The air in the technical sector of the City of Bridges was stagnant, dense, and bitter, like old aspirin ground to dust. There was no wind here, yet the cold still managed to seep beneath clothing, sinking into the skin itself.
Iron sat on the chipped concrete floor, leaning against a massive shelving unit. Each breath was a struggle — not from a lack of oxygen, but from the dull, gnawing pain pulsing in his right shoulder. Carefully, trying not to growl, he unfastened the leather straps and removed his old prosthetic.
The heavy iron construct crashed to the concrete with a thunderous clatter. This “chunk of scrap,” as he now called it, had saved his life in the Citadel, but on the bridge cables it had nearly become his gravestone. Too heavy. Too slow. Its sail-like surface had almost thrown them into the abyss when a side gust caught it.
“Iron, soft tissue inflammation at the stump exceeds normal levels by forty percent,” Zeno approached, his ocular lens dimly glowing orange, cutting through the gloom of the warehouse. “You need disinfection and rest. Your biorhythms indicate exhaustion.”
“Rest will be in the grave, Zeno,” Iron snapped, wiping sweat from his brow. His remaining arm trembled. “If we meet Valerius’ hounds with this…” He nodded at the discarded prosthetic. “…they’ll tear me apart before I even cock the trigger.”
He lifted his eyes to the shelves. Zeno swept a wide beam of light over them, and Iron squinted against the sudden glare.
Before him stood containers sealed with Precursor vacuum locks. Some still bore markings he recognized — symbols he had read in the Citadel libraries, in forbidden scrolls Valerius kept under seven locks.
“Tungsten…” the boy whispered, running a finger over the cold, heavy ingot. “…and titanium. Real titanium.”
It felt like a fever. The pain in his shoulder suddenly receded, replaced by a burning, almost painful excitement of discovery. He was no longer seeing metal. He was seeing possibility.
“Ephrem, light a fire,” Iron commanded without looking back. “I need light and warmth. Zeno, activate the industrial synthesis protocol. I need your precision.”
Ephrem, wrapped in his tattered cloak, grumbled about “iron madness,” but dutifully began gathering scraps of plastic crates and rags. Soon a bluish, chemical flame danced in the center of the warehouse.
Iron sat on the floor, laying his tools before him. His mind began to accelerate. He felt the familiar itch growing behind his skull.
[Warning: Critical biomechanical imbalance detected.]
[Activating skill: The Will to Live…]
The world faded. The warehouse walls became transparent, forming a coordinate grid. Iron looked at his fingers — a system of levers and tendons. Then he turned to the titanium ingots.
“Too heavy for the frame… no, if hollowed. The ribs must run at forty-five degrees,” thoughts raced like electric sparks.
He took a piece of chalk and began drawing on the concrete floor. It wasn’t a blueprint in the usual sense. It was an anatomical map of his future pain and his future strength.
“Zeno, forget the gears,” Iron’s voice was dry and colorless. “They’re too inert. I need hydraulics. Not oil-based. Here, in the City of Bridges, air pressure is higher than below. We’ll use differential pressure.”
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“Iron, a micro-piston system of this level requires five-micron sealing,” the Golem objected, though his manipulators were already transforming, revealing thin laser-cutting needles. “My computational resources confirm: possible, but the cost—”
“I know the cost,” Iron interrupted.
He studied the schematic. The new arm would become an extension of his nervous system. Instead of coarse cables — a network of fine titanium alloy capillaries. Instead of springs — tungsten energy accumulators.
The work began.
It was a terrifying sight. In the firelight, the boy with feverish eyes commanded the massive steel monster. Zeno worked with jeweler-like precision. His lasers hissed, slicing titanium, carving components so tiny Ephrem could barely see them.
Iron assembled the nodes himself. His left hand was slick with oil and blood — he cut himself on sharp edges multiple times, yet barely noticed. He inserted micro-valves into their slots, feeling the world shrink to the size of this single mechanism.
“Why are you doing this, malek?” Ephrem asked quietly, tossing a piece of plastic into the fire. “You don’t even look human anymore. Just sitting here, talking to metal…”
Iron froze, holding a tiny tungsten rod with tweezers.
“Human isn’t flesh, Ephrem. Human is what they do. Valerius sees us as dirt to burn for his ‘great magic.’ But his magic is broken machinery he doesn’t understand. I… I want to understand.”
He placed the rod in position. A soft click sounded.
“I don’t want to be weak,” he added, quieter. “On this bridge, the weak become wind’s prey.”
By midnight, the work reached the most dangerous stage — integration.
Iron stared at the “Second Iteration.” The arm lay on the bench, gleaming matte metal. Thin, almost elegant, stripped of excess parts. The network of tubes resembled veins.
“Ready for synchronization,” Zeno stated evenly. “Iron, I must warn you. Direct connection to nerve endings without anesthesia may cause fourth-degree shock. Your brain may not withstand the load.”
“I have the skill,” Iron gritted his teeth. “It won’t let me shut down. Begin.”
He pressed the prosthetic base to his shoulder. The magnetic grips he had designed himself clamped into ports installed long ago in the Citadel.
Iron arched his back. A scream caught in his throat. This was no ordinary pain. It was as if a red-hot nail had been driven into his brain and twisted clockwise.
The Second Iteration system began equalizing pressure. Hydraulics awoke. The fine capillaries filled with fluid, and Iron felt the metal… come alive.
[Synchronization: 10%… 40%… 85%…]
[Critical CNS load!]
“Hold on, malek!” Ephrem jumped to steady him by the shoulders, but Zeno firmly but gently pushed him aside with a steel arm.
“Do not interfere. Process is irreversible,” rumbled the Golem.
Flashes danced before Iron’s eyes. Precursor code merged with his own memories. He saw his mother, fire, Valerius’ cold eyes… and then all fell silent.
The pain didn’t disappear, but it became… background. Information.
Iron opened his eyes. His face was chalk-white, a thin trickle of blood from his nose. He slowly raised his right hand.
It was light. Almost weightless.
He flexed his fingers. The titanium phalanges responded instantly, with no delay as before. He clenched his fist. Air hissed in the system, producing a whip-like snap.
Iron picked up an old steel nut from the table and simply crushed it. The metal deformed like wet clay. Effortless. Simply because he willed it.
“Incredible…” he whispered. “Zeno, do you see? No resonance. It… it obeys better than the real thing.”
“Response accuracy: 0.002 seconds,” Zeno confirmed. “You have created a field-engineering masterpiece, Iron. But the cost… look at your readings.”
Iron glanced at the skill interface still blinking in his vision.
He ignored the warning. He felt the power he had lacked atop the pillar. Now he feared the wind no longer. Now he could be the wind.
“Rest, malek,” Ephrem said, watching him with a sad pride. “Tomorrow we move again. The City of Bridges does not forgive fatigue.”
Iron nodded, sinking onto the straw. His consciousness began to fall into deep, bottomless sleep. Yet even in slumber, he continued flexing the titanium fingers, adapting to the new, cold part of himself.
He did not hear the sensors in Zeno detect movement in the corridors an hour later. He did not hear the soft whisper and shuffle of bare feet on rusted metal.
From the darkness, beyond the circle of firelight, eyes watched them. Dozens of eyes. People dressed in tatters of wire and ancient cloth froze, staring at the sleeping boy with the shining arm.
One of them, an old man whose face was etched with scars resembling circuits, dropped to his knees.
“He has come…” he whispered. “The Master of Capillaries.”
