The second wave arrived three hours and fifty-one minutes after the first.

Vane was at the north window when Isole said “two minutes” from somewhere behind him, and the quiet certainty in her voice made the evaluation band on his wrist redundant. He’d already learned that about her in the field — the band gave a sixty-second alert and she gave two minutes, which meant she was faster than the Academy’s sensor grid by a factor of two, and that was a margin worth building around.

“Ashe,” he said.

She was already coming through the door, lacing the second gauntlet.

The second wave was heavier. Not dramatically — the constructs were still iron-framed, still fundamentally soldier-shaped — but the proportions had shifted. Taller by half a head, the plating thicker across the chest, the stride carrying more weight per step. Fifteen of them this time, and they came down the north approach in a tighter formation than the first wave, more deliberate, the gaps between them smaller.

Ashe hit the formation at the flank rather than the center, which was the correct call for a denser line. She opened the left side and let the formation fold inward on itself, and the folding created the kind of close-quarters chaos where size and formation discipline became liabilities. By the time Vane moved up to support, the back half of the formation was already disordered.

He took the rear three.

The Silver Fang at low output had the quality of a clean cut rather than a detonation. He’d been training it that way deliberately — not every engagement needed a full burn, and a full burn at wave two of eighteen was a commitment that would cost him something invisible and real by wave twelve. The rear three constructs went down with enough mana spent to matter and not enough to register.

He stood in the killing field and watched Ashe finish the last one.

She had a specific quality at close range that he found himself cataloguing with more attention than was strictly tactical. The axes moved in short arcs at maximum density, never overextended, always another strike already loading from the preceding one’s momentum. It was not flashy. It was thorough in the way that a person is thorough when they have done something ten thousand times and stopped performing it long ago.

She pulled her left blade free and looked at the field.

“Three hours to wave three,” she said.

“Two hours and forty-one minutes,” he said.

She gave him a flat look and went back inside.

By wave four, the pattern of the stronghold had settled into a kind of muscle memory.

Isole ran the early warning with the reliability of a mechanism. Two minutes of lead time, every wave, without variation. She never seemed to prepare for it — she simply knew, the way she seemed to know most things about the space the group occupied. The only exception was once, between waves three and four, when she paused in the central chamber and turned her head toward the east wall and said nothing for a full ten seconds.

Vane waited.

“Something old is buried under the eastern approach,” she said finally. “Not a construct. Something that was here before the evaluation.” She looked at the wall. “It is sleeping. I do not think we need to worry about it.”

Vane made a note in his tablet. “If that changes, tell me immediately.”

“Obviously,” she said, and went back to her equilibrium work.

Valerica held the east approach through waves three and four and part of five while Vane ran the north with Ashe, and somewhere in that stretch the two of them found a working relationship that had not existed in quite this form before. He watched it happen from the north-facing window between his own intervals — Valerica adjusting her gravity application to the specific width of the east corridor, the way she compressed the approach into a funnel that the constructs couldn’t spread through, and Ashe identifying this without being told and using the funnel’s mouth as her engagement point rather than fighting the constructs in open ground.

They didn’t discuss it. They observed each other once, made the adjustment, and operated.

By wave five Valerica’s gravity funnel and Ashe’s chokepoint positioning had become a mechanical system that needed no oversight. He took it off his mental register of things that required attention.

Hour sixteen brought the first real problem.

Wave five had been Sentinel-tier. The constructs were heavier, faster, and their mana density had shifted from Adept-grade to something that absorbed the first impact without registering damage, which was a different kind of opponent entirely. The east approach had taken the largest group — nine constructs, tighter formation, more coordinated — and Valerica had handled it, but the sustained gravity field at the intensity required to slow Sentinel-tier constructs for long enough to engage them cleanly had cost her something that showed in the set of her jaw when she came back inside.

She sat on the stone floor of the central chamber with her back against the wall and said nothing.

Vane looked at her. She looked at the ceiling.

“Two hours and fourteen minutes to wave six,” he said.

“I know,” she said.

“Your window is—”

“I know what my window is.”

He sat down across from her. He pulled two field rations from his pack and set one beside her and opened the other.

The chamber was quiet except for the hum of the Siege Core and the distant sound of wind through the vault access below. Isole was in the vault, mapping the lower tunnels. Ashe was on the outer wall running intervals.

Valerica picked up the ration. She ate half of it with the mechanical focus of someone treating food as fuel rather than anything else. Then she said, without looking at him: “The cost-per-wave is higher than I projected.”

“I know.”

“My projections were accurate. The system is calibrating faster than the historical data suggested.”

“I know.”

She looked at him. “You adjusted my window in the rotation before we dropped.”

He said nothing.

“You accounted for this.”

“I adjusted for a probability.”

She held his gaze for a moment. Then she went back to the ration. “Fine,” she said. It was the same word Ashe had used the night before, looking at her rest windows, with the same flat precision.

He ate his ration and they sat in the quiet of the central chamber and didn’t talk about it further.

The moment happened between waves six and seven, in the forty-one-minute window after wave six ended and before Isole would give her two-minute call.

He was on the outer wall, east side, the lower approach visible from the battlements in the fading afternoon light. Ashe came up from the interior stairs and dropped down beside him on the stone, and she sat with her back against the parapet and her legs stretched in front of her and her arms resting on her knees. The kind of sitting that said the body had decided to stop on its own terms before someone told it to.

He stayed where he was, watching the tree line.

Neither of them spoke for a while.

She reached into her pack and produced a canteen, drank from it, and held it toward him without looking. He took it and drank and handed it back. She set it between them on the stone.

Below, the killing field was still. The grass was trampled across the east approach and the north approach from five waves of constructs, the flattened strips visible even in the low light. The amber glow of the Siege Core bled faintly through the narrow window behind them.

Isole was below, in the vault. He was aware of this. He was aware that the wall behind him had no windows facing this direction and the battlements were above any sightline from the interior.

He was also aware that this was an irrelevant observation.

Ashe looked at the sky, which had gone the pale grey of a spring evening approaching dusk.

“Hour seventeen,” she said.

“Yes.”

She picked up the canteen and took another drink. She capped it and rested her head back against the parapet stone.

“What does forty feel like?” she asked.

He thought about Mourn-Hold. About the Grave Warden in the flooded corridor with his left arm fractured and the Silver Fang running on the last reserves of what he had. About the quality of thinking at that point, the way the calculations had slowed and the instinct had sharpened because instinct was cheaper than calculation.

“Everything gets quieter,” he said. “Not easier. Just quieter.”

She looked at the sky for another moment. Then she closed her eyes.

“Wake me at two minutes,” she said.

She was asleep in four.

He stayed where he was and watched the tree line and listened to her breathe, and the Siege Core hummed its quiet amber note through the wall behind them, and the evaluation band ticked over to hour eighteen.

Source: Webnovel.com, updated by NovelKeep