Summoner of the Fallen

Chapter 62: Maintenance Frequency

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Yoon's records arrived at 6 AM on day four β€” a manila envelope slid under the safe house door by a courier who didn't ring the bell. Jihoon found it during his perimeter check. The envelope contained seven pages, handwritten, no headers, no letterhead, no indication of origin. Analog security. The director's signature approach to information that couldn't exist on any server.

Yeji spread the pages on the kitchen table while the kettle boiled. Seven missing hunter reports from the Chungcheong region. Seven people who'd entered dungeons in the area over the past three years and never walked out. The reports were Bureau originals β€” the font, the formatting, the institutional language that government forms used when documenting the disappearance of people who'd signed waivers acknowledging the possibility of their own deaths.

Four of the seven were women. Three men. Ages ranging from nineteen to forty-one. Ranks from E to C. The C-rank was notable β€” a hunter named Baek Seungho, forty-one, tank class, who'd entered the Chungcheong dungeon fourteen months ago on what was classified as a routine D-rank survey and never emerged. His party reported the dungeon had "exhibited anomalous spatial properties inconsistent with rated difficulty." The party withdrew. Baek Seungho did not withdraw with them.

His party's report used the word "inconsistent" three times.

*The nameless spirit,* Yeji said inside the bond. Addressing Eunsoo, Minwoo, anyone listening. *Tank class. The combat instinct. The way he moved.*

*You're assuming,* Eunsoo said. Clinical. The healer's assessment arriving with the precision that medical personnel used when distinguishing between diagnosis and guess. *A tank class spirit who'd been trapped for fourteen months in a B-rank dungeon classified as D-rank. The timeline fits. The class fits. But without cognitive markersβ€”*

*He moved like a tank who'd trained for twenty years,* Minwoo said. The ghost tank's voice carrying something that hadn't been there since the mountain β€” engagement. Interest. The professional recognition of one tank assessing another's muscle memory. *That's not fourteen months of experience. That's decades. The forty-one-year-old.*

Baek Seungho. Forty-one. Tank. Twenty-two years of registered hunter activity. Three guild affiliations over his career, the last one a mid-tier operation based in Daejeon. Married. One daughter, age sixteen. The missing person report had been filed by his wife.

Yeji read the wife's statement. The handwriting β€” not Yoon's, the original document's cursive β€” was steady for the first paragraph and deteriorated by the third. The letters getting tighter. Smaller. The physical record of a woman's composure compressing under the weight of the form's questions.

"He always came back," the wife had written. "He always said the D-ranks were easy. He said they were paychecks."

Paychecks. A forty-one-year-old C-rank tank running D-rank dungeons for income because C-rank dungeons were dangerous and D-rank dungeons were money and the money paid for a daughter's education and a mortgage and a life that required a living father. He'd entered a paycheck dungeon and found a B-rank nightmare wearing a D-rank mask.

*Baek Seungho,* Yeji said. Inside the bond. Naming the spirit who'd died without a name. Giving the name to the empty space in the covenant where a tank's instinct had lived for less than an hour before a golem erased it. *His name was Baek Seungho.*

The bond received the name. The covenant's architecture absorbed it the way walls absorbed paint β€” permanently, changing the surface without changing the structure. The empty slot hummed at a frequency that was slightly different now. Not filled. Not healed. But labeled.

Minwoo said nothing. The ghost tank's silence was its own kind of acknowledgment β€” the quiet of a dead father hearing the name of another dead father and recognizing the shape of a life that had ended in a room that shouldn't have been as dangerous as it was.

---

"Absolutely not."

Eunsoo's voice inside the bond carried the edge that medical professionals developed when patients proposed doing the thing that the medical professional had explicitly told them not to do.

"Three percent," Yeji said. "Directed at the splinter. Not outward. Not contact. Just β€” looking at it. The same scan you had me do on day one."

*The scan on day one was diagnostic. What you are proposing is experimental. You want to interact with the splinter's frequency. To attempt to reproduce the maintenance resonance. That is not a scan. That is an intervention on damaged infrastructure using an untested mechanism that could worsen the damage, expand the splinter, or trigger a sympathetic resonance event that collapses your channel capacity further.*

"Can you monitor in real time?"

*Can I monitor you making a mistake in real time? Yes. I am capable of watching you harm yourself with full clinical awareness. That does not make the harm acceptable.*

Yeji sat cross-legged on her bedroom floor. The safe house's thin carpet under her. The gray January light through the window. She'd closed the door. Jihoon was in the kitchen reviewing the missing hunter files. Changwon was resting β€” the veteran's ribs demanding stillness and the veteran supplying it with the discipline of a man who understood that healing was an operation and operations required protocol. Junghwan had gone out for supplies. Hayeon was in her room, writing.

"Eunsoo. The splinter carries the maintenance frequency. The frequency that historical [Requiem] users used to repair guardian containment. If I can learn to reproduce it β€” even a fraction β€” that's capability we don't have. That nobody has. The guardians are degrading. Seven to ten years. The splinter might be the only way toβ€”"

*The splinter might also be a piece of a hostile entity's assault frequency that has lodged in your primary perceptual conduit and that any interaction could activate in ways we cannot predict. The maintenance frequency correlation could be coincidental. The echo's harmonic alignment with the historical repair signal could be a property of the containment architecture's resonance characteristics rather than an indication that the splinter is a viable tool.*

"Could be."

*Yes. Could be. And 'could be' is insufficient justification for risking further damage to a channel that is currently operating at fifty-six percent of capacity with no recovery pathway until the splinter is addressed.*

"Fifty-six percent is my ceiling anyway. If I don't learn to use this, fifty-six percent is what I've got. That's not enough. Not for the remaining guardian sites. Not for anything that matters."

Silence from the healer. Three seconds. Five. The clinical calculation running behind the silence β€” the physician weighing the patient's argument against the physician's assessment and the weighing producing a result that the physician didn't like but that the physician's honesty required her to acknowledge.

*Three percent aperture. Maximum. Directed inward at the splinter. No attempt to produce resonance until I have established a baseline reading of the splinter's current state. If I observe any expansion of the splinter's frequency footprint, any change in its harmonic profile, any increase in the interference pattern that is blocking your regeneration β€” we stop. Immediately. Non-negotiable.*

"Agreed."

*And you will document every sensation. Every perception. Every change in internal state. I need data, not heroics.*

"Understood."

Yeji closed her eyes. Drew the three-percent aperture open β€” the familiar sliver, the squinting-through-a-crack sensation that turned her [Requiem] channel inward. The recursive disorientation of looking at the lens with the lens. The migraine registering the aperture as a low pulse behind her left eye.

The splinter was there. At the fifty-six-percent mark. A knot of foreign frequency embedded in the channel's tissue β€” spiritual shrapnel, Eunsoo's metaphor, and the metaphor was accurate. The splinter's frequency was distinct from the channel's native resonance the way a shard of glass was distinct from the skin around it. Wrong material. Wrong vibration. Integrated by force rather than design.

*Baseline established,* Eunsoo said. *The splinter's frequency is stable. Third harmonic of the Gangwon fragment's assault signal. Consistent with my previous analysis. Proceed β€” carefully.*

Yeji focused. Not on the channel. Not on the splinter's damage. On the frequency itself. The vibration. The specific pitch of the third harmonic β€” the maintenance wavelength that the historical visitors had used to tune the guardians' containment. She tried to hear it not as damage but as signal. Not as shrapnel but as β€” a tuning fork. Struck by the wrong hand, vibrating at the right pitch.

The frequency was thin. High. Not a sound that ears could process β€” a resonance that existed in the spectrum of spiritual perception, the bandwidth that [Requiem] occupied. The splinter vibrated at approximately 847 hertz in the spiritual spectrum β€” a number that meant nothing in acoustic terms but that registered in Yeji's channel as a clear, identifiable pitch.

She reached for it. Not physically. Perceptually. The way a singer matched a note by adjusting their voice until the vibration aligned. She pushed her [Requiem]'s native frequency toward the splinter's pitch. Slowly. Incrementally. The way you'd tune a guitar string β€” tightening, tightening, listening for the moment when the wavering stopped and the two frequencies locked.

The channel resisted. Her native frequency was lower β€” the baseline [Requiem] resonance that she'd operated at since awakening, the fundamental pitch of her ability. Pushing it upward required effort. Mental effort. The spiritual equivalent of holding a heavy note at the top of your range.

The two frequencies approached each other. The gap narrowing. The wavering between them producing an interference pattern β€” a beating, oscillating sensation that throbbed in her channel like a second heartbeat.

Closer. The beating slowed. The interference pattern smoothing. The two frequencies converging.

And then β€” contact.

The moment her [Requiem]'s adjusted frequency matched the splinter's pitch, the splinter responded. Not violently. Not the assault frequency's aggressive expansion. Something else. A resonance. A harmonic lock. The splinter's vibration and her channel's adjusted frequency aligning and producing a combined output that was different from either source β€” a third frequency, born from the meeting of the two.

The third frequency was the maintenance signal.

Yeji felt it like warmth. Not physical warmth β€” spiritual. A vibration that felt like the opposite of the fragment's assault. Where the assault was entropy, pressure, the anti-shape of something trying to break free β€” the maintenance signal was structure. Order. The frequency of walls holding. Of cages intact. Of containment maintained.

*I'm recording,* Eunsoo said. Her clinical tone strained. The healer perceiving the same thing Yeji perceived but from the medical perspective β€” the channel's tissue responding to the maintenance frequency with something that looked, from the inside, like repair. Like the regeneration that had stalled at fifty-six percent was briefly, fractionally, resuming. The splinter's interference pattern softening. The channel's tissue around the splinter relaxing from its inflamed, defensive state.

The maintenance signal lasted four seconds.

Then the cost hit.

Yeji's channel dropped. Not gradually β€” the gauge slamming downward like a needle on a broken instrument. Fifty-six to fifty-four to fifty-two. Four percentage points in two seconds. The effort of matching the splinter's frequency had consumed channel capacity that the channel couldn't spare, and the consumption was immediate and non-negotiable.

*Stop,* Eunsoo said. Sharp. *Close the aperture. Now.*

Yeji closed. Three percent to zero. The maintenance signal died. The warmth vanished. The migraine expanded β€” not the dull ache of recovery but the sharp spike of active damage. She pressed her palms against her temples and the pressing didn't help because the damage was deeper than pressure could reach.

*Fifty-two percent,* Eunsoo reported. The healer's voice carrying controlled fury β€” the register of a physician whose patient had just proven that the thing the physician had warned would happen had happened. *Four percent loss. In four seconds. That is a consumption rate of one percent per second. At that rate, sustained production of the maintenance frequency would deplete your channel to zero in fifty-two seconds. At which point you would be a psychology student with no abilities, permanent neural damage, and the inability to perceive, summon, or communicate with any spirit. Including us.*

The last two words landed. Including us. Eunsoo, Minwoo, Nari, Yuna. The bond. The covenant. The dead people living inside her ability. Zero percent meant silence. Meant the voices going dark. Meant Nari alone with no one to hear her. Meant Minwoo watching through a window that had gone opaque.

"I heard it," Yeji said. Aloud. Her voice rough. The migraine's spike making speech feel like pushing words through gravel. "The maintenance signal. It was real. Four seconds, but it was real."

*Four seconds that cost you four percent of your operational capacity. Which was already fifty-six percent. Which is now fifty-two percent. Which means your ceiling has dropped further and the recovery from this additional loss will be impeded by the same splinter that you just attempted to weaponize.* Eunsoo paused. The pause of a healer whose clinical rage was being processed into actionable assessment. *Forty-eight to seventy-two hours before you return to fifty-two percent. Not fifty-six. The previous ceiling may have been further damaged by the attempt. I need to assess whether the interaction expanded the splinter's footprint.*

"Did it?"

Another pause. Longer. The internal scan running β€” Eunsoo's healing perception examining the splinter's current state against the baseline she'd recorded minutes ago.

*No. The splinter's footprint is unchanged. The damage is to the surrounding tissue, not the splinter itself. Your channel burned fuel it didn't have. The infrastructure is intact but depleted.*

Small mercy. The splinter hadn't grown. The experiment had cost capacity but not territory.

*That does not make the experiment acceptable,* Eunsoo said, reading Yeji's relief. *That makes the experiment lucky. Lucky is not a medical category I endorse.*

---

Hayeon was waiting in the hallway when Yeji opened her bedroom door.

Not standing. Sitting. The analyst had positioned herself on the hallway floor with her back against the wall and her notebook open across her knees and her pen behind her right ear, which was the position that Hayeon occupied when she'd been waiting long enough to stop performing the waiting. Her legs were extended across the narrow hallway. Her shoes were off. The socked feet and the open notebook and the pen-behind-ear informality all communicating the same thing: she wasn't going anywhere, and she'd been here long enough to get comfortable with not going anywhere.

"I need five minutes," Hayeon said.

"I have a headache."

"I know. I heard you vomit ten minutes ago. The walls are thin." The analyst's eyes were steady. The professional mask was on β€” the analyst's default interface, the expression that protected by presenting competence. But the mask's edges were showing. The way a well-fitted coat showed its seams when the wearer moved too much. "Five minutes. Then I'll go back to my room and continue writing the report that you and Director Yoon are using as a controlled information channel."

The hallway held the sentence.

Yeji leaned against her door frame. The migraine at fifty-two percent was worse than the migraine at fifty-six β€” a distinction that shouldn't have been meaningful but that the body registered with the precision of a machine measuring its own degradation.

"Okay."

Hayeon didn't stand. Yeji didn't sit. The asymmetry was its own statement β€” the analyst on the floor, the summoner in the doorway, neither person yielding the position they'd claimed.

"I've been doing this for six years," Hayeon said. "Intelligence analysis. Bureau. Not field ops β€” the other kind. The kind where you read forty reports a day and the reports contradict each other and your job is to find the signal in the noise. Six years of signal-finding. It's what I do." She turned a page in her notebook. Not reading it β€” the gesture habitual, the way some people fidgeted with pens. "So when a team I'm assigned to starts showing me certain signals and hiding others, I notice. Because noticing is my job. And pretending I don't notice is not my job. It's not even something I'm good at."

"Hayeonβ€”"

"The Gangwon debrief. Classified above my tier. Fine. Classification exists. I accept that. The Chungcheong operation β€” I was there. I saw the dungeon. I saw the misclassification. I saw the extraction. I wrote what I saw. And then Yeji told Director Yoon things on the phone that I wasn't supposed to hear, except the walls are thin and showers are not as loud as field operatives think they are."

Yeji's stomach tightened. Not the vomiting β€” that was done. The tightening of a person hearing the consequences of insufficient operational security delivered by the person whom the insufficient security had failed to contain.

"I'm not asking what you told Yoon," Hayeon continued. "I'm not asking what the guardian showed you. I'm not asking about the saboteur theory that you discuss when you think I'm asleep or in my room or otherwise not listening. I am telling you that I know you are managing my information diet. I know the debrief classifications are tactical, not procedural. I know Director Yoon's visit was about something that my reports are being used to obscure. And I know that the five of you β€” including Yoon β€” have decided that my function is to be a conduit through which Dohyun receives what you want him to receive."

The hallway was very quiet. The safe house's ambient noise β€” the refrigerator humming, the radiator clicking, the building's old pipes doing whatever old pipes did β€” all of it fell away behind Hayeon's voice.

"I understand," Yeji said.

"You understand. That's your phrase. 'I understand.' You say it instead of agreeing. You say it instead of conceding. You say it when you intend to continue doing exactly what you were doing before the conversation started." Hayeon looked up from the notebook. The analyst's eyes β€” dark, steady, the gaze of a woman who read forty reports a day and found signals in noise and who was currently reading the signal in Yeji's voice. "I'm not asking you to stop. I'm not asking you to include me. I'm telling you that I see it. Because you should know that I see it. Because operating under the assumption that your liaison is blind to the management is a tactical error, and tactical errors compound."

"What do you want?"

"Nothing you'll give me." Hayeon closed the notebook. Placed the pen on top. The gestures final β€” the meeting's agenda completed, the analyst's points delivered. "I'll continue filing my reports. The reports will contain what I observe. Not what I infer. The distinction matters β€” Dohyun reads between lines too, and inference in a liaison report is a flag that observation isn't. I will report what I see, not what I think it means. That's the professional standard, and it's the only thing I'm offering."

"That's β€” measured."

"I'm an intelligence analyst. Measured is the product." She stood. Picked up the notebook. Put the pen behind her ear. The informality folding back into professionalism β€” the socked feet notwithstanding. "One more thing. The spirit you lost in Chungcheong. The one without a name."

Yeji's throat tightened.

"Baek Seungho. C-rank tank. Forty-one. Missing fourteen months. I pulled his file from the Bureau database six hours ago because I'm an intelligence analyst and pulling files is what I do when people around me are grieving a person they can't identify." She looked at Yeji. The mask was there but the seams were wider. "His wife's name is Jaehee. His daughter is Minjoo. She's in her second year at Daejeon Arts High School. She paints."

Hayeon walked past Yeji and into her room. The door closed. The latch clicked. The hallway held the absence.

Yeji stood in the doorframe with the migraine at fifty-two percent and the name Baek Seungho sitting in two places now β€” in the covenant's empty slot and in the analyst's notebook β€” and the name in the notebook arriving from a woman who'd just explained exactly how she was being used and who'd used the explanation's final seconds to demonstrate that being used didn't prevent her from being useful.

*I like her,* Minwoo said. Inside the bond. The ghost tank's voice carrying a quality that hadn't been there in days β€” warmth. The warmth of a dead father hearing that another dead father's daughter had a name. *She's sharp. And she brought you his daughter's name. That's not intelligence analysis. That's care.*

Yeji pressed her palm against the doorframe. The wood solid under her hand. The migraine pulsing. Hayeon's words in the hallway hanging in the space between what was said and what it meant.

"I know," she said.

---

Yuna's first healing attempt inside the bond happened at midnight.

Not planned. Not scheduled. The young healer's initiative β€” the D-rank ghost who'd been standing one step inside the covenant's doorway for four days and who had, in those four days, been absorbing the bond's internal dynamics with the observational intensity of a woman who'd spent her living career studying how to fix things and whose studying hadn't stopped when the living career ended.

Yeji felt it as a tickle. Low. At the edge of her perception β€” the fifty-two-percent mark where the splinter sat and the regeneration stalled. A sensation that wasn't pain and wasn't relief and wasn't the splinter's hum. Something new. Warm, but a different warm than the maintenance signal's structural warmth. Biological warm. The warmth of tissue being attended to.

*Yuna,* Eunsoo said. Sharp. The healer's voice cutting through the bond's ambient noise. *What are you doing?*

*Healing.* Yuna's voice was small but certain. The certainty of a person who knew one thing well and was doing the one thing. *The tissue around the splinter. It's inflamed. I can see the inflammation. I'm a healer. I heal inflammation.*

*You are a D-rank healer attempting an intervention on infrastructure you don't understand, without consultation, withoutβ€”*

*I understand inflammation. I understand tissue that's swollen and angry and not healing because something foreign is sitting in it. I was a hospital volunteer before I awakened. I watched orthopedic surgeons deal with fracture fragments in soft tissue. The body builds scar tissue around foreign objects. The scar tissue restricts mobility. You reduce the inflammation, you slow the scarring, you give the body time to decide what to do with the fragment. Basic wound management.*

Eunsoo went quiet. Not silenced β€” processing. The S-rank healer confronted with a D-rank healer's argument that was, from a fundamental medical perspective, not wrong. Wrong in scale. Wrong in application. But the underlying principle β€” reduce inflammation to slow scarring around a foreign body β€” was sound orthopedic medicine applied to spiritual architecture.

*Continue,* Eunsoo said. The word extracted from the clinical healer like a tooth. *At minimum output. I will monitor.*

The tickle intensified slightly. Yuna's healing touching the inflamed tissue around the splinter β€” not the splinter itself, not the foreign frequency, but the channel's own tissue that had been reacting to the splinter's presence for six days. Swollen. Angry. Building the spiritual equivalent of scar tissue that restricted the channel's function.

The warmth spread. Gentle. D-rank output β€” the minimal therapeutic energy of a healer who'd died before reaching her potential and whose potential was being applied to a target that exceeded her rank by orders of magnitude. Like using a candle to warm a cathedral. Insufficient. But present.

And then the splinter did something unexpected.

The hum changed.

Not louder. Not softer. The pitch shifted. The splinter's steady 847 hertz in the spiritual spectrum drifting downward by a fraction β€” a tiny adjustment, barely perceptible, as if the splinter's foreign frequency was responding to Yuna's healing warmth the way a tuning fork responded to temperature. Slightly. Inconsistently. But measurably.

*Stop,* Eunsoo said. Not sharp this time. Interested. The clinical tone that physicians used when the patient's body did something the textbook didn't predict. *Hold your current output. Don't increase. Don't decrease. Stay exactly where you are.*

Yuna held. The D-rank output steady. The warmth constant. The splinter's pitch drift stabilizing β€” not returning to its original frequency, not continuing to shift, but holding at the slightly lower pitch that Yuna's healing had induced.

*The splinter's frequency has decreased by point-three hertz,* Eunsoo reported. *The healing energy is interacting with the foreign body's vibrational state. Not removing it. Not neutralizing it. But β€” the metaphor is imprecise β€” softening it. The way heat softens metal. The splinter's rigid frequency is becoming fractionally more flexible in the presence of D-rank healing energy.*

*Is that good?* Yuna asked.

*I don't know. It's new. I need to analyze whether the flexibility is a precursor to integration β€” the splinter being absorbed into the channel's native tissue β€” or a precursor to dispersal β€” the splinter fragmenting into smaller pieces that distribute through the channel. The two outcomes are very different. One is helpful. The other is catastrophic.*

*But the inflammation is reduced,* Yuna said. Stubborn. The young healer clinging to the thing she could confirm. *Look at the tissue around the splinter. The swelling is down. I did that. That part is just β€” healing. Regular healing. Not the frequency stuff. The tissue is less angry.*

*The tissue is less inflamed,* Eunsoo corrected. The correction a concession β€” the S-rank healer acknowledging the D-rank healer's work while maintaining clinical terminology. *You have reduced the acute inflammatory response around the splinter by approximately twelve percent. That is meaningful. That may slow the scar tissue formation. That may preserve channel flexibility in the damaged zone. That is β€” good work.*

The last two words arrived with the reluctance of a teacher praising a student who'd acted without permission and gotten results that the teacher couldn't dismiss.

*Thank you,* Yuna said. *Can I stop now? I'm tired.*

*Yes. Stop. Rest. I'll continue monitoring the splinter's frequency drift.*

Yuna's healing faded. The warmth withdrawing. The splinter's pitch holding at its adjusted frequency β€” point-three hertz lower than its baseline, the difference nearly imperceptible but documented in Eunsoo's clinical awareness.

*She's useful,* Minwoo said. The ghost tank's assessment delivered with the practical appreciation of a man who'd spent his living career evaluating teammates. *D-rank output but smart application. And the splinter responded. That's something.*

*That's something we don't understand,* Eunsoo said. *Which is exactly the kind of something that requires study, not enthusiasm.*

*Both,* Yeji said. *It requires both.*

---

The phone rang at 3:47 AM.

Yeji had been lying awake. Not by choice β€” the fifty-two-percent migraine was a restless tenant, preventing the sleep that the depleted channel demanded. She'd been staring at the ceiling. Counting the water stain's branches. Losing count. Starting over. The insomniac's ritual of occupying the mind with meaningless tasks while the mind processed meaningful ones beneath the counting.

Yoon's number. Unlisted. The screen showing digits that Yeji had memorized rather than saved β€” another analog security measure, the director's contact existing in neural storage rather than electronic.

"Director."

"The correlation is confirmed." Yoon's voice was tight. Not the controlled professional register β€” something underneath. Something that sounded like Yoon at 3:47 AM, which was a version of the director that Yeji hadn't heard. The version that existed when the mask was off because the audience was one person on an encrypted line in the dark. "The Cheonmin Foundation's probe schedule at both facilities matches the feeding events at the corresponding guardian sites. Within a six-hour window. Every time the probes activate, the fragment's energy increases within six hours. Sixteen data points across four months. Sixteen out of sixteen."

Sixteen for sixteen. Not correlation. Causation with a margin of error so small it was statistical certainty.

"The probes are the mechanism," Yeji said.

"The probes are the mechanism. That's confirmed. What I'm about to tell you is not confirmed. It's preliminary. My contact pulled personnel files from the Chungcheong facility β€” the one near the guardian site you just visited. The facility employs fourteen researchers and six support staff. Thirteen of the fourteen researchers have standard Cheonmin Foundation credentials. Legitimate scientists. Background checks clear. Employment histories consistent."

"Thirteen of fourteen."

"The fourteenth researcher was hired nine months ago under a temporary contract. Her credentials are immaculate. Advanced degrees. Publication history. Institutional affiliations. Everything checks out on paper."

"But."

"But her publication history includes three papers co-authored with a colleague at Seoul National University's Spiritual Mechanics department. The colleague is real. The papers are real. They were published between 2019 and 2022. The problem is that the fourteenth researcher's name doesn't appear on any version of those papers that existed before seven months ago. The original publications list a different co-author. The name was changed retroactively in the digital archives."

The bedroom was dark. The phone's light on Yeji's face. The ceiling's water stain invisible in the darkness.

"Someone edited her into existence," Yeji said.

"Someone with access to academic databases, institutional records, and the Cheonmin Foundation's hiring system created a person. A paper trail. A career history. And planted that person inside the facility that is operating the probes that are feeding the fragments."

"Who is she?"

"That's the problem." Yoon's voice dropped. The tightness compressing into something smaller and harder. "The planted identity is thorough. My contact couldn't break it. The woman exists β€” she shows up for work, she conducts research, she has a physical presence that multiple employees have interacted with. She's real. But her history before nine months ago is fabricated."

"Can you get a photo?"

"Already working on it. Facility security footage. My contact is being careful β€” the Foundation monitors its own surveillance systems. Pulling footage without alerting the security team requires time."

"How much time?"

"Days. Maybe a week." A pause. The sound of Yoon breathing on the other end β€” the director at 3:47 AM, in her car or her apartment or wherever directors went when they made calls that couldn't wait for morning. "There's one more thing. The fourteenth researcher's temporary contract expires in three months. The contract includes a clause that I've never seen in a research appointment β€” upon termination, all research data, personal files, and facility access records are to be purged from the Foundation's systems. Not archived. Purged. The contract is designed to erase her."

The bedroom held the information. Yeji held the phone. The migraine held the fifty-two-percent mark where the splinter hummed at a frequency that was point-three hertz lower than it had been six hours ago because a dead D-rank healer had touched the thing that everyone else was afraid to touch.

"A ghost," Yeji said. "Someone planted a ghost inside the Foundation."

"A living ghost. Someone who exists long enough to do what she was sent to do and then disappears. The question is who sent her and what she's doing and whether she's the saboteur or the saboteur's instrument."

"Or whether she's something else entirely."

"Yes." Yoon's voice was flat. The three-AM flatness of a woman who'd been finding answers that generated more questions and whose questions were multiplying faster than her answers and the multiplication was the shape of the thing they were facing. "Get sleep. I'll have more in forty-eight hours."

The call ended. Yeji lay in the dark with the phone on her chest and the migraine behind her eyes and the ghost inside the Foundation who was real and fabricated and temporary and whose temporary existence was designed to end with erasure.

In the bond, Nari stirred. The child ghost's voice small and drowsy from the depths where she'd retreated from the splinter's hum.

*The lady on the phone sounded scared,* Nari said.

Yeji closed her eyes.

Yoon hadn't sounded scared. Yoon had sounded like a woman who'd been a director for twelve years and who'd seen enough to know when a situation's complexity exceeded the available resources.

But Nari heard frequencies that adults rationalized away. And scared was a frequency.

*Go back to sleep, Nari.*

*The hum is quieter,* the child ghost said. *Since the healing lady touched it. It's still there but it's not as loud. She made it quieter.*

*She did.*

*Tell her thank you.*

*I will.*

The safe house settled into its 4 AM silence β€” the building's bones creaking, the radiator clicking its irregular rhythm, the city outside pressing against the windows with the ambient noise of Seoul's insomnia. And inside Yeji's channel, the splinter held its adjusted pitch, point-three hertz below the frequency of the thing it had come from, warmed by a dead healer's hands, carrying the signal of repair inside the architecture of damage.