The Mobile Library Bus Breathed in the Empty Garage

The bookmobile bus breathed in the empty garage.

Park Gitae did not go to turn off the engine.

He counted the keys first.

At 7:50, the engine RPM on the vehicle control screen held steady at 780. Driver's seat weight was 0, the door was closed, the bus was stationary. No one appeared on the exterior garage cameras either. The ignition key hung on its metal ring inside the security office's sealed case.

Gitae set the key bundle on the table and tapped it twice.

"A vehicle isn't something that moves with just one key."

Mijin asked. "Is there a spare?"

"Even the word spare is old news here. Every time this place closed for the night, one more key got added."

The place Gitae meant was the bus garage. He added the location at once. "North wall of the garage, the gray steel box. Behind the patrol log."

The garage guard turned the camera. There were two key boxes on the north wall. The electronic sealed case currently in use, and an old gray steel box with peeling paint. The old box's door was bound shut with rusted wire.

Gitae did not tell him to open it.

"Photograph the wire knot first. Twice from above, once from the side. Don't just tell me it matches the knot I know."

The garage guard photographed the knot from three angles with a handheld camera. Dowon received the footage from the library site but did not authorize garage access on his own. Yuna saved the photo hashes and the timestamps. Dust had gathered on the wire, and no cut edge was visible.

The fact that it had never been sealed and the fact that it had just been opened were two different things.

Before entering his own memory into the ledger, Gitae looked for the night patrol log. The bus garage patrol log had only the front side of each date scanned in. Vehicle number, departure time, return time, key recipient. The last column had read `security office` for an entire month.

"There's no person's name here," Yuna said.

"It was removed."

"By who?"

Instead of answering, Gitae asked to see the back of the paper patrol log. The garage guard pulled today's original from the file. Faint indentations ran diagonally across the lower half of the back page, impressions left by pen pressure on a sheet above that had bled through onto the one beneath.

Yuna reached to raise the screen's contrast, then stopped. If only one processed image of the original was kept, it would be hard to tell which strokes were real impressions. The garage guard shone raking light from the right, then the left. Gitae did not say what he read first.

Under the right light, `18:20` appeared.

Under the left light, only the final consonants of two name characters appeared.

Both angles together pointed to only the time. The name could not be read.

Gitae said quietly. "Flip through the patrol log backward. And go through the dates in reverse order too."

The garage guard moved today's sheet to the bottom and went back through yesterday, the day before, and so on. Beneath the front-side `security office`, different impressions continued from page to page. Some days showed three characters, some two. On Friday's sheet, a key ring number had been written instead of a vehicle number.

`M-17 / received 18:20 / returned 21:05.`

The ignition key ring currently inside the sealed case was also M-17.

Gitae did not conclude that the number belonged to an emergency ignition key. The same series of rings was used on the bus doors, the maintenance box, and the garage shutter. The garage guard turned the key to show it through the glass of the sealed case. The grooves on the metal blade looked like they matched a vehicle ignition key, but there was no way to actually insert it and check. There was no reason for a person to approach a running bus to confirm it either.

Mijin opened the garage dispatch list. One vehicle maintenance technician and a fire standby team were auto assigned.

Gitae pressed his fingernail against the blank column of the patrol log.

"If we send a person first, that column just goes back to being 'security office.'"

"What if the engine overheats?"

"We watch the temperature. The exhaust and fuel too. Keep the people outside the fence."

Dowon drew the line that the garage wasn't a field team matter for him. There was already one guard at the bus garage, and adding more personnel only made it harder to track who was currently present. Mijin canceled the automatic maintenance technician assignment and kept the fire standby team on the road south of the garage. She made the entry conditions public: fuel leak, coolant overheating, or vehicle movement, any one of the three.

The garage guard watched the engine bay through the thermal camera outside the fence. The temperature rose from 41 to 43 degrees with no sudden spike. There were no new liquid traces on the ground. Only a thin paper strip in front of the exhaust pipe fluttered steadily.

The bus did not flee.

Nor was it a vehicle fit to run.

Tomorrow morning the bookmobile was scheduled to stop at two apartment complexes and in front of the rehabilitation hospital. Forty three users had reservations, twelve of them children's seats. Because the engine was turning over normally, the control system tried to change the operation status to `ready`.

Gitae read the message from the city hall official asking to reopen the main library doors.

`Vehicle service continuity needed. Reviewing temporary reopening of main return counter.`

Opening the main library could reduce citizen complaints even if the bus stopped running. But the staff stairwell door was still at 8 degrees, and the archive room printer and shelving remained unconfirmed. It would mean routing the children's path that Eunchae had blocked back into the main library under a different name.

Gitae tried to bring up the old building the way he usually did. His lips moved, but no sentence came out. He unclenched the fingers that had tapped the key twice.

"The main library stays closed."

For the first time, he said it without any route metaphor.

"The bookmobile is also suspended. I'll file it under my own name that no bus goes to the two complexes and the hospital tomorrow."

Mijin confirmed. "Are you saying a security guard will take responsibility for the operation decision?"

"No. I'm saying I won't hide the patrol and key records I know about. The team decides the suspension based on the current risk, and I hand over the past record that decision needs."

Gitae did not pretend to shut down operations like a hero acting outside his authority. Instead he recorded the name of the garage's night observer and the length of time he himself had known about the back of the patrol log and turned over only the front.

`Park Gitae / failed to report back-side receipt traces on the night patrol log.`

Mijin did not delete the sentence. She attached it beneath the public operation suspension decision.

The public notice did not stop at three sentences. The two apartment complexes were told the bus would not run, that book checkout and return were suspended, and that resumption time was undetermined. The rehabilitation hospital was asked to wait for the mobile vehicle, not to come out to the entrance, and to remain inside the ward. A condition was also attached that reserved books would not be automatically transferred to the next facility.

The complex manager protested. He said the books for the vacation reading program were on the bus, and the children would be waiting since morning.

Gitae did not ask Mijin to explain in his place.

"I can't give you the books. The bus isn't coming either. I'll write down that I don't know, all the way down to the part I don't know why."

"What does a security guard get to decide?"

"The decision maker is the rescue center. I'm the person who hid the night patrol record. I'll send the inquiry number along with the accountability record."

His voice stayed polite, but the word that place never left it. He did not push the citizens' inconvenience onto anything uncanny, and he did not add that some past missing person would have wanted this.

The manager asked if he needed to enter a name to cancel the children's seats. Yuna checked the reservation screen. Unlike the bundled library visit reservations, the bookmobile reservations showed the book barcode and the seat number in the same row.

`Seat 01 / Book 978-89-`

`Seat 02 / Book 978-89-`

Of the twelve rows, the barcode's final digits on seven rows matched the thirteen digit number that had appeared on the staff account screen. The leading digits were obscured, so there was no way to know if the full numbers matched.

Yuna did not click the reservation. "Only the trailing digits match. That doesn't get us to the same book, or the same person."

Eunchae zoomed in on the screen from the outreach van. The child's name would not open. Next to the seat number, the book category column read not children's books but `work materials`.

"The bookmobile doesn't have that category," Eunchae said. "Even the staff training boxes get filed as general books."

Gitae thought of the bus's old maintenance box, but he did not explain it from memory alone. He did not ask the garage guard to open the first storage compartment behind the driver's seat either. He had him read only the seat labels visible within the window range of the exterior camera.

The bus had twenty seats. Starting from the window side: 1, 2, 3.

But the seven barcodes on the control screen were attached to seats 14 through 20. The person's seat number and the book number had merged into a single row. Whether an actual book or person occupied those seats could not be seen from the exterior footage.

Gitae flipped the patrol log backward again. Seats 14 through 20 used to be where the toolbox was placed during past night inspections. The last date he had checked that section was the same as the date of the accident seven years ago.

Once again, he did not say the name of the missing person.

"I'll find the key receipt time for that day."

There were impressions on the back of the sheet following Friday's page.

`18:20 received.`

The front read `security office`. But when the paper was tilted under the left light, three characters emerged in the recipient column.

The first character was Park.

The last character was Tae.

For a while, Gitae could not tap the key.

"I received it."

He did not say his memory had come back. He had them verify that the two directional raking light images matched his own signature card from that time. Yuna brought a signature from an old payroll document, and Jeongho found the duty assignment sheet for the same day from the union's archived copy. The turn at the end of the strokes and the shift times matched. Without any handwriting analysis, the three current records all supported that Gitae had received M-17.

"Who returned it?" Mijin asked.

Gitae looked at the 21:05 on the patrol log.

"I don't know. It says I returned it, but I have no memory of that time."

He did not add that he had done his best, or that someone had told him to. He left the responsibility he knew and the time he didn't know on the same line.

At that moment, the bus engine RPM dropped from 780 to 0.

The garage guard did not step inside the fence. The dashboard light on the exterior camera went out, and the trembling of the puddle on the ground stopped. M-17 remained inside the sealed case, unchanged.

No causal link could be confirmed between the engine stopping and Gitae's record coming to light.

Instead, the sign in front of the bus lit up.

The first line was supposed to show tomorrow's cancellation notice.

Red characters filled in one by one.

`Workers not returned: 7.`