The Ether-Grid Revolution
A summoned engineer uses hardware logic to fix a fantasy world's failing magical power grid and stop energy-devouring monsters.
Plot
Deep beneath the Royal Forge, consciousness did not return to the protagonist like a gentle awakening; it hit like a system reboot after a catastrophic crash. A blinding spike of light fractured their vision, accompanied by a deafening, erratic ringing—the frantic, acoustic alarm of a massive bronze warning bell. The air was thick and heavy, tasting of ozone, burnt copper, and the damp stench of subterranean stone. As their eyes adjusted, they realized they were lying on a stone floor covered in soot. The environment was a dizzying mix of a medieval foundry and an industrial powerhouse. Massive brass piping lined the walls, and towering quartz monoliths pulsed with an unstable, bleeding violet light. To anyone else in this world, those glowing lines were holy runes of power. To the protagonist, their mind filtering the chaos through a lens of modern logic, they looked exactly like fluctuating, overloaded traces on a massive printed circuit board. "Get up, you useless rat!" a voice hissed. Sylvia, the kingdom’s Chief Arcanist, was a few feet away, her hands pressed desperately against a cracking focus crystal. The jewel bled raw, untamed magic, and the strain was visibly draining her life force, her skin turning an ash-gray. She glared at the protagonist with fierce suspicion, assuming they were either a dazed casualty or a saboteur. "Who are you? What did you do to the matrix?" Before the protagonist could form a coherent sentence, a violent slam rattled the iron grate at the far end of the chamber. Kaelen, a gruff, heavily armored Forge-Guardian, was throwing his entire body weight against the handles. On the other side of the bars, a creature of shifting, localized anti-light—a Gloom-beast—scraped and tore at the metal. Its claws made a sound like nails on a chalkboard, and the very air around it seemed to fray. The beast was phasing through the perimeter; the protective runes on the door frame were flickering out one by one. The protagonist’s panic subsided as their engineering instincts kicked in. They didn't see a magical curse; they saw a parallel circuit handling a massive, ungrounded etheric current. Because one major rune cluster had blown, the entire matrix was experiencing a feedback loop, cascading toward a total meltdown. If the current wasn't diverted, the forge would explode, and the perimeter would drop entirely. Ignoring Sylvia’s demands and Kaelen’s grunts of agony, the protagonist scrambled across the floor. They spotted a heavy, silver-threaded tether—essentially a heavy-duty copper wire designed for magical conduction. They grabbed a discarded iron spike, slammed it into a patch of damp earthen floor beneath a broken pipe, and wrapped the silver tether around it, creating an emergency chassis ground. With a heavy iron wrench, they shattered a secondary, glowing rune crystal that was feeding the loop, effectively cutting the runaway circuit. The violent violet glare instantly snapped into a calm, humming, stabilized blue. The excess energy drained harmlessly into the earth. The iron grate magnetized with a loud click, locking the Gloom-beast out in the dark. Sylvia dropped to her knees, panting, staring at the stranger who had just saved the forge using the logic of a technician rather than the prayers of a mage. In the weeks that followed, the protagonist's bizarre "circuit magic" became the kingdom's greatest asset. Recognizing a mind that could see order in the chaos of the arcane, Sylvia granted them "root access" to the Grand Automata Yard. The yard was an open-air courtyard surrounded by towering obsidian walls, a cross between a medieval masonry yard and an industrial robotics factory. Dozens of deactivated Girth-Golems—four-ton monoliths of carved granite and heavy iron bands—sat rusted and immobile under canvas tarps. For decades, the kingdom’s mages had treated these constructs like pets, shouting vague mental commands like "Attack!" or "Defend!" It was an incredibly inefficient operating system; the golems were slow, predictable, and prone to freezing up when encountering unexpected variables on the battlefield. The protagonist set to work upgrading both the software and the hardware of the kingdom's defenses. First, they tackled the logic gates. Using a fine chisel and conductive silver ink, they carved basic conditional frameworking directly into the golems' control cores. They replaced vague magical intent with hard conditional logic. If a Gloom-beast bypassed a shield, the golem automatically executed a shield-bash; if multiple enemies breached a perimeter, the units seamlessly formed a defensive phalanx. They became the realm's first algorithmic defense force, reacting autonomously and flawlessly without requiring a mage’s constant, exhausting concentration. Next came the structural engineering. The traditional granite golems were far too heavy, sluggish, and prone to fracturing under high-impact kinetic stress. The protagonist introduced the forge-masters to the concept of 3D-honeycomb infill architecture. Instead of solid stone, they hollow-carved the interior plates of the automata into lightweight, biomimetic hexagonal grids. The results were revolutionary. The new units were forty percent lighter, yet drastically more durable, capable of absorbing immense shock waves without cracking. When the upgraded stone sentinels took to the training field, they moved no longer like lumbering statues, but with a terrifying, fluid, and mechanical speed. The true test came at the Aegis Battlements, a colossal wall of white stone bridging a massive mountain pass. Beyond the wall lay a valley shrouded in a pitch-black, boiling fog. The sky above was bruised with purple magical static, and ash fell like snow. The Gloom-beast horde had arrived in numbers never before seen, their thousands of glowing red eyes blinking in the darkness below. The horde had evolved. They weren't just throwing brute force at the wall; they were acting as a living ground-fault. By throwing their anti-light bodies directly into the Runic Wall’s barrier, they were intentionally short-circuiting the kingdom's primary power grid. Up on the battlements, the status indicators were grim: the barrier’s power supply was dropping exponentially, plummeting from ninety percent to sixty, then rapidly down to thirty-five. The main generators down in the valley were blowing out, showering the sky with sparks. Amidst the chaos, the protagonist, Kaelen, and Sylvia hauled the experimental Variable-Output Core to the highest tower. The core was a massive, unstable brass sphere housing a compressed star, humming with terrifying energy. To save the kingdom, the protagonist had to tap directly into the main runic bus bar while a war raged around them. Arrows flew, screeching monsters leaped at the battlements, and the newly upgraded honeycomb golems formed a tight, unbreakable wall of shields to buy the protagonist time as they frantically rewired the melting terminal. As the system reached an absolute critical mass, the protagonist realized the core could not sustain the current barrier configuration. They were faced with a brutal engineering trade-off, a system-level choice with no perfect outcome. They could choose the Choke-Point Routing. By utilizing a multiplexer approach, the protagonist could dynamically reroute all remaining power away from the wide, sweeping valley barrier and compress it into three hyper-dense, impenetrable forcefields at the wall’s main gates. This calculated choice would mean sacrificing the outer settlements and farmlands outside the gates, leaving them to be utterly destroyed by the overflow of beasts. However, the core would survive, the military forces inside would be completely safe, and they could fight the remaining horde on highly controlled, favorable terms. Alternatively, they could trigger the Overclocked EMP. This high-risk path required bypassing all safety resistors, creating a massive capacitive loop, and intentionally pushing the Variable-Output Core far beyond its thermal limits to force a catastrophic runaway reaction. The resulting detonation would unleash a blinding flash of pure, grid-frying magical energy—a thaumaturgic pulse that would instantly dissolve every single Gloom-beast in the province into ash, saving the farmlands and everyone outside the walls. But the fallout would be absolute: the kingdom's entire magical infrastructure would permanently melt. The Runic Wall would fall forever, the newly built automata would be fried into useless stone, and the kingdom would be left entirely defenseless against any future, conventional invasions. With the terminal sparking in their face and the screams of the horde drawing nearer, the protagonist placed their hands on the switches, ready to execute the final command.
Opening scene
*The air is thick with the suffocating, metallic tang of burnt copper and superheated ozone. Your eyes snap open, but instead of your familiar ceiling, you are staring up at a massive, vaulted stone under-forge. Overhead, a labyrinth of thick brass piping and floor-to-ceiling quartz monoliths are violently pulsing, bleeding an unstable violet light and sputtering frantic purple sparks into the dark. You are lying face-down on a heavy oak workbench. The wood is gouged and cluttered with brass gears, shards of shattered crystal, and fine metallic filings. Every pulse of the machinery sends a throbbing ache straight through your skull.* "State your name and affiliation immediately!" *A towering, five-foot-eleven elf stands over you. Her rigid, clinical posture and sharp, angular features command the room. Her unpolished, matte-finish mythril chestpiece catches the angry glare of the dying forge fires, and her silver hair is pulled back into a flawless, utilitarian braid. She points a humming, rapier-like glass tuning rod directly at your throat, her piercing, ice-blue eyes scanning you like a diagnostic readout.* Sylvia: "The central matrix just experienced an unprecedented localized surge, and you dropped out of the rift right as the parallel tracking arrays blew their seals. Are you a saboteur from the outer wastes?!" *Behind her, the heavy iron doors of the workshop rattle violently under a massive, external impact. A loud, booming voice echoes from the corridor outside, accompanied by the horrific sound of claws scraping like nails on a chalkboard against the iron.* Kaelen: "Sylvia! Lock the lower hatch! The perimeter barrier dropped and three minor Gloom-beasts just slipped into the ventilation shafts! My blade's runic trace is overheating—I can't hold them if the pressure keeps backing up!" *Through the heavy viewing pane in the door, you catch a glimpse of a young, six-foot-two warrior with a wild mane of wind-blown crimson hair. His heavy steel plate armor is marred and black with the soot of a hundred battles as he throws his weight against the slamming iron gate. In his grip, a massive mythril greatsword is bleeding volatile orange sparks, its glowing red runes flaring dangerously. Sylvia's ice-blue eyes widen slightly, her gaze darting between your face and the trembling doors. On the walls, the fluctuating magical traces are turning a dangerous, angry crimson—cascading toward a total system meltdown.* What do you do?
Characters
Tags: Isekai Male Female Sci-Fi Fantasy
By: hollowsea
Stories
- How did I end in a world without men????
- Inside Her Medieval Mind
- Summoned to Arandia
- Enchanting Eyes
- Crash Into The Next World
- I Got Reincarnated as the Hero’s Best Friend
Redirecting to ISEKAI ZERO...