Marcus opened his eyes. The ceiling was a dull beige, mapped with grease stains and rusted pipes.

  Not the Sump. Sector 3. But Doc Halloway had brought enough of the dirt with him.

  He lay flat on a steel surgical table. The heavy industrial sedatives had burned out of his bloodstream, leaving a chemical metallic taste in his mouth. He didn't move. He just lay there, feeling the cold, dense gravity anchoring his right shoulder. Beneath his sternum, a sub-dermal lattice hummed with a microscopic vibration.

  He slowly lifted his right arm. It moved in complete silence. No grinding gears, no hydraulic hiss. He stared at the plating. It wasn't scavenged titanium. It was Ossite. The military-grade alloy absorbed the harsh halogen light rather than reflecting it. The surgical graft was flawless, a seamless merging of scarred flesh and sterile engineering.

  Marcus stared at the dark metal. The pieces of the last few weeks clicked together.

  He remembered waking up in Sector 1 General after the Jolt fight. The Redline AI scanning his vitals, the "anonymous benefactor" quietly erasing his medical debt. He had taken the deal because he needed the fifty-thousand credits to save Leo. He thought he was just another high-priced gladiator bleeding for a wealthy broker.

  But an Ossite arm and a full sub-dermal lattice cost millions.

  A sponsor didn't sink millions of credits into a fading cage fighter just to win a tournament. They did it to run a live-fire field test on proprietary military hardware. Julian Thorne hadn't bought a fighter. He had built a war machine.

  Across the room, metal clattered.

  Doc Halloway stood at his workbench, his back turned to the table. He was aggressively wrenching a stripped hydraulic piston, trying to look busy. His shoulders were rigid. His hands shook. The wrench slipped and hit the concrete floor with a sharp crack. Doc didn't pick it up. He knew Marcus was awake.

  Marcus swung his legs over the edge of the table. His rusted left knee hit the floor with a heavy, familiar clunk.

  Doc flinched, but he didn't turn around. His voice was tight, spilling out in a defensive rush. "You were dying, Marcus. The Sump gear was failing. You have Stages 4, 5, and 6 before the Semifinals. Thorne’s rivals are going to send heavy corporate assets to tear you apart. This was the only way to keep you breathing."

  Marcus didn't step forward. He just looked at the back of the doctor's head. "What was your cut?"

  Doc swallowed hard. "Access. Julian Thorne offered me Sector 1 research data. Unlimited lab time. I just had to do the installation."

  Doc was a Sump parasite. Marcus had known that since the day they met a few weeks ago. Doc viewed him as a statistical anomaly, a puzzle to be solved with duct tape and scrap. But this crossed the line from survival into ownership.

  "And what happens after the Apex, Doc?" Marcus asked. His voice was flat, wrecked like crushed glass.

  Doc stopped pretending to work. His hands dropped to his sides. He didn't answer.

  The silence filled the small chop shop. It was the only answer Marcus needed. There was no 'after.' Julian Thorne was never going to let millions of credits worth of classified Ossite walk back into the Sump to live quietly. Marcus was no longer human. He was corporate property. A permanent slave.

  Marcus picked up his heavy canvas coat from a nearby chair using his bruised left hand. He wrestled his right arm into the sleeve, the thick fabric completely concealing the matte-grey plating.

  "Marcus," Doc whispered to the wall.

  "The Sump debt is cleared, Doc," Marcus said, turning toward the reinforced steel door. "But whatever arrangement we had is dead."

  He pushed the door open and stepped out into the freezing Sector 3 rain. He didn't head for the transit lines to Sector 1. He turned his collar against the wind and started walking down. Back to the rust. Back to Sector 4.

  —

  The freight elevator shuddered as it descended, the rusted cables groaning a familiar, mechanical dirge.

  When the heavy grate finally clattered open, Marcus stepped out into Sector 4. There was no rain today, just a thick, sulfurous smog that trapped the heat and choked the narrow alleys. It smelled of fried oil, ozone, and unwashed bodies. It smelled of misery.

  It smelled like home.

  Marcus turned the collar of his heavy canvas coat up, hiding his face in the shadows of the fabric. He kept his right arm pinned tightly against his ribs, ensuring the heavy fabric concealed the Ossite plating.

  He took the long way back to his tenement block, cutting through the open-air scrap market of the lower levels. The desperation here was tangible. Emaciated scavengers huddled over rusted barrels of burning chemical waste. A vendor yelled from a corrugated iron stall, trying to peddle stripped hydraulic joints that belonged in a junkyard. Two wire-heads lay slumped against a concrete pylon, their pale skin mapped with the blackened, erratic veins of cheap Pulse knockoffs.

  Stolen story; please report.

  Marcus walked through the crowd, a ghost in the smog.

  He thought of the pristine, lavender-scented air of the Sector 1 hospital. He thought of the million-credit biological assets they bred in Overworld labs. Up there, they bought and sold human limits for sport. Down here, people sold their own teeth just to afford a synthetic meal pack.

  Marcus involuntarily clenched his left fist. The familiar, hot wire of arthritis flared in his organic knuckles.

  A pale blue text crawl instantly interrupted his vision.

  [Diagnostic: Stress markers elevated. Structural wear detected in left joints. Recommend pain suppression.]

  It was the same Redline medical AI that had monitored him, hardwired permanently into his skull. Marcus gritted his teeth and dismissed the prompt. He didn't want the pain gone. The arthritis was one of the few things he had left that was entirely his own.

  He cleared the market and reached his tenement block. The main elevator was completely dead—gutted for copper wire three days ago. Marcus took the concrete stairs.

  He reached his floor. The hallway was pitch black, the single fluorescent tube overhead shattered. Marcus stopped.

  Fifteen years in the Sump had honed his instincts to a razor's edge. The air in the corridor was too still. Then, he heard it—the faint squeak of rubber soles on concrete, and the low, oscillating hum of a charged kinetic baton.

  [Warning: Multiple hostile thermal signatures detected. Ambush probability 98%.]

  The AI told him a second too late. He already knew.

  Vwoosh.

  A kinetic baton swung out from the pitch-black alcove to his right, aimed directly at his temple.

  Marcus reacted purely on muscle memory. He dropped his weight to slip the strike and threw a right hook into the darkness, aiming for the center of mass.

  It was a catastrophic miscalculation.

  His brain expected the slight drag of flesh and the familiar delay of his own muscles. The Ossite arm had zero latency. It fired with terrifying speed, but the sheer, dense weight of the military-grade alloy threw his entire center of gravity off. Marcus stumbled forward, missing the target entirely.

  Crack.

  A second hitman lunged from the adjacent stairwell, driving a heavy baton hard into Marcus’s ribcage.

  Marcus grunted, taking the hit on his left side. He fell back against the peeling wallpaper. As his vision adjusted to the gloom, he counted the thermal outlines shifting in the dark. Five of them. Heavy hitters, wearing reinforced leather.

  They closed in, thinking the scrap-metal brawler was broken.

  Marcus stopped trying to box. He planted his rusted hydraulic left leg, creating an anchor, and let the sheer power of the hardware take over.

  The point man swung again, aiming for Marcus’s collarbone. Marcus didn't dodge. He raised his right arm, letting the baton strike the thick canvas of his coat. Thwack. The kinetic shockwave hit the Ossite plating and vanished instantly, absorbed by the sub-dermal lattice in his chest. Marcus didn't even flinch.

  The hitman’s eyes widened in the dark.

  Marcus reached out with his right hand. He didn't throw a punch; he just grabbed the man by the reinforced leather vest and shoved. He pulled his strength, trying to keep the metal hidden, but the torque was uncontrollable. The man flew backward like he had been hit by a freight train, crashing through the rotting drywall of the opposite apartment with an explosive crunch.

  The remaining four hesitated. That was all Marcus needed.

  He moved in close, using his left hand to parry and grapple, and his right arm as a blunt-force battering ram. He kept the strikes short and brutally economical. A pulled palm-strike to a jaw shattered the bone entirely. A short hook to a chest cracked ribs with the sound of snapping timber.

  It was over in twelve seconds.

  Marcus stood in the dark hallway, breathing heavily. Five men lay on the concrete, unconscious or groaning in agony. He looked down at his canvas sleeve. It wasn't torn, but the monster underneath had done its work perfectly. He felt a cold knot of terror in his stomach. He hadn't won that fight with grit or experience. He had won it because he was carrying a tank cannon into a knife fight.

  He crouched next to the last conscious hitman, a thug clutching a shattered collarbone. Marcus grabbed him by the throat with his organic left hand, hauling him halfway up the wall.

  "Who sent you?" Marcus rasped.

  The man spat a bloody tooth onto the concrete. "Morretti. Aegis Heavy Industries. You made them look bad in the Pit—"

  A pale blue text crawl flared across Marcus’s vision.

  [Diagnostic: Subject pulse rate 142 BPM. Vocal micro-tremors detected. Probability of deception: 98.4%.]

  Marcus didn't blink. He shifted his stance and pressed the thick canvas sleeve of his right arm against the hitman's shattered collarbone. He didn't even trigger the servos. He just let the dead, concentrated weight of the Ossite rest against the broken bone.

  The hitman screamed, his legs kicking out wildly as the bone ground against itself.

  "Try again," Marcus said, his voice completely flat.

  "Vargas!" the man choked out, tears of pain cutting through the grime on his face. "Vargas! He said you were weak from the fight. Said Valerius Thorne wanted all loose ends tied up before the Semifinals."

  Marcus eased the weight back a fraction of an inch. "Where is he? Sector 3?"

  The hitman gasped for air. "Yeah. The counting house. He's locked down tight—"

  [Diagnostic: Acute perspiration spike. Sustained deception markers. Probability of deception: 99.1%.]

  Marcus leaned in. The Ossite arm pressed down again.

  "No! No, wait!" the hitman shrieked. "He went to ground! He's terrified Thorne will liquidate him if you survive. He's hiding in the Blackline Bunker."

  Marcus froze. "That's down here."

  "Sector 4, sub-level nine," the man wheezed. "The elite... they own it. They use the lower levels for the dirty work. Safehouses. The Foundry. It’s all down here."

  Marcus dropped the man onto the concrete. The irony tasted like ash. The Syndicate lords sat in their penthouse suites, looking down at the Sump with absolute disgust, but whenever they needed to hide their blood, they buried it in Marcus's backyard.

  Marcus didn't even look at his apartment door. There was nothing inside he needed anymore. He turned his back on the broken hit squad and headed back down the dark stairwell.

  It was time to collect.