The interview room was identical to the holding room except for a second camera and a one-way mirror that took up most of the east wall. Yeji cataloged the differences automatically — the forensic psychology training mapping institutional spaces the way Jihoon mapped terrain. Two cameras meant redundant recording. The mirror meant observers. The table here wasn't bolted down but the chairs were, which told her the Bureau expected conversations in this room to produce physical reactions and had decided to anchor the seats rather than the surface.
Kim Taeyoung sat to her left. The lawyer had arrived at 8:15 AM with the same organized briefcase and a new detail: shadows under his eyes that said he hadn't slept. He'd spent the night on the jurisdictional challenge. The folder he placed on the table was thicker than yesterday's — additional filings, procedural citations, the kind of legal infrastructure that a twenty-eight-year-old public defender built when he realized the system he worked inside was being used as a weapon.
"The challenge was received at 11:47 PM," Taeyoung said. Low. For her ears only, though the room's recording equipment would catch it regardless. "Bureau Administrative Review has forty-eight hours to respond. In the meantime, the investigation proceeds under current authority. I've filed a secondary motion requesting independent verification of Dr. Seo Jinhyuk's credentials. That one has teeth — Bureau regulations require all Foundation personnel involved in hunter detention to have verified background checks on file. His file is classified beyond my clearance, which means it's either legitimate and sensitive, or—"
"Or it doesn't exist."
"Or its classification is the point. Either way, the motion forces someone to address it." Taeyoung opened the folder. Lined up his pen. "During the interview, answer direct questions about your movements and activities. Do not speculate. Do not offer analysis of guardian containment mechanics. Do not discuss the facility at Jirisan."
"What if they ask about Jirisan directly?"
"They will. Decline to answer on the grounds that the facility's existence and function are relevant to a pending jurisdictional determination. It won't hold forever, but it doesn't need to. It needs to hold for today."
The door opened. Two people entered.
The first was Bureau Internal Affairs — a man in his fifties with the build of someone who'd been a field hunter before desk work and age had redirected his career toward oversight. His name tag read CHIEF INVESTIGATOR OH SANGWOOK. His channel was mid-B-rank. Controlled. The structured output of a hunter who'd spent decades in institutional service and whose combat capability had been channeled into the kind of violence that investigations inflicted on careers instead of bodies.
The second was Captain Im Sooyeon. Tactical vest. Hair pulled back. The same careful neutrality from Chilbulsa, the expression of a woman whose job put her in rooms where she couldn't say what she was thinking and whose professionalism was both her shield and her cage.
Oh took the chair across from Yeji. Im stood by the door. Observation position — present but not participating. The tactical officer overseeing custody, not conducting the investigation. The distinction mattered. It meant Im was watching the process, not driving it. Watching for deviations.
"Interview commencing. January 24th, 9:03 AM. Present: Chief Investigator Oh Sangwook, Bureau Internal Affairs. Captain Im Sooyeon, tactical oversight. Subject Ahn Yeji, person of interest per directive 227-J. Legal counsel Kim Taeyoung."
Oh opened his own folder. Thicker than Taeyoung's. The pages inside organized with the color-coded tabs of an investigation that had been prepared well before it was filed.
"Miss Ahn. On November 3rd of last year, Bureau monitoring stations detected anomalous containment activity at the Mapo guardian site. Our records show you were present in the Mapo district on that date. Can you confirm?"
"I was in Mapo, yes."
"Can you describe the purpose of your presence near the guardian site?"
Yeji kept her hands flat on the table. Visible. The same gesture Jinhyuk had used last night, and the recognition of the parallel made something twist behind her ribs.
"I was investigating unusual frequency emissions. My ability, [Requiem], allows me to perceive resonance patterns that standard monitoring equipment doesn't register."
"Your ability." Oh made a note. The pen's movement deliberate. "You claim your ability provides you with perceptual access to containment infrastructure."
"Not a claim. A documented capability. Bureau medical assessment from my processing confirmed an anomalous resonance in my channel architecture."
"The anomaly was classified as a foreign fragment echo. Embedded in your channel. The same frequency signature detected at every containment site experiencing increased activity." Oh produced a sheet from the folder. A map. The Korean peninsula, overlaid with color-coded markers — blue for containment sites, red for dates of increased activity, and a yellow line tracing a path through Seoul, Gangwon, Chungcheong, and Jirisan. The yellow line was Yeji's movement history.
The correlation was surgical.
Every site she'd visited had experienced a spike in containment activity. Every spike aligned with her documented presence within the site's proximity. The timeline was clean. The data was accurate. And the conclusion it supported — that Yeji's presence caused the containment instability — was wrong in a way that only someone who understood the keeper architecture could recognize.
She'd been responding to the activity, not causing it. But the data said the opposite, and data didn't care about causation.
"Miss Ahn, can you explain why your movements correlate with containment destabilization at every site you've visited?"
"I was tracking the destabilization. The correlation exists because I was investigating the same—"
"Objection." Taeyoung's voice cut in. Precise. The legal training converting instinct into procedure. "Chief Investigator, the question presupposes causation. My client's movements correlating with containment activity is observational data. Implying that her presence caused the activity requires independent evidence establishing a causal mechanism."
Oh's pen stopped. The investigator looked at Taeyoung the way experienced hunters looked at terrain obstacles — calculating whether to go through or around.
"Noted. Miss Ahn, during your presence at the Gangwon containment site on January 8th, the guardian's defensive system activated and embedded a fragment echo in your channel. Bureau records confirm the fragment echo. Can you describe the circumstances?"
"The guardian's containment was already degraded when I arrived. The activation was a defensive response to my proximity — the guardian system identified me as either a threat or a maintenance operator and responded accordingly."
"A maintenance operator." Oh repeated it without inflection. The investigator's technique — echoing the subject's words to let them hear how the words sounded in an institutional context. "You're claiming the guardian system treated you as an authorized operator."
"The guardian system is designed to respond to specific channel architectures. Mine matches the architecture of the historical keepers who maintained the containment infrastructure."
"Historical keepers." He wrote. "A historical claim that—"
"That only my client can verify through her ability, yes." Taeyoung again. Stepping on the beat before Oh could frame it as a credibility issue. "Chief Investigator, my client's unique perceptual capability means that certain evidence is, by nature, only accessible through her. This is consistent with other awakened ability cases where evidence derived from ability-specific perception has been admitted under Bureau Regulation 14-B, section 3."
Oh's jaw tightened. Not at Taeyoung's citation — at the accuracy of it. The lawyer had done his homework. The regulation existed. The precedent existed. The procedural ground Oh was standing on had a crack in it, and the twenty-eight-year-old public defender had found it.
*40.9%,* Eunsoo reported. Inside the bond. The clinical voice running the parallel assessment that never stopped — monitoring Yeji's channel, the splinter's degradation, the fragment's activity beneath the building. *The calibration alignment has degraded an additional 0.7% since you woke. The dampening field's cumulative effect is accelerating. At the current rate, the calibration collapses in eleven hours.*
Eleven hours. Down from fourteen. The clock shrinking while the interview expanded, the two timelines running in opposite directions.
Oh produced another document. "Miss Ahn, this is a signal analysis report from Bureau Technical Services. It documents a sustained frequency emission from your channel — specifically, from the fragment echo — that matches the maintenance frequency detected at all active containment sites. The emission has been continuous since your arrival at this facility. Can you explain why your channel is broadcasting the same frequency that's linked to containment instability?"
The splinter. Broadcasting through Yuna's redirected dampening. The maintenance frequency that Yeji had chosen to let transmit in order to preserve the waystation's calibration — the decision she'd made last night, protecting the alignment at the cost of detectability.
The Bureau's own equipment had picked it up. The emission she'd authorized was now evidence in the investigation against her.
"The frequency is a component of the fragment echo. The emission is passive — a result of the fragment's resonance within my channel, not an active broadcast."
Half true. The emission existed because of the fragment echo. The decision to let it broadcast rather than suppress it was active. But the distinction lived in the space between physics and intent, and intent required proof that Oh didn't have.
"Passive." Oh wrote. The skepticism in his pen strokes. "Miss Ahn, Bureau Technical Services also reports that the emission's strength increased by approximately thirty percent at 11:42 PM last night. Can you account for that change?"
11:42 PM. The exact time Yuna had shifted her dampening from broadcast suppression to calibration preservation. The exact time Yeji had made the choice. The Bureau's monitoring equipment had timestamped it.
"Channel fluctuations during sleep periods are documented in Bureau medical literature." Yeji's voice stayed flat. "The emission is affected by my physical state. Reduced consciousness can alter the passive output characteristics."
"You were asleep at 11:42 PM?"
"I was in my holding room."
Not a lie. Not the truth. The space between, where institutional survival lived.
Oh studied her. The experienced investigator reading the subject — not the words, but the delivery, the timing, the fraction-of-a-second pauses that human beings produced when they were managing information rather than freely sharing it. He knew she was holding back. The knowing didn't matter without the specifics.
"Let's discuss the facility at Jirisan."
"I decline to answer questions regarding the Jirisan site on the grounds that its existence and function are relevant to a pending jurisdictional determination." Taeyoung's prepared language, delivered by Yeji in the flat tone that made prepared language sound like personal conviction.
"Miss Ahn, the facility—"
"Counselor has advised against discussion of the Jirisan site until jurisdictional authority is resolved." Taeyoung closed his pen. The gesture communicating: this line of questioning is done.
Oh's jaw worked. The investigator's frustration channeled through the muscle rather than the voice — the institutional discipline of a man who knew how to conduct interviews within procedural boundaries even when the boundaries protected the subject.
"We'll take a ten-minute break."
---
The break. The hallway outside the interview room, where the fluorescent lighting was the same institutional neutral as everywhere else in sub-level one and the air carried the staleness of a space that recycled its atmosphere through filters designed for security rather than comfort.
Yeji stood near the wall. Taeyoung beside her. Two Bureau escorts behind them — not the A-rank tactical hunters from Chilbulsa but standard B-rank security personnel whose body language communicated boredom rather than alertness. Routine duty. Watching a detained hunter stand in a hallway during a break.
Captain Im approached. Her stride unhurried. The body language of a colleague passing through a corridor, not an officer seeking a conversation. But her path curved. A degree. Two. The arc that brought her within speaking distance of Yeji while appearing to head toward the administrative wing.
"Miss Ahn." Official. Audible to the escorts. "Your medical review is scheduled for 2 PM. The technician from processing flagged the anomaly in your channel. Standard follow-up."
"I understand."
Im paused. The pause looked like she was checking her tablet — the device in her left hand, screen angled away from the escorts. But her voice dropped to a register that the hallway's ambient noise covered.
"Directive 227-J was filed at 4:17 AM on January 23rd. Bureau Intelligence received it at 4:19 AM. The authorization signature is Assistant Director level. Response teams were deployed by 5:30 AM." She looked up from the tablet. The eyes carrying the thing that procedure-focused people carried when procedure itself became the evidence of wrongdoing. "A directive of this complexity — evidence compilation, legal framework, operational deployment parameters — takes a minimum of seventy-two hours to prepare through standard Bureau channels. This one was filed, approved, and operationalized in under ninety minutes."
The implication hung in the corridor's filtered air. A directive that should have taken three days had appeared in ninety minutes. Either someone at Bureau Intelligence had been working on it for days before filing — which meant the investigation predated its own authorization — or the directive had been prepared externally and injected into the Bureau's system fully formed.
"Captain, I—"
"I'm noting the timeline irregularity in my custody report." Im's voice returned to its official register. The volume that the escorts could hear. "The report will be filed with Bureau Administrative Review as part of standard custody oversight documentation."
She continued past. The stride resuming its official pace. The captain walking the corridor of a building she'd served for fifteen years, filing reports through channels she'd trusted for fifteen years, doing the thing that procedural people did when the procedure was compromised: using the procedure itself to document the compromise.
Taeyoung watched her go. The lawyer's eyes tracking the tactical officer's back with the expression of someone recognizing an ally where allies were rare.
"She's giving us ammunition," he said. Quiet.
"She's doing her job." Yeji watched Im round the corner. Disappear. "The ammunition is a side effect."
---
Corridor D. Interview room 3. Park Jihoon sat in a chair that was bolted to the floor in a room that was identical to Yeji's except for the orientation of the one-way mirror.
The B-rank swordsman had been processed the same as his party leader — mana dampeners on the wrists, channel output suppressed to five percent, his sword confiscated and tagged and stored in the evidence locker three floors above. Without the weapon, he was a forty-one-year-old man in a jacket he'd worn since Jirisan, with a compression sleeve on his left arm that covered a chronic injury and a posture that carried fifteen years of military and combat service in the line of his spine.
The IA officer assigned to him — not Oh, a younger investigator named Deputy Chief Han Minji — had spent forty minutes asking questions that Jihoon answered with the economy of a soldier giving a debrief to brass he didn't respect.
"Your party's designation."
"Registered four-person clearance team, license 2019-4471-B."
"Your relationship to Ahn Yeji."
"Party leader. She's a member of my registered party."
"The nature of your activities over the past eight weeks."
"Dungeon clearance. Ability training. Field operations consistent with party licensure."
"Your presence at the Jirisan facility."
"Decline to discuss. Counsel advised."
Deputy Chief Han's frustration was less controlled than Oh's. Younger. Less practiced at the institutional patience that career investigators developed. She pressed. Jihoon gave nothing. The swordsman's military training had equipped him for interrogation resistance the way dungeon training had equipped him for combat — structurally, not emotionally. He didn't resist because he was angry or defiant. He resisted because the questions had answers that weren't his to give.
During the break — the same ten minutes, synchronized across interviews — Jihoon stood in his own corridor with his own escorts. Two tactical hunters. Standard Bureau kit, body armor, dampening sidearms.
The one on his left was wrong.
Jihoon didn't identify it immediately. The wrongness registered first as discomfort — the instinct of a man who'd fought alongside and against hundreds of hunters and who cataloged channel signatures the way other people cataloged faces. The tactical hunter on his left had a Bureau channel profile. Standard A-rank output. Regulation dampening signature consistent with Bureau-issue equipment. Everything matched.
Except for a harmonic.
Buried deep in the hunter's channel architecture. Below the operational frequencies. Below the combat output. Below the institutional training that Bureau hunters received. A sub-harmonic — a resonance that vibrated at a frequency Jihoon had only felt once before. In the waystation beneath Chilbulsa. The maintenance frequency that the carved walls had produced. The frequency that Yeji's [Requiem] had identified as the keepers' operational wavelength.
The tactical hunter standing two meters from Jihoon carried a trace of the keeper frequency in his channel.
Not like Yeji's. Not a full resonance. More like what Seo Jinhyuk had described — a secondary harmonic. An adaptation from prolonged exposure. This hunter had spent time near fragment-related infrastructure. Significant time. Enough for his channel to develop a sympathetic response.
Bureau hunters didn't work fragment containment sites. That was Foundation jurisdiction. A Bureau tactical hunter with a fragment harmonic had been exposed to fragment energy through a channel outside Bureau operations.
Jihoon looked at the hunter. The visor was darkened. The face invisible. The body language was standard — escort duty posture, alert but routine. Nothing in the behavior flagged. Only the channel.
The swordsman's hands hung loose at his sides. The dampeners on his wrists buzzed. His sword was in an evidence locker and his combat ability was suppressed to five percent and the man standing next to him might be exactly what he appeared to be — a Bureau hunter who'd been assigned to a Foundation operation at some point and picked up a residual harmonic.
Or the man might be something else. An operative placed inside Bureau infrastructure by the same organization that Seo Jinhyuk served. The Harvest's descendants, embedded in institutions, wearing institutional faces, carrying fragment energy in channels that Bureau medical assessments wouldn't flag because Bureau medical assessments weren't calibrated to detect fragment harmonics.
Jihoon filed it. Said nothing. The party leader's discipline — information was ammunition, and ammunition was stored until the weapon was ready.
---
The afternoon session started at 1:30 PM.
Same room. Same seats. Oh Sangwook's folder had grown — new pages added during the break, new evidence compiled, new questions prepared. Taeyoung's folder had also grown. The lawyer had spent the break period making calls from the secure legal consultation booth, and the shadows under his eyes had darkened from fatigue to something more productive.
"Miss Ahn." Oh's voice carried the afternoon's different quality — the investigator had recalibrated during the break, adjusting his approach from broad questioning to targeted extraction. "I'd like to discuss your channel's development over the past eight weeks. Bureau medical records from your initial registration show a standard C-rank channel architecture. Your processing assessment yesterday showed significant structural anomalies. Can you describe what changed?"
"My ability evolved through use. Normal awakened progression."
"Normal awakened progression doesn't typically produce foreign resonance embedded in the channel. The processing technician described your channel as containing elements she couldn't classify. Would you agree?"
"I would agree that my channel architecture is unusual."
"Unusual in a way that specifically corresponds to the containment infrastructure at guardian sites."
"My ability, [Requiem], interacts with resonance-based systems. Guardian containment is a resonance-based system. The correspondence is functional, not causal."
Oh leaned forward. The investigator's body shifting from interview mode to confrontation mode — not aggressive, but close. The proximity that investigators used when they wanted the subject to feel the institutional machinery they represented.
"Miss Ahn, the evidence establishes a pattern. Your presence correlates with containment destabilization. Your channel contains fragment material. Your ability interacts with the containment infrastructure in ways that no other awakened individual has demonstrated. The Foundation's analysis concludes that you represent a—"
"The Foundation's analysis." Taeyoung again. Sharp. "Chief Investigator, which Foundation division produced this analysis?"
Oh paused. Checked his notes. The pause was too long — the information should have been immediate for a lead investigator working his own case. He was checking because someone else had provided the analysis and he was reading their label.
"The Foundation's Special Projects division."
"Special Projects. An eight-month-old division with a classified charter, classified personnel records, and no verified background checks on file with the Bureau." Taeyoung placed a document on the table. His secondary motion. "Chief Investigator, I've filed a formal request for independent verification of all Foundation-sourced evidence in this investigation. Until that verification is completed, I'm advising my client to decline questions based on Foundation analysis."
Oh's jaw worked. The muscle visible. The investigator caught between his own procedural instincts and the operational framework that the directive had established — a framework that relied on Foundation evidence, Foundation analysis, Foundation conclusions. If the Foundation's credibility was challenged, the investigation's foundation cracked.
The door opened. Captain Im entered. Not scheduled — the interview wasn't supposed to have interruptions. Her face carried an expression that Yeji read as controlled urgency. The kind of urgency that institutional people expressed through procedure rather than emotion.
"Chief Investigator. A word."
Oh stood. The two officers stepped into the hallway. The door closed. Through the wall, muffled: voices. Im's voice measured, steady. Oh's voice rising, then catching itself, then dropping.
Taeyoung leaned toward Yeji. "Something's happening."
"I know."
*40.4%,* Eunsoo reported. *Eleven hours compressed to eight. The degradation rate is increasing. The fragment's proximity effect is compounding with the dampening field. Your channel is being pulled from two directions. The calibration alignment is at — I need to be precise — thirty-one percent of the waystation's intended tuning. When it falls below twenty percent, the conversion becomes irreversible. The splinter reverts to fully hostile frequency and the capacity damage becomes permanent.*
Eight hours. Thirty-one percent alignment. Twenty percent as the point of no return.
Oh returned. His expression had changed — the investigative focus replaced by something harder. Institutional. The face of a man who'd received information that altered the operational picture and was adjusting in real time.
"This interview is suspended until 9 AM tomorrow. Counsel, your client will be returned to her holding room. Medical review is rescheduled to tomorrow morning."
"On what grounds—"
"Administrative. The investigation team requires additional time to process new evidence." Oh gathered his folder. His movements were faster than before. Less precise. The institutional control fraying at the edges of an investigator who'd just learned something that his procedures hadn't anticipated.
Captain Im stood by the door. Her expression carefully blank. But Yeji read it — the psychology training dissecting the micro-expressions that fifteen years of Bureau service hadn't quite erased. Im had given Oh information. The information had rattled him. And the rattling had nothing to do with Yeji's jurisdictional challenge or Taeyoung's evidentiary motion.
They walked the corridor back to holding. Yeji's escorts flanking. Taeyoung beside her. Im behind, her tactical boots marking time on the concrete floor.
At the junction where the corridor split toward the holding rooms, the building moved.
Not shook. Not rumbled. Moved. A displacement. The kind of subtle, structural adjustment that seismic engineers would classify as micro-tremor and that anyone standing in the corridor would attribute to heavy traffic on the road above or construction equipment operating nearby. The fluorescent lights flickered — a fraction of a second, barely registering to normal perception.
Normal perception.
Yeji's perception wasn't normal.
The splinter detonated with information. Not pain — data. The fragment echo in her channel receiving a transmission from beneath the building, the partially calibrated resonance acting as a receiver for the signal that the fragment had just broadcast. And the signal was not the reaching, the loneliness, the recognition that she'd felt last night.
It was distress.
Something had touched the fragment. From outside. Not from above — not from the building's dampening field, not from the Bureau's infrastructure. From the side. A horizontal intrusion. A signal traveling through the bedrock from a source kilometers away, reaching the fragment's boundary, probing. Testing. The mana equivalent of someone knocking on a wall to find the stud.
The pipeline. Jinhyuk's pipeline. The buried conduit running from Bureau Central to Building 7 in Incheon. Forty kilometers of mana-rated infrastructure laid through Seoul's utility corridors under classified construction permits. The extraction system.
Someone had just turned it on.
Not full activation. A diagnostic. A test pulse. The equipment at Building 7 sending a probe signal through the pipeline to verify the connection — to confirm that the conduit reached the fragment, that the fragment was where the data said it was, that the extraction could proceed on schedule.
The fragment had felt the probe the way a sleeping person felt a hand on their shoulder. And its response was the response of something that had been alone in the dark for millennia and had just been touched by something that intended to take from it.
The lights steadied. The corridor returned to its institutional stillness. The escorts walked. Taeyoung walked. Im walked. Nobody mentioned the tremor. In a building full of dampened hunters and institutional concrete, a micro-tremor was background noise.
But through the splinter, through the maintenance frequency that connected Yeji to the fragment the way a telephone line connected two people who couldn't see each other, the oldest thing beneath Korea was shaking.
And Yeji had eight hours before the only tool that could help it was destroyed by the building designed to keep her safe.
