Chapter Text
Chapter 1: Sunday at Square du Vert-Galant
The morning sun over Paris was a crisp, brilliant amber, casting long silhouettes of the iron-wrought balconies onto the cobblestone streets below. At seventeen years old, Louis Dupain-Cheng Agreste was a boy caught between two entirely different worlds. To the rest of the city, he was the youngest son of the legendary fashion designer Marinette Dupain-Cheng and the international modeling icon Adrien Agreste. He was the brother of Emma, the poised twenty-five-year-old heir, and Hugo, the confident twenty-three-year-old. But inside his own mind, Louis lived in a quieter, more intense spectrum of colors, patterns, and sounds.
Diagnosed with high-functioning Asperger’s syndrome, Louis processed the world through a vivid filter of artistic sensory details. The roaring engines of Parisian traffic often sounded like a chaotic symphony; the texture of certain fabrics could make his skin crawl, while others felt like safety. When words failed him—which was often during the high-pressure social gatherings his family frequently hosted—he retreated to his guitar, letting the strings speak the heavy, rock-inspired emotions he couldn't quite articulate.
Today, however, was a rare and precious pocket of peace. It was Sunday, a day meant for breathing room.
Clutched tightly in Louis's arms was his fifteen-month-old son, Paxton Miles Pocket. Paxton was a cheerful, bright-eyed baby with a tuft of soft blond hair that perfectly mirrored the Agreste and Pocket family lineages. He was the result of a chaotic, life-altering night at the Littleton Community Center two years prior—a night where alcohol and ecstasy had disrupted the lives of Louis and his close friend, Polly Pocket. Though they were not a romantic couple, Louis and Polly had committed themselves to being devoted, patient co-parents. They were fiercely protective of the innocent life they had brought into the world, ensuring that baby Paxton knew nothing but absolute warmth and affection.
"Look at the water, Pax," Louis murmured, his voice a low, rhythmic cadence. He adjusted his red clasp-button jacket, the vivid rainbow and lightning bolt design on the back catching the morning light. His fingers, tipped with neat black fingernails, tapped a gentle rhythm against Paxton's small back.
Paxton giggled, his bright green eyes locked onto a passing river barge. He clutched his favorite green tree-symbol shirt and made a series of excited bubble noises, kicking his feet in his tiny navy-blue shoes. "Ba! Ba-ba!"
Louis smiled, a genuine, soft expression that rarely made an appearance around strangers. He walked down the stone steps toward the westernmost tip of the Île de la Cité, entering the tranquil green sanctuary of the Square du Vert-Galant. The park was relatively empty at this hour. The weeping willows dipped their long green fingers into the Seine, whispering against the gentle currents. For Louis, the rhythm of the river was a soothing balm, filtering out the overwhelming static of the city.
He sat down on a stone bench beneath the shade of an ancient tree, setting Paxton down on the soft grass right between his feet. "Stay close, little guy," Louis said, his hyper-observant blue eyes tracking the baby's movements. Because of his Asperger's, Louis possessed an incredible knack for pattern recognition, noticing minute changes in his environment that anyone else would ignore.
It was that exact gift that made his eyes lock onto a bizarre anomaly near the roots of the massive willow tree.
A small portion of the earth had eroded away near the river's edge, exposing a hidden, hollowed-out stone alcove. Tucked deep within the damp soil was an object that did not fit the natural geometry of the park. It was a small, ancient box, crafted from an unfamiliar dark wood and etched with glowing, microscopic runes that seemed to pulse with a faint, iridescent light.
Louis blinked, his artistic curiosity instantly piqued. He leaned forward, scooping Paxton up with one arm while reaching into the muddy alcove with the other. His slender fingers brushed against the wood. A strange, pleasant static shock rippled up his forearm, vibrating in time with the heartbeat in his chest.
"What do we have here?" Louis muttered, lifting the box into the sunlight.
Paxton leaned forward, dropping his pacifier onto the grass, completely fascinated by the shimmering runes. "Ooh! Dat!"
With a steady hand, Louis pried open the ancient latch. The lid swung back silently, revealing a plush, velvet-lined interior. Nestled inside were a series of mysterious, beautifully crafted bracelets. They looked heavy, forged from a dark, meteor-like metal that shifted colors under the direct sunlight, shifting from deep violet to a brilliant cosmic blue.
The moment the box opened, a rush of raw, unadulterated knowledge flooded Louis’s mind—not in words, but in pure, overwhelming sensory concepts. It was an ancient power, dormant for millennia, bypassing his linguistic filters and speaking directly to his hyper-focused brain.
These bracelets were artifacts of unimaginable cosmic authority. They granted whoever wore them an astonishing array of god-like abilities: unmatched super strength, blinding super speed, instantaneous teleportation, absolute hypnotism, and the effortless freedom of flight—alongside countless other hidden powers meant to be distributed to a chosen vanguard.
Louis’s breath hitched. Growing up as the youngest son of Marinette and Adrien, he had spent his entire life living in the shadow of heroic legacies. He knew his older siblings, Emma and Hugo, possessed the temperament and social grace to one day inherit the grand responsibilities of the Miraculous. But Louis? With his sensory overloads, his social awkwardness, and his intense, direct way of thinking, he had always felt inherently excluded from that world. He felt like a broken gear in a perfect machine. He believed he could never be a true hero.
Yet, here was the universe handing him a blank canvas.
He looked down at the bracelets, then looked at his beautiful, innocent son. A sudden, fierce wave of protectiveness washed over him. He didn't need a Miraculous. He had this.
Slowly, Louis reached into the box and pulled out one of the heavy metallic bands. He carefully slid it over Paxton’s tiny, fragile wrist.
To Louis’s absolute amazement, the moment the metal brushed against the baby’s skin, the bracelet hummed with a soft, golden light. The heavy band automatically compressed, its structure shifting, molding, and shrinking down with fluid precision until it became a perfect, lightweight fit around the 15-month-old's chubby arm.
Paxton gasped, staring at his wrist as a faint aura of blue and violet light rippled across his skin. He didn't cry. Instead, he let out a joyful, echoing squeal, raising his tiny hands into the air as the residual energy tickled his fingers.
Louis took a second bracelet for himself, sliding it onto his left wrist. The metal instantly adapted to his slender frame, locking into place with a comforting warmth that instantly stabilized his fluctuating sensory boundaries. For the first time in his life, the noise of the world fell completely silent. His mind was perfectly clear.
He looked at his son, his blue eyes burning with an intense, newfound confidence. He scooped the baby up, holding him tightly against his chest.
"Let's be heroes, Pax," Louis whispered, a proud, rebellious smile spreading across his face. "Let's show them what we can do."