The trophies from the Razorback engagement were not the kind of thing to leave in the field — the iron-silica plating was immediately identifiable as useful material and the mercenary guild's contract terms specified proof-of-cull, which the cores served.
He looked at the four cores resting in Rosanne's palm.
The Fate's Eye mapped them quickly: the same fundamentally different mana structure as everything else in the primordial environment — uncompressed, dense, the tier classification absent but the intrinsic mana volume consistent with what the settlement's practitioners treated as standard low-end material.
He had been thinking about this since Isolde's laboratory work on the plant specimens.
If the atmospheric adaptation compound worked by introducing the plant's native density signature into the practitioner's channel system, allowing the channels to gradually adjust to the ambient pressure without rejection — then the beast cores, which concentrated the same environmental density in a more stable form, might serve a related function. Not the same as the atmospheric compound. Something more like a cultivation supplement: the equivalent of absorbing a beast core at home, but with the added property of the core's native density accelerating the channel adaptation to this specific environment.
The question was whether trying this on the first day in the field was the correct timing.
"I want to be honest about what I don't know here," he said. "The atmospheric compound is Isolde's work and she built three weeks of trial data into it. This is something I'm hypothesising in the field, and I want you to know the difference."
Rosanne looked at him. "What's the hypothesis?"
"That absorbing a core from this environment will accelerate the channel adaptation to the atmospheric density here. The same way beast cores at home accelerate the affinity's development, but with the additional variable that the environmental mana signature in these cores is the one we're trying to adapt to."
"And the risk," she said.
"The channel stress from integrating a mana signature that's significantly denser than what your channels are currently adapted for," he said. "The compound is providing partial protection against the atmospheric pressure, but your channels are still below the ambient density. Adding a direct absorption on top of that increases the stress load."
"How much," Mika said.
He considered. "Manageable, I think, given your current channel condition and the Tier 1 rating of these specific cores. But I want to be clear: 'I think' is what I said."
A moment of the team doing the calculation together.
"We try it," Rosanne said. "With monitoring."
"I'm watching the channel signatures the whole time," he confirmed. "If anyone's channels go into stress response, you stop and we document what happened. No pushing through."
They settled into the standard absorption formation — the tight circle that their years of mission work had established as the configuration that let him maintain visual and mana-sense contact with all four simultaneously.
The absorption process was slower than standard beast core integration.
He watched the Fate's Eye's continuous read of all four channel architectures as the primordial cores began to dissolve into the practitioner systems. The density differential was real and visible: the cores' uncompressed mana meeting channel walls that had been adapted to framework-compressed mana and having to negotiate the difference.
Not violent. Gradual and demanding.
Rosanne's breathing was deliberate — the specific quality of someone actively managing their experience rather than being carried by it. Mika and Donna were running the body-awareness protocol that Ghost Sense Stage 2 had built into their sensory architecture. Jessica's electromagnetic output was cycling at a slightly elevated rate.
He tracked the stress indicators.
Fifty minutes in, the channel signatures had reached a new equilibrium — the absorbed density beginning to integrate with the existing channel walls rather than simply pressing against them.
"How does it feel," he said.
Rosanne opened her eyes. "Different," she said. "The atmospheric pressure feels less like external pressure and more like... background. Like it's always been there."
"The channel walls are adapting," he said. "They've integrated enough of the core's density signature that the ambient environment is now closer to matching them."
"That's useful," Jessica said, from the circle. She had been quieter than usual during the process, which was her quality when she was tracking something precisely.
"It's a start," he said. "One Tier 1 core is not the complete adaptation. It's the direction."
He helped Mika to her feet when she indicated she was ready. The team's physical bearing had the quality he had learned to recognise after extended cultivation sessions — a subtle density to the movement, the body carrying its own weight differently.
"Your channel walls are thicker than they were before," he said. "Not dramatically. But measurably. The combat physics adjustments from earlier are going to feel slightly more natural now because your channels are more resonant with this environment's mana distribution."
"Which means the Tier 2 calibration will be more accurate," Rosanne said.
"Yes. The error tolerance is still there, but the baseline is better."
The Razorback carcasses were the next practical matter.
He had watched enough of Isolde's field harvest sessions — the estate laboratory's preparation protocols for portal-zone specimens — that the primordial version of the same practice followed from the same principles. The Fate's Eye's read of the carcasses gave him the structural information that made the difference between taking material correctly and taking it badly.
"The iron-silica hide," he said, showing the technique to Rosanne, who was watching with the attention she brought to practical skills. "The plates aren't random. They grow along stress lines in the organism's surface — lines that correspond to the kinetic loading patterns the animal puts its body through. If you cut against those lines, the blade resistance is significant and the material comes away damaged. If you find the uncoupling points where adjacent plates separate, the material comes away intact."
He demonstrated with the jaw vent — the anatomical feature he had found on the first visit. The plates peeled back along their actual grain rather than being forced, the iron-silica texture remaining continuous rather than fracturing at the cut.
"That's better than any armour-grade material at home," Rosanne said, watching.
"Because nothing at home has been developing for this density level," he said. "The mechanical properties scale with the environmental density."
The marrow extraction: the spatial fracture along the femoral ridge that cracked the bone without shattering it, the marrow paste preserved in the stasis containers that Isolde's specifications called for. The composition would require her laboratory's analysis to characterise properly, but the Fate's Eye suggested a high earth-element concentration that would be relevant for the alchemical work.
The meat: straightforward and exactly what the settlement's cooks were working with in the Obsidian Hearth's stew. He harvested the loin and shoulder sections with the attention of someone who understood that food was also practical infrastructure.
The team watched and helped where he indicated and learned the specific technique as he demonstrated it rather than as a formal lesson.
By the time the carcasses were processed, the material was stored correctly and the contract tags were ready for return to the guild desk.
"Good work today," he said. "The calibration, the core absorption, the harvest — all of it is data we can build from."
He looked at the steppes.
Tomorrow: the second contract. The calibration improving. The adaptation compound's partial effect supplemented by what the cores had started.
One day at a time.
The three suns were beginning their descent toward the horizon, the shadows of the metallic ferns lengthening across the basalt.
"Food," Rosanne said.
"Yes," he agreed.
They went back to the Obsidian Hearth.