Yun Haewon's Schedule

Yun Haewon's schedule did not have his own name opened first at 07:10.

He pressed the corner of the envelope with his index finger and squared it against the edge of the desk. There were twelve envelopes. They had names. But when Go Yura restored the printer queue, the original list on screen had no names at all. `D-01`, `D-02`, `D-03`. Only door numbers.

"Did you erase the names."

Gang Taejun asked.

Yun Haewon set the envelope down.

"I never put them in to begin with."

That did not sound like an excuse. It was worse than that, because it was a design.

Go Yura enlarged the recovery screen. The print schedule was broken down not by person but by door number, authentication tier, and delay in seconds. `First official authentication door after 18:00`, `Authority group for that door`, `Envelope set reordering`. The three lines read less like a document and more like a switch.

"The recipient isn't a person."

Go Yura said.

"It's a door."

Door. That word had always outlived people at the research institute. People died, remembered, lied. Doors left logs of opening and closing. Yun Haewon had used exactly that.

Gang Taejun wrote on the board: `18:00 / first authentication door / envelope reordering.`

"Purpose."

Yun Haewon lifted his head.

"I won't say I predicted everyone's choices."

He drew that line first. It was a good line. Still too late.

"But I designed which secret would break first depending on which door someone opened. The director's office door meant the director's office authority group. The infirmary door meant emergency records. The residence meant personal movements. That's how it worked."

"You turned people into doors."

That wasn't a question from me.

Yun Haewon did not deny it.

"I thought that was less dangerous."

"The less dangerous option got someone killed every single time."

He lowered his eyes for a moment. Not long. Yun Haewon was not someone who placed himself only as a victim. That made it more uncomfortable, not less.

"That judgment was wrong."

He said it plainly. No excuse attached.

At 07:35, we reopened the envelope records from the earlier loops.

Back then I had read the envelope names in order of person: who Yun Haewon had meant to pressure, who had ended up seeing their own secret first. But once Go Yura sorted them by door number, a different table emerged.

In the loop where Noeul had opened the morning food storage room, the first authentication had been the residence's west door, and the envelopes that came out first were the residence movement logs and the cafeteria's reflection footage. In the loop where Go Yura had run to the server room and opened the control building's side door, the logs and the remote commands had come out first instead.

"So the envelopes didn't choose the victim."

Go Yura stopped mid sentence.

Gang Taejun finished it for her.

"The first door chose who would be pressured first."

Not even quite a person, to be exact. The door chose the authority, the authority chose the secret, and the secret drove a person. Between those steps, people moved in their own way. That movement was what produced the deaths.

Yun Haewon put his hand on the right side of the table.

"If no one opens a door before 18:00, the default set prints."

"The default set."

"The envelope bundled under my own name."

That could have sounded like self sacrifice. But it was also a design, one made by someone who believed he could control things better if he took the first hit himself.

Go Yura pulled up the default set and the door specific sets side by side. The default set bundled Yun Haewon's position account, Hong Sanguk's office archive, and Oh Sejin's emergency records together. If the infirmary door was the first authentication, the emergency records surfaced first. If the residence door, Noeul's cup location and the cafeteria reflection footage surfaced. If the control building door, the R-3 code and the generator bug surfaced first.

"This is a priority table."

Go Yura said.

"Not a list of secrets. A table deciding which secret hits a person first."

Yun Haewon did not correct that description. People who should correct themselves don't, and people who dislike hearing something try to. I wrote down that difference.

Gang Taejun trimmed the table to three lines.

`D-04: emergency records priority`

`D-07: residence movement priority`

`D-02: remote command priority`

"If there's no person's name, does responsibility disappear too."

He asked.

Yun Haewon did not answer right away this time.

"No."

"Then write it with names again."

Yun Haewon picked up the pen. Next to D-04 he wrote Oh Sejin, Yun Haewon, temporary emergency access. Next to D-07 he wrote Noeul, Baek Somyeong, residence storage locker. Next to D-02 he wrote Go Yura, Yi Juwan, director's office authority group. Once the door numbers turned back into people, the table got messier. The messier version was closer to real.

Noeul saw the table and sent a single line by text.

`Doors get opened by hands too.`

It was a short sentence. We had written down the obvious thing far too late. We left that sentence at the top of the table.

"Why didn't you do it by name from the start."

I asked.

"Names change. Proxy authentication, lost keys, position accounts. At the institute, door authority is more honest than a person's name."

"That's not honest. That's just dull."

Yun Haewon looked at me.

"A door doesn't know who is opening it or why."

He couldn't answer that right away. It was the first time.

Gang Taejun nodded.

"When you stake a person's secret on a dull system, the person gets processed as a dull value too."

Mun Rahee had only been listening from the far end of the room. Every time she heard the word "system," her lips pressed shut just slightly. It wasn't the same reaction as with the Mun Hajin file. This time calculation came first.

"Can I see the full decision tree."

Mun Rahee asked.

Go Yura answered.

"Only the output rules. Which result each door produced still has to be checked against the actual authentications loop by loop."

"It has to be checked."

Mun Rahee's words didn't sound like agreement. They sounded like a demand for verification.

At 08:00, Gang Taejun did not gather everyone into the conference room.

Gathering everyone could block the first authentication. But blocking and understanding are different things. This time we needed to read the decision tree. Gang Taejun put only four official doors under surveillance: the residence's west door, the control building's side door, the infirmary's D-04, and the director's office D-01. The rest got alarms only.

"We don't steer this."

He said, looking at me.

"That means we don't make anyone open anything anywhere."

"I know."

"Knowing doesn't stop people from doing it anyway."

He pointed at my notebook. I had already written "no steering" first, in handwriting smaller than usual. Small handwriting is close to the instinct to hide something. I wrote the line again, bigger.

Yun Haewon opened his own envelope. Inside was a nameless table. Door numbers, figures, and delay seconds. He didn't hide the table. Instead he drew a line above it with his pen.

"This is as far as I know. What anyone actually chooses, I don't know."

"That statement doesn't reduce your responsibility."

Gang Taejun said.

"I know."

Yun Haewon's answer came too fast. A quick admission is sometimes a defense.

I asked him.

"Why didn't you leave this table for me."

"I was afraid Seo Ihyeon would end up choosing which door to open before 18:00."

"Did you think I'd treat people as experimental variables."

Yun Haewon answered late this time.

"Because I did exactly that."

That sentence didn't attack me. That's why it stayed with me longer.

At 08:40, Yun Haewon showed us the back page of his own schedule.

There were failure conditions on it. If the first authentication door differed from expectation, revert to the default set. If the same authority was authenticated twice, ignore the second instance. Deactivate the authority of anyone dead or removed from the premises. The three conditions looked reasonable. The problem was the last line.

`If harm occurs, correct in the next loop.`

I pointed at that line with my finger.

"The word correction is far too convenient."

Yun Haewon looked at the line.

"You're right."

"Did you know people would die at that point too."

"I knew it as a possibility."

"Did you rate that possibility low on purpose."

He fell silent, as if recalling Oh Sejin's words. The idea that it's fine for people to die, rated low on purpose. We had already heard that line once. When the same words come back to a different person, the shape of the guilt changes too.

"Record it that way."

Yun Haewon said.

Gang Taejun wrote.

`Yun Haewon: rated the possibility of harm low as a correctable failure.`

Yun Haewon looked at that sentence without changing his expression. Not changing expression doesn't mean it hurts less. He simply didn't turn that pain into an explanation that favored himself.

At 12:20, Noeul stopped in front of the residence's west door.

We didn't explain much to him, only by text. `First official door authentication after 18:00 may reorder the envelope sequence. Keep your usual route. Do not deliberately change it.` Noeul read the screen and nodded. Then he sent a reply.

`Normally I'd be at the west door at 18:05. I'll open it today if I need to. I won't if I don't. I won't do it on purpose either way.`

That sentence was more precise than ours. Not doing something on purpose. It was the hardest action inside a loop.

Baek Somyeong stood near the director's office with her camera. Gang Taejun didn't ban filming. Instead he logged the lens position. Baek Somyeong looked unhappy but complied. A camera that isn't logged becomes a secret later.

Yi Juwan still hadn't shown up. His name wasn't on the table. But wherever there's proxy authentication and position accounts, the legal auditor shows up eventually, even late. I marked that blank space separately.

Oh Sejin said she'd push the infirmary inspection to after 18:00. That sounded cooperative. But Gang Taejun asked right away.

"Do you usually push it back."

"No."

"Then don't push it back."

Oh Sejin raised her eyes.

"And if that makes me the first person authenticated."

"That's exactly what we're checking today."

She pressed her lips shut. Telling someone to act as usual in front of an experiment that could kill people is cruel. But that cruelty was exactly what Yun Haewon's design had created. Change your usual route and the routing produces another lie. Move as usual and someone might get hurt.

I wrote in my notebook.

`Keeping the usual route is also a choice.`

That sentence would come back to me later.

At 17:50, the institute was quieter than usual.

Quiet isn't quite accurate. The speaker check tone still sounded, and the typhoon rain still struck the glass walls. But fewer feet moved through the halls. Everyone was aware of the doors. The moment people become aware of a door, it stops being an ordinary object.

Gang Taejun asked me.

"Your guess."

"The residence's west door. If Noeul moves as usual."

"Another possibility."

"The infirmary's D-04. If Oh Sejin insists on the 18:00 medication check."

"Your hope."

I stopped my pen.

"Hope doesn't get recorded."

"That's exactly why I'm asking."

I didn't answer. My hope was for Yun Haewon to receive the default set, for him to take the pressure he'd built first. But that was still a way of putting people into boxes.

At 17:59:50, the logs of four doors appeared on a single screen.

Go Yura didn't start a countdown timer. A timer rushes people. Instead she put the central clock and the independent clock side by side. The 63 second gap still hadn't been explained, but today the gap itself was what mattered.

18:00:00.

No door opened.

18:00:08.

The sensor in front of the infirmary's D-04 lit up. No username appeared. Before the card touched the reader, only the handle moved first.

"Who."

Gang Taejun asked.

Go Yura zoomed in on the screen.

"It's a camera blind spot. Only a hand shows."

The hand wore a glove. A white glove, a common item in the infirmary. Too common to become evidence.

At 18:00:13, the card was scanned.

What appeared on screen was not Oh Sejin's name.

`D-04 / temporary emergency access / YHW_deputy`

Yun Haewon rose from his chair.

"I never issued that."

Whether that was true or not, we still couldn't tell. But the printer didn't wait. A mechanical sound came from the back of the conference room. One envelope printed out. Go Yura ran over and grabbed it.

There was no person's name on the front of the envelope.

`D-04 FIRST AUTH`

Below it, in small letters.

`expected set: changed`

Go Yura looked at me.

"It's not the default set."

Gang Taejun ran straight for the door. Yun Haewon tried to follow. I grabbed his arm.

"Deputy director."

He looked at me.

"This time someone else might get hit first."

Only after I said it did I realize it. Saying the victim would change wasn't a sentence to feel relieved about. It meant someone else could die instead.