The transition was not a leap, but a slow, suffocating drowning.

Jaxson Reed opened his eyes to a ceiling of weeping iron. Condensation, thick with the orange tint of rust and the bitter sting of sulfur, dripped from the corrugated metal plates forty feet above. It fell through the freezing air, landing with a sharp, metallic *tink* on the edge of the workbench beside his head.

He tried to sit up, but his motor functions refused the command. A crushing, leaden weight pressed down on his chest. When he drew a breath, his lungs burned with the cold, damp air of a cellar, and a violent wave of vertigo tilted the world ninety degrees. He rolled off the cot, his knees buckling before they even touched the oil-stained concrete. He lay there for a long moment, cheek pressed against the freezing floor, listening to the rhythmic, distant thrum of high-altitude engines. Far above the smog, the airships of the High Lords were navigating the clean sky-lanes of Aethelgard. Down here, in the deepest trench of the Oakhaven slums, there was only the cold, the rust, and the smell of rot.

*Anemia,* Jaxson thought, his aerospace engineer's brain instinctively cataloging his symptoms. *Severe, chronic iron-deficiency anemia. Red blood cell count is dangerously low. Hemoglobin levels insufficient for basic motor coordination under physical stress.*

He dragged himself up using the edge of the heavy oak workbench. His hands were thin, the skin pale and translucent, mapped by a network of faint, dark veins. These were not the hands of a thirty-four-year-old materials engineer who had spent his life in sterile, climate-controlled laboratories designing composite airframes for Earth’s next-generation aircraft. These were the hands of a malnourished twenty-year-old scrap gladiator—a throwaway pilot who had died of sudden cardiac arrest in the low-tier pits, only for Jaxson's consciousness to slip into the vacant, failing vessel.

"Jax..."

A soft, ragged whimper drifted from the dark corner of the hangar.

Jaxson turned his head, fighting another wave of black spots that danced across his vision. Huddled beneath a pile of threadbare canvas blankets was Ellie. She was fourteen, but her frail frame made her look barely ten. Her dark, messy hair was tied back with a piece of salvaged copper wire, her hollow cheeks flushed with a feverish, unnatural heat. Even in the dim light, Jaxson could see the terrifying silver-black lines tracing up her throat—the unmistakable, weeping lesions of advanced alchemical blood-rot.

She was shivering violently. The air inside the hangar was rapidly dropping toward sub-zero, and the breath leaving her lips formed thick, white plumes in the dark.

"The... the stove went quiet, Jax," she whispered, her teeth chattering so hard the sound clicked in the quiet room. "It's cold."

Jaxson looked toward the center of the room. The Reed Hearth-Core—a bulky, circular heating unit built from a salvaged C-class industrial thermal regulator and a web of mismatched copper piping—was dead. A faint, ominous *hiss* vibrated through its chassis, accompanied by the sharp, rotten-egg stench of uncombusted alchemical sulfur gas.

If the stove stayed dead, Ellie wouldn't survive the night. Her compromised immune system, already fighting the crystallization of her blood, would fail.

Jaxson forced his trembling legs to lock. He took a step forward, but his left hand began to shake uncontrollably—a violent, systemic tremor that made his fingers twitch. He clamped his right hand over his left wrist, squeezing until the bone hurt, forcing the muscles to submit to his will.

"I've got it, Ellie," he said. His voice was raspy, dry as sandpaper. "Just stay under the blankets. Don't breathe too deeply."

He approached the Hearth-Core, his mind already shifting into diagnostic mode. He didn't know magic, and he didn't care for the mystical explanations the local tech-mages used to justify their exorbitant repair fees. To Jaxson, everything was a system of heat, pressure, fluid dynamics, and material limits.

He knelt beside the iron stove. The unit operated on low-grade alchemical fuel oil, which was vaporized and ignited across a series of runic copper coils. But right now, the primary regulator valve was silent. The hiss was coming from the secondary bypass line—a sign that the main alchemical regulator was completely clogged by heavy-metal soot and crystallized sulfur residue.

He reached for his late father's toolbox on the shelf, but his fingers slipped. He had zero *Copper-Bits* left. He had searched every corner of the hangar earlier; they were completely broke. There was no money to buy clean, refined fuel, let alone the stabilized iron-broth Ellie needed to keep her blood-rot from flaring. They were living on the absolute margin of survival, in a system designed to grind them into scrap.

Suddenly, Ellie let out a wet, hacking cough. She pulled the blanket to her mouth, and when she pulled it away, the fabric was stained with a fine, glittering silver-black dust.

*Blood-rot crystallization,* Jaxson's chest tightened. *The magnetic pull from the city's central siphons is extracting the iron from the soil, the water, and her very veins, leaving behind these toxic alchemical crystals. I need to get her real medicine. Now. But first, I have to fix this damn stove.*

He picked up a heavy brass wrench. He tried to unscrew the regulator casing, but the damp cold had seized the threads. He pulled with all his meager weight, but his anemic muscles burned, and his vision swam. He stopped, closed his eyes, and took three slow, shallow breaths to maximize what little oxygen his blood could carry.

*Leverage,* he told himself. *Don't use brute force. Use physics.*

He found a three-foot length of discarded iron pipe on the floor. He slipped it over the handle of the wrench, creating a crude breaker bar. He positioned himself, braced his feet against the concrete, and leaned his entire body weight onto the end of the pipe.

*Creak.*

The seized brass threads gave way with a sharp metallic snap. Jaxson unscrewed the casing, revealing the internal alchemical regulator. It was a disaster. The tiny, runically carved nozzle was packed tight with a black, tar-like sludge—the byproduct of burning cheap, unrefined scrap oil.

He tried to scrape it out with a wire brush, but the residue was too hard, crystallized by the sudden drop in temperature. He tried to strike a match to burn it off, but the damp, freezing air of the hangar instantly extinguished the weak alchemical flame.

*I can't clean it,* Jaxson realized, his brow furrowing as he analyzed the flow path. *The nozzle's orifice is too small, and the material has undergone a phase change into a solid crystalline state. I don't have the solvents to dissolve it, and I don't have the heat to melt it.*

He looked at the copper piping. The fuel oil was gravity-fed from a drum mounted on the wall.

*If I can't go through the regulator, I have to bypass it.*

He grabbed a pipe cutter from the bench. His left hand was shaking violently now, the tremor traveling up his forearm. He bit his lip until he tasted copper, focusing every ounce of his cognitive energy on stabilizing his wrist. He cut a section of the copper feed line before it reached the clogged regulator. Then, he found a flexible copper tube and bent it into a precise, U-shaped loop.

He was going to feed the fuel oil directly into the primary combustion chamber, bypassing the runic regulator entirely.

"Jax..." Ellie whispered, her voice growing fainter. "The air... it smells like bad eggs."

"I know, Ellie. Hold your breath for a second."

He had to work fast. The uncombusted sulfur gas was building up inside the hangar. He took the flexible copper tube and aligned it with the burner inlet. But without the regulator, the fuel flow would be completely unrestricted. If the pressure spiked, the Hearth-Core would suffer a catastrophic thermal runaway and explode, taking the entire hangar with it.

He needed a mechanical throttle.

He looked at the old manual thermal valves on the side of the stove. They were designed to adjust the air intake, but if he reversed the flow direction, he could use the air valve as a crude needle valve to restrict the liquid fuel instead. He quickly disassembled the air valve, flipped the internal brass cone, and threaded it directly into his copper bypass line.

His fingers were numb from the cold, and the metallic grease made everything slick. He dropped the small brass nut twice, hearing it clink into the dark corners of the floor. He didn't look for them. He used his Runic Multimeter's magnetic probe to drag the nuts back, his heart hammering a frantic, irregular rhythm against his ribs.

He tightened the final fitting. The bypass was in place.

"Now," Jaxson muttered, reaching for the alchemical sparker.

He turned the modified air valve, allowing a trickle of the dark, heavy fuel oil to flow through the copper tube. He could hear it dripping into the combustion chamber. He held his breath, positioned the sparker near the intake vent, and struck the flint.

*Spark.*

Nothing. The cold was too deep; the fuel oil's viscosity was too high to vaporize.

*Think, Jaxson. It needs a pre-heater.*

He grabbed his father's old soldering torch, fueled by a tiny, pressurized pocket of gas. He ignited it, the small blue flame hissing in the dark. He held the torch directly under the copper bypass tube, heating the metal until it glowed a dull cherry red. The fuel oil inside began to boil, vaporizing instantly into a highly flammable gas.

He struck the alchemical sparker again.

*Fwoosh!*

A bright, clean blue flame erupted inside the Hearth-Core's combustion chamber. The copper heating coils began to glow, and the heavy, metallic hiss of uncombusted sulfur was instantly replaced by the deep, comforting roar of stable thermodynamic combustion. The exhaust fan, powered by the heat differential, began to spin, drawing the toxic fumes out of the hangar and venting them into the dark sky outside.

Jaxson slumped back against the workbench, his chest heaving. His left hand was still trembling, but a wave of warm, clean air was already radiating from the iron stove, pushing back the damp chill of the hangar.

Ellie let out a long, shuddering sigh, pulling the blankets tighter as the warmth reached her corner. Her shivering began to slow, the feverish flush on her cheeks softening.

"You did it," she murmured, her eyes half-closed. "It's warm, Jax. It feels like... like when Dad was here."

Jaxson didn't answer. He closed his eyes, resting his head against the cold wood of the workbench. He had stabilized the system temporarily, but the fundamental problem remained. They had no food. They had no money. The fuel oil in the drum would only last three days, and Ellie's blood-rot was progressing. He was a transmigrated engineer trapped in a dying body, in a world that treated them as disposable fuel for the sky-arenas.

He needed a tool. He needed a leverage point to break this system.

As he reached down to clean the grease from his hands with a soiled rag, his foot knocked against a loose concrete floorboard near the base of the workbench. It gave way with a hollow, wooden clatter.

Jaxson frowned. He knelt, pulling the loose board away. Hidden in the dark space beneath the floor, wrapped in a thick, oil-stained canvas cloth, was a heavy, rectangular object.

He pulled it out, untying the greasy twine.

It was a worn, leather-bound book. The cover was scarred by acid burns, but the gold-embossed letters on the spine were still legible: *Arthur Reed — Engineering Logbook & Field Notes.*

Jaxson opened the cover. The pages were filled with his late father's dense, precise handwriting, interspersed with hand-drawn runic sketches, complex wiring diagrams, and metallurgical phase diagrams of forbidden alchemical alloys. Arthur Reed hadn't just been a low-tier scrap mechanic; he had been an industrial engineer who had spent years studying the ancient, pre-collapse machinery of the floating continents.

Jaxson flipped through the pages, his eyes scanning the technical notes. The calculations were beautiful, utilizing a custom alchemical cipher that combined traditional runic algebra with modern structural drafting. It would take days to fully decode, but as he reached the very last page of the journal, the handwriting changed. It was hurried, jagged, written with a trembling hand.

There was a crude, hand-drawn map of Rufus's Salvage Yard—the massive, chaotic scrap heap where Jaxson occasionally scavenged for spare parts. A heavy, dark ink circle was drawn over the most dangerous, restricted sector of the yard—the deep, toxic trench where the high-cities dumped their industrial waste.

Underneath the map, a single, chilling sentence was scrawled in faded black ink:

*The key lies beneath the bleed. Do not let Silas find the Ferrum.*