1. The Sanitised Room

At six forty-seven on a Tuesday morning, the Republic of Shinhwa’s national anthem crackled through every apartment speaker in the Neo-Seoul Central High-Rise Complex. It was a tinny, triumphant march, composed in 2042 to replace the older, more sentimental melody, and it lasted precisely ninety seconds. Yuna Kim stood in the kitchenette, her back straight, her hands pressed flat against the countertop, and she counted each second under her breath. She had been doing this for eight years, two months, and eleven days—since the day they brought Hwan home from the State Maternity Pavilion.

The anthem ended. A female voice, artificially cheerful, announced the day’s weather: partly cloudy, pollen count moderate, air quality index yellow. Citizens were reminded to report any unusual odours, sounds, or behaviours to the Citizens’ Harmony Bureau hotline. Yuna had never called that number. She had never needed to. She was the one who maintained harmony.

She turned to the stove, where a single stainless steel pot simmered with a precisely measured mixture of rice porridge, finely shredded chicken breast, and a quarter-teaspoon of ground lotus seed powder. The recipe had been approved by the Central Child Nutrition Board in 2059, and Yuna had memorised every variant for every age group. Hwan was now eight years and three months old, which placed him in Category 4B—low weight, low vocalisation, high sensitivity to texture. She ladled exactly 180 millilitres into a white ceramic bowl, its surface unblemished by any pattern or colour. Patterns confused Hwan. Colours made him blink rapidly and press his palms against his temples. The world, Yuna had learned, was too loud for him. Her job was to turn down the volume.

She walked down the narrow hallway, her indoor slippers making no sound against the polished synthetic flooring. The apartment was a standard 2LDK model allocated to single-parent households with special-needs dependents—56.7 square metres of sterilised beige, with walls so thin that she could sometimes hear Mrs. Kang’s television from unit 1407. Yuna had filed three noise complaints in the past year. Each one had been acknowledged and then quietly archived. The Bureau did not like to relocate elderly tenants, especially those who had lived in the complex since the Reconstruction Era. Yuna understood. She was patient.

She paused outside Hwan’s door. It was a solid-core panel, painted the same shade of off-white as every other door in the building, but Yuna had added a strip of sound-dampening foam along the bottom edge. She had also replaced the standard latch with a magnetic lock that required a six-digit code—not to keep Hwan in, but to keep the outside out. She tapped the code: 0-3-1-9-8-4. Hwan’s birth date, inverted. The lock clicked open with a soft, satisfying hum.

The room was dark. Yuna had blocked the single window with a triple-layered blackout curtain, and she had removed the overhead light fixture three years ago, after Hwan had a seizure during a brownout. Now, only a small amber nightlight glowed from the corner, casting a dim circle over a thin mattress on the floor. There was no bed frame—too many edges. No toys—too many sounds. No books—too many expectations. Just a folded blanket, a single pillow with a hypoallergenic cover, and Hwan, curled into a fetal position, his thumb resting against his lower lip but not quite entering his mouth.

He was awake. His eyes were open, dark and wide, staring at the ceiling with an intensity that Yuna had learned to interpret as neutral. He did not blink when she entered. He did not turn his head. He simply lay there, breathing in shallow, even pulses, as if he were conserving every molecule of oxygen for a future that had not yet arrived.

“Good morning, my love,” Yuna said, her voice a soft monotone. She had trained herself to speak without inflection, without surprise, without any emotional peaks that might startle him. She sat cross-legged on the floor beside his mattress, placing the bowl between them. “Breakfast is at standard temperature. Rice porridge with protein supplement. No lumps.”

Hwan’s left index finger twitched. It was the only response she received, but it was enough. She reached out and gently touched his wrist—a signal she had established years ago, a pressure-coded message that meant I am here, I am not a threat, you may eat when you are ready. His pulse was steady, 68 beats per minute, within the normal range for his age and sedation baseline.

She did not sedate him every day. Only on days when the outside world intruded—when the school inspector came, when the housing officer requested a welfare check, when the mandatory developmental psychologist sent her questionnaires. Today was a school day, but there was no school. The instructor, a young man named Mr. Park, had been scheduled for a home visit at 10:00 AM. He was the third special-education teacher assigned to Hwan in eighteen months. The first two had been transferred to other districts after submitting reports that Yuna had carefully edited with a digital pen, removing references to Hwan’s “social withdrawal” and “non-compliance.” The state’s database accepted her amendments without question, because the state’s database was designed to accept any input that did not trigger a critical flag. Yuna had studied the flag system during her compulsory civic re-education course in 2057. She knew exactly which words to avoid.

She fed Hwan slowly, spoon by spoon, wiping a thin trickle of porridge from his chin with a sterilised cloth. He chewed mechanically, his gaze still fixed on the ceiling. After eight spoonfuls, he turned his head away—his signal for satiety. Yuna removed the bowl and placed it outside the door, where she would collect it later. She then spent twenty minutes performing the morning purification routine: wiping every surface in the room with a diluted antiseptic solution, changing his clothing (a plain grey jumpsuit, no buttons, no tags), and adjusting the room’s humidity to 52%, the exact level recommended for children with sensory dysregulation.

At 9:15, the intercom buzzed. The screen displayed a thin, bespectacled man in a beige state-issue jacket, holding a tablet and a small canvas bag. His name tag read: PARK, JUN-HO, CLASS 3 INSTRUCTOR, SPECIAL EDUCATION DIVISION. He smiled at the camera—a rehearsed smile, the kind that teachers were taught to wear during home visits. Yuna pressed the release button and said, “Fourth floor. Unit 1403. Please remove your shoes at the entrance and place them in the sanitisation tray.”

She watched him on the corridor monitor as he ascended. He walked with a slight limp, favouring his left leg. His jacket was neatly pressed, but his collar was slightly askew—a minor imperfection that Yuna filed away in her mental catalogue. She opened the apartment door before he could knock, standing in the threshold with her hands clasped behind her back.

“Mrs. Kim,” he said, bowing slightly. “Thank you for receiving me. I’ve reviewed Hwan’s files, and I’m eager to meet him in person. The central office believes that in-home assessments are more effective than centre-based evaluations, especially for children with his—shall we say—sensitivity profile.”

“You may call me Yuna,” she replied, stepping aside. “And you may observe Hwan from the doorway of his room. He does not tolerate proximity to strangers. He does not tolerate direct eye contact. He does not tolerate sudden movements or raised voices. These are not negotiable conditions. They are physiological facts.”

Mr. Park nodded, his pen already scratching notes onto his tablet. “Of course. I’ve worked with dozens of children on the spectrum. Every case is unique. I’m here to learn, not to impose.” He entered the apartment, his eyes scanning the living area—the bare walls, the single low table, the absence of any personal photographs or decorations. “You maintain a very… orderly home.”

“Order is kindness,” Yuna said. “Chaos is cruelty. Would you like tea?”

She did not wait for his answer. She moved to the kitchenette, where a small electric kettle was already boiling. She selected two ceramic cups—plain, white, unmarked—and placed a single tea bag into each. The tea was a blend of chamomile and valerian root, a mild sedative that she had procured through the state pharmacy under the pretext of her own insomnia. It was tasteless, odourless, and perfectly legal. She had used it on the previous two teachers as well, though they had never known. They had simply grown drowsy and left early, their memories of the visit hazy and indistinct.

She carried the cups to the low table, where Mr. Park had seated himself. He placed his tablet face-up, displaying a checklist of standardised behaviours: eye contact, response to name, imitation of gestures, verbalisation attempts. Yuna glanced at it and felt a familiar tightness in her chest. She had filled out dozens of these checklists, always with the same answers: no, no, no, sometimes, no. She knew that the system would eventually classify Hwan as “profoundly non-responsive” and recommend institutional placement. That could not happen. Institutional placement meant separation. Separation meant abandonment. And abandonment, to Yuna, was the only true crime.

She sat across from him, placing one cup within his reach and keeping the other for herself. “Hwan is in his room. You may stand at the threshold and observe for five minutes. After that, I will ask you to leave. He has a physiotherapy session at noon, and the disruption of his schedule causes him distress.”

Mr. Park sipped his tea. “I appreciate your concern. But the state’s new directive on neurodivergent education emphasises gradual exposure. Five minutes today, ten minutes next week, fifteen the week after. It’s a proven protocol. I’ve seen remarkable progress in children who were initially withdrawn.”

Yuna smiled—a thin, practised smile. “I am sure you have. But Hwan is not a case study. He is my son.”

She led him to the doorway. The door was ajar, just wide enough for a person to stand and look in. Hwan had not moved from his mattress. He was now lying on his side, facing the wall, his fingers tracing invisible patterns on the blanket. Mr. Park leaned forward slightly, his breath fogging the edge of the doorframe.

“Hwan-ah,” he said softly. “Hello. My name is Mr. Park. I’m a friend of your mother’s. I brought you a small gift—a set of textured blocks. Would you like to see them?”

He reached into his canvas bag and produced a small box. Inside were six wooden blocks, each painted a different shade of muted green. They were the kind of toys that the State Child Development Institute recommended for tactile stimulation. Yuna had seen them before, in the catalogues she was required to receive. She had never ordered them.

Hwan’s fingers stopped moving. He turned his head, slowly, and for a moment, his eyes met Mr. Park’s. It was a fleeting glance, barely a second, but Yuna felt her stomach drop. He had never looked at the other teachers. He had never shown the slightest curiosity. Why now? What was different about this man?

Mr. Park’s smile widened. “That’s it. You see them, don’t you? You’re curious. That’s a good sign. A very good sign.”

He took a step forward, crossing the threshold into the room. Yuna’s hand shot out, gripping his arm. “That is far enough.”

He turned to her, startled. “Mrs. Kim, I’m just—I’m not going to touch him. I’m only showing him the blocks.”

“You are in his space,” she said, her voice low but steady. “He does not permit anyone in his space. Not even me, unless I signal first. You will leave now. The visit is over.”

Mr. Park’s expression shifted—a flicker of professional frustration, quickly masked. He withdrew, placing the block box on the hallway console table. “Of course. I apologise. I should have asked for your permission before entering. Please accept my apologies.” He moved back to the living area, where his tea still sat, now lukewarm. He drank it in two quick gulps, his eyes scanning the apartment again—this time with a different quality, something between suspicion and pity.

Yuna escorted him to the door. He put on his shoes, bowed again, and stepped into the corridor. As the door slid shut, she heard him mutter under his breath: “Unusual case. Very unusual.” She watched on the monitor as he walked to the elevator, rubbing his temples. The tea was working. He would be drowsy within the hour, and by the time he reached his office, he would struggle to recall the details of the visit. His report would be vague, non-committal, and easily amended.

But she could not shake the image of Hwan turning his head. He had never done that before. Not for a stranger. Not for anyone but her. And the blocks—those simple, green wooden blocks—had elicited a response that she could not control. That was dangerous. That was an opening.

She returned to Hwan’s room and knelt beside him. He was back to staring at the ceiling, his face blank. She took his hand and pressed it gently against her cheek. “You are safe,” she whispered. “I will never let anyone take you. I will never let anyone change you. You are perfect. You are mine.”

He did not respond. But she noticed something: his other hand, resting on the blanket, was slightly curled, as if it were holding an invisible block. She stared at it for a long moment, her mind racing through possibilities, calculations, contingencies.

She reached for her phone and opened the Citizens’ Harmony Bureau app. She typed: “Request for background verification. Individual: PARK, JUN-HO, Class 3 Instructor, ID #442-07-819. Reason: routine home-visit assessment.” She pressed send. The reply came within three minutes: “Processing. Estimated completion: 48 hours.”

She put the phone away and looked at Hwan again. His hand had relaxed. His eyes were closed. He was breathing evenly, calmly, as if nothing had happened. But Yuna knew better. Something had shifted. Something had entered her carefully sealed world, and she could not unsee it. She could not un-feel it.

That night, after Hwan was asleep, she opened her diary—a physical notebook, bound in plain black leather, hidden beneath a loose floorboard in the storage closet. She wrote in neat, blocky script:

Day 2,957. The new teacher observed a micro-response. Hwan turned his head. He looked at a coloured object. I have no explanation. The teacher is a risk. He saw something that the others did not. He spoke gently, which is a method of seduction. He offered a gift, which is a method of invasion. I must decide. The Bureau will reply in two days. If his record is clean, I will request a transfer. If his record has any blemish, I will file a formal complaint. And if neither works—

She paused, her pen hovering over the page. She had never written the next thought before. She had never needed to. But now, staring at the blank space, she felt the shape of it forming in her mind, cold and inevitable.

She closed the diary and slid it back under the floorboard. She walked to the kitchen and retrieved a small glass vial from the back of the spice cabinet, behind the dried ginger and the cinnamon sticks. It was labelled “herbal extract for sleep.” She had procured it from a different pharmacy, using a different ID, for a different reason. She had never used it. She had only kept it, as one keeps a fire extinguisher—just in case.

She held it up to the dim light. The liquid inside was clear, colourless, odourless. It would dissolve into any beverage without trace. It would induce a deep, unresponsive sleep, from which a person would not wake without medical intervention—and if intervention came too late, it would simply look like a cardiac event. The state did not autopsy teachers who died of natural causes.

She put the vial back. Not yet. Not tonight. She still had 48 hours. But as she lay down on her own mattress—placed just outside Hwan’s door, so she could hear every breath—she felt a strange, calm resolution settle over her. The world was full of impurities. Her son was pure. And she would do whatever the state’s machinery would not: she would keep it that way.

Outside, the neon glow of the Neo-Seoul skyline flickered through the gap in the blackout curtain. The city hummed with its endless, orderly rhythm. Ten million souls, each in their assigned boxes, each following their prescribed paths. Yuna closed her eyes and imagined the silence of a room with no windows, no doors, no visitors. Only her and Hwan, forever.

She smiled in the dark.

The intercom would not buzz again until the next authorised visit. But she knew, with the certainty of a woman who had studied the system for decades, that there would always be another visitor. There would always be another threat. And she would always be ready.

Hwan turned in his sleep, and his hand brushed against her cheek. She captured it, held it, pressed it to her lips.

“Mama is here,” she whispered. “No one else. Just us.”

The clock on the wall ticked forward, mechanical and indifferent. Somewhere in the building, Mrs. Kang’s television murmured a late-night variety show. Somewhere in the city, Mr. Park was probably drifting off to a restless sleep, his memory already fogging over. And somewhere in the Citizens’ Harmony Bureau, a clerk was filing Yuna’s request into an algorithm that would spit out a result with no human oversight.

Yuna did not pray. She did not hope. She only waited, because waiting was the one thing she had mastered, the one skill that the world had taught her above all others. She waited for the next move, the next breach, the next opportunity to prove that her love was stronger than any law.

And in the quiet of the 56.7 square metres that she had carved into a sanctuary, she began to plan.