By the third night, Shin could kill a crystal centipede in four seconds.
Not every time. The enchantment cycling still threw variables into the equation — a long "off" window could stretch a kill to twelve seconds, and a centipede that detected the disturbance from a nearby kill could force him into a defensive retreat that ate time and focus. But when the conditions aligned — approach from behind, enchantment live, clean angle to the mana core segment — four seconds. Approach, thrust, twist, withdraw. The centipede would split into disconnected links and he'd already be moving toward the next one.
Night two had been twelve kills. Night three, fifteen. The evolving section of Ashburn's deep corridors was producing centipedes faster than Shin could clear them, which meant the population replenished between sessions and he never ran out of targets.
The routine had crystallized into something almost mechanical. Report to the freight entrance at 5:48 PM. Carry equipment until Polk's attention drifted, which happened reliably around 11 PM when the overnight paperwork hit its midpoint and the freight supervisor's eyes glazed with the particular boredom of a man who'd rather be anywhere else. Slip past the sublevel three caution tape. Descend into the evolving section. Hunt until 4 AM. Return, clean the blade, sleep on a supply crate until the 6 AM shift change. Bus to the barracks. Two hours of real sleep. Market deliveries until the next evening shift.
The math was working. Four nights, roughly fifty kills, four hundred shadow experience units gained.
His body wasn't breaking this time. The sword made the difference — sixteen inches of reach meant fights happened at arm's length instead of grappling range, and the Piercing II enchantment, even degraded, cut crystal faster and cleaner than the old dagger's Sharpness I ever had. His injuries were maintenance-grade: bruised knuckles from grip fatigue, sore shoulders from the repetitive striking motion, a shallow mandible cut on his left forearm from a centipede he'd misjudged. Nothing that required Vasquez.
The sword, though. The sword was dying.
---
He noticed the change on night two. The "on" cycles, which had started at three seconds, were clocking closer to two and a half. By night three, some cycles ran only two seconds before the enchantment flickered out, and the "off" windows had stretched proportionally — three seconds, four, once a full five-count of dead steel before Piercing II sputtered back to life.
Each strike against crystal wore the split mana channel. The degradation was cumulative, invisible on any single strike but measurable across sessions. Shin tracked it the way he tracked everything — with obsessive precision, counting "on" duration against number of strikes, plotting the decline.
Night one: ~45 strikes, "on" window averaging 3 seconds.
Night two: ~50 strikes, averaging 2.5 seconds.
Night three: ~55 strikes, averaging 2.2 seconds.
The decline was linear. If it stayed linear, the enchantment would fail completely around 200 total strikes. He was at roughly 150. Fifty strikes left. Maybe three more nights of hunting.
After that, the sword was just steel. Unenchanted steel couldn't penetrate crystal. Without Piercing II, the centipedes became untouchable, and his grinding stopped.
Fifty strikes. Forty shadow experience per night. Maybe 120 more experience before the weapon died. His current total after three nights was 434.3. Add 120 and he'd land somewhere around 550.
Not enough. Not close to enough. He needed 1,000, and the gap between 550 and 1,000 was the width of everything he hadn't figured out yet.
But that was a problem for night five. Tonight was night four, and he still had strikes left.
---
Garrett caught him at the barracks between shifts.
Shin was eating rice from a styrofoam container, sitting on his cot, reviewing the mental map of Ashburn's deep sections. He'd identified fourteen distinct corridors with centipede populations, three chambers with clusters of two or three, and a network of narrow passages that he hadn't explored yet. The rice was cold and slightly stale, purchased from the Block 4 stall that sold yesterday's surplus at a discount, which in Tier 5 meant food that a Tier 3 restaurant would have thrown away the day before.
"Zero." Garrett materialized in the doorway with the silent efficiency of a man who'd practiced catching people off-guard. "Walk with me."
Not a request. Shin put down the rice and followed.
They walked around the barracks perimeter — the narrow strip of packed dirt between the shipping containers and the scrap yard fence. Garrett kept his hands in his pockets and his voice low, which meant this conversation was being kept off whatever record Garrett considered official.
"The Hollowfield audit came through," Garrett said. "Bureau reviewed all porter activity logs for the rotation period. Your name's on five of the seven flagged shifts."
"I was assigned to those shifts. By you."
"I'm aware." Garrett's jaw worked once. "The audit isn't accusing anyone of anything. It's correlation — they're looking at who had access during the period of anomalous mana readings, cross-referencing with the inspection team's findings. Your file got flagged because you were there the most."
"Dalton was on four of the seven."
"Dalton's file got flagged too. So did Reese's and two of Team Twelve's members. The Bureau's casting a wide net." Garrett stopped walking. Turned to face Shin directly. "But Dalton and Reese and Team Twelve are all registered awakeners with clean backgrounds and established patterns. You're a Level 0 with a status screen that reads ERROR across the board. When the Bureau sees an anomaly in a dungeon, and the porter who was there most often is himself a System anomaly—" He let the implication hang.
"They'll assume correlation."
"They'll assume correlation is worth investigating. Which means someone from the Bureau might come talk to you. Routine. Friendly. The kind of friendly that writes reports afterward." Garrett resumed walking. "I'm telling you this because if a Bureau agent shows up at my barracks and starts asking my porters uncomfortable questions, it reflects on me. And things that reflect on me tend to resolve in ways that don't favor the person who caused the reflection."
Translation: if Shin's situation caused problems for Garrett, Garrett would cut him loose without hesitation and frame the cut as Shin's fault.
"Understood," Shin said.
"Good." Garrett pulled out his tablet, already pivoting to the next item on his agenda. "The Ashburn freight contract got extended. Two more weeks. Polk's satisfied with the crew, so you're staying on unless you give me a reason otherwise."
"No reason."
"Keep it that way."
Garrett walked back inside. Shin stood in the dirt strip between the containers and the scrap fence, the cold rice sitting heavy in his stomach, and added "Bureau investigation" to his list of variables.
The list was getting long.
---
Hana came back from the Greyvein Mine rotation that afternoon, dropped her bag on her cot, and sat down with the controlled collapse of a woman who'd been standing for thirty hours.
She looked worse than when she'd left. Not injured — tired in a way that was deeper than physical, the kind of tired that accumulated from problems that didn't have immediate solutions. Her hands were taped fresh, which meant the Greyvein work had been hard on them, and her boots — the wire-soled ones that had been holding together through willpower and structural denial — had finally given up. The left sole flapped with each step, held on by a single wire that had survived whatever the right wire hadn't.
Shin was on his cot, resting before the evening shift. He didn't ask about the rotation. Hana would share what she wanted to share, which was usually nothing, and Shin would respect that boundary, which was always.
But Hana broke the pattern. She sat on her cot, looked at the ceiling, and spoke.
"Kei drew a picture at school. Her teacher sent it home." A pause. "It was a picture of a hunter. Big guy, sword, armor. Standard kid stuff, right? My daughter draws a hunter because every kid draws hunters because every kid wants to be one." Another pause, longer. "She wrote a name under it. Her name. K-E-I. She drew herself as a hunter."
"Sounds about right for a six-year-old."
"The teacher included a note. Said Kei told the class she was going to awaken at Level 100 and move her mom to Tier 1." Hana's voice was steady, factual, the voice of a woman reporting data. "The teacher said it was 'concerning' that Kei has 'unrealistic expectations about her socioeconomic trajectory.'"
Shin processed that sentence. "The teacher used those words?"
"On a note. About a six-year-old's drawing." Hana unlaced her broken boots. Set them on the floor with a care that was entirely habitual and slightly heartbreaking. "I'm going to the school tomorrow. I'm going to have a conversation with that teacher. And it's going to be professional and calm and I'm going to use my inside voice. But if that woman tells me my daughter's dreams are a socioeconomic concern, I might forget which voice is which."
She lay down and closed her eyes. Conversation over. She was asleep in three minutes, the kind of fast unconsciousness that came from exhaustion deep enough to override worry.
Shin looked at her broken boots on the floor. Then he looked at the short sword in his storage locker, its cracked enchantment flickering in the dark.
Everybody in Tier 5 was fighting something. The difference was that most of them were fighting things that couldn't be killed with a blade.
---
Night four. The deep sections. Shin moved through the crystal-lined corridors with the efficiency of a man who'd memorized the terrain and the enemies and had reduced combat to its essential geometry.
He killed the first centipede of the night in the corridor junction between sections four and seven — a clean thrust during a solid "on" window, two seconds of Piercing II punching through crystal and mana core simultaneously. The centipede died standing, its segmented body locking rigid before collapsing in a cascade of disconnected links.
The second centipede came from a branching passage. He heard the mandibles clicking — he could distinguish centipede sounds now, could tell a feeding click from a patrol click from the sharp snap of a strike — and positioned himself at the corridor mouth. The thing flowed around the corner and directly onto his waiting blade.
Two down. Sixteen shadow experience. Running total: 450.3.
He pushed deeper, past the cavern where he'd found the boot prints and the wrapper, into territory he'd mapped on night three. The corridors here were narrower, the crystal formations denser, the amber light thicker in a way that suggested higher mana concentration. Centipede density increased with mana density — where the crystals grew thickest, the centipedes clustered.
Third kill. Fourth. Fifth. The enchantment cycled — on, off, on, off — and Shin rode the rhythm, striking during the live windows and retreating during the dead ones. His body had memorized the pattern's feel even when the timing varied. The hum through the grip said *now*, and the silence said *wait*, and his hands obeyed without consulting his brain.
The sixth centipede was bigger than the others. Longer — maybe seven feet — with mandibles that were noticeably wider and a crystal shell that was darker amber, almost brown. An older specimen, or a more evolved one. It took three strikes instead of one, the extra segments absorbing damage that would have killed a standard centipede. The second strike landed during a transition — half-powered, the enchantment fading mid-thrust — and the blade bit but didn't penetrate. Shin had to wrench it free and wait for the next "on" cycle while the centipede's front half thrashed and the mandibles sheared the air six inches from his face.
Third strike. Clean. The mana core ruptured and the centipede died in a spray of amber fluid.
But the enchantment's "on" window had been shorter. Maybe a second and a half. The degradation was accelerating.
Shin checked the blade in the ambient crystal light. The fracture line across the flat had widened — barely visible, but there. The enchantment's glow was dimmer between cycles, the blue-white losing intensity, fading toward a pale wash that might be the last few degrees before failure.
He counted his remaining strikes. The math said thirty, maybe forty. Three more nights at reduced efficiency, or two nights at current pace.
The clock was running.
---
He found the dead centipede in corridor twelve.
It was unmistakable — a full-sized crystal centipede, five feet long, dead in the middle of the corridor. But it hadn't been cut. The killing method was different from anything in Shin's repertoire.
The centipede's body was intact — no blade marks, no shattered segments, no clean thrust through the mana core. Instead, the crystal shell was blackened along one side, the amber discolored to dark char, as if something extremely hot had been pressed against it. The mana core was visible through the translucent body — still intact, but dark. Dead. Cooked from the outside in.
Heat kill. Someone had killed this centipede with directed thermal force — fire magic, a heat-based weapon, or an awakened ability that generated extreme temperature. The scorch pattern was localized, precise. Not a splash of fire across the whole body. A focused application of heat to a specific area, sustained long enough to cook the core through the crystal shell.
That took skill. And power. A fire-type ability strong enough to penetrate C-rank crystal armor meant the user was at minimum a mid-tier awakener — Level 15 or above. Probably higher.
Shin examined the area around the dead centipede. Boot prints — the same size elevens he'd found before, but fresher. Hours old, maybe less. The crystal dust showed a clear trail leading deeper into the corridor system, toward sections Shin hadn't explored.
And there were new marks on the walls. Not score marks this time — geometric symbols. Lines and circles scratched into the crystal with a sharp tool, arranged in patterns that Shin didn't recognize. They looked like notations — a system for marking locations, the way a surveyor might mark reference points.
Whoever this person was, they weren't just hunting. They were mapping. Systematically, methodically, with a purpose that went beyond grinding experience.
Shin followed the boot prints.
They led through two more corridors, past a cluster of dead centipedes — three of them, all heat-killed, arranged in a loose pile as if the hunter had dragged them together — and into a section of the deep corridors that Shin hadn't reached before. The crystal formations here were the densest he'd seen in Ashburn, the amber veins covering every surface in layered growth that made the walls look organic, like the inside of a living thing.
The boot prints turned into a narrow gap between two crystal columns. Shin followed.
Behind the columns, hidden from the main corridor by the dense formations, was an alcove. Natural, roughly six feet deep and eight feet wide, with a ceiling low enough that Shin had to duck.
Someone had been living here.
A bedroll — military grade, Bureau issue, rolled tight against the back wall. A portable stove, cold but recently used, with a pot that still held residue. Four Bureau-issue energy bar wrappers, stacked neatly. A water canteen with Bureau markings. A portable mana density sensor — expensive equipment, the kind that assessment teams used, with a screen that showed a topographic map of the surrounding area in mana-concentration contours.
And a notebook.
Shin picked it up. Hardcover, Bureau-standard field journal, the kind issued to researchers and survey technicians. The cover was unmarked. The pages were dense with handwritten notes, diagrams, and data tables, all in a precise, angular handwriting that suggested someone with academic training and a fetish for organization.
He opened to the most recent page.
> **Day 12 — Ashburn Sub-4 Survey**
>
> Mana density readings confirm the cascade hypothesis. Channel mapping shows direct subsurface connection between Hollowfield core (designate HF-1) and Ashburn deep section (designate AB-4). The evolution isn't spontaneous — HF-1's accelerated growth is feeding mana through shared geological channels into AB-4, catalyzing parallel crystal development.
>
> The question remains: what caused HF-1 to begin evolving? Bureau assessment attributes it to natural dungeon maturation, but the timeline doesn't fit. Natural core evolution in D-rank dungeons takes 15-20 years. HF-1 went from baseline to 18.4% in approximately three weeks. That's not maturation. That's catalysis.
>
> Something entered Hollowfield's sublevel 4 and interacted with the core in a way that accelerated its growth cycle by a factor of 300+. The Bureau inspection report notes "anomalous mana void readings" on the hillside approach — a null signature consistent with System-level cloaking or, more interesting, a genuine null-type passive.
>
> Null-type passives are theoretical. The only documented case is
The entry stopped mid-sentence. The next page was blank.
Shin stared at the incomplete sentence. The notebook shook in his hands — not from the tremor in his right thumb, but from something deeper, a vibration in his fingers that he couldn't attribute to fatigue.
This person knew about the Hollowfield core evolution. Knew it wasn't natural. Had traced the mana channels to Ashburn. Had read the Bureau inspection report — which meant they had Bureau access, official or otherwise.
And they knew about the null signature. They'd connected it to the core's accelerated growth. They were one incomplete sentence away from identifying what — or who — had caused it.
They were looking for him. Not Shin Kaida specifically, maybe. But whatever had entered Hollowfield and pushed a dungeon core from dormant to 18.4% in three weeks. They were in these corridors right now, hunting the same centipedes, mapping the same crystal formations, building a picture that would eventually — inevitably — point to a Level 0 porter with a passive ability that shouldn't exist.
Shin put the notebook back exactly where he'd found it. Adjusted the angle to match the dust impression on the alcove floor. Checked that he hadn't disturbed the bedroll or the wrappers or the sensor.
Then he retreated. Back through the crystal columns, back into the corridor, back toward the freight access tunnel. He didn't hunt on the way out. He didn't check his experience. He moved with the silent, careful purpose of a man who'd just realized he was being tracked by something smarter than a dungeon monster.
450.3 out of 1,000. Forty-five percent. The grinding was working.
But somewhere in the dark behind him, a person with Bureau equipment and a half-finished theory was sitting in an alcove, studying a mystery that had Shin's fingerprints all over it.
And the notebook's last word — the one before the sentence cut off — was *documented*.
The only documented case is—
What? What was the only documented case? And how close was the person with the angular handwriting to filling in the rest of that sentence?
Shin squeezed through the freight entrance at 4:22 AM, nodded to Polk, and sat against the wall of the sublevel one staging area. His hands still trembled. The sword was in his jacket, the enchantment cycling weakly — two seconds on, four off — the mana channel dying by degrees.
He had maybe two nights of hunting left. Two nights to gain another hundred points, to push past fifty percent, to squeeze every last shadow experience out of a weapon that was falling apart and a dungeon that now had a second hunter in it.
And after that, the sword would die and the mystery person would finish their notebook entry and the Bureau's audit would reach his name, and every careful, patient plan Shin had built would face a deadline he couldn't extend.
He sat in the dark and did math. The math said he was running out of time on every front at once.
Two nights of hunting left. A Bureau audit working its way toward his name. And somewhere in the deep sections, a notebook sitting open with a sentence that wasn't finished yet.
