He descended at first light.

Five chains built. He knew the approach: establish the anchor, set the first conducting element, let the entity’s existing management architecture meet the new infrastructure halfway. The technique was established. He had refined it across three arcs of the road network’s construction.

He held the carrier function at full depth and reached for the anchor point.—

The grammar didn’t seat.

Not violently. No fracture in the substrate, no destabilizing pressure release. The anchor tried to distribute across the standard five-point pattern and the entity’s architecture simply didn’t accept it. The load distribution below was asymmetric. The five-point pattern expected a radial structure. What was here was something else—shaped by decades of workaround pressure running in a single direction rather than slow even accumulation. The anchor tried to hold and slipped sideways. He released before it could fail.

He surfaced.

First fail. That was the grammar mismatch the source had communicated—different architecture, different approach needed. He had filed it. He should have read it more carefully before descending.

Pool at thirty-eight percent. Sixty-two percent drawn for nothing set.

Soren was already running his equipment. He had been since Kai surfaced.

"The substrate pressure shifted when you attempted the anchor. The entity’s Rift output changed character for approximately forty seconds, then restabilised." He showed Kai the readings. "The entity responded to the attempt. It knew what you were trying to do. It held its architecture stable while you worked rather than pulling away."

He looked at the numbers.

"It was cooperating with a failed anchor attempt."

Patient entity. Good to know.

He rested through the morning. Pool recovering. The source was present in the substrate below—steady, not communicating anything specific, just available the way it had been since the fault build. He hadn’t asked it for the entity’s architecture before descending. He had assumed the standard approach would need adjustment, not that it would fail entirely.

He noted this under: assumptions were how you ended up at thirty-eight percent with nothing built.

Afternoon. He tried a modified approach—nudging the anchor’s distribution slightly, trying to account for the asymmetry he’d felt in the first attempt. Better. The anchor held for eleven seconds before the grammar mismatch asserted itself and he had to release again.

Pool at twenty-two percent by the time he surfaced.

He ate. He sat with the carrier function open, reading the substrate below. Trying to understand the entity’s actual architecture at the depth he could reach without the full combination of Dragon Mode and Source Point integration. The shape was there. Asymmetric. More like the pressure routing of the fault build—directional, concentrated—than the standard slow-accumulation radial structure.

He needed to read it properly before the next attempt. With everything available. He would do that in the morning, when the pool had recovered.

The creature came at dusk.

He felt it in the substrate first—a pressure differential reading, something large moving through the eastern scrubland’s surface layer. Dragon Mode picked up the surface read automatically. He was on his feet and moving before the older man had turned from the fire.

It came through the tree line at the camp’s south edge. Large—heavy-bodied, low to the ground, six-limbed with the front two adapted for striking rather than walking. The path-energy coming off it was the wrong frequency for anything in the Guild’s bestiary. Not zone ambient. Not converted path-energy. Something deeper. Formation-layer.

He ran Dragon Predator Mode at full depth and tried to read it.

The surface energy signature resolved clearly. The deeper pattern—what drove its movement, where its actual power concentrated—was below the depth Dragon Mode had ever needed to reach in the western hemisphere. He pushed.

The creature struck.

He activated Impact Frame as it landed—the first strike deflected, not cleanly, the creature’s weight enough to stagger him even with the frame active. It was faster than its size suggested. The front limbs had a range he hadn’t read correctly from the substrate signature.

Predatory Burst Step carried him laterally, putting distance between them, and he read while moving.

Dragon Mode at the depth he was pushing: formation-layer. The eastern substrate ran deeper and denser, and this creature had adapted to it. Its power didn’t come from converted zone energy—it came from direct contact with the formation layer below the surface. That was why the frequency was wrong. He was reading something that lived in a layer below what the western zones had ever produced.

The creature tracked him. Accurate. It was reading his movements through substrate vibration rather than sight.

He stopped moving.

The creature oriented. Settled. Then struck.

He activated Impact Frame at the last possible moment and let the strike land fully, reading the creature’s energy at contact.—

Formation-layer power signature. Two primary concentration nodes: one below the front-left limb, one in the body’s lower thorax. That was where the energy cycled. Where it was vulnerable.

Rending Strike at the thorax node. The creature pulled back—not from pain exactly, more the way something pulled back when its primary energy cycle was disrupted.

He followed.

Predatory Burst Step at full draw, three seconds, closing the distance the creature had created. Second Rending Strike at the front-left node while it was still recovering from the first disruption.

The creature’s energy cycle broke.

It took another forty seconds to bring it down. The pool was at nine percent by the time it stopped moving.

He stood in the eastern scrubland’s dusk and read what had just happened.

Formation-layer energy signature. Adaptation to deep eastern substrate. Not in the Guild bestiary because the Guild had never been here. Dragon Mode needed to reach that depth to read it properly. It reached it.

Dragon Predator Mode — Depth Extended Eastern substrate resonance: integrated Formation-layer read: available New read ceiling: formation-layer architecture

He looked at the Rift below him.

Formation-layer read. Which meant he could read the entity below at the depth its actual architecture existed—the depth the two failed anchor attempts hadn’t reached clearly enough. He had been trying to build a chain interface for an architecture he’d only partially read.

Tomorrow. Full rest. Pool to one hundred percent. Then Dragon Mode at formation-layer depth, Source Point integration at full combination, and read the entity properly before attempting anything.

The older man was already cleaning the creature. He worked with the specific efficiency of someone who had field-dressed things in difficult places for a long time and found nothing remarkable about doing so again.

Mira was reading the vault pair.

"Seven signals," she said. Steady. "The entity’s signal shifted when you fought. The substrate pressure changes during combat—it reads them. It’s been below this Rift for twenty years. It knows when the ground above changes."

Alert entity. Good to know.

He sat down.

The source was steady in the deepest layer.

Morning would be better.