Days one through ten had a structure that emerged from necessity rather than planning.
Day one he established two things. First, that his detection systems worked at approximately 40% of their normal capacity in this environment, the wrong sky and the void below producing interference that Thermal Mapping and Pressure Sense both registered as background noise at a level that reduced their effective range. Thermal Sovereignty's 200-metre range compressed to roughly 80 metres. Pressure Sense at B-grade dropped from 35 metres to 20. Not enough of a reduction to make him blind but enough to make the margins smaller than he was used to operating with.
Second, that she navigated with no apparent reduction in whatever she was using to perceive the environment. She moved between islands using the void currents that Current Reading could partially map, selecting paths he would not have chosen and which consistently proved correct, avoiding island sections that looked identical to him but which she treated as distinct.
He began following her lead on island selection on day two.
Not completely. He still ran his own analysis. But when his analysis and her indicated path diverged he chose her path by day three, having accumulated enough data points by then to know that her error rate was zero and his was not.
Day three the materials accumulation began in earnest. The Compound Sense was operating at roughly 60% in this environment, the interference affecting its detection radius more than its appraisal accuracy, meaning the items it flagged were genuinely what it said they were even if it was not finding everything. The first day's flags had been at Tier 5 across multiple material categories. By day three he was finding Tier 6 materials that the system appraised in figures that made the Ashen Regent loot look modest. By day five a Tier 7 material, singular, sitting exposed on a large island's surface as if someone had left it there, which he filed as either coincidence or intention without deciding which.
He was making weight decisions immediately. VP world value per kilogram, stored in the Spatial Storage skill from floor eight of the outline he had not yet reached but which he knew was coming, his Spatial Storage not yet available meaning he was carrying everything physically. By day five the pack was at a weight that was manageable for his current stats but would have been impossible for anything below Champion tier at standard progression.
The skills began forming on day four.
Not through deliberate experimentation. Through the environment's specific pressures forcing adaptations he had not designed. On day four a creature attacked through compressed air from a direction that Pressure Sense at reduced range had not flagged in advance, the attack arriving as an impact that his Deflection Current redirected purely on reflex, and the reflex, combined with the pressure differential of the impact, produced a feedback in the Wind affinity that the system registered quietly.
[Air Sense (C) — Proficiency 1]
[A Wind sub-skill. Detects pressure differentials produced by bodies moving through air at a range beyond standard Pressure Sense. Functions in low-visibility and low-detection environments. Sub-skill of Wind Affinity (SSS).]
C-grade. The Wind affinity's floor had risen since Deflection Current had formed at E-grade in the eastern forest. He invested 200,000,000 VP into Air Sense immediately and used it on the creature that had attacked from the undetected direction.
It worked where Pressure Sense had not. The creature, still invisible to Thermal Mapping, produced a detectable pressure signature to Air Sense at a range that gave him two seconds of warning rather than zero.
Two seconds was enough.
On day six the Earth affinity contact happened. He had been sheltering for eighteen hours in a dense rock formation on one of the chain's larger islands, the formation providing cover from a creature that had been patrolling the island's perimeter for long enough that he had stopped expecting it to leave and had started thinking about how to outlast it instead. The sustained contact with the mineral composition of the rock, combined with the thermal awareness of Sovereign-grade Heat Control reading the stone's internal temperature distribution, produced something in his perception that was not thermal and was not pressure and was not any channel he had been using.
He could feel the stone.
Not its surface. Its interior. The mineral grain structure, the density variation, the fault lines that the stone had accumulated over whatever geological time had produced it. It was not a dramatic sensation. It was more like becoming aware of a sense that had been running at subconscious level and suddenly having it rise to conscious attention.
[Mineral Contact (F) — Proficiency 1]
[An Earth affinity sub-skill. Registers the internal structure of mineral surfaces in contact with the user's body. At F-grade, range: contact only. Sub-skill of Earth Affinity (ungraded).]
The Earth affinity entry appeared in his panel below the primary affinities, listed as ungraded, the system placing it in the framework but not yet assigning a letter because the affinity itself had not fully registered, just the first sub-skill emerging from the contact.
He invested 50,000,000 VP into Mineral Contact and stayed in the formation until the creature left, spending the time pushing the contact sense deliberately into the stone around him, the eighteen hours doing for Earth affinity what the first day in the forest had done for Fire.
By the time the creature moved on, Earth affinity had a grade.
[Earth Affinity — E]
On day eight Thermal Null formed. Not a new affinity. An extension of the existing Fire affinity's detection range, a skill he had been building toward without consciously knowing it, the sustained presence of creatures that produced no thermal output forcing his Thermal Mapping to begin reading their absence as information rather than the absence of information.
[Thermal Null (B) — Proficiency 1]
[A Fire sub-skill. Detects the absence of thermal output as a distinct signal. In environments where creatures operate at zero thermal emission, reads their presence as a negative heat signature against ambient background. Effective range: 60% of Thermal Mapping range. Sub-skill of Fire Affinity (SSS).]
B-grade. The Fire affinity's formation floor was rising with each new sub-skill, the SSS-grade source producing higher starting grades the deeper the sub-skill tree grew. He invested 500,000,000 VP into Thermal Null and tested it immediately.
The adjacent island showed three presences. All of them invisible to standard Thermal Mapping. All of them readable through Thermal Null as negative signatures, bodies moving through space that they were actively drawing heat away from rather than producing heat into.
He filed the data and moved to a different island.
She was larger by day ten. Not dramatically. The difference was proportional rather than scalar, the shoulders sitting higher relative to his eyeline than they had on day one, the tail length extended in a way that changed how she moved through the island terrain, and the amber eyes at a different angle relative to his own when she sat beside him. He had not commented on it and she had not indicated she noticed. She was still using the same suite of vocalisations she had developed in Irongate, the directional alert, the prohibition sound, the satisfaction indicator, the low resonant sound whose meaning he was still collecting context for.
On day ten she indicated a direction he had not considered, away from the island chain's main axis and toward a section of the void that looked identical to every other section of the void. He followed her.
She led him to the tower.
Not directly. Through a sequence of islands and void current crossings that took the better part of a full day, the route making no linear sense to his navigation logic but producing no dead ends or backtracking, each crossing arriving at the next island she had indicated as the target. He stopped questioning the logic by midday and simply moved when she moved.
They came to the edge of an island larger than any he had been on since arrival, its surface different from the others, darker material, the same dark composition as something he had not seen yet but would.
She stopped at the island's edge and looked down.
He stood beside her and looked.
The tower was below the island chain. Not below in the direction of the void. Below in the sense that it occupied a space underneath the space the islands occupied, visible through a gap in the island's surface that should not have existed, a window in the floor of the floating territory that showed a structure extending downward into a depth he could not calculate because there was no reference frame.
Dark, enormous, the heat signature reading through the gap as active and deliberate in the way the Waystones had been active and deliberate rather than the way biological systems were warm.
She made the long low sound, the one from the egg, the one whose context he had been collecting for forty-four days, the one he had heard five times before this.
He stood at the gap in the island's floor and looked at the tower and then at her.
He had been in this place for ten days. He had nowhere to stay that was not moving. He had materials accumulating at a rate the Spatial Storage he did not yet have would eventually need to manage and an investment panel he had not been able to properly review since the Compound System's fifteen-second lag on arrival.
He looked down at the tower.
"All right," he said.
She jumped through the gap first. He followed.