He possessed missing teeth and a scarred jaw. "Nobody walks the drains for free."
Kaelen kept his eyes on the dirt.
"Shift ended at the ironworks," Kaelen rasped. He forced a pathetic tremor into his voice. "Boiler blew. Crushed my leg. Burned my arm. We have zero coin. Just trying to reach the clinic."
The scavenger stepped closer. He raised his lantern, illuminating Kaelen's rigid resin cast and the crude sling. He looked at Siora, huddled in her filthy wool cowl.
They looked entirely worthless.
The scavenger sneered. He lowered the lantern.
"Keep moving, trash," the man spat. "Bleed out somewhere else. You stink up the drain."
Kaelen did not reply. He kept his head down.
Siora dragged him past the men. They did not look back.
They reached the end of the tunnel thirty minutes later. A rusted iron ladder led up to a heavy street grate.
Siora climbed first. She pushed the iron aside. Cold winter air flooded the shaft.
She reached down, grabbing Kaelen's collar. She hauled him up onto the frozen cobblestones.
Kaelen collapsed onto the street. He gasped for air.
He looked up.
The narrow alleys opened into a massive, sprawling square.
Hundreds of canvas tents flapped in the wind. Massive, six-legged draft beasts chewed on frozen hay bales. The air smelled of burning sage, roasting meat, and heavy spices.
Beast-kin warriors carrying bone-carved spears patrolled the perimeter. They wore thick furs and displayed their feline ears and tails openly.
Ministry guards stood at the far edges of the square. They looked at the encampment with absolute disgust, refusing to cross the quarantine line.
Siora pulled her cowl back. Her ears twitched in the cold wind.
"The Bronze Market," she announced.
Two beast-kin warriors spotted her. They lowered their spears. Their eyes widened in recognition. They rushed forward, bowing their heads respectfully to the chieftain's daughter.
Siora pointed at Kaelen.
"Take him to the elder shamans," Siora commanded in her native tongue. She switched back to the empire's language for Kaelen to understand. "Tell them to prepare the marrow-binders. We break the leg tonight."
Kaelen gripped the obsidian shard in his pocket.
The reality check was over. The physical toll was due.