He gave Cait the builders’ documentation that morning.

All of it—the complete Vael’s Crossing folder from Arveth’s Archive, plus the relevant sections from the Kael’s Seat documentation that described Stage 5’s construction and function. He told her to read it and ask questions when she had them. Then he went to find Varn.

Varn was at zone 5’s entry point, running his first post-Stage 3 ambient readings. The suppression field had dropped enough that S-Rank hunters could now enter zone 5 without full output suppression—their skills activated at reduced capacity, perhaps sixty to seventy percent, but activated. Varn had tested this himself at the sixth hour and had come out with his Void Path output functional and a set of readings that he was comparing against his four years of pre-crisis data.

He looked up when Kai arrived.

"Zone 5’s ambient is running lower than anything I’ve recorded in four years of monitoring," he said. "Not just lower than the crisis period. Lower than pre-crisis baseline." He showed Kai the comparison. "Stage 3’s activation is pulling the entity-ambient downward more effectively than I would have projected from a single stage. The Kael’s Seat entity’s amplification probably accounts for some of that."

"The Stage 5 design," Kai said. "The builders’ specifications are six hundred years old. I need to know what the current substrate conditions are in the city foundation layer at the Stage 5 placement depth."

Varn looked at him. "Current as in—from my monitoring data."

"Yes."

Varn opened the folder he had been reading. He pulled the substrate depth analysis section and laid it on the station desk. "My readings go to 380 metres depth in zone 5. The Stage 5 placement depth is 280 metres based on the builders’ specifications. I have four years of data at 280 metres." He spread the readings. "What specifically do you need?"

"Geological pressure distribution at 280 metres. Material composition changes from the builders’ survey period. Anything that would affect a pre-Guild substrate construction at that depth."

Varn read for a moment. "City foundation construction shifted the pressure distribution at 260 to 300 metres in the western city approach sectors. The original surveys were done before the city’s current western extension. There’s a pressure concentration at 285 metres in sectors four and five that wouldn’t have been in the builders’ survey data." He pointed at the relevant entry. "If Stage 5’s placement specification puts any of its junction points in sector four or five at 285 metres—"

"The Stage 5 design places the primary junction at 283 metres in what would currently be sector five," Kai said.

Varn nodded slowly. "Then the design as written would put the primary junction inside the pressure concentration. The concentration isn’t extreme—it wouldn’t collapse the structure. But it would create sustained stress on the primary junction that the builders’ tolerances weren’t designed to handle."

"I need to shift the primary junction outside the concentration," Kai said. "Which means adapting the whole design to maintain the spatial relationships between junction points."

"By how much does it need to shift?"

"That depends on the concentration’s boundary."

Varn pulled another readings section. "I can give you the boundary from my data. Four years of readings at 280 to 290 metres, sectors four through six." He spread the readings and drew a boundary line across them. "Shift the primary junction north of this line and it’s outside the concentration. Eight to ten metres north of the builders’ original placement."

He went to Cait at the branch archive.

She had been reading for two hours. She looked up when he came in with Varn’s boundary data.

"The branch archive has the city foundation survey from 312 years ago," she said, before he could speak. She had the survey spread across the table beside the builders’ documentation. "I found it when I was cross-referencing the Stage 5 placement coordinates. The survey was done when the city’s western extension was built. It includes the substrate depth analysis for the extension’s foundation construction."

She showed him the relevant section. Pressure distribution at 280 metres, sector five, the western extension’s foundation introducing the concentration that Varn’s data had confirmed still existed 300 years later.

"Eight metres north would put the primary junction at sector five-north," she said. She had already done part of the calculation. "The survey shows sector five-north at 280 metres as standard geological composition. No concentration, no introduced materials. Same conditions the builders’ specifications were designed for."

She looked at him.

"I’ve been reading this documentation for two hours," she said. "The entire historical record of what’s been sitting under my zone system for six hundred years, producing the crisis I’ve been managing for eleven months."

She looked at the builders’ folder.

"Every team I sent into those zones was trying to suppress symptoms of something that required a different kind of operation entirely. Something that wasn’t in the Guild’s operational framework because the Guild didn’t know the framework existed." She looked at Kai. "Thirty-one hunters."

He let her hold the weight of it.

"How long does Stage 5 take to build?" she said.

"Three weeks," Kai said. "Approximately."

She nodded. Filed it. Moved on.

"What do you need from me during construction?"

"Zone 5 access. No interference with the substrate work. The city foundation survey reference if I need to check placement during the build."

"Done." She closed the survey. "I’ll have the adapted coordinate set ready by this evening, incorporating Varn’s pressure boundary and the survey data."

He sat at the table in the branch archive’s reading room that afternoon and worked through the adapted Stage 5 design.

Primary junction: shifted eight metres north to sector five-north, 280 metres depth. Secondary and tertiary junctions adjusted to maintain the spatial relationship ratios the builders’ specifications required. The bypass channel connection—Stage 5 would also need a fourth junction, if the pattern held—noted but left for when he could read the structure directly rather than projecting from the other networks’ pattern.

The adapted design took four hours. When it was finished, he had a Stage 5 specification that would work in Vael’s Crossing’s current geological conditions.

He reviewed it once more and set his pen down.

Neral was standing behind his left shoulder.

He had not heard him come in. Neral moved quietly when he chose to, which was not often.

Neral looked at the adapted design on the table. He looked at it for a long time. His expression had none of its usual theatrical quality—no self-aware irony, no performed consideration. He was simply reading it with the full attention of someone for whom the document had specific meaning.

He said: "No."

He reached past Kai and picked up the design.

He sat down across the table, took Kai’s pen, and drew a correction. Not a small adjustment—a significant revision to the tertiary junction’s placement and the lateral relationship between the secondary and tertiary junctions. The correction changed the geometry of the lower half of the Stage 5 structure in a way that Kai had not considered from the builders’ Kael’s Seat documentation.

He set the pen down and pushed the corrected design back.

"Where did you get that," Kai said.

Neral looked at him. The theatrical quality was still absent.

"I’ll explain tomorrow," he said.

He stood and left the reading room.

Kai looked at the corrected design. 𝒻𝘳ℯℯ𝑤ℯ𝒷𝘯ℴ𝓋ℯ𝘭.𝑐ℴ𝑚

The correction was structurally significant. It was not a variation on the Kael’s Seat Stage 5 design or the Vael’s Crossing builders’ original specifications. It was information that came from somewhere else entirely.

Neral had been carrying something for a long time.

Tomorrow he would say what it was.