The stairwell should have been neutral.

  Concrete, metal, fluorescent light. A place people used and forgot. A place that existed only to get you somewhere else.

  Zero had chosen it because of that.

  He did not like lifts. Lifts trapped you inside someone else’s timing. He preferred stairs because stairs belonged to physics, not scheduling.

  Today, the stairwell belonged to something else.

  It started low. Not a pain. A sensation.

  Pressure, but not the kind that came from heat or humidity. Not the weight of air in a building that held too many bodies.

  This was more specific.

  It pressed at the edges of him. Like a hand testing a sealed container for weak points.

  Zero paused on the fifth step, hand resting lightly on the railing.

  The metal felt warm.

  Not warm because it had been in the sun. The stairwell had no sun. The warmth was uneven, as if the railing had absorbed heat in patches and held it there, refusing to distribute it properly.

  Or as if his own temperature had changed and the railing had not.

  He lifted his hand. Put it back down.

  Same warmth. Same wrongness.

  He climbed.

  Step after step, the pressure increased. Not fast. Not dramatic. Gradual, like water rising around his ankles while he was not looking.

  Zero stopped again and listened.

  Nothing.

  People moved above him. Footfalls. Voices. A door opening somewhere on a higher landing and closing again. Ordinary building sounds.

  Yet each sound arrived with too much separation. Too clean, like the world had decided to deliver them one at a time instead of as a blur.

  Footstep. Pause.

  Door hinge. Pause.

  A cough. Pause.

  He looked up the stairwell, toward the next landing.

  Two office workers came down, talking about lunch plans.

  One wore a blue shirt. The other wore a white shirt. Both carried bags. Both moved quickly, eyes already past him.

  They brushed his shoulder as they passed, muttering apologies without meeting his gaze.

  Normal.

  Except the moment they passed, another office worker came down.

  Blue shirt. Same cut. Same shade. Same bag. Same gait.

  Zero’s eyes narrowed.

  He counted silently.

  One. Two. Three.

  Another office worker came down.

  Blue shirt. Same bag. Same gait.

  Zero shifted his weight.

  No. That could happen. Some office had a dress code. Some company handed out the same bags at the same conference.

  He climbed again, faster, trying to break the rhythm.

  The pressure followed.

  Not behind him. Not above him. Around him. The sensation did not feel directional. It felt like a field finding the outline of a thing and tightening its grip.

  On the next landing, the building’s exit door opened onto street level. He pushed through it and stepped into Singapore.

  Noise. Heat. Movement.

  The city should have swallowed the stairwell’s quiet like it had never existed.

  Instead, the city separated.

  Every sound arrived cleanly, individually, like a badly edited film where the audio track had been chopped into segments and laid down with gaps between each piece.

  The tale has been stolen; if detected on Amazon, report the violation.

  A car horn, sharp and isolated.

  Silence.

  Footsteps on pavement.

  Silence.

  A child laughing.

  Silence.

  Zero stood on the sidewalk and felt his heartbeat pick up. Not from fear at first. From the body’s frustration at an environment that refused to blur properly.

  He walked.

  He chose a side street, then another, routes that felt less exposed. He avoided main roads and bright entrances. He moved like he was late for something, because people who looked purposeful were less interesting than people who looked uncertain.

  The pressure adapted.

  When he stopped at a corner, it tightened.

  When he moved, it loosened.

  Not enough to disappear. Enough to suggest the sensation was learning him.

  Testing boundaries.

  The thought arrived unbidden, and he regretted it immediately, because if something was testing then something was measuring.

  And if something was measuring, there would eventually be results.

  And results implied decisions.

  Zero ducked into a convenience store to get out of the open street.

  The bell over the door chimed.

  Too cleanly. A perfect note with no rattle, no dullness, no slight delay. The kind of chime a new bell made, before humidity and time got to it.

  Fluorescent lights hummed above him.

  Not the normal uneven hum of a shop that never quite replaced all its tubes at once.

  This hum was synchronized.

  All tuned to the same frequency.

  Zero knew it was 120 Hz.

  He should not have known that.

  He did not know how he knew it.

  He moved down the first aisle anyway, because movement made the pressure loosen, and he did not want to stand still long enough to find out what happened when it tightened all the way.

  The store smelled of plastic packaging, chilled air, and sugar.

  A tray of curry puffs sat near the counter under a warming lamp. The pastry smell should have been comforting. Grease, pepper, familiar cheap heat.

  Instead it registered as an input. A data point.

  Oil temperature slightly too low.

  Holding time 18 minutes past optimum.

  Degradation curve visible.

  Zero stopped walking.

  He did not decide to stop. His feet stopped on their own, as if the store had given him a cue and his body had obeyed it.

  He leaned against a shelf of bottled drinks and closed his eyes for one second.

  The pressure surged.

  His knees buckled.

  He caught himself, fingers gripping the shelf hard enough to rattle plastic bottles. Water, green tea, isotonic drinks. The labels flickered in his peripheral vision, too sharp, too legible.

  The cashier looked up from his phone with the bored expression of a man who had seen everything and cared about none of it.

  “You okay?” the cashier asked.

  Zero nodded too quickly. “Just dizzy.”

  “Want water?”

  “No. I’m fine.”

  The cashier shrugged and returned to his phone. Interest lost instantly, like a switch.

  Zero straightened.

  The pressure did not ease.

  It reorganised.

  He felt it shift from outside pressure to internal alignment, as if the sensation had stopped pressing on his skin and started adjusting his thoughts.

  His breathing began to sync with the hum of the lights. He did not choose to do it. His lungs simply matched the rhythm, in and out, in and out, timed to an invisible metronome.

  The ache behind his eyes sharpened into something precise, almost geometric.

  And then he knew things.

  Not remembered. Not inferred. Not guessed.

  Known.

  Seventeen customers in the store.

  Four paying cash. Three credit. Ten contactless.

  The refrigeration unit would fail in forty-three hours due to compressor bearing degradation.

  The cashier’s shift ended at 2:47 PM. He would be three minutes late clocking out.

  The security camera above the register had a dead pixel in the upper left quadrant at coordinates 47, 83.

  The knowledge poured in without context, without request, without consent.

  Zero’s mouth opened. No sound came out at first.

  He gripped the shelf again, not because he was falling, but because his hands needed something physical to hold onto while his mind filled with information he had never earned.

  Shelf 3, row 2: 73 items.

  Optimal stock level: 80.

  Restock scheduled: 16 hours.

  Customer 7: male, 34, purchasing pattern consistent with Wednesday routine.

  Deviation probability: 12%.

  Temperature differential between entrance and rear: 2.3 degrees Celsius.

  Optimal: 1.8.

  Efficiency loss: 4%.

  Stop.

  The word formed inside him as if it were his thought, but it had nowhere to go. The information did not stop because he asked.

  A number flashed through his awareness.

  Not seen. Not heard.

  Felt.

  Baseline… accepted.

  Those words were not his voice. They landed like a stamp on a form.

  Processed.

  Zero’s vision doubled.

  The store overlaid itself with another version.

  Cleaner.

  Shelves perfectly stocked, items arranged not by brand but by purchase frequency and profit margin.

  Lights calibrated to exact colour temperature for maximum product visibility.

  Customers moving in paths that minimised congestion and maximised exposure to high-margin items.

  The overlay showed the cashier standing differently. More efficiently. Less wasted movement. It showed his hand reaching for change before the customer had it ready.

  It showed the dead pixel in the security camera repaired.

  It showed Zero.

  Standing in a different place.

  Two steps to the right. Rotated forty degrees. Hands at his sides, not gripping the shelf. Posture adjusted to avoid blocking the flow of customers.

  His body tried to move into that position.

  It was not subtle.

  His feet shifted. His shoulders turned. His hands loosened on the shelf as if the shelf had become unnecessary.

  Zero fought it.

  The pressure spiked.

  Not pain, but force.

  A shove inside his skull.

  His vision snapped back to the real store.

  And the real store looked wrong by comparison.

  Messy. Inefficient. Human.

  The cashier slouched. The customers wandered. The bottles on the shelf were misaligned by millimetres. The curry puffs sat too long under a lamp that held them at the wrong temperature.

  Zero wanted to fix it.

  The urge was physical, like an itch that demanded his hands.

  He reached toward the bottles without meaning to.

  His fingers touched the first bottle and slid it into alignment.

  Perfectly straight.

  Then another.

  Then another.

  The satisfaction was immediate, sickening in its intensity. A tiny relief in his chest, like he had corrected a mistake that had been bothering him for years.

  No.

  Zero jerked his hands back, staring at them like they belonged to someone else.

  The pressure peaked.

  Then vanished.

  The sudden absence made him stumble. He hit the shelf again, harder this time.

  Bottles toppled.

  Plastic clattered.

  A cascade rolled across the floor. Green tea, water, sports drinks bouncing and spinning in overlapping arcs.

  One bottle cracked. Liquid spread in a widening puddle.

  The cashier finally stood up, irritation flickering through his boredom.

  “Oi,” he started, voice rising.

  Zero did not wait.

  He pushed through the door and staggered into the street.

  He knew the refrigeration unit would fail in forty-three hours.

  He knew the cashier would be three minutes late clocking out.

  He knew the exact coordinates of a dead pixel he had never seen.

  A tiny relief.

  Like fixing a mistake that had been bothering him for years.

  Then he knocked them all down on purpose, and the pressure vanished.

  For now.

  Stay messy.

  Stay wasteful.

  Stay wrong - for as long as you can stand the cost.