Sudo Naoki had noticed three things about the regular customer, and the third one was the one that kept him awake.

The first thing was the time. Every night at exactly 3:17 AM, the FamilyMart's automatic doors slid open and the old man walked in. Not 3:16. Not 3:18. Exactly 3:17. Naoki checked the register timestamp every night to be sure. 3:17.00. The digits blinked green in the darkness of the store, and the old man would appear in the space between one blink and the next.

The second thing was what the old man bought. Cigarettes. Black coffee in a paper cup. He stood at the counter and drank the coffee slowly, methodically, like a man performing a ritual he had performed many thousands of times and could not remember the last time he had chosen to perform it. He left at exactly 3:47 AM. Thirty minutes. Not thirty-one. Not twenty-nine.

The third thing was what the security cameras saw.

Naoki had only noticed because of boredom. It was 3:52 AM on a Thursday, the store was empty except for him and the old man (who had left minutes before), and Naoki was reviewing the previous night's footage on the monitor behind the counter because he had nothing better to do in a dying suburb of Saitama where even the night shift was dying.

He saw the old man walk in at 3:17. The camera showed an old man. Frail posture, stooped shoulders, the kind of face that belonged to someone of at least sixty. But the camera also showed something else that Naoki's eyes had not caught in the dim store light: the man's face was peeling.

Not like sunburn. Not like dry skin flaking in winter air. Like wet paper sliding off bone. His skin was coming off in sheets, curling away from his cheeks and forehead and jaw, revealing raw, red flesh underneath that pulsed faintly, as if something beneath the surface was trying to push its way out.

Naoki rewound the footage. Played it again. The face peeled as the man walked from the door to the counter. The skin hung from his chin like a mask that had been worn in the rain. Naoki pressed his palm against the monitor screen and for a moment he thought the image moved, that the peeling spread across the entire display, that his own face in the reflection was beginning to loosen at the edges.

He looked away. When he looked back, the footage had moved on to the next moment, and the old man's face was whole again. Smooth. Forty years old. Perfect.

The pills were in a small amber bottle behind the counter, next to the energy drinks and the chewing gum. The old man bought them every week. Twelve capsules per bottle. The label was in Japanese but Naoki had never been able to read the text clearly—the characters seemed to shift when he looked at them directly, like fish swimming out of the corner of his eye.

---

Daisuke was twenty and he had never met a risk he didn't like. He was a part-time worker at the FamilyMart three blocks down, and he and Naoki had become friendly over the shared language of the night shift—the exhausted glances, the shared thermoses of coffee, the unspoken understanding that the hours between midnight and five belonged to a different world than the one that existed in daylight.

"Have you seen the regular at our place?" Daisuke asked, leaning against the counter during the brief overlap of their shifts at 5:00 AM. "The old guy? He comes in at 3:17. I've been watching him. There's something wrong with him."

"What do you mean?" Naoki asked. He did not look up from the coffee he was pouring.

"I mean his face. Sometimes it looks—wrong. Like it doesn't fit anymore. Like a glove that's too big." Daisuke made a face like he was trying to remember a nightmare and couldn't quite catch it. "And the cameras. I checked the security footage once. I'm not joking, Naoki. His face—his face is falling apart on the camera. But not to him. To us, he looks fine. To the camera, he's—peeling."

Naoki poured the coffee. It was a dark roast, bitter and thin. "People see things differently on camera."

"Not like this." Daisuke held up a hand. "I'm telling you, something is wrong with him."

"What are you going to do?"

Daisuke smiled. It was the smile of someone who was about to do exactly the thing he should not do. "I'm going to find out what he's taking."

Naoki set the coffee down. "Don't."

But Daisuke didn't stop. Daisuke never stopped. He began watching the old man more closely. He noted the bottle on the counter next to the cigarettes. He read the label when the old man wasn't looking—the characters still shifted, but he managed to catch fragments: 若返り, something about cellular, something he couldn't read at all.

He followed the old man the next night, standing in the parking lot across from a small clinic that looked like it had been a doctor's office during the bubble era and had never quite recovered. Old signage. Faded posters in the window advertising services that no longer existed. A dog in the yard that did not bark when Daisuke walked past.

The old man went inside. He came out forty minutes later with a brown paper bag. Inside it, Daisuke was sure, was the bottle.

He waited three days. Then he went to the FamilyMart at 2:00 AM and asked the manager, a tired woman named Takahashi who had stopped caring about anything that wasn't in her job description, if they had any expired supplements in the back. She looked at him like he was crazy but pointed him to a box of dusty bottles behind shelf four.

He found one. A small amber bottle. Twelve capsules. The label characters shifted when he looked at them directly, but in the periphery he could read enough: 若返り薬. Youth medicine. Return-to-youth drug.

He took one at 3:00 AM on a Saturday, alone in his apartment, the television casting blue light across the bare walls. The capsule tasted like nothing. Absolutely nothing. Not bitter, not sweet, not metallic. Just nothing. Like swallowing a hole in the world.

He went to sleep.

---

The next morning, Naoki found Daisuke's own skin starting to peel at the edges.

He found him in the staff room, sitting on the floor with his back against the vending machine, staring at his hands. The skin on his knuckles was lifting, curling back slowly, like the pages of a book left in the rain.

"It started last night," Daisuke said. His voice was flat, the voice of someone who had looked at something terrifying and decided not to react to it because reacting would mean acknowledging that it was real. "I was washing my face in the bathroom and I felt it. Something moving under my skin. Like worms. But not worms. Like—like my face doesn't want to be my face anymore."

Naoki knelt beside him. He looked at Daisuke's hands. The skin was pale and raw where it had separated from the underlying tissue. It looked like wet paper. It looked like the security footage.

"Did you take it?" Naoki asked.

Daisuke nodded. "The pill. From the back of the store. I don't know what it is. I don't know what it does. But it's in me now, Naoki. It's in me and it doesn't want me anymore."

Naoki felt something move behind his own eyes. He pressed his palms against them until the pressure passed. When he looked back at Daisuke, the peeling had spread to his cheeks.

"There are seventeen," Naoki said. He didn't know where the words came from. They simply appeared in his mind, fully formed, like a memory he hadn't lived. "Seventeen other men across Japan who come to convenience stores at 3:17 AM. They are not human anymore. They are vessels."

Daisuke looked at him. His eyes were wide and clear and not afraid. "What do you mean?"

"A secret clinic. They experimented with consciousness transfer. They put the memories and consciousness of dead men into living bodies. Living bodies that reject them. The skin peels. The bones weaken. But the mind keeps going. Trapped in a dying vessel." Naoki stood up. He couldn't explain how he knew this. He could only say that the knowledge had arrived in his mind the way the peeling had arrived on Daisuke's face—silently, inevitably, from somewhere just beyond the edge of perception.

He called an ambulance. The number appeared in his phone without him dialing it. 3-1-7. The digits arranged themselves. The call connected.

---

The old man—Lao Zhou, the name tag on his coat read, though in Japanese it was rendered as Rou Shu—was brought to the same hospital. Naoki went with the ambulance because someone needed to be there, and the night shift was a solitary thing and Naoki had spent so many nights behind that counter that solitude had become a habit he could not break.

The paramedics laid the old man on a gurney and pushed him into the emergency room. Naoki followed. He told himself it was because Daisuke was in the same ward. It wasn't. Daisuke had been stabilized—his body was rejecting the compound, his immune system attacking his own facial tissue, but he would live. The doctor said so. The doctor also said the words sounded like they came from a script written by someone who did not fully understand the concept of living.

The old man was alone in the emergency room. No family. No emergency contact. Just a brown paper bag with a half-empty bottle of amber capsules and a train ticket to a station that no longer existed.

Naoki sat beside him. The old man's eyes were open. They looked forty years old. They had always looked forty years old. But Naoki was looking at him differently now, with the knowledge of what the cameras saw, and the forty-year-old face seemed like a mask, and masks can slip.

"Can you feel your face?" Naoki asked.

The old man blinked. "Sometimes."

"Does it hurt?"

"No. It doesn't hurt. It just—itches. Deep inside. Like something is trying to get out. Or in."

Naoki placed his hand on the old man's chest, over his heart, to check his pulse. His fingers pressed against the sternum and beneath it, something moved. Not a heartbeat. Something else. A second rhythm, independent, wrong, like a second heartbeat that wasn't his own. It moved beneath the sternum like a thing in a jar, turning, pressing against the inside of the ribcage, alive and foreign.

Naoki pulled his hand away. The old man was looking at him with an expression that might have been resignation or might have been relief.

"I know," the old man said. "It doesn't feel like mine."

"Who are you?" Naoki asked. "Really?"

The old man was silent for a long time. The hospital was quiet. Not the peaceful quiet of a library but the anxious quiet of a held breath.

"I am sixty-seven years old," he said finally. "I was a factory worker. I worked in a factory for forty years. They transferred me to a division I didn't know existed. I worked with materials I didn't know were dangerous. My body broke. My consciousness—my mind—kept going. And then they offered me a choice. Keep dying or come back. They said it was experimental. They said it was risky. They said—" He stopped. His forty-year-old face cracked slightly at the corner of the mouth, just for a moment, and Naoki saw the raw red flesh beneath, the skin beginning to peel at the edges despite the pills. "They said a lot of things."

"Who is 'they'?"

The old man didn't answer. He closed his eyes. When he opened them, the face was smooth again. Forty years old. Perfect. The mask had settled back into place.

---

Naoki wrote a letter in pencil on the back of a FamilyMart receipt. The writing was hurried, the pencil marks uneven, the handwriting of someone who was used to writing in places where he wasn't supposed to be writing. The words came fast, like they were escaping:

"I don't know if you're reading this. I don't know if the FamilyMart is still on this street or if the automatic doors still slide open at exactly 3:17 AM or if the security camera still shows what it shows. I don't know if you're still taking whatever it is you were taking or if you stopped or if you let yourself be what you are.

I'm writing to tell you that I saw you. Not your face—the cameras showed me your face, and it was not yours. I saw you. I saw the thing moving beneath your sternum. I saw a man trapped in a vessel that was rejecting him, and I saw him keep going anyway, because stopping was not an option he had been offered. I saw a person.

I don't know if that helps. Probably not. But I'm writing it anyway, because sometimes writing things down is the only way to make sure they happened. And what happened between us—that brief, strange, ordinary exchange at a counter in a convenience store in the middle of the night—happened. And it mattered.

I hope you find peace. However you define it. However you find it. I hope you stop fighting your body and start listening to it. I hope you let yourself be what you are.

I hope you know that someone saw you. And that was enough."

He rolled up the receipt and put it in an envelope. He went to the post box on the corner. He stamped it. The stamp fell off his finger and stuck to his skin. He tried to peel it off. It wouldn't come off. It stuck there like a mark, like a brand, like a small piece of someone else's face that had decided to stay.

He kept it there for three days. It wouldn't come off.

---

The old man was arrested by unmarked authorities in plain clothes that looked like they had been chosen by a committee. They didn't say what he was arrested for. They didn't show badges. They simply appeared at the clinic door and the clinic door opened for them, and the old man went with them without resistance, the way a man goes with the tide when he has been in the water too long and is tired of swimming.

Naoki heard about it from Daisuke, who was recovering—slowly, imperfectly, his facial tissue healing in patches like a landscape after a fire. Some areas were smooth. Others were scarred. The scars looked like the surface of the moon. Daisuke did not mind looking like the moon. He said it was honest.

"They took him to a facility," Daisuke said. "Not a hospital. Not a jail. Something in between. I don't know what they do there."

Naoki didn't ask. He didn't want to know.

Three nights after the arrest, Naoki was closing the store at 5:00 AM. The automatic doors slid shut behind the last customer. He was locking the cash register when he felt something in his pocket. He reached in and pulled out a small amber bottle. Twelve capsules. The label characters shifted when he looked at them directly, but he didn't need to read them. He knew what they said.

He didn't remember putting the bottle in his pocket.

He stood in the empty store, holding the bottle, and the fluorescent lights hummed above him and the security camera in the corner blinked its red eye, recording everything, recording nothing, capturing a man standing alone behind a counter in a convenience store in a dying suburb at 5:03 AM, and on the footage, his face was perfectly fine.

For now.

He looked at the digital clock on the wall. 3:16 AM. The next shift. The next night. The next time the automatic doors would slide open and the old man would walk in, or someone like him would walk in, at exactly 3:17 AM.

Naoki put the bottle in his pocket. He locked the door. He walked out into the dark.

Behind him, the FamilyMart's automatic doors waited. They would open again at 3:17 AM. They always did.

And somewhere, in a cell at a facility that did not appear on any map, the old man looked in the mirror and his face slid off like wet paper, and beneath it, something moved, and it was not a heart, and it was not anything human, and it was not finished yet.

The clock on the wall ticked toward 3:17.