Chapter 27

The Murder That Wasn't Meant to Kill

The Killer Changes Every 24 Hours · Oct 18, 2026

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The Killing That Wasn't Meant to Kill

At 00:12, Oh Sejin looked at the gray raincoat on the screen and shook his head.

The denial wasn't late. It was too fast. Before anyone confirmed who the person was, he'd already said the hands weren't his. Gang Taejun didn't miss that order.

"You said it wasn't your hands before anyone asked whose they were."

Oh Sejin's right hand folded on his knee.

"I can see it isn't my hand."

"I can see your habit."

Go Yura said.

On screen, the raincoat's hands flipped the cartridge and turned the mark inward. The same direction Oh Sejin had used in the infirmary. We'd learned back in chapter 23 that the same habit doesn't prove the same person. But it raised the possibility that someone had learned the habit and copied it.

Oh Sejin didn't look at the screen.

"That's not a habit."

"Then what is it."

Gang Taejun asked.

Oh Sejin shut his mouth. A man who used clinical language to reduce risk had run out of words to say. As the silence stretched, Yun Haewon spoke first.

Gang Taejun stopped questioning at that point.

"Mr. Oh Sejin, from now on this is a voluntary statement. You may decline to answer, and anything you say may be used against you."

Oh Sejin looked at him, too late.

"Suddenly principled."

"If principle comes late, the record dies."

Gang Taejun turned a paper around. There was a checkbox to confirm the statement notice. Oh Sejin didn't pick up the pen. The condition that his hands had to stay inside the camera frame hadn't been lifted yet. Go Yura slid the checkbox down below the screen.

"You can sign it later. Just tell us out loud whether you consent."

Oh Sejin tried to smile and failed.

"I consent."

That one word didn't open a defense. It just made sure that later, no one could say we'd pressed the words out of him. Evidence built from words torn out of a person doesn't hold up long.

"Is this procedure."

Oh Sejin finally lifted his head.

"It's a way to hide the safety indicator."

That statement was risky. We weren't supposed to open up the specific function. Gang Taejun raised a hand.

"Stop describing the function. State only the direction of the mark and the purpose of the act."

Oh Sejin didn't steady his breath first. He just spoke.

"If it's left visible, the patient refuses. If it's turned inward, confirmation is delayed."

"Was the purpose murder."

"It was restraint."

One word dropped into the room. Restraint. He wanted to say he hadn't meant to kill. That word looked like absolution. But if it wasn't absolution, what was it. Gang Taejun closed that gap immediately.

"You're the one who chose the word restraint."

Gang Taejun said.

"Yes."

"Whose word was it."

"No one's. I said it myself."

"Then you're responsible for the scope of that word."

Oh Sejin didn't answer. Gang Taejun waited. The waiting wasn't kind. It worked because it wasn't kind.

"Restraint is a word used for someone who's alive."

Oh Sejin said.

"And for someone who's dead."

Yun Haewon asked.

"A restraint that failed."

"That's not a failed restraint. That's attempted murder."

Yun Haewon's voice didn't rise. It sounded more precise for that. Oh Sejin didn't correct him. He couldn't.

"Are you separating the responsibility for the outcome from the intent."

"Yes."

"Does separating them erase the outcome."

"No."

Oh Sejin's answer was small. Small, but for the first time it didn't slip away.

At 00:30, we didn't let Oh Sejin into the infirmary.

He gave his statement sitting in the chair outside the door. Gang Taejun didn't offer him water. Give him water and his hands move. If his hands move, Go Yura has to check the direction again. Right now, all we needed was his mouth.

"Who were you trying to restrain."

"Deputy Director Yun Haewon."

Yun Haewon didn't close his eyes.

"Why."

He asked directly.

Oh Sejin couldn't look at Yun Haewon. Or rather, he didn't.

"If you go public, the 2019 record reopens."

"So you tried to kill me."

"I said restraint."

"I died from it."

Oh Sejin didn't shrink further. Sometimes when a person is cornered, they sit up straighter. That's how he sat.

"I wasn't trying to kill you. But if I said I didn't know it could kill you, that would be a lie."

Because of that sentence, it wasn't the air in the room that changed but the line in the record. No intent isn't absolution. He knew the outcome and still rated it low. That line was longer, and more uncomfortable.

Go Yura typed quickly.

`Intent: claims restraint. Awareness of risk of outcome: admitted.`

Oh Sejin looked at that line and nodded for the first time.

"Write it that way."

Gang Taejun added another line right next to it.

`Not justification.`

Oh Sejin's face hardened.

"You're writing that too."

"We write it whether or not you tell us to."

"I'm not trying to make excuses."

"Whether it's an excuse or not is a later problem. Right now we're stopping the sentence from going any further than it should."

I knew that line was necessary. Heard wrong, Oh Sejin's confession could look moving. He wanted to say he never meant to kill, that he'd wanted someone to stop him, that he'd made a call for help. Sentences like that sway people easily. But Yun Haewon had actually died, and without the loop he wouldn't have come back. Being moved forgives a person faster than evidence does. We had to slow that speed down.

Gang Taejun asked.

"Did you want to be caught."

Oh Sejin's eyes shook. His eyes shook before his hands did. I didn't translate that shaking into emotion. I only recorded the fact that the question had struck its target.

"I wanted someone to stop me."

"Who."

"You, Team Lead Gang."

Gang Taejun didn't react. Not reacting was his way. Instead he changed the question.

"Is that why you showed me your hands in front of me in chapter 18."

"Yes."

"Was that a confession."

"No. It was a failed call for help."

Yun Haewon said quietly.

"A call for help doesn't involve switching someone else's medication."

This time Oh Sejin didn't defend himself.

"That's right."

That one word wasn't forgiveness. But the direction of his statement had shifted. He stopped pushing all his actions onto Hong Sanguk's pressure alone. Not the whole truth yet, but he'd put his own hand on the line.

"If it was a call for help, why didn't you say it out loud."

I asked.

Oh Sejin didn't look at me.

"Saying it out loud leaves a record."

"Doing it with your hands left one too."

"At the time I didn't think my hands would be a record."

That statement was strangely honest. Oh Sejin was a man who handled records, but he hadn't believed his own body would become one. Medical records can be altered, access logs can be pushed back, statements can have their words changed. But the repeated direction of a hand stays behind more slowly, more stubbornly.

Go Yura pulled that sentence out separately.

`Oh Sejin: did not consider his hands to be a record.`

"Why this."

Oh Sejin asked.

"To see what you believed you could hide up until now."

That answer sounded like an attack, but it was close to the truth.

At 01:05, Gang Taejun opened Oh Sejin's personal locker.

Consent was given. Oh Sejin entered the passcode himself. The security team's camera filmed only below the screen, not his fingers. The passcode couldn't be recorded. What we needed wasn't the number, it was the file inside.

Inside the locker were a copy of a medical record, one family photo, and an old USB drive. Gang Taejun didn't look at the photo. Privacy is only opened when it becomes evidence. He put only the USB into the envelope.

"File name."

Go Yura read it aloud.

`2019_time_adjust_O.zip.`

Oh Sejin didn't bite his lip. He already knew. He didn't even have the strength to pretend he didn't.

"Should I open it."

Gang Taejun asked.

"It has to be opened."

Oh Sejin answered.

The file had no video. Only tables and documents. The first table was a proposal to adjust the estimated time of death from 2019. The second document was a draft explanation for a delay in medical handling. A short memo was attached to the third file.

Go Yura didn't open the file right away. She made a copy first. The original USB stayed in the transparent evidence bag, and the hash value was read back by hand twice. Gang Taejun had the numbers checked twice. The numbers were long and seemed to mean nothing. But that meaninglessness was good. It shakes less than a person's words do.

"Why go this far."

Yun Haewon asked.

"The 2019 file has already been adjusted once."

Go Yura answered.

"This time we have to make sure the process of viewing it can't be adjusted too."

Oh Sejin heard that and closed his eyes. Adjustment. It was the word he knew best. Time adjustment, wording adjustment, responsibility adjustment. Adjustment always looks like correction, but sometimes it's a way of erasing.

`If the deputy director's statement is disclosed in the current audit, submit the original 2019 adjustment proposal.`

There was no sender. No recipient either. But the file properties still showed a last modifier. `HSW_admin_archive.`

Hong Sanguk's name wasn't there. But the direction it pointed still was.

The first table had four columns. `Official record`, `Original estimate`, `Reason for adjustment`, `Reflected or not.` Go Yura didn't read the medical judgment. Even if she had, it was a domain we couldn't judge. Instead, she pulled out only the time and the wording. The time of death in the official record was 13 minutes later than the original estimate. In the reason for adjustment column, it read `reflects delay in reporting chain`. That phrasing was strange. Reflecting a delay doesn't explain the lateness, it blurs the responsibility for it.

The second document was quieter. `Scene confusion`, `Duplicate emergency response`, `Possible reporting omission.` The word possible appeared three times. Possible is a word that gets used a lot in court. It shifts suspicion without confirming anything.

Gang Taejun drew a line under that column.

"Who wrote this."

"The draft came from the director's office."

Oh Sejin said.

"Who reviewed it."

He answered late.

"I did."

This time no one was surprised. Not being surprised doesn't make the guilt smaller.

Oh Sejin said.

"They pressed me with that file."

"Who did."

"The director's office."

Gang Taejun corrected him immediately.

"A person."

Oh Sejin couldn't answer. The director's office was a phrase that erased people. He hadn't left that room yet.

Gang Taejun lowered his question.

"Voice, writing style, method of delivery. Can you narrow any one of the three down to a person."

Oh Sejin didn't look up at the ceiling. People sometimes look up when they're searching their memory. He looked down. His face was choosing whether or not to say something he already knew.

"The writing style was similar to Director Hong's directives."

Even in a room without Hong Sanguk in it, his name pressed down on the space.

"Similar isn't evidence."

I said.

"I know."

Oh Sejin answered.

"That's why I hadn't said it until now."

That answer was a defense too. But a fragment of fact was mixed into it. Without a direct order, Hong Sanguk is left out. If he claims there was a direct order, Oh Sejin becomes a man who added a lie on top. He held out longer in that space between the two.

Yun Haewon looked at the first line of the document.

"The time of death is different."

That sentence had no emotion in it. But his fingertips didn't touch his cup. Either he'd known that number, or he was afraid of it.

Go Yura enlarged the first line of the table. The 2019 time of death. A 13 minute difference from the official report. The treatment delay, record delay, and responsibility delay Oh Sejin had talked about finally took the shape of a document.

"Is this time of death confirmed."

Yun Haewon asked.

Gang Taejun didn't look at Go Yura. He answered directly.

"No. These are the before and after values written in the document. This isn't a confirmed medical time of death."

That line was necessary. Once a number appears, people immediately treat it as an answer. Thirteen minutes was especially dangerous. It's specific enough to look like the truth. But what we had right now was a document showing someone moved thirteen minutes. Why it was moved, and for whose benefit, was still blank.

Oh Sejin heard that line and still didn't relax.

"Even so, I reviewed it."

He said.

Gang Taejun nodded once.

"That part is confirmed."

"Who sent this file last."

I asked.

Go Yura opened the transmission log. The last send had failed. The failed recipient field had no name, only an internal position.

`Deputy director.`

That was Yun Haewon's position.

Oh Sejin said, looking at the screen.

"I wasn't trying to kill him."

This time no one refuted it right away. There was no need to. The 2019 time of death in the file had already pressed down on his sentence in his place. Saying he hadn't meant to kill doesn't erase the outcome. And someone had known that outcome.

He added, a moment later.

"The reason I keep saying it is because I know that sentence isn't enough."

Gang Taejun stopped his pen.

"Does repeating an insufficient sentence make it enough."

"No."

"Then the next sentence."

Oh Sejin stayed silent for a long time. This silence wasn't one that avoided the question. It was the silence of choosing what sentence he had to build with his own mouth.

"I didn't intend to kill him, but I rated the chance that he'd die as low enough to accept."

Yun Haewon set his cup down. The sound was quiet.

"To me, that's more than enough to be murder."

Oh Sejin didn't lower his head. Lowering his head might have looked like an apology. He avoided that easy posture.

"Understood."

Gang Taejun put the failed transmission log from the 2019 file into a separate envelope last. The failed recipient, the internal position, the modifier's account, the hash value. Four things laid on the same page. Someone had pressed down on Oh Sejin. Pressed down, Oh Sejin had pressed down on someone else. Pressure flows from the top down, but responsibility doesn't disappear along with that flow.

Outside the window it was still dark. The loop makes the dawn stretch long. A long dawn makes confessions look like truth. I stayed on guard against that. Oh Sejin's words weren't a key. They were only a handle that opened the next door.

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