When she pulled the plug, another person's pain drained away. The last wave flickered faintly where a left kidney used to be, then vanished. The sensation of an empty space. Seojin closed her eyes for 12 seconds and saw the afterglow off. Contracted pain always left a trace. Like phosphorescence blinking behind closed eyelids, just when she thought it was gone, it surfaced again.
She got up and headed to the sterilization room. The cold touch of the tile against her soles—she reminded herself it was hers. Her work began right there. The redrawing of the boundaries of sensation. Soundproofed white walls, scentless air, a constant 22 degrees. In that controlled environment, she returned from another's body to her own.
Lukewarm water poured down in the shower stall. Following the set procedure, Seojin wiped the conductive gel from her skin. The client's information was strictly anonymous, but pain exposed everything about a person. Today's commission had been phantom pain. A left leg lost in an accident three years ago, and the pain rising from where it used to be. Nothing was known about the client except that he was a 73-year-old man. His pain profile carried standard tags like 'tingling,' 'burning,' 'knife-sharp,' mixed in with sensory data the system couldn't classify. 'A pain like the sound of stepping on an old wooden staircase.' For three hours, Seojin heard creaking wood at his ankle, an ankle that no longer existed.
After the shower, she drank a sensory-standardization solution. A flavorless liquid made of minerals and nutrients. It reset the taste buds on her tongue and settled the stomach lining. Her body was a precision instrument for receiving other people's pain, and an instrument had to be zeroed out every single time.
Back in her private room, a notification was waiting on the wall screen. [New contract assigned. Confirmation required.]
Seojin sat down in front of the screen. The texture of the chair felt unfamiliar. Traces of the phantom pain still lingered in her nervous system. She pressed her palm hard against the seat. The resistance of synthetic leather. This was reality. Her sensation. Her body.
She opened the file. Contract ID, security clearance, estimated duration, payment due. A list of numbers. Estimated duration: 180 days. Payment: top of the industry. Contracts this long were rare. They usually came from terminal cancer patients—people entrusting the final stage of death to someone else, entirely.
She scrolled down. A 'sensory profile summary' appeared.
[Client diagnosis: Stage 4 pancreatic cancer, multiple metastases.]
[Primary pain type: visceral pain (deep, dull), neuropathic pain (peripheral).]
[Major accompanying sensations: nausea, vomiting, extreme fatigue, chemotherapy-induced taste alteration (metallic taste).]
Seojin blinked. The letters on the monitor blurred for a moment. Pancreatic cancer. It was the pain profile the inmates avoided most. If other cancers screamed in sharp, piercing cries, pancreatic cancer was closer to an endless, low-pitched howl. It wasn't the intensity of the pain that broke a person, but its relentlessness. A pain that ate into the nervous system and melted down the very architecture of the mind.
Just as she finished reading the file, the last item caught her eye. 'Special provisions.'
[Recipient restricted to Channel 7 operators with 5+ years of experience.]
The sensation of her heart dropping through the floor. Channel 7. The channel that transmitted raw, unfiltered signal exactly as it was. Most inmates used Channel 3 or 4, layered with multiple safeguards. Channel 7 had a sensory data loss rate under 0.1 percent — but the price was a burden on the receiver's nervous system that grew exponentially. It was, to put it plainly, like hearing the roar of an engine room with bare ears, no soundproofing between you and the noise. At this company, only three inmates had handled Channel 7 for more than five years. Seojin was one of them.
For a client to specify a particular channel and a particular operator's experience was a violation of protocol. It risked compromising the principle of anonymity. And yet this contract had passed through management's approval and landed with her regardless. Someone, clearly, had leaned on the system.
Seojin rose from her seat. Paced slowly around the room. Three steps to the wall, a hand against it, three steps back. A habit that surfaced when she was anxious. Her world had to be controlled down to the last margin of error. Variables meant danger, and this contract was riddled with variables from beginning to end.
She sat back down in front of the screen. Set her hands on the keyboard. Not the administrator interface — the backdoor she'd been quietly running for years, burrowing into the system's blind spots. A few commands in, and a window opened onto the encrypted original contract. She ran a script to cross-reference the client's anonymous code against the source identity data.
A progress bar crawled across the screen. 10%. 35%. 78%. Seojin held her breath. The bar hit 100%, and the encrypted name unspooled into a single line of text.
[Client: Kang-woo.]
Her fingertips went cold. The sensation of every drop of blood draining from her body. Time lost all shape. Nothing existed but the name on the screen. A name she had believed erased. A name she had not once let past her lips in ten years. The name that held her entire past inside it — the name that had driven her to choose this miserable line of work in the first place.
Mechanically, she opened his medical file. Data filled the screen. Diagnostic records from three months ago, CT images, blood test results. The numbers bore witness to how Kang-woo's body was falling apart. Tumor size. The organs metastasis had reached. Liver enzyme levels, white blood cell counts. Seojin swallowed against a dry throat.
One line held her gaze. 'Weight: 58 kg.'
In that instant, the floodgates of memory broke open. Ten years ago, a rainy summer day. Kang-woo's back as he stood cooking pasta in the cramped kitchen of a studio apartment. Damp hair, shoulders that had looked so solid then. He'd weighed 75 kilograms at the time. She used to climb onto that back and clown around, certain it was the safest place in the world.
The next entry read 'dyspnea and pleural effusion.' Memory crashed over her again. A dawn run along the Han River, the two of them side by side. When her breath gave out and rose to her throat, Kang-woo had caught her hand and pulled her forward. The feel of their breath tangling white in the cold air. The sound of him breathing, right there beside her.
The data kept coming. "Insomnia. Delirium." "Loss of appetite. Dysphagia." Every catastrophe unfolding in his body was recorded there in objective words and numbers. Seojin was looking at the screen, but past it she saw Kang-woo. She wasn't reading his pain. She was witnessing the erasure of his life.
This was a signal he had sent. Out of all the countless inmates, he had gone and requested someone with experience on Channel 7. It was a voice calling out to her. Kang-woo knew. He knew Seojin was here. And that she was doing this work.
A notification chimed and the comm window blinked open. It was Minhee, the management team lead.
"Seojin, you saw the contract file, right? A premium case like this — it's been a while."
Minhee's voice was bright and cheerful, as always. It was the same voice she used to say the cruelest things without a flicker of hesitation.
Seojin didn't answer. Her grip tightened on the keyboard. Her knuckles went white.
"Seojin? Are you listening? The client is someone very important. The company's paying special attention to this one. Close this out well, and we can give you every condition you want on next year's renewal."
"...Why me?"
The words barely made it out — cracked, hoarse.
"Hm? Oh, the special clause? That was the client's earnest request — wanting the best specialist on it. Five-plus years on Channel 7, you're the obvious choice. Think of it as an expression of trust in you."
Trust. Minhee seemed to have no idea what that word weighed.
"And if I refuse?"
On the other end of the line, Minhee's breath caught for a beat. Her tone dropped by about 1 degree.
"You're joking, right, Seojin? It's basic policy — an inmate can't refuse a contract assignment. Especially not one with a security clearance this high. Not to mention the penalty fees for refusing — you'd have a hard time working in this industry again. Let's not make this difficult for ourselves."
It was a soft threat. It was always like this. The company called them "sensory specialists," "precious assets" — but they were just parts. Replaceable, any time.
"I've sent the final consent form. Sign it and submit it within 1 hour. The first synchronization starts tomorrow at 9 a.m. sharp, so be ready."
The line cut off, one-sided. A "Final Consent Form" window appeared on the screen. The digital signature field sat blank, blinking. The instant she signed there, Seojin would become Kang-woo's body for the next 180 days. She would have to take his pain, his nausea, his death into her own nervous system. She would have to live out his ending in his place.
Seojin rose from her chair. She paced the room again. This time she didn't reach for the wall. Her steps were unsteady, weightless, as if gravity itself had left her. 10 years ago, she had left Kang-woo's side, unable to bear the flood of sensation his love brought — everything too intense to hold. She had erased her own senses and fled into a controlled world. Feeling someone else's pain was safer, somehow. Because pain bound by contract carried no emotion. Because it was just data.
But this wasn't data. This was Kang-woo.
The cursor on the screen blinked over the signature line. Like a heartbeat.
The cursor on the signature line wasn't hurrying her. It simply blinked at fixed intervals, indifferent, announcing its presence. It was part of the system — a string of code with no feeling, no will. But to Seojin, right now, that blink felt like Kang-woo's last heartbeat. A pulse that would stop the instant she signed, or else migrate into her own body and go on beating there.
She switched the communicator back on. Not the management team leader's line — a different number. The ring tone sounded three times before a crackle came through, followed by an old, weary voice.
"What is it."
"Mr. Ji. It's Seojin."
"I know. You're the only one who'd call me at this hour."
When Seojin was first assigned to Channel 7, it was Mr. Ji who'd taught her the survival tricks no one else bothered to explain. People called him the longest-surviving inmate the company had ever had — some called him a living legend, others called him a ghost.
"A long-term contract with security clearance 'Alpha' has been assigned to me. There's a special clause specifying the receiver's career background."
Seojin stripped out the emotion and delivered only the facts. Mr. Ji fell silent for a moment. Through the receiver came the sound of him dry-coughing — a lingering effect of over a year spent receiving a lung cancer patient's pain.
"The higher-ups are at their games again. The anonymity principle's just decoration they trot out whenever it suits them. So, which is it — a big-shot politician, or a conglomerate chairman?"
"...I don't know."
"Liar."
Mr. Ji's voice was like a blade. Seojin bit her lip. Lies didn't work on him. Those who handled the deepest layers of sensation could read the truth from the faintest tremor in another person's voice.
"Someone you have a personal relationship with?"
"..."
"Seojin. Get a hold of yourself. That contract — it's bait."
"What do you mean?"
"Have you forgotten the single most dangerous thing in sensory synchronization? 'Emotional contamination.' The moment you stop receiving another person's pain as data and start receiving it as a story, your nervous system begins mistaking it for your own. Taking in the pain of someone you know, on an unfiltered Channel 7? That's suicide. Your brain will burn out."
What he was saying was something Seojin already knew — the warning printed on the very first page of the manual. But the weight of those printed words and the weight of Kang-woo's name were nothing alike.
"Then why did the company approve a contract like this? It's a violation of regulations."
"Regulations don't exist to protect the weak. They exist to keep parts like us under control. The client simply paid enough to make ignoring them worthwhile. The company will do anything if there's money in it. And if you break? They'll just swap in a new part. That's how this business works."
It was a cold truth. Seojin had already known it, but hearing it confirmed through Mr. Ji's mouth made the weight of despair several times heavier.
"If it were you... what would you do?"
"Me?"
Mr. Ji let out a short laugh. A metallic rasp threaded through the sound of it.
"I'm already too far gone. I've taken in so much pain for so long that even if I left my body now, there'd be no sensation left in me to return to. But you're different. You're still standing on the line. This contract will make you cross it. And once you cross, there's no coming back."
He gave no answer. Instead, he gave her a choice. It was Seojin's to decide, hers alone. The line went dead. The room settled back into silence. Seojin walked to the window. The specially coated glass showed no view of the outside; instead, it cast a faint reflection of the room back at her. Her own face in the glass looked like a stranger's. Bloodless skin, eyes that gave nothing away. A face shaped over the last 5 years, optimized to receive pain.
What face was Kang-woo wearing now, in a body worn down to 58 kilograms, gasping out his last breaths. Was it the face she remembered from 10 years ago, or had the pain eaten through him until he'd become someone else entirely. Maybe, of everyone, he wanted only Seojin to remember his final self. In the most terrible way. As completely as possible.
Seojin turned back to the screen. The cursor was still blinking, same as before. She took hold of the mouse and clicked a different icon beside "Final Consent Form": [Send Message to Entruster (short text, one-time only)]. It was an exception built into the system — a way for the recipient to make one last confirmation of the entruster's intent before accepting the contract. A clause so rarely used that its very existence had been forgotten. Messages passed through the system administrator's review, but Seojin knew that certain keywords would carry them through encrypted instead.
Her fingers hovered over the keyboard for a moment. The first words to break 10 years of silence. What should she even send. Countless sentences flickered through her mind. Why me. How did you know it would be me. Questions tangled up with resentment, longing, and rage. But what she typed out was something else entirely.
[Do you still love rainy days?]
It was a code only the two of them knew. Afternoons they'd spent listening to the rain by the worn-out window of the studio they'd shared. Hours when it felt like all the noise in the world had been washed away by the sound of the rain, leaving only the two of them behind. In one of those hours, Kang-woo had whispered to her: 'Because you're here, I've come to love rainy days.'
She pressed send. A system message appeared: [Message sent successfully. Awaiting the entruster's reply.] The ball was in Kang-woo's court now. Her next 180 days would hinge on whatever he answered. If he still remembered their time together, he might withdraw the contract — if he realized just how cruel this was. Seojin told herself that was the last hope she had left. At the same time, a contradictory wish rose up in her: that he wouldn't remember at all. That he'd simply forgotten everything and needed nothing more than the best specialist there was. That all of this was nothing but her own mistaken hope.
Time stretched out like something infinite. In the silence that filled her room, the ticking of the system clock was the only rhythm. One minute. Five minutes. Ten. Seojin sat motionless, staring at the screen. Every nerve in her body had converged on a single point on the monitor. Maybe no reply would come. Maybe that would be better. His silence would mean either refusal or proof that he'd forgotten — and either way, it would give her a reason to run.
That was when it happened. A small envelope icon appeared in the bottom right corner of the screen. She thought she could hear her heart slamming against her ribs, the sound filling the room. With trembling hands, she clicked the icon. A pop-up window opened, holding a short sentence.
[The rain's stopped now. I need you instead.]
Seojin stopped breathing. She heard the last ember of hope go out. This was not a distress signal. It wasn't the apology for the past, or the request to withdraw the contract, that she'd secretly hoped for. This was the final invitation — in its most selfish, most desperate, most naked form. Kang-woo had cut off every avenue of escape. He knew. He knew Seojin could never turn away from him. That she could never pretend not to see his pain.
Dr. Ji's warning echoed in her mind. 'You're still standing on the border. Cross it once, and you can never come back.'
Ten years ago, she had fled the flood of sensation Kang-woo gave her. His love, his joy, everything about him was so intense she thought she would lose herself in it. So she chose this cold world instead, a world where she controlled sensation and simply received data. But in the end, the place she had arrived at was the cruelest concentration of all those sensations. His death. Fate seemed intent on closing her escape with the bitterest irony.
Seojin rose from her seat. She no longer paced the room. The anxiety was gone. In its place, something cold and hard had settled. It was resolve.
She sat back down before the screen. Her fingers moved across the keyboard without hesitation. She closed the [Final Consent] window and clicked the [Decline Contract] icon beneath it. In the reason field, she wrote a short line: 'Declining the contract for personal reasons on the recipient's part.' When she pressed submit, the screen changed. [Contract declined. Assignment withdrawn.] The system's flat, toneless voice finalized her decision.
***
The next morning, Seojin stood in front of the hospital. Not the sync room, not the white walls, not the constant 22 degrees. Cold rain fell on her umbrella-less shoulders.
The night before, she had pressed [Decline Contract]. When Minhee called right afterward, she didn't answer. Instead, she put her company badge in a drawer and took the first bus of the morning.
The automatic doors opened, and the lobby air, thick with the smell of disinfectant, met her. This place was no longer a neutral zone where she briefly stored someone else's pain. She had come here without electrodes, without gel, without a channel.
When she opened the door to his room, Kang-woo was sitting by the window. A body of 58 kilograms, thin wrists, an arm with an IV line hanging from it. He saw her wet shoulders and his eyes went wide.
"...It's raining."
His voice was cracked.
"Yes."
Seojin sat down beside him and took his dry hand with her wet one.
"It stopped. I came instead."
His fingertips trembled faintly. It was warmth that passed through no data, no approval, no contract. His pain remained his own. Seojin did not transfer it into her own nervous system. She simply held on to his hand, and together they listened to the sound of rain outside the window.
