Eunji's analysis came back on day eighty-two.
Minho carried it folded in three, passed it across the conference table before the visit formally began, the way he'd been managing information transfer since the extension protocols had added a second security observer and the formal documentation requirement for all clinical communications. The security observer, stationed in the corridor, had a sight line to Conference Room 1's glass panel but not to the table's surface.
*Frequency data reviewed. Adaptive baseline at 0.31 THz confirmed consistent with secondary-node suppression architecture. Counterclockwise residual at 8% indicates incomplete adaptive uptake — the underlying architecture's resonance persists because the channel substrate's base-state energy is healer-class counterclockwise. The clockwise modification is layered over it, not replacing it.*
*Assessment: a counterclockwise input at 0.28-0.30 THz, timed to upper modulation peak (0.35 THz, 10-second window per 40-second cycle), would produce frequency mismatch sufficient to avoid resonance cascade. The counterclockwise input would interact with the underlying 8% residual rather than the adaptive baseline.*
*The residual may respond to matched input. Think stimulus-response at the architectural level: the healer's underlying resonance is present, suppressed but active. A counterclockwise input in the matching range, from outside the architecture, could briefly amplify the residual. Not rescue. Not repair. But signal — the architecture would register that the external input matches its suppressed natural state.*
*Risk factor I cannot model without the biweekly application schedule: the research team's intervention timing. The biweekly applications run on a fixed schedule that Im Byeongsoo's personal files would contain. I don't have that schedule. If an application is running while external counterclockwise input arrives, the combination of active external clockwise + active external counterclockwise in the architecture's substrate is the resonance condition.*
*Don't attempt if the intervention day is unknown.*
---
She read it twice. Then she passed it back.
"The application schedule," Sora said.
"Eunji can't access it." Minho's forearms on the table. Not exposed — the compression sleeves in place, the forward healing sessions suspended while the band ran clinical baseline sensitivity. Three days without application, the therapeutic window in Minho's pharmacological management narrowing incrementally toward the dose adjustment the guild physician had been recommending. "She tried through the disclosure documentation's scope — the biweekly intervention is a protocol element, not a calibration parameter. It's scheduled through clinical administration, not systems maintenance. The access scope doesn't reach it."
"How long has the program been running applications at fourteen-day intervals."
"Eleven months. The first application was three to four months after the subject's retention, per Eunji's read of the protocol documentation."
Eight months of fourteen-day cycles. Approximately seventeen applications since the adaptive response established itself. The schedule's starting point: unknown. The current phase in the cycle: unknown.
Clinical uncertainty. She'd operated under it before. She'd operated under it for forty-seven days in Thornveil Caverns, where the uncertainty was whether the next day would be survivable and the management framework was the body's own biology.
"I can determine the timing," Sora said. "Passive reception from the courtyard. If I'm in the northwest quadrant during the exercise window and the biweekly application is in progress, the biological-interaction frequencies from sublevel two will change character. The clockwise input from the intervention will be external, distinct from the adaptive baseline." She paused. "One courtyard session to observe. Two to characterize. Three to determine the phase in the cycle."
"Three sessions. Day eighty-one is used. Day eighty-three, eighty-five."
"Then attempt the signal on day eighty-seven, assuming the observations give me the schedule."
Minho looked at the table. The floor-looking gesture — the one that appeared when emotional content was present but unprocessed.
"Four more days," he said.
"Yes."
He nodded. The operational plan accepted. They moved to the clinical update, the afternoon's formal discussion topics, the items the visit log would record as legitimate guild representative business.
---
Day eighty-three. The exercise window. 0900.
The northwest quadrant. The ventilation intake at height. The 6th node at fifty-seven percent, the directional sensitivity sharper again in the two days since the previous courtyard session.
The passive reception ran through the intake, the sublevel two biological-interaction frequencies arriving with the clarity that proximity and the direct ventilation connection produced.
And the signal was different.
Not the steady managed output of the retained subject's practiced suppression. Something actively interacting — the sublevel two frequencies carrying a secondary component in the clockwise range, higher amplitude than the adaptive baseline's self-maintaining output. External. The application in progress.
The biweekly intervention. Running now. The research team's healer performing the clockwise therapeutic application, the modified mana at 0.34 THz entering the retained subject's architecture.
Day eighty-three.
The passive reception ran the characterization. The external application: amplitude significantly higher than the adaptive baseline, the research healer's output creating a sustained clockwise input at 0.34 THz that overlapped with the adaptive baseline's upper modulation range. The retained subject's architecture receiving the input. The second node's channel junctions under the clockwise interference at elevated amplitude.
The application ran for approximately eleven minutes.
At 0927, the signal returned to its standard character. The external input withdrawn. The adaptive baseline resuming its self-maintaining cycle.
Day eighty-three was an application day. The cycle phase: known. Fourteen days back from today was day sixty-nine. Fourteen days forward was day ninety-seven.
The next application: day ninety-seven.
Not day eighty-five. Not day eighty-seven.
The plan: observe on day eighty-three, eighty-five, confirm. Attempt on day eighty-seven, clear of the application cycle. Day ninety-seven was far enough away that the attempt window was clean.
---
Except.
The 6th node's passive reception had been running during the application. The characterization had included the specific frequency profile of the research healer's external output — 0.34 THz clockwise, higher amplitude than the adaptive baseline's self-maintaining signal.
And the retained subject's architecture had produced something in response that Sora hadn't expected.
The counterclockwise residual. The 8% that had persisted through seven months of adaptive suppression. During the external clockwise application at elevated amplitude, the residual had spiked.
Not to signal level. Not to a communication. But the underlying healer-class architecture, receiving a high-amplitude clockwise input that was designed to suppress it, had produced a brief counterclockwise response at approximately 14% of baseline. Double the residual's standard level.
The architecture was reacting. Not cooperating with the suppression — pushing back against the elevated clockwise input.
Sora stayed in the northwest quadrant until 0940. The monitoring band at 0.08 throughout.
She went inside and spent the afternoon working through the clinical significance of what she'd measured.
The retained subject's architecture was sensitized by the applications. The biweekly interventions were suppressing the second node's development, yes — but they were also reinforcing the clockwise suppression state while simultaneously triggering a brief counterclockwise spike in the underlying residual.
The architecture was cycling. Not deteriorating. Not adapting toward a stable suppressed state where the clockwise baseline had fully replaced the natural healer resonance. Cycling — the clockwise applications reinforcing the suppression and simultaneously triggering the residual's resistance response. The architecture oscillating between external suppression and internal resistance on a fourteen-day interval.
The research program wasn't maintaining a stable specimen. They were managing an ongoing biological conflict.
---
Day eighty-five. The exercise window. 0909.
She planned to observe. Confirm day eighty-three's application timing, establish the cycle baseline, return to the patient room and write up the characterization for Minho to carry to Eunji.
Instead.
The passive reception from the northwest quadrant ran fine for thirty seconds before the sublevel two signal changed again. Not the standard managed output. Not the elevated clockwise input of an active application.
Something sharper.
The retained subject's architecture in a state she hadn't observed in four days of passive reception. Not steady. The second node's channel junctions registering the adaptive baseline at irregular amplitude — not the cycling modulation but a disrupted, erratic output. The counterclockwise residual spiking and dropping, spiking and dropping, in a pattern that didn't correspond to any external input she could identify.
The architecture was destabilizing.
Not from external cause. Internal. The residual resistance cycle that the biweekly applications had been generating — the pendulum of external suppression and counterclockwise spike — reaching a threshold. The fourteen-day oscillation accumulating over eight months into a structural stress that the channel substrate was expressing as irregular output.
The architecture was destabilizing on its own. Without any intervention from Sora. Without anything she'd done.
She tracked it for eight minutes. The monitoring band at 0.08. Pure passive reception.
At 0940, she went inside.
---
She didn't wait for Minho's scheduled visit at 1400. She flagged the security observer: "Request urgent clinical communication with Dr. Park." Within fourteen minutes — Dr. Park arrived at the patient room door.
"I need to communicate information about a clinical situation I observed." Sora's voice at its most level. The clinical self-report mode. "During the passive reception activity that my 6th node engages autonomously, I've characterized a developing instability in the biological-interaction frequencies from the sublevel two direction."
Dr. Park went still.
"The retained subject's architecture," Sora continued. "The biweekly intervention schedule is producing a resistance-suppression oscillation. The oscillation is accumulating. Based on what I observed in the exercise window today, the oscillation has reached a threshold that's destabilizing the channel substrate at the developing node's junction sites."
The physician's assessment running behind her eyes.
"Without intervention," Sora said. "Before the next scheduled biweekly application on day ninety-seven. The accumulation is already past a stable manageable state. The junction substrate is under stress."
"I'll notify the clinical oversight team for sublevel operations." Dr. Park turned. "The clinical information you've provided will be attributed to your passive reception assessment."
The door.
"Dr. Park." Sora's voice. "The intervention to stabilize the architecture is not another clockwise application. The clockwise applications are what's generating the oscillation. Another application on day ninety-seven will accelerate the destabilization."
Dr. Park stopped. Her back to the room.
"The research program will not receive that recommendation from you," she said quietly. "But I can submit a clinical safety notice through the oversight committee. The notice will require a response." She paused. "I can't guarantee the response will be fast enough."
The door closed.
Day eighty-five. The 6th node at fifty-eight percent.
The retained subject's architecture destabilizing without Sora's involvement — eleven months of managed oscillation reaching its structural limit on its own.
She hadn't attempted a signal. She hadn't sent a pulse. She'd done nothing except observe, and the thing she'd observed was already failing.
The rescue attempt she'd been planning for day eighty-seven was no longer a question of timing.
It was a question of whether she'd reach them before the oscillation did.
