The Seoul Public Library had a restricted section, and three days into looking for it, Jiho was starting to think the restriction was less about security and more about making sure no one stumbled into despair by accident.
He'd followed a trail of breadcrumbs β old hunter forum posts, whispered references at the Pub, a hand-scrawled note in a bathroom stall at the Association that read *"Basement. Section K. Bring your license and your appetite for bad news."* The trail led to the library's sub-basement, behind a door that required a hunter ID to unlock, into a reading room that smelled like preservation chemicals and regret.
The archivist was an elderly woman named Mrs. Cho who looked like someone who baked cookies for the neighborhood and read apocalyptic texts on her lunch break. She checked his license, noted the designation with an eyebrow that said she'd seen a few things come through here, and led him to a back table.
"What specifically?"
"Contract holders. People who gained abilities throughβ non-standard methods."
"Non-standard." She repeated the word like she was tasting it and finding it insufficient. "That's one way to describe selling your soul." Her eyes β sharp, undecorated by the soft grandmotherly packaging around them β studied him. "Most hunters prefer to pretend the subject doesn't exist. Easier to sleep."
"I prefer to know what I'm building on."
Something shifted in her expression. Not approval. Recognition.
She disappeared into the stacks and returned with three folders and a leather-bound journal that predated the building by at least a century. She set them down with the care of someone handling load-bearing documentation.
"The folders are Association records. Seventeen confirmed cases over fifty years. The journal is pre-Association β first-person accounts from hunters who encountered demons in the field, before anyone decided to organize the response."
"Thank you."
"Don't. Not until you've read them." She turned to leave, then paused. "The common thread is the same in every file. They burn bright. Then they burn out. Not one exception in fifty years of records."
She left him alone with the evidence.
---
The folders were a demolition report.
Seventeen lives. Seventeen contracts. Seventeen case studies that read like autopsy reports for people who were still technically alive when the file was opened.
*Case #3: Kim Sunhee, age 34. Contracted 2004. Healing abilities in exchange for 25 years. Personality changes at month 18. Empathy loss by month 24. Disappeared day 743. Assumed transformed.*
*Case #7: Park Jisoo, age 19. Contracted 2011. Combat abilities. Reckless usage. Partial transformation month 8. Killed by Association hunters.*
Nineteen years old. Eight months from signing to death.
*Case #12: Choi Dongwook, age 41. Contracted 2019. Perception abilities. Attempted to find contract loopholes. Found dead in apartment. No visible cause. Contract enforcement assumed.*
Jiho turned pages. Each case was a variation on the same blueprint β the same structural failure, the same sequence of compromises, the same inevitable conclusion. The specifics varied: some burned fast, some burned slow. Some went quietly, some violently. But the trajectory was identical.
He found himself doing what he'd always done with blueprints: looking for the load paths. The stress concentrations. The points where the design failed not because of a single catastrophic error but because of accumulated small ones.
The fifty percent threshold was consistent. Below that line, every case showed personality erosion. Emotions flattened. Empathy degraded. The human parts of the architecture β the parts that weren't load-bearing in a structural sense but were load-bearing in every other sense β started giving way.
He was at ninety-six percent. Still in the green zone. But if he kept spending at the rate of that first dungeonβ
He did the math on the back of an envelope Mrs. Cho had left on the table. Three and a half percent per dungeon. One dungeon per week. Thirteen weeks to hit fifty percent.
Three months. The same amount of time the oncologist had given him before the contract.
Different diagnosis. Same timeline. The irony was structural.
But then β and this was the thing that kept him reading past midnight β not every case followed the worst trajectory. Case #9: Yoo Hyunki, age 52. Six years. The longest survivor in the records. His method: minimal special ability use, reliance on baseline physical capabilities, conservative engagement strategy.
Six years. And he'd died to a dungeon break, not to the contract. External cause. The foundation had held.
Conservative use. Baseline reliance. Save the expensive tools for the jobs that actually required them.
The engineering principle was obvious. He'd known it since his first day on a construction site: you don't run the generator at max capacity for a job that needs a hand drill.
He started taking notes.
---
The journal was different. Older. Handwritten in ink that had faded to brown, the pages foxed with age spots that looked like a building's water damage history.
*November 3rd, 1952. Met a hunter today who speaks to shadows. He says a being offered him power in exchange for service, and he accepted because his village was dying in the winter famine. He regrets nothing, though he knows the cost. "Every gift has a price," he told me. "The demons are honest about theirs. It's the human gifts you should distrust β the ones that pretend they're free."*
The hunter was listed as "Park." No surname. No fate recorded.
*March 17th, 1968. Killed a creature today that used to be a man. Contract holder, based on the symbols burned into his skin. His patron had marked him like livestock. He begged me to end it while he still remembered being human. I did. I don't know if that was mercy or murder. I don't know if the distinction matters.*
Jiho's hands were steady. His pulse wasn't. The journal entry was sixty years old and it described his future with the precision of a construction timeline β phase one, phase two, inevitable completion date.
He touched his chest. The power hummed behind his sternum. No visible marks. The demon had left no brands, no symbols, no external evidence. The contract was internal. Hidden. A renovated structure that looked fine from the outside.
*You're mine*, the warmth seemed to say. *I'm just waiting for you to run out of reasons to pretend otherwise.*
He pulled his hand away.
---
Three days in the archives. No soul expenditure. No abilities used. Just reading and calculating and assembling a picture from seventeen case files and one handwritten journal that no one had checked out in eleven years.
By the end, he had three conclusions:
First: the contract was a one-way valve. Soul went out. Nothing came back. Regeneration slowed the process but didn't reverse it. The system was designed to deplete, and the question wasn't whether but when.
Second: efficiency was the only variable under his control. Not the contract terms. Not the regeneration rate. Not the ten-year timeline. But how much he spent per engagement β that was his to manage. The difference between Case #7 (dead in eight months) and Case #9 (alive for six years) was discipline.
Third: other contract holders existed. The files referenced "networks," "coded communications," "underground meetings." People who'd signed the same kind of deal finding each other in the dark, sharing information the way survivors share water rations β carefully, suspiciously, but necessarily.
He needed to find that network. Not because they'd have answers β the files suggested they didn't β but because they'd have data. Other cases. Other strategies. Information that might extend his timeline from the worst-case to something closer to the best.
He returned the files to Mrs. Cho.
"Find what you were looking for?" she asked.
"Found what's there. Still looking for what isn't."
She studied him. "You know, in thirty years of running this section, I've had maybe twenty hunters come through. Most of them were researchers. Academics. Writing papers."
"And the others?"
"The others were looking for something personal." She filed the journal carefully, handling it with the respect of someone who understood that old records carried weight. "They never came back a second time. I never asked why."
He nodded and left.
That night, he created an anonymous forum account and posted a message that he'd found in the notes of Case #14, hoping the phrasing was still current:
*New hunter looking for training partners. Interested in learning from others who understand what it means to fight on borrowed time.*
Borrowed time. The key phrase. A signal buried in innocuous language, the way you'd hide rebar inside a decorative column β functional structure disguised as something ordinary.
He closed the browser and walked home.
Three days later, he'd wish he hadn't opened that file.