The industrial silence of the inner sector was shattered not by a gunshot, but by the shriek of metal grinding against metal as the Thresher walker tore through a hab-block wall. It was a three-legged monstrosity of rusted steel and hydraulic fury, standing nearly fifteen feet tall, its movements jerky and violent. The sound of that impact was persistent enough to set Mike’s teeth on edge, a mechanical roar that echoed through the hollowed-out ruins of the sector. A young girl, a Sifter no older than Mike had been when he first began coughing up rust, was pinned under the falling debris of a collapsed staircase. She stared up into the glowing red optic sensor of the machine, her small face pale beneath a layer of soot and the ever-present grime of the Heap. Above her, the machine raised a heavy, hydraulic pile-driver arm, the pistons hissing with a lethal, rhythmic pressure that seemed to count down the final seconds of her life.

  Mike crouched in the rafters forty feet above the kill zone, his fingers digging into a rusted beam until the metal groaned under his grip. The sensation of the cold iron against his palms was the only thing keeping him grounded as he stared down at the scene of impending slaughter. Through the neural link, he felt Grim’s tension. The Reaver was a coiled spring of obsidian muscle and sapphire light, lurking in the pitch-black alcove of a ventilation shaft just feet away from the girl. Grim was waiting, his predatory instincts screaming for the order to strike, but the weight of the situation held them both in a state of agonizing stillness.

  "Michael, he is baiting you," the voice of Valerius echoed in his skull. The signal was cold and clinical, vibrating against his eardrums like a tuning fork. "The statistical probability that Rigg has calculated your path is ninety-eight percent. If the Reaver intervenes, you reveal your position. Let the unit remain in the shadows. The civilian is an acceptable loss in the pursuit of the primary objective."

  Mike ignored the logic of the machine. The fluttering fear in his belly had been a companion for so long it was almost part of him, but it was being eclipsed by a cold, hard resolve. He watched the walker, its rusted joints protesting with every micro-adjustment as it centered itself over the child.

  Rigg’s voice boomed over the walker’s external speakers, distorted by static and a jagged, manic edge that made the hair on Mike's neck stand up. "I know you're out there, Sifter! I can smell the rot on you from here! For every minute you stay hidden, I liquidate another block. I’ll turn this whole sector into a graveyard just to find your trail. Starting with this little scrap-rat."

  The walker’s arm hissed, steam venting from the elbows as the pile-driver began its slow, inevitable descent toward the girl’s chest. The sight of it made Mike’s breath hitch, the air in his lungs feeling as thick and toxic as the brown smog outside.

  "No," Mike whispered. His voice was lost in the roar of the machine, but the command was felt through the tether.

  Grim didn't wait for a formal command. He ghosted out of the darkness, a blur of matte-black shadow that moved faster than the human eye could track. He didn't go for the cockpit or the pilot; instead, he threw himself between the hydraulic strike and the child. It was a move of pure, selfless instinct that mirrored the very core of what Mike was trying to protect.

  The impact was sickening. The walker’s heavy blade-arm slammed down, and though Grim was fast, the sheer mass of the mining rig was overwhelming. The jagged steel edge bit deep into Grim’s shoulder, the force pinning the Reaver to the concrete floor with a sound of cracking stone and shrieking metal that reverberated through Mike’s own skeleton.

  Mike’s world exploded in white-hot agony. He didn't just see the strike; he felt the steel tear through the connection. His mind grasped at the tether, and he pulled with everything he had. He forced the Pack Bond to its absolute limit, demanding the system transfer the entirety of the trauma to his own frame. He would not let the creature break.

  This story has been unlawfully obtained without the author's consent. Report any appearances on Amazon.

  As the blade sank into Grim’s obsidian hide down in the light of the flares, a massive, jagged gash erupted across Mike’s own shoulder in the dark rafters. It wasn't a clean cut; it was a mirrored trauma, as if an invisible version of that heavy steel blade had just carved through his muscle and bone. Blood, darker and thicker than any human’s should be, sprayed against the rusted beams. Mike staggered, his breath hitching as he felt the weight of the Thresher’s strike trying to crush his own skeletal structure. The pain was a jagged claw tearing through his nerves, and he tasted copper and bile as his knees buckled against the cold iron of his perch.

  Below, the redirection of the damage saved Grim’s life. With the kinetic force and the devastating tissue damage absorbed by Mike’s own body, the Reaver’s obsidian bones didn't shatter under the three-ton pressure of the walker. Instead, Grim lunged upward with his free arm, his claws glowing with a faint, predatory blue as he raked them across the walker’s primary optic sensor. A shower of sparks and shattered glass erupted from the machine’s face.

  The machine bucked like a wounded animal, its red light flickering as it let out a mechanical roar of frustration. Grim didn't stay to finish the fight. He reached down with his uninjured arm, hauled the girl from the debris with a single, powerful tug, and vanished back into the smoke and shadows before the walker could recalibrate its remaining sensors.

  But the damage was done. Rigg had seen the spray of dark blood from the rafters above. The walker swiveled its head toward the ceiling, the internal gears grinding with predatory delight as it locked onto the heat signature of Mike’s bleeding form.

  "I felt that, Sifter!" Rigg laughed over the intercom, the sound echoing through the ruins. "I know you're hurting! I can feel the leash tightening on your neck! Let’s see how many more blockades your chest can take before you finally break!"

  Mike leaned his forehead against the cold metal beam, his vision swimming in shades of violet and gray. He could feel Grim’s fury through the tether, a cold, murderous rage that matched the white-hot heat in his own chest. He wasn't just a mechanic anymore. He wasn't just a tamer of vermin. He was the anchor of a pack, and Rigg had just made the mistake of drawing blood from the heart of it.

  "Valerius," Mike thought, his resolve hardening into ice despite the steady pulse of blood leaving his body. "Tell me we're close. Tell me the saturation is high enough."

  "Genetic saturation is at ninety-nine percent," the AI replied. Its voice bordered on a metallic sneer of respect, a rare shift in its usually flat delivery. "Your self-destructive behavior and the high-stress trauma of the bond have accelerated the evolution process. You are on the verge of a breakthrough, though I doubt your current biology will survive the transition if you continue to act as a shield for Grim. You are leaking more than blood, Michael. You are leaking efficiency."

  "Just watch me," Mike whispered, pulling himself upright.

  He looked down at the walker, which was now beginning to charge its thermal lance for a second strike at the ceiling. The air began to hum with ionized energy, a low-frequency vibration that he could feel in his teeth. He didn't move to run. Instead, he watched the gash on his shoulder begin to itch. It was a strange, burning sensation that wasn't healing; it was changing. The blood dripping from his wound hit the floor, and where it landed, the metal hissed and began to smoke.

  Rigg thought he had him trapped in the dark. He thought he knew the limits of the boy who fixed water filters and ran from shadows. He hadn't seen what happens when the vermin stop hiding and start to hunt. Mike’s eyes began to glow with a faint, dangerous violet light as he prepared to show Rigg exactly what a monster looked like when it was backed into a corner.

  The heat from the charging lance below began to warp the air, but Mike felt a different kind of fire spreading through his veins. The transition was coming, a tidal wave of genetic rewriting that promised to turn his agony into an apex. He took a breath of the toxic air, feeling the weight of the sector on his shoulders, and waited for the world to break.