Mira's reader screamed.
Not literally — the device didn't have a speaker. But the display, angled toward her face in the checkpoint corridor's fluorescent lighting, produced a frequency graph whose amplitude exceeded the screen's vertical axis, the waveform clipping at the display's upper boundary in a flat-topped distortion that meant the signal was too strong for the instrument to render. She tilted the reader away from Shin, toward the corridor wall, and the waveform dropped to normal. She tilted it back, toward the disc in Shin's right hand, and the clipping returned.
"Two signals." Her voice was the clinical register at full compression — information delivered at the minimum volume that intelligibility required. "Thursday the disc produced one frequency matched to your cardiac rhythm. Today it's producing two. The second signal is lower frequency, higher amplitude. The reader can't resolve the second signal's full waveform because the amplitude exceeds my instrument's range."
She adjusted the reader's gain. The waveform shrank on screen — the first signal resolving into the familiar cardiac pattern, sixty-four beats per minute, Shin's heart in amber light. The second signal appeared beneath it: a slower oscillation, thirty beats per minute, the waveform's shape different from the cardiac pattern. Not the sharp peak-and-valley of a heartbeat. Rounded. Sinusoidal. The shape of a signal designed for sustained transmission rather than pulsed output.
"When did this start."
"Overnight. Between Thursday and this morning."
"You didn't mention it."
"Telling you on the phone versus showing you the reader data. The reader data is the conversation."
Mira studied the display. The two signals occupied different frequency bands — the cardiac rhythm in the range that her reader was calibrated for, the sub-floor signal in a band that the reader's design hadn't anticipated. The reader was a medical instrument. It was built to measure human bioelectric output. The second signal wasn't human. The second signal was the network, and the network's frequency occupied a band that medical instruments hadn't needed to measure because medical instruments measured patients and the network wasn't a patient.
"The disc is converting," she said. Not a question. The diagnosis delivered as fact. "The sub-floor signal during Thursday's run initiated a structural change in the crystal. The change is producing a second output channel. The disc is becoming a dual-band transmitter — your cardiac frequency on one channel, the network's frequency on the other."
"The network's channel is getting stronger."
"I can see that." She turned the reader off. Put it in the briefcase. Adjusted the briefcase strap on her shoulder. The adjustment was the gestural tell — the hands that moved to equipment when the mind processed a finding that exceeded comfortable parameters. "We proceed. The disc's conversion doesn't change today's objective. Sub-floor mapping. Full reconnaissance. We stay in the transition zone long enough to get the readings I need and then we leave. Understood?"
"Understood."
The checkpoint attendant processed them. The incident form from the drawer. The permit stamped. The steel door opened.
---
The approach zone was wrong.
Not wrong in the way that Thursday had been different from Tuesday — the corridor formation, the wall-mounted clustering, the behavioral adaptation that the network's frequency had produced through the spiders' overwritten programming. Thursday's changes had been organizational. Saturday's changes were categorical.
The C-minus spiders were on the floor.
Not walking. Not repositioning. Flat against the limestone, their bodies pressed to the stone's surface, their legs extended laterally in the posture that Shin had never seen in any spider, in any dungeon, in any encounter across the months of Ashburn runs that his experience encompassed. The posture was prostration. The word arrived in his mind without clinical distance — without the analytical framework that Mira would apply and the behavioral terminology that she would use. The word was religious. The spiders were prostrate the way supplicants were prostrate. Belly to the ground. Legs spread. Heads oriented toward the center of the approach zone's corridor, toward the path that Shin walked, toward the carrier whose heartbeat the disc broadcast through the stone.
"Don't step on them." Mira's whisper. The field researcher's voice, the register that preserved the observation without disturbing the observed. "Walk between them. Don't make contact."
He walked. The prostrate spiders lined the corridor like tiles — dozens of them, their crystal bodies fitted to the floor's contours, the carapaces' violet coloration matching the violet crystal that the cave walls now displayed. The approach zone's conversion was complete. Every surface — walls, floor, ceiling — wore the network's color. The spiders wore it too. They weren't occupants of the space anymore. They were part of it. Extensions. Components. The dungeon's ecology absorbed into the network's architecture as structural elements rather than biological entities.
The disc pulsed. Dual rhythm. The cardiac frequency at sixty-four, the sub-floor frequency at thirty. The prostrate spiders' bodies responded to the sub-floor frequency — a visible micro-contraction at each pulse, the bodies tightening against the floor in synchronization with the network's thirty-beat rhythm, the organisms contracting the way cardiac muscle contracted: involuntarily, structurally, in response to an electrical signal that bypassed volition.
Mira's stylus moved on the tablet. The notes accumulating. But her hand was faster than Thursday's — the annotations shorter, the observations compressed, the field researcher's methodology adjusting for a volume of data that exceeded the methodology's designed throughput.
The deep zone.
The converted C-ranks were agitated. The display postures that Thursday had presented — chelicerae open, blue-green glow, oriented toward Shin — were the same, but the execution was different. The spiders' bodies vibrated. A fine tremor in the legs, the thorax, the mandibles — the vibration of organisms receiving a signal too strong for their biology to process smoothly. The sub-floor concentration beneath them was stronger. Closer to the surface. The concentric rings that Mira had modeled at four meters depth on Thursday had continued their sixteen-millimeter-per-hour ascent, and two days of ascent meant approximately 770 millimeters of progress, the outermost ring now at 1.33 meters below the cave floor instead of 2.1 meters.
The spiders were closer to the source. The signal was louder. Their bodies shook with it.
"Agitation." Mira noted. "The vibration frequency matches the sub-floor signal. They're resonating. The network's output is exceeding their crystal's dampening capacity."
Shin didn't engage the deep zone spiders. The objective was reconnaissance, not grinding. He moved through the deep zone toward the transition boundary, and the C-ranks tracked him with heads that shook and bodies that trembled and chelicerae that opened and closed in the rapid pattern of organisms caught between two commands — the display posture that the network's frequency demanded and the combat response that the proximity of a non-network entity triggered.
The transition zone.
The boundary had moved again. Twenty-two meters past the Bureau marker. Four meters of advance in two days. The acceleration continuing — two meters per day becoming three becoming four, the rate climbing the same exponential curve that everything in this dungeon climbed.
"Readings," Mira said. She knelt. The reader pressed to the floor. The display populated with sub-floor data — frequency, density, depth, the dimensional map of the concentric ring structure that her modeling had predicted and the reader now confirmed. She took readings at three-meter intervals, moving laterally across the transition zone's width, building the data set that her projections required.
Shin stood guard. The disc pulsed. The converted spiders in the transition zone held their display postures — chelicerae open, glow emanating, the signal broadcast that his cardiac-managed breathing kept below the arrhythmia threshold. Seventy-two beats per minute. Below eighty-five. The protocol held.
"Outermost ring confirmed at one point three meters below floor," Mira said, kneeling at the fourth reading point. "Inner rings have compressed — the spacing between rings has decreased from eight point three centimeters to six point one. The structure is tightening. Consolidating. The center point's density—" she paused, read the number, read it again "—is one hundred and twelve times ambient."
A hundred and twelve. Thursday's estimate had been over one hundred. The density was still climbing. The center was still concentrating.
"Five days to breach?"
"Four now. The acceleration. Wednesday or Thursday."
Wednesday. Five days. The timeline that controlled everything — the leveling trajectory, the Bureau's review period, the dungeon's conversion, the sub-floor structure's breach — converging on a window in the middle of next week.
"I need two more reading positions," Mira said. "East side of the transition zone. Ten minutes."
"Go."
She moved laterally. Shin remained at the fourth position, standing between the prostrate floor spiders and the display-posture ceiling spiders, the disc's dual rhythm broadcasting into a cave that was becoming less cave and more antenna with each pulse.
A converted spider hung from the ceiling three meters to his right. Fully converted — the carapace uniform violet, the chelicerae extended, the blue-green glow emanating. Standard target. The five-second delay window. The breathing protocol.
He engaged. Approach from five meters, breathing maintained, heart rate at seventy-two. The spider's display posture held. He closed to three meters. The disc's cardiac signal surged — seventy-five. Two meters. Seventy-eight. One meter. The knife drawn. Eighty.
Coxal strike. The blade entered the joint seam of the anterior right leg. Twist. The leg separated. The spider dropped from the ceiling — the involuntary collapse, the combat activation delayed by the five-second window. He severed the second coxal joint while the spider's legs scrabbled on the cave floor. The ventral approach — blade under the thorax, targeting the soft tissue between the ventral plates where the crystal was thinnest and the organs beneath were accessible.
The blade hit crystal.
Not the thin crystal of standard ventral plating. Dense crystal. Solid. The blade's tip struck the ventral surface and skidded — the eight-percent enchantment's cutting edge meeting a resistance it hadn't encountered in any previous engagement. The crystal was too thick. The conversion had added density to the ventral plating the way it had added density to the dorsal carapace, and the soft-tissue vulnerability that the kill protocol depended on was no longer soft.
He stabbed harder. The blade's tip found a seam — not the wide gap between ventral plates that standard spiders displayed, but a hairline crack in the converted crystal, the remnant of a vulnerability that the conversion was closing but hadn't yet sealed. The blade entered two centimeters. Not enough. Not the full penetration that the ventral finish required to reach the organs beneath. Two centimeters of crystal-impeded blade in a target that needed six centimeters of clean insertion to die.
He withdrew. Repositioned. Struck again at a different seam. The blade entered three centimeters. Better. The spider's legs were slowing — the combat activation winding down as the nervous system processed the structural damage from the two severed legs and the partial ventral penetration. The spider was dying. Slowly. The dying was taking longer than the five-second window.
*Shadow Experience: +52*
The notification arrived. The spider was dead. The System confirmed it. Shin withdrew the blade. Stood. Turned toward the next target — a converted spider four meters to his left, display posture engaged, the standard target selection that the protocol dictated.
He took one step.
The dead spider's mandible entered his lower back.
Not a bite. A stab. The mandible's tip — the pointed terminus of the jaw appendage that the chelicerae operated — drove through the mana-threaded jacket's weave at the lumbar region. The threading should have stopped it. The eight-percent enchantment's defensive rating was designed to deflect C-rank physical attacks at the jacket's rated coverage area. But the lumbar region was the jacket's weakest zone — the fabric stretched across the lower back's curvature, the threading's density reduced by the material's deformation, the enchantment's protection thinned by the geometry of a body that bent at the waist.
The mandible went through the threading. Through the cotton T-shirt beneath. Into the erector spinae — the muscle group that ran parallel to the spine, the postural architecture that held the torso vertical. The penetration was four centimeters. Deep enough to pass through skin and subcutaneous fat and the muscle's outer fascial layer and into the muscle tissue itself, where the mandible's tip found the capillary bed and the nerve fibers and the specific internal geography of a body part that existed to support the spine and was now occupied by an appendage made of violet crystal attached to a spider that the System said was dead.
Shin didn't scream. His body locked. Every muscle from the hips to the shoulders contracted simultaneously — the involuntary spasm of a nervous system processing a deep tissue insult, the body's emergency response overriding voluntary movement in favor of the protective stillness that trauma demanded. His legs went rigid. His arms went rigid. The knife in his right hand was clenched in a grip that the locked fingers couldn't release.
The mandible twisted. Inside him. The spider's jaw mechanism performing the rotation that the chelicerae were designed to execute — the motion that separated chitin from bone in the spider's natural prey, applied to the muscle fiber of a human's lower back. The rotation was mechanical. The spider was dead. The System had confirmed it. But the spider's body was still executing its last motor command — the mandible twist, the kill sequence's final step, the automated response of a neural architecture that had fired its last signal before the System processed the death and the signal was still traveling through the dead creature's nerves and the nerves were still contracting the mandible's musculature and the musculature was still rotating the tip through Shin's erector spinae.
The paralytic hit.
Standard Ashburn spider paralytic — the chemical compound that the mandibles' venom glands deposited into prey tissue upon penetration. Not the variant's network-chemistry modification. Not the fascia-rebuilding venom that had created the shoulder's integration. Standard paralytic. C-rank toxin. Designed to immobilize prey for the six-to-eight-second window that the spider's feeding process required.
Shin's left leg went dead. The numbness started at the hip — the paralytic traveling the nerve pathways that the lumbar insertion provided access to, the chemical finding the sciatic nerve's root and blocking it. The hip went numb. The thigh followed. Knee. Calf. The entire left lower extremity going offline in a descending wave that took four seconds to travel from the insertion point to the toes.
He fell. Left side. The locked muscles released as the paralytic overrode the spasm — the body's emergency stillness replaced by the toxin's enforced stillness, the involuntary replaced by the chemical. He hit the cave floor on his left shoulder. The modified shoulder. The impact drove the modified deltoid into the violet crystal of the transition zone's floor, and the contact produced a jolt — the network's frequency in the floor meeting the network's frequency in his tissue, the two signals resonating through the impact's violence.
The spider was on his back. Three legs still working — the four intact legs that the coxal strikes hadn't removed, functioning despite the System's death confirmation, the body's motor architecture continuing to execute commands through the dead-but-not-finished nervous system. The mandible was still embedded. The rotation had stopped — the motor command's execution complete — but the mandible remained in the tissue, the four-centimeter penetration anchoring the spider's weight to Shin's lumbar region. Eight kilograms of dead crystal spider attached to his back by a jaw embedded in his muscle.
His left side was numb. His right side was locked. The knife was in his right fist but his arm was beneath him, pinned by the fall's geometry, the locked grip useless against the cave floor that his body weight compressed it into.
"Shin!"
Mira. The voice was not the clinical register. The voice was the register beneath — the one that the clinical architecture concealed, the one that the professional training suppressed, the voice of a person rather than a practitioner. The voice covered ten meters in a second. The footsteps covered them in three.
She grabbed the spider. Both hands. The crystal carapace's edges cut her palms — the violet material sharper than the standard maroon, the conversion having refined the crystal's structure to a hardness that Kuri's thumbnail had detected and that Mira's skin now confirmed. She pulled. The spider resisted. The mandible's anchor held — the jaw embedded in tissue, the crystal's grip on muscle fiber stronger than the hands' grip on crystal.
She braced her foot against Shin's hip. The right hip — the side that still had sensation, the placement adding leverage to the pull without compressing the left side's paralyzed tissue. She pulled again. Harder. The mandible resisted. Then it didn't. The crystal tip exited the muscle with a sound — wet, specific, the particular noise of a solid object withdrawing from a body cavity that had been created by the object's entry.
The spider came free. Mira threw it. Not placed, not set down — threw, the gesture of a person whose clinical training had not prepared her for the experience of pulling an arachnid's jaw from her patient's back and whose hands did what unprepped hands did with objects they didn't want to hold. The spider hit the cave wall. The impact cracked the dead crystal's thorax. Two legs broke at the coxal joints.
Mira dropped to her knees beside him. The clinical register returned — not smoothly, not the seamless transition of a professional resuming command, but the jagged reassertion of training over instinct, the healer's discipline reclaiming the response from the person's reaction through force rather than habit.
"Don't move." Her hands found the wound. The right hand pressing the lumbar entry point — the pressure stopping the bleeding through direct compression, the oldest technique in medicine, the first intervention. Her left hand was on his hip. Healing mana flowing. The B-rank energy targeting the paralytic first — the toxin's chemical structure familiar to her training, the standard C-rank paralytic that every dungeon healer's pharmacological education covered. The mana identified the compound. Surrounded it. Neutralized it through the biochemical intervention that B-rank healing performed at the molecular level.
The numbness retreated. Slowly. Toes first — the sensation returning in the reverse order of its departure, the sciatic nerve's function restoring from distal to proximal as the healing mana cleared the paralytic from the nerve pathway. Calf. Knee. Thigh. Hip. Each segment's return marked by the specific pins-and-needles of reinnervation, the neural static that accompanied the transition from blocked to functional.
"Paralytic neutralized." Mira's voice was precise but the precision was constructed rather than natural — each word placed with the deliberation of a mason laying brick, the clinical register assembled syllable by syllable from the rubble that the spider's attack had made of her composure. "The wound is deep. The mandible penetrated the erector spinae group — left side, approximately L3 vertebral level. Muscle fiber is torn. The fascial layer is punctured. There's no spinal involvement — the penetration angle was lateral, not medial. You're bleeding. I'm going to heal the vascular damage first and the muscle tissue second. Stay still."
He stayed still. The cave floor was cold against his left cheek. The violet crystal conducted the sub-floor frequency through his modified shoulder and the frequency buzzed in the tissue like a second heartbeat, the network's signal present even in the specific vulnerability of lying on a dungeon floor with a hole in his back and a healer's hands keeping the hole from becoming permanent.
Mira's mana worked. The vascular repair — the small arteries and arterioles that the mandible's passage had severed, the bleeding points that the direct pressure was controlling mechanically and that the healing mana would control biologically. Each severed vessel's ends found each other through the mana's guidance, the cellular repair mechanisms accelerated from days to minutes by the B-rank energy's intervention.
The bleeding stopped. Mira's right hand lifted from the compression point. Blood on her fingers. Not much — the lumbar region's vascularity was moderate compared to a limb wound's, the bleeding controlled quickly. But the blood was visible. Red on her palm. Red on the cave floor. Red on the jacket's mana threading, the fabric's enchantment discolored by the fluid it hadn't been designed to contain.
She turned to the muscle damage. Her hands repositioned — both on the lumbar wound, the palms flat against the entry point, the healing mana's full output directed at the erector spinae's torn fibers. The repair was slower than the vascular work. Muscle tissue was structurally complex — the fibers organized in bundles, the bundles organized in fascicles, the fascicles organized in the muscle's gross architecture. The mandible had torn through multiple fascicles. The mana could repair the tears, but the repair was a patch, not a restoration. The healed tissue would be scar — collagen replacing the muscle fiber that the crystal had destroyed, the scar functional but weaker, the healed area a permanent compromise in the muscle's structural integrity.
"The repair will hold," Mira said. The clinical register stabilizing, the bricks settling, the composure's reconstruction nearing completion. "But the scar tissue will be twenty to thirty percent weaker than the original muscle fiber. Your left-side lumbar flexion and extension will be reduced. Rotation will be compromised. The reduction is permanent at current healing levels — a higher-rank healer or repeated B-rank sessions could improve the scarring, but the improvement would take weeks."
Weeks. The timeline again. Weeks for the scar tissue to remodel. Weeks that the Bureau's review period was consuming. Weeks that the sub-floor structure's breach would abbreviate. Weeks that the leveling trajectory couldn't afford because the leveling trajectory was measured in runs and runs were measured in kills and kills were measured in the physical capacity that the scar tissue was reducing.
"Can I stand."
"In two minutes. I'm finishing the fascial repair."
He lay on the cave floor for two minutes. The transition zone's converted spiders held their display postures above him. The disc pulsed in his pocket — dual rhythm, cardiac and sub-floor, the two signals broadcasting his presence and the network's frequency into a dungeon that had just taught him the difference between the System saying something was dead and something being dead.
"Now."
He stood. Slowly. The left side of his lower back registered the scar tissue's presence as a pulling sensation — the healed fascia shorter than the original, the contraction producing resistance at the end of the range of motion that full extension required. He could stand. He could walk. He could not bend at the waist without the pulling sensation converting to a sharp objection from the repaired tissue.
"We're done." Mira collected the reader from the position where she'd been taking measurements when the spider attacked. She collected the knife from the cave floor — the blade that Shin had dropped during the fall, the weapon that lay in the blood that the cave floor held. She wiped the blade on her pants. Put it in her briefcase. The action was the action of a person who had just used that knife to kill a spider that was trying to kill her patient, and the briefcase that held medical instruments now held the instrument of the killing, and the distinction between the two functions was the distinction between the healer she'd been on Thursday and the healer she was now.
Her hands trembled. The tremor was fine — two millimeters of oscillation at the fingertips, the involuntary motor response of a nervous system processing the residual adrenaline of an event that had required physical violence from a professional whose physical training did not include violence. The tremor was visible to seventeen Perception. Mira's own perception would be reading it too.
She didn't acknowledge it. Her hands trembled and she picked up her briefcase and she walked toward the deep zone exit and her hands trembled and she said nothing about the trembling because the clinical register didn't treat the practitioner's symptoms and the practitioner's symptoms were subordinate to the patient's wound and the patient was standing and walking and the walking was the finding that the clinical register processed.
They exited through the deep zone. Through the approach zone's prostrate corridor. Through the checkpoint. The attendant stamped the exit form. The steel door closed.
---
Outside. The morning. Mira sat Shin on the staging bench. Opened the briefcase. The medical supplies inside — tape, gauze, antiseptic solution, the field-treatment kit that every dungeon healer carried. She lifted the jacket. Lifted the T-shirt. Examined the wound.
"Clean." The assessment of the external closure. "The fascial repair is holding. The skin entry point needs surface closure — medical tape, not sutures. The wound will be covered and dry by tonight. Don't sleep on your left side."
She applied the tape. Three strips. The adhesive pulling at the lumbar skin, the tension maintaining the wound edges in alignment, the field medicine of a practitioner who carried the supplies for contingencies and was using them for the first contingency that included her patient's blood on her hands and a dead spider's jaw in her memory.
"The run's data," Shin said.
"Partial. I got four reading positions before—" She stopped. Rewound the sentence to its clinical content. "Four positions. Enough to confirm Wednesday's breach timeline. The outer ring is at one point one meters. The compression is continuing. Center density at one-eighteen times ambient."
The data was the data. The data was secondary.
"The spider I killed," Shin said. "The ventral strike didn't penetrate."
"I know. I saw the crystal when I pulled it off you. The ventral plating was four times the density of the deep zone specimens. The conversion has closed the ventral vulnerability." She secured the last tape strip. Her fingers were still trembling. Two millimeters. "The knife is insufficient. The eight-percent enchantment can penetrate standard Ashburn crystal at the coxal joints, where the crystal is thin and the mechanical leverage is high. But the ventral approach requires deep penetration through plating that the conversion has reinforced. The knife can't do it."
The knife. The weapon that had been Shin's primary instrument since the first Ashburn run. The weapon whose limitations he'd compensated for with technique — the coxal targeting, the ventral approach, the three-second kill sequence that compressed the engagement timeline to the minimum that the weapon's capabilities allowed. The technique was optimized for the weapon. The weapon was optimized for a dungeon ecology that no longer existed.
The converted spiders were tougher. The ventral vulnerability was closing. The kill protocol that had produced 1,936 shadow experience on Thursday was, as of Saturday, producing incomplete kills that turned into mandibles in his back.
"We need a different weapon."
"Yes."
"Something that can penetrate converted crystal at the ventral density."
"Yes."
"What's the cost."
Mira lowered his shirt. Lowered the jacket. The clinical assessment complete, the patient dressed, the wound taped, the trembling hands performing their final function before they returned to the briefcase straps where the trembling could be absorbed by the leather rather than displayed in the open.
"A weapon capable of penetrating B-rank crystal density requires B-rank enchantment at minimum. Twenty percent enchantment rating or above. Market price for a B-rank combat knife in Tier 4's equipment dealers: eight to twelve thousand credits." She paused. "You have five thousand six hundred."
Twelve thousand credits. Twice his balance. The financial recovery that Thursday's salvage had produced was insufficient for the equipment upgrade that Saturday's failure demanded. The converted dungeon required converted equipment, and the conversion's cost exceeded the dungeon's revenue.
*Shadow Experience from this run: 832*
The run's yield. Sixteen kills — twelve in the deep zone, four in the transition zone before the ambush. The number was less than half of Thursday's 1,936. The ambush had cut the run short, and the shortened run produced a shortened yield, and the shortened yield stretched the timeline, and the stretched timeline compressed the window between leveling and the Bureau's arrival.
Total shadow experience: approximately 7,544. Seventy-five percent of Level 2. The remaining twenty-five percent — approximately 2,500 shadow experience — required the grinding capacity that the knife could no longer provide.
Mira shouldered the briefcase. The salvage bags — only four today, the shortened run producing proportionally less material — distributed between them. Two each. The load lighter than Thursday's. The walk to the market shorter in distance but longer in the silence that the walk's duration contained.
At the staging area's exit, Mira stopped. Turned. The clinical register in command, the trembling hands concealed in the briefcase straps, the finding delivered with the precision that the finding demanded.
"The spider's ventral crystal was denser than anything the knife can cut. By Tuesday's run, every spider in the transition zone will be at that density or higher. The deep zone spiders will reach it within a week." She looked at him. The eyes of a healer whose patient had been punctured by a dead thing and whose hands had killed a thing and whose professional vocabulary did not include a word for the specific state that these two firsts had produced. "Your knife is done, Shin. Whatever we bring into Ashburn on Tuesday, it can't be that knife."
She walked toward the market. The four salvage bags swaying. The morning carrying the clinical conclusion and the financial impossibility and the wound in his back whose scar tissue pulled when he turned to follow.
The knife was done. The weapon that had taken him from porter to hunter, from zero to sixty-seven percent of Level 2, from the man who carried loot to the man who made it. The knife was done because the dungeon had outgrown it, and the dungeon had outgrown it because Shin's heartbeat had made the dungeon grow.
He'd armed the thing that disarmed him.
