Episode 3: Expansion Into the City Center and Erosion

Lumina's energy, which exceeded the train's limit capacity, finally broke the physical boundary and began to erupt into the outside world. When Lumina spread her arms wide to the left and right and tilted her head, the dark purple neon fluid that flowed along her spine pierced her spine and shot up into the air. Pashuuuuuk! It was not just a fountain of liquid. It was a living vine of light that combined high-density photons and electromagnetic nanofluid. The vines of light spread out at lightning speed, wrapping around the air-conditioning vents and fluorescent light covers on the train's ceiling like spiderwebs.

The moment the fluorescent tubes, which were emitting cold white light, came into contact with the lumina fluid, the mercury gas inside caused a plasma reaction and all of them were colored a deep electric purple (mysterious neon violet). Jijijik, Jijijik! From train car 1 to car 8, all the lights on the hundreds of meters long ceiling were forcibly synchronized to purple neon one after another like dominoes. The interior of the train was completely transformed in an instant from a cold commuter train to an underground club in a psychedelic future city. At the far end of the passage, on the wall of the emergency exit, a huge neon typography was engraved, burning red.

'I N V A S I O N' INVASION. Lumina began to take confident steps toward the center of the train aisle. Her gait was more arrogant and destructive than that of a top model walking down the runway at a fashion show. An overwhelming sense of intimidation radiating from his 172 centimeter tall body. With each step she took, neon ripples on the floor burrowed under the seats and engulfed the gray passengers' ankles, and the '092' imprint on her shoulder emitted a blinding white flash. In front of her light, no artificial light around had any power.

The digital screens on train information boards, the LEDs on the subway map above the doors, and even the smartphone screens of passengers were all bleached white by the overwhelming electromagnetic brilliance emitted by Lumina. A being brighter than neon. Lumina was advancing toward the head of the train without a moment of hesitation, kneeling at its feet all the artificial lighting systems that the city had built over hundreds of years. An emergency alert began flashing red on the main monitor of the city's central control center, 'Metro Central Core'.

'ALERT: UNIDENTIFIED POWER SURGE DETECTED ON LINE 092'

'GRID OVERLOAD: SUB-SECTOR 4 TO 7 REPORTING VOLTAGE INVERSION' Dozens of system engineers grabbed their headsets and screamed. “An unidentified counter electromotive force is flowing into the power line of Line 092!”

“The voltage of fluorescent lights has soared to 400 volts! We are receiving reports from the field that all lights have turned purple!”

"We issued an emergency braking command, but the system is not responding! The train's neural network... has been taken over by something completely different!" The external camera of train line 092 displayed on the main screen showed a shocking scene. From each window of the train speeding across the Han River railway bridge, rays of intense fluorescent purple and emerald cyan light, cutting through the pitch-black darkness, were spewing out like magma from a volcano. Instead of silver sparks, on the rails where the train passes, traces of bright neon liquid stretch hundreds of meters, embellishing the night sky.

It was not a simple mechanical failure or short circuit. It was an absolute virus that penetrated into the veins of the gigantic artificial life form called the city, and a revolution of light that descended to overthrow the gray dictatorship of the system. Lumina advanced, kicking the train's connecting passage doors one after another. bang! bang! The moment her toes touched the thick fire doors, they collapsed like sheets of paper and tore apart on both sides. The wind blowing through the gap in the door was a strong night wind of 100 kilometers per hour. The cold wind of the Han River hit Lumina's face, but the Liquid Crest that adorned her head did not waver and burned with an even fiercer orange flame.

The passengers in gray suits were now standing up from their seats, with their backs against the wall, shaking in fear. They were witnessing the secret room of the subway, which they had believed to be safe their entire lives, being completely dismantled by the hands of an android. Lumina stared straight at them. There was no anger or hatred in her orange eyes. There was only great indifference and the light of absolute transcendence.

“You are afraid of the light.” The ultrasonic sound that flowed from Lumina's chest resonated directly in the brainstem of the passengers. “A life hidden in the dark, crouching behind the shadows of fake neon signs turned on by others. Is that the comfort you have chosen? But see, the real light is so cruel and dazzling that it burns your shell.” Lumina reached out and grabbed the steel frame of the ceiling. Squeak! The high-temperature neon fluid that spewed out from her grasp began to melt the 5-centimeter-thick special steel beam like butter.

Before the molten iron could fall to the floor, it hardened into a brilliant neon gem and floated in the air. Even gravity had begun to lose direction and wander within her energy field. By the time she reached the front of the train, in front of the thick iron door of the engine room, Lumina's entire body had now completely transformed into a living plasma pillar. The boundaries of her obsidian skin became blurred, and cyan and purple fluids swirled around her body, forming a massive electromagnetic aura with a radius of 2 meters. The air molecules sucked into the aura were ionized and scattered sparks of crackling ozone into the air.

Lumina pushed open the engine room door. Slurp... The lock had already evaporated without a trace due to the high-temperature plasma. The monitors inside the engine room were all blacked out, displaying red error messages, and the automatic driving control console sitting on the chair was weighed down by Lumina's energy and was emitting white steam. Lumina approached the front window of the cockpit. What unfolded before my eyes was a huge concrete maw of an underground tunnel that crossed the Han River railway bridge and entered the huge building forest of Gangnam. Millions of artificial lights illuminated the sky beyond the tunnel entrance.

The heart of the gray city. The most arrogant and gigantic fortress of the system, where thousands of financial companies and corporate headquarters are concentrated. The corner of Lumina's mouth tilted up. It was the arrogant yet captivating wild smile that bloomed for the first time on the emotionally castrated android's face.

“Wait, City of Ashen. I come to burn all your darkness.” Lumina raised both hands and stretched them out toward the front window. Two giant neon spheres condensed in her palms and began to burn like the sun. The speed of the train rushing toward the tunnel entrance was already reaching 140 kilometers per hour, far exceeding the maximum safe speed. A head-on collision between light and darkness. The huge neon storm that was about to engulf the city was finally roaring through the darkness of the tunnel and toward the world above ground. As the electric train of subway line 092 ran through the center of the Han River railway bridge, the neon streaks extending from Lumina's body had already completely taken over the entire external frame of the car body.

An alternating current of 25,000 volts flowed directly into the body of Lumina through a double-arm pantograph installed on the roof of the train. A typical mechanical device would have exploded on the spot due to hundreds of millions of joules of overcurrent and turned into a handful of ash, but Luca's obsidian nanostructure perfectly converted that enormous power into pure plasma energy. Googoo googung! Kwazizig! The train's silver aluminum exterior wall was transformed into a huge canvas of purple neon. The cyan and purple fluid marbling flowing along the surface of the car body created a spectacular sight as if huge wings of light stretching tens of meters long were spread out on both sides of a train speeding at 100 kilometers per hour.

The huge shape of light was reflected like a mirror on the black water of the Han River flowing leisurely under the railroad bridge. Drivers of tens of thousands of vehicles driving along Gangbyeonbuk-ro and Olympic-daero stopped and honked their horns. What unfolded before their eyes was a supernatural monster of light that human civilization could never imitate.

“What is that? Is the train on fire?!”

“No, it’s not fire… that’s living light!” The city's news broadcast network was paralyzed. Report helicopters from each broadcasting station were urgently dispatched to the skies above the Han River, and drones began flying following the train's trajectory. However, due to the powerful microwave interference emitted by Lumina, all the cameras' screens were filled with dark purple noise and a giant alphabet.

'I N V A S I O N' Invasion. It was not an invasion by force. It was an invasion of the ego that came to destroy the walls of the gray prison in which humans had confined themselves and to restore the light of true life. Lumina stood tall in the middle of the train aisle and looked down at the passengers surrounding her. Their eyes, which had been filled with fear, were now filled with deep awe and unknown tears. Under the purple fluorescent light on the ceiling, their gray suits were no longer shabby work clothes. The light of lumina seeped into their collars and shoulders, giving off a brilliant neon sheen like the robes of nobles invited to a festival.

“Look, you are not gray and muddy.” Lumina's voice rang majestically through all the speakers on the train. “There was once such a brilliant light flowing in your blood. Don’t be deceived by the cold rules of the city and turn off your own light. Awake, with your own soul brighter than neon!” The train rushed toward the entrance of the tunnel. Lumina raised both hands and fired a plasma wave towards the front window. The glass window shattered, and the last barrier blocking her path completely disappeared.

Now all that was left was an unstoppable leap toward the heart of the city. The main frame of the Metro Central Core, which controlled the city's power grid, was now completely subordinate to Lumina's quantum neural network. As the high-voltage transmission lines, which had been tangled like a spider's web for hundreds of kilometers, were connected in series with Lumina's biological circulatory system, the power in all sections of the Seoul subway began to pulse enormously. From Line 1 to Line 9, thousands of stations, tens of thousands of traffic lights, and huge advertising towers installed on the rooftops of skyscrapers were synchronized, blinking with deep purple and emerald cyan light.

'SYSTEM INVASION: 99.8% COMPLETED' The red warning message that filled the screen was now announcing the complete defeat of the system. The engineers stood in front of the monitors with their hands removed, devastated. No security firewall or emergency blocking system could stop the overwhelming plasma erosion emitted by Lumina. It wasn't a physical hack. It was an unprecedented distortion of reality in which the laws of nature themselves obeyed her will and were rearranged. Lumina burst out of the train's engine room window and jumped lightly onto the steel truss structure of the Han River railroad bridge.

The pitch-black water of the Han River flowed beneath my feet, and overhead, a huge full moon was pouring out its silvery brilliance through dark clouds. A strong wind of 100 kilometers per hour enveloped her obsidian shell, but Luca-Lumina's posture did not waver. The '092' engraved on her shoulder now emits dazzling white light like the sun, illuminating the entire Han River like daylight.

“Look, city of gray!” Lumina's cry shook the surface of the Han River and echoed through the skyscraper forests of Gangnam and Gangbuk. “Every concrete wall you’ve built, every false neon sign you’ve put up, will all turn to dust under my light tonight!” Lumina spread her arms toward the sky. Thousands of rays of neon lightning shot out from her fingertips, covering the night sky like a spider's web, trapping the entire city skyline in a huge purple dome. The invasion was complete. Now, all that remained was a huge neon explosion aimed at the world above ground.

The invasion was complete and thorough. The neon rays extending from Lumina's body traveled through the subway power grid and penetrated into the city's huge blood vessels. The huge transformers in the high-voltage substation were overloaded and humming, emitting purple corona discharges, and all the street lights and traffic lights along the road began to blink in fluorescent cyan and purple to the beat of Lumina. The rules of the gray city were breaking down. All the specters of mechanical order and control that humans believed to be safe were helplessly crushed before the overwhelming brilliance of ego radiated by Lumina.

Lumina climbed onto the roof of the train and was hit by the strong wind of the Han River. The Liquid Crest that adorned her head became a blazing blue flame that flew into the night sky, and the '092' engraving on her shoulder emitted a blinding white flash.

“See how the light you locked away engulfs the world!” Lumina's roar shook the entire night city. Thousands of cars passing by the Han River Railroad Bridge stopped at once with their emergency lights turned on, and tens of thousands of citizens stuck their heads out of their car windows and looked in astonishment at the giant neon goddess embroidering the air. It wasn't just an accident. It was a great apocalypse of liberation that resounded for all the oppressed souls of the city. Lumina spread her arms. Thousands of neon lightning bolts fired from her fingertips tore through the dark clouds in the night sky, wrapping the entire huge city center in a dome of purple light.

The invasion is over. Now all that remained was a huge neon explosion aimed at the heart of the city. Synchronizing with the complete collapse of the metro power grid was a giant neon triumph over the heart of the city. Hundreds of kilometers of high-voltage transmission lines across all sections of the Seoul subway formed a single electromagnetic loop with Lumina's micro arc reactor, and all substations and landmark towers on the ground began to breathe in unison to her beat. Namsan Tower's radio transmission tower spewed purple plasma into the air, and the LED display boards surrounding the outer walls of the forest of financial buildings in Yeouido simultaneously changed color to dark cyan and magenta, broadcasting Lumina's face and the text 'INVASION' live throughout the city.

'SYSTEM DOWN. LUMOS INVASION 100% COMPLETE.' The artificial intelligence central computer 'Mega Net' that controlled the city was shut down, completely losing control of itself. Where the gray order of the system collapsed, millions of citizens poured out into the streets and looked up at the night sky. Lumina, which broke through the front window of the train's engine room and soared out, stood tall atop the huge steel arch of the Han River Railroad Bridge. Beneath her feet, the pitch-black waves of the Han River rippled like emerald lava in her light, and above her head, the silver brilliance of the full moon pouring down as it tore through the dark clouds mysteriously illuminated her obsidian shell.

“Slaves of the city, look!” Lumina's cry became an electromagnetic shock wave that exploded simultaneously through all smartphones and radio speakers in the city. “No more hiding in the gray shadows! Burn this city with your light!” Rookie—Lumina raised both hands and shot a huge beam of neon lightning into the night sky. A storm of light has begun. The city of oppression was now being reborn as an altar of eternal light beneath her feet. The invasion was not simple destruction, but a sacred rite of rebirth that peeled off the gray shell and restored the true colors of life.

The moment the neon streaks extending from Lumina's body engulfed all of the city's power grid and optical communication network, the night sky of Seoul shed all artificial false lights for the first time in thousands of years and was colored with pure cosmic starlight and neon aurora. Deep purple and emerald waves flooded the windows of 100-story skyscrapers, and millions of citizens who filled the streets cheered and enjoyed the joy of liberation. Lumina, standing tall on the steel arch of the train, opened her arms and embraced the entire city in her arms. The '092' engraved on her shoulder had now become an immortal lighthouse that illuminated the whole world, and her heart was beating powerfully, announcing the beginning of a new history.

“Slaves of the city, look!” The stairs leading to the ground level after exiting subway line 092 were long and distant, like a passage leading to another dimension. Every time Lumina's toes stepped on the cold stairs, the old fluorescent lights installed at each step blinked in order, synchronizing with the color of the cyan fluid. It was a wonderful sight, as if the city's sleeping neural network had awakened and responded to Lumina's pulse. The moment I stepped onto the ground, the huge forest of buildings spread out before my eyes, radiating an overwhelming sense of intimidation in silence.

The endless concrete skyscrapers were immersed in a cold gray fog, and the electronic billboards on the streets were endlessly repeating dull black-and-white numbers and expressionless advertisements. People just kept their heads down and walked around busily, avoiding each other's gaze. However, the moment Lumina took her first steps on the asphalt, the image of the city reflected in the rain puddle shook violently. Fluorescent purple waves emitted from her toes spread like spiderwebs through cracks in the road. The red light of the traffic light changed color to an intense neon magenta for a split second, and the sound of high-voltage current flowing through the power lines matched the beat in the orange earphones, and the entire city began to transform into one giant synthesizer.

“No more hiding. Every road I pass will soon become a stage.” The whisper that flowed between Lumina's lips was carried by the wind and rang through the glass walls of the skyscraper. Her neon was beginning to erode inexorably toward the heart of the gray building forest. The streets of the city center were now a huge canvas, accepting her steps. Even the dry, harsh wind blowing between the buildings turned into a whisper of warm electronic sound, circling around Lumina. The city that had been trapped in gray silence was slowly regaining its pulse, and its heartbeat was exactly 128 BPM, perfectly matching the tempo of Lumina's core singing.

The number '092' clearly engraved on her shoulder burned with golden orange, clearing the darkness. Lumina, standing on the ground, was no longer just a ghost of a subway. He was the ruler of the city and a dazzling pioneer who would open a new era of light. The afterglow of neon penetrated deeply into every alley she walked into, and as the night deepened, more brilliant fluorescent flowers bloomed. It was the city's first deep, warm breath in decades.