The world ended underground with a sound like the sky tearing in half.

  When the shield coil died, Ironford screamed.

  A thunderclap rolled through the facility as the first artillery shells struck the city above—deep, concussive booms that shook the walls, burst lights, and sent cracks racing through the concrete ceiling. Dust poured down like ash in the abandoned town.

  And in the middle of it all—

  Sera came.

  Her black mech surged forward, three legs digging into the floor, blades humming as if alive. Each step ate meters of distance. Nyra, Vera, and Loran didn’t think—they ran.

  “Move!” Loran shouted, boots slipping on blood and red Magitium dust. “Don’t stop—don’t look back!”

  Nyra stumbled once, caught herself, heart hammering so loud she barely heard Vera yelling beside her.

  “The captain—!” Vera screamed, glancing back at Guren’s broken body lying amid wreckage and black fluid. “We can’t just leave him!”

  Loran didn’t slow. His voice came out raw, desperate.

  “If we stop, we die. If we die, he dies anyway. We need a mech—now!”

  Behind them, the distance vanished.

  The black mech dashed.

  Not ran—vanished, then reappeared meters closer, blade arm rising, its edge unfolding like a guillotine. The air screamed as it cut forward.

  Nyra felt it before she saw it—the pressure, the killing intent pressing down on her spine.

  Then—

  BOOM.

  The front entrance detonated inward.

  Concrete, steel, and shattered doors exploded into the chamber in a wave of debris and blinding dust. The shockwave threw all three UF soldiers off their feet, bodies slamming into the floor as the entire complex groaned.

  Through the roaring collapse and the blinding sunlight pouring in from above—

  A giant stepped forward.

  A Bulwark.

  Its massive four-legged frame filled the entrance, armor scorched and dust-streaked, shoulder plates catching the sunlight like a rising god of war. Floodlights snapped on, cutting through the haze, illuminating the devastation—and the black mech frozen mid-stride.

  Inside the cockpit, Irik’s voice cracked through external speakers, loud and panicked but alive.

  “MOVE! MOVE! MOVE!”

  The Bulwark’s main cannon fired.

  A thunderous shell tore past the black mech and detonated against the floor, obliterating pavement and throwing chunks of steel into the air. The blast forced the black mech back, its feet carving trenches as it slid, retreating behind the ruined remains of the shield coil.

  The silence that followed was razor-thin.

  Then Loran laughed—half hysteria, half relief.

  “You beautiful, stupid bastard,” he shouted. “You actually made it!”

  Nyra and Vera scrambled to their feet as the Bulwark lowered itself, side rails exposed. Without thinking, they grabbed on, fingers slipping against metal slick with dust and blood.

  Irik kept the engine roaring. “No time! Get on—now!”

  The black mech shifted behind cover, its silhouette flickering through dust and red electrical discharge from the dying coil. It didn’t charge again—it watched.

  Loran vaulted up, boots slamming against the Bulwark’s armor as he hauled himself into the open gunner seat. He slammed the hatch half-closed, hands already moving over the controls.

  “Gunner online,” he barked. “Target’s still active. That thing’s not done.”

  Nyra and Vera clung to the outer rails as the Bulwark began to move, each step shaking their bones. Above them, the ceiling cracked again as another artillery strike hit Ironford.

  The Bulwark’s engines roared, filling the ruined shield-coil chamber with a deep, animal growl.

  Across the wreckage, Sera’s black mech moved first.

  It didn’t charge in a straight line—it darted, three legs striking the floor in rapid succession as it skimmed across the chamber, light and predatory. Its frame bent with each movement, micromachine armor flowing like muscle rather than metal.

  “Fast,” Irik muttered, hands tight on the controls. “Too fast.”

  The black mech’s cannon unfolded from its arm in a liquid ripple.

  A sharp, rising whine filled the air—

  THOOM.

  An electromagnetic shell tore through the chamber and slammed into the Bulwark’s frontal armor.

  The impact shook the cockpit violently. Nyra yelped as she was thrown sideways, Vera collided into Loran, and warning lights flashed across the HUD.

  But the armor held.

  The shell detonated into a violent blue-white flare, dispersing across the Bulwark’s reinforced frontal plate like water against a cliff.

  “Minimal damage,” Loran called out, scanning. “Didn’t even breach the outer layer.”

  Irik exhaled sharply. “Told you—frontal’s a brick wall.”

  The black mech didn’t wait to see if the shot worked.

  It ran up the wall.

  Magnetic feet locked on as it sprinted sideways along the curved, cylindrical interior of the chamber, sparks tearing from its steps. Sera’s distorted laughter crackled over open comms, echoing unnaturally through the room.

  “Everyone down!” Loran shouted, slamming the external speakers on. “Take cover! Hide—don’t cling to us!”

  UF soldiers scattered into the shadows and broken alcoves, diving behind machinery as another artillery strike shook the city above.

  Inside the cockpit, things got… tight.

  Nyra squeezed in first, practically falling into Loran’s side.

  “Sorry—sorry—no room!” she blurted.

  Vera followed immediately, slamming the hatch shut behind her and pressing in from the other side.

  Loran froze. “I—uh—this is—”

  Nyra elbowed him in the ribs. “Focus, gunner.”

  Vera added dryly, “If we survive this, we’re never speaking of it again.”

  If you stumble upon this tale on Amazon, it's taken without the author's consent. Report it.

  “Agreed,” Irik snapped. “Incoming!”

  The black mech leapt.

  It launched off the wall, spinning midair, blade flashing as it aimed for the Bulwark’s weak point—the narrow gap between turret and hull.

  “Brace!” Loran yelled.

  Irik reacted instantly.

  The Bulwark’s blade deployed.

  It was massive—thick, heavy, more industrial than elegant. Not designed for speed.

  But Irik didn’t swing blindly.

  He pivoted the entire Bulwark, timing the arc perfectly.

  CLANG.

  The massive blade swept through the air just as the black mech descended. Sera twisted at the last second, the blade grazing her armor and sending her tumbling across the chamber floor in a spray of sparks.

  She rolled, recovered, and sprang upward—

  Straight onto the Bulwark.

  Magnetic limbs locked on as the black mech landed on top of the turret, its cannon reforming and pressing directly against the cockpit seal.

  “Heat spike!” Vera shouted.

  The cannon fired point-blank.

  The cockpit temperature surged instantly. Panels rattled, dust poured from seams, and a section of outer plating peeled away under the blast.

  Warning icons bloomed across the HUD.

  COCKPIT SEAL: STRESSED

  INTERNAL TEMP RISING

  Nyra screamed. “I DID NOT SIGN UP TO BE ROASTED ALIVE!”

  Irik growled, slamming a control. “Loran—now!”

  The Bulwark lurched forward, then rammed itself backward into a collapsed support pillar.

  The impact was brutal.

  The black mech lost footing and was thrown off, crashing into the chamber wall hard enough to crack reinforced steel.

  Irik didn’t let up.

  He advanced, blade raised, every step crushing debris beneath the Bulwark’s weight.

  “This thing’s light,” he said through clenched teeth. “It dodges well—but it can’t push back.”

  The black mech recovered quickly, blades reforming as it charged again.

  This time, blade met blade.

  Sera struck first—fast, precise, slashing at joints and seams. Sparks exploded with every impact as her blade skidded along the Bulwark’s armor.

  Loran tracked her movements. “She’s testing gaps. Don’t let her circle.”

  “I see her,” Irik replied.

  He feinted left, then slammed the Bulwark’s shoulder into the black mech mid-dash.

  The heavier machine won the collision.

  Sera was sent skidding across the floor again, carving trenches into the metal. She laughed as she rose, distorted and delighted.

  “Slow,” her voice echoed. “But strong.”

  The black mech fired again—this time not at the Bulwark, but at the chamber supports.

  Explosions tore through the walls. The room began to collapse around them, red Magitium dust filling the air like blood in water.

  Loran swore. “She’s bringing the place down!”

  “Then we end it here,” Irik said, advancing through the falling debris.

  The Bulwark’s blade rose once more, heavy and unstoppable, as the black mech prepared to meet it—fast, fluid, and laughing.

  Steel, micromachines, and Magitium clashed as the chamber tore itself apart around them.

  The Bulwark pushed forward.

  Its massive legs crushed broken consoles and twisted steel underfoot as Irik drove it deeper into the collapsing chamber. Every step was deliberate, heavy—forcing space away from Sera, denying her the wide angles she thrived in.

  “Keep moving,” Loran muttered. “Don’t let her breathe.”

  Across the chamber, Sera retreated—but never fled.

  Her black mech sprinted sideways along fallen machinery, leaping between shattered shelves as electromagnetic shells screamed past her. Each time Irik fired, she wasn’t there anymore, her movements erratic and fluid, micromachine limbs bending in ways no conventional frame could.

  She returned fire mid-leap.

  A blue-white shell slammed into the Bulwark’s side plating.

  The impact rocked the cockpit—but again, the armor held.

  “Caliber’s too small,” Irik confirmed quickly. “She can sting us, not kill us.”

  Loran’s lips curled. “Good.”

  He fired again—not to hit.

  The shell smashed into a stack of Magitium feed housings, detonating in a violent red flash. The explosion forced Sera to veer sharply, her mech skidding into a narrow maintenance corridor—boxed in by heavy shelving on one side and collapsed machinery on the other.

  The space shrank instantly.

  Loran’s eyes widened. “Irik—she’s cornered.”

  “No,” Irik said calmly. “She thinks she is.”

  Sera reacted exactly as Irik expected.

  She lunged upward, aiming to vault over the debris—

  Irik fired.

  Not where she was.

  Where she had to be.

  The shell screamed into the corridor and detonated dead center, engulfing the space in a violent electromagnetic blast.

  The explosion tore through the passage like a hammer.

  Black micromachines erupted outward, splattering across the walls and floor like liquid shrapnel. The shockwave rattled the Bulwark, dust and debris raining down as the blast wave dissipated.

  Inside the cockpit, alarms blared briefly—then settled.

  “Direct hit,” Loran breathed. “Perfect prediction.”

  Nyra laughed shakily. “Holy—he read her.”

  As the smoke cleared, a black vapor cloud hung in the air, writhing unnaturally.

  At its center—

  Sera.

  She knelt in a pool of micromachines, coughing violently as black fluid spilled from her mouth and dripped from her chin. Her mech was gone—reduced to fragments and half-formed limbs that tried, and failed, to reassemble.

  Her left eye burned, the strange symbol within it glowing brighter as the micromachines surged around her, attempting to rebuild.

  But they faltered.

  Retreated.

  Slithered back into her body.

  She laughed weakly, distorted and broken.

  “It’s… not over.”

  Irik leveled the Bulwark’s cannon at her.

  “Don’t test me,” he warned. “I will fire again.”

  Sera didn’t respond.

  Instead, her arm melted, reshaped—

  A cannon formed.

  “INCOMING—!” Loran shouted.

  The shot fired—

  Not at the Bulwark’s armor.

  At its optical sensor array.

  The explosion burst in a blinding flash. The cockpit went dark instantly, HUD blackening as emergency systems screamed.

  “Visuals down!” Irik snapped.

  For a split second—nothing.

  Then the HUD flickered back to life.

  Rain poured through the shattered entrance of the facility.

  Outside, artillery screamed overhead.

  And Sera—

  She was limping away, her movements uneven, micromachines crawling desperately over her torn body, failing to fully mend her wounds. Each step left black streaks on the ground as she vanished into the bombardment beyond the chamber.

  Irik clenched his jaw. “Should we pursue?”

  Loran shook his head hard. “No. Radio Kael. Now.”

  He glanced around as the ceiling groaned ominously.

  “This place is coming down—and the captain’s still here.”

  Outside, surviving UF soldiers huddled beneath the Bulwark’s massive frame, pressed close to its legs and armor as artillery rained down. An eighty-ton machine loomed over them, shielding them from death by sheer mass alone.

  Loran opened the hatch.

  “Nyra—Vera—with me.”

  They jumped down into the debris-filled chamber, boots splashing through black fluid as they ran toward a motionless figure near the shattered coil.

  Guren.

  He stood—or rather, slumped—where he’d fallen.

  Blood splattered the floor around him. His uniform was torn, his body still.

  And his left arm—

  Black veins pulsed beneath the skin, spreading slowly, inexorably.

  Nyra froze. “Captain…”

  Loran swallowed hard as they approached him, the sound of artillery and collapsing steel echoing all around.

  Guren coughed.

  A wet, choking sound tore out of his chest, and blood splattered across the shattered metal floor—red, unmistakably human.

  Nyra flinched back.

  “—He’s—!”

  The blood didn’t keep flowing.

  Instead, something moved beneath Guren’s skin.

  The black veins along his left arm pulsed once—twice—and then spread outward like ink dropped in water. Micromachines slid beneath torn flesh, knitting muscle together, sealing ruptured tissue with slow, deliberate precision. Bone set. Skin closed. The pain should’ve killed him.

  Instead, Guren inhaled sharply.

  And laughed.

  A dry, hoarse chuckle escaped his throat as his eyes snapped open.

  “…Wow,” he muttered. “You guys look like you’ve seen a ghost.”

  Loran froze mid-step.

  Vera’s breath caught in her throat.

  Nyra stared, hands shaking around her rifle. “C–Captain…?”

  Guren shifted, planting his right hand against the floor. He pushed himself up—too fast for someone who should have been dead. His legs trembled, his body swayed, and for a split second it looked like he’d collapse again.

  Vera reacted without thinking.

  She lunged forward, arms outstretched to catch him—

  —and stopped herself at the last instant.

  Guren noticed.

  He smirked faintly. “Careful. I might bite.”

  “Sir…” Loran’s voice cracked despite himself. “We thought you were gone.”

  “Yeah,” Guren said, rolling his shoulder as if testing it. “So did I.”

  He straightened fully—limping, clearly weakened, sweat pouring down his face—but standing. Still himself. Still conscious.

  Nyra swallowed hard. “That’s… not possible. You’re infected.”

  Guren glanced down at his left arm.

  The black veins had spread further now, crawling just beneath the skin like living wire—but they were quiet. Controlled.

  “I don’t have an explanation,” he said honestly. “Maybe God decided to flip a coin.”

  He scoffed. “Assuming God exists.”

  Silence stretched thick between them.

  Loran studied Guren’s posture, his eyes, the way his fingers flexed. No twitching. No distortion. No hunger.

  But that didn’t make it safe.

  Guren took a step forward.

  Nyra instinctively raised her weapon.

  “Don’t,” Vera whispered sharply.

  Guren stopped, exhaling slowly through his nose. His patience thinned visibly.

  “I know what you’re thinking,” he said. “If I lose my mind—if I start twitching or smiling like that thing—you shoot me. Right here.”

  He tapped his forehead with two fingers.

  “No hesitation. No speeches.”

  Nyra’s voice shook. “Captain…”

  “But right now,” Guren continued, his tone hardening, “Ironford is burning, the shield is down, and my sister is walking around in a black nightmare suit.”

  He turned toward the exit, rain and artillery flashes visible through the ruined entrance.

  “So unless one of you wants to argue philosophy while the city dies—”

  He started walking.

  Each step was uneven. Pain clearly stabbed through him with every movement—but he didn’t stop.

  Loran hesitated… then followed.

  Nyra and Vera exchanged a glance, fear written plainly across their faces, before moving after him.

  “Sir,” Loran asked carefully, “that girl back there…”

  Guren didn’t look back.

  “Yes,” he said tiredly. “She’s my sister.”

  A pause.

  Then, with a bitter half-smile that barely held together—

  “…And let me tell you, being a big brother is a real pain in the ass.”

  Thunder cracked overhead.

  And they followed him into the storm.