Episode 1. User Not Found

At 2:41 a.m., the city operations board still looked exactly as it should. Traffic flow stable. Power use normal. Drone logistics on schedule. Min-ji lifted her cold coffee with one hand, skimmed the night panel out of habit, and stopped when a new warning banner appeared in the upper right corner.

LIFE INDEX QUERY FAILED: USER 7A-114 / ERROR 404

She almost laughed. A 404 inside an internal municipal system was absurd. This was not a consumer website. Here, a 404 did not mean a broken link. It meant that somewhere in the data layer, the entire route proving a person existed had been severed.

She opened the detailed logs. The user name field was empty. Residential records, tax records, medical history, transit gates, all of them returned the same answer.

NOT FOUND

The stranger detail was this: the citizen identifier itself was still valid. Access logs showed normal activity only fifteen minutes earlier. Then the record simply stopped, as if someone had cut a clean strip out of paper with a blade. One person was missing, but the method felt too precise to be accidental. It felt intentional.

Min-ji opened a private terminal and launched an old debug tool she had kept after leaving the systems team. Official tools classified errors and turned them into pretty reports. What she wanted was not a report. She wanted the residue left a split second before deletion.

The script flickered for several seconds before spitting out a single line of cached residue that did not appear anywhere in the official logs.

route=/citizen/mirror/ghost

She stopped breathing for a moment. Mirror ghost. An internal rumor, spoken only as a joke. A shadow layer, people said, created by the city AI to temporarily duplicate reality whenever an error was too costly to reveal. It was never mentioned in documentation, and the people who claimed it existed had a habit of disappearing from the project soon afterward.

She pulled her chair closer to the desk. In the reflection of the monitor, her own face looked thinner and paler than it had an hour ago. Maybe it was nonsense. But a 404, even when it starts like a joke, always ends in something physical. A subway gate that will not open. A hospital that cannot register you. A front door that decides it has never known your name.

She traced the last valid access point. The result was offensively ordinary: a shared laundry lounge in the western residential district. One camera thumbnail loaded. Rain washed the edge of the frame. A woman sat half asleep in a plastic chair while the machine turned behind her. In the next frame, she was gone. Not blurred, not hidden behind motion. Gone. The paper cup beside her was still there. So was the wet umbrella. Only the person had been cut cleanly out of the world.

Min-ji set the coffee down untouched. Instead of opening the company messenger, she pulled up an encrypted channel she had created before she resigned from systems.

Jun, do you still believe in mirror ghost?

The moment she sent it, one of the green status lights on the operations board turned yellow. Worse than a system losing someone was the possibility that the system hated being caught doing it.