The storm had rearranged the world.
Passages that Sunny had spent days memorizing were buried under new mud or opened where solid walls had stood the day before. Debris from the flood clogged junctions and created new corridors, and the tide had swept away the scavenger corpses they'd left as landmarks. His mental map was useless.
They spent the morning re-surveying from the ridge, Sunny's shadow sense reaching into the labyrinth below while Nephis studied the horizon for new high ground. The terrain to the west had changed the most. A section of coral wall had collapsed during the storm, opening a wide channel that led toward an elevated shelf of rock they hadn't been able to see before. It was higher than the ridge, darker in color, and large enough to serve as a camp for several days.
Getting there meant crossing through labyrinth passages they hadn't scouted, in terrain they didn't know, with scavenger positions they couldn't predict.
"We move at dusk," Nephis said.
Sunny looked at her. "Why dusk?"
"The scavengers are less active during the post-flood hours. The ones that survived the storm will be sluggish and disoriented. We'll have a window."
She was right. He'd observed the same pattern over the previous days but hadn't thought to exploit it as a travel strategy.
They prepared through the afternoon, packing supplies onto the Echo and eating the last of their stored meat. Cassie rode the scavenger in silence, her staff across her knees, her head tilted toward the west as though she could feel the castle pulling at her from beyond the horizon.
When the sun began its descent, they moved.
The new high ground was further than it looked. The collapsed coral wall had opened a direct channel, but the channel branched and twisted in ways that Sunny's shadow sense couldn't fully resolve from a distance. They had to navigate by feel, pressing west through passages that narrowed and widened without pattern, the mud still soft and deep from the flooding.
They encountered their first scavenger group an hour in. Sunny's shadow sense found them at a junction ahead, motionless, their bodies pressed against the coral walls in the low, flattened posture they adopted when resting. He counted them through their shadows and held up a hand.
"How many?" Nephis asked.
"Eight, all asleep at the junction we need."
"Is there another way around?" Nephis asked.
Sunny extended his shadow sense further, searching the passages to either side. Both led to dead ends within a few turns.
"No."
She looked at him. "Can you kill them quietly?"
Sunny had waited eight years for someone to ask him that question. Quiet work in darkness against unaware targets was the purest expression of everything his training had prepared him for. The scavengers were asleep, their senses dulled by the post-flood lethargy Nephis had predicted. They were packed close together, which meant each kill would need to be clean enough that the creature died before it could alert the others.
This was what he'd been made for.
"Yes," he said. "Keep Cassie here. I'll signal when the path is clear."
Nephis held his gaze for a moment. She'd seen him fight in daylight, side by side, where everything he did could pass as talent and experience. What he was about to do in the dark was something different.
She nodded.
His shadow sense mapped the junction in fine detail, each sleeping scavenger a dense knot of shadow pressed against the coral. He could feel the slow expansion and contraction of their bodies that passed for breathing, and the subtle differences in depth that told him which ones were truly asleep and which were merely still.
He moved into the passage without sound.
The mud was a problem. Each step pressed into it and the suction when he lifted his foot created noise that would carry in the confined space. So he rolled his weight from heel to toe and pulled each foot free with a slow lateral motion that broke the suction without the pop.
The first scavenger pressed against the right wall with its pincers folded beneath a lowered torso. Sunny approached from behind, where its sensory organs were weakest, and placed his hand on the carapace.
He used Shadow Consumption to pull the hardness from the chitin. The material softened beneath his palm, going chalky and porous in a widening circle, and the creature didn't stir. When the patch was large enough, Sunny summoned the Azure Blade and drove it through the weakened section into the nerve cluster where the torso met the carapace.
The scavenger died instantly. Its legs twitched once, a reflexive contraction that made no sound in the mud, and then it was still.
[You have slain an Awakened beast, Carapace Scavenger.]
[Your shadow grows stronger.]
Sunny fed from the corpse. The Awakened shadow eased the hunger back to its baseline, and he moved to the next target.
The second kill was the same. Soften the armor and drive the blade through. The third was slightly harder because the creature was pressed against another and Sunny had to work around the overlap without disturbing either. He managed it by consuming a wider patch from a distance, his palm hovering close enough for Shadow Consumption to reach but not touching, and then sliding the blade through the gap he'd created.
He dispatched the fourth through sixth with identical efficiency, and by then Sunny had settled into a rhythm that reminded him of the exercises Anvil had run him through in the killing rooms beneath Bastion. His actions remained controlled and methodical, each kill executed with the same economy of motion. His heartbeat was steady and his breathing was slow. The darkness was his environment and his ally, and his shadow sense gave him a resolution in it that no amount of natural vision could match.
The seventh scavenger occupied the junction's center, resting slightly elevated atop a debris mound, and its posture was different from the others. Its shadow wasn't settled the way the others had been. The body kept shifting in small increments, adjusting posture, and the legs hadn't fully folded beneath it. This one was resting lightly rather than sleeping, behaving more like a sentry than a creature at rest.
He adjusted. Instead of approaching from behind, he circled wide and came from below, using the depression where two passages met to keep his profile beneath the creature's sightline. The approach took twice as long as any of the previous kills. When he was close enough, he pressed his palm to the underside of the carapace where the legs joined the body and consumed fast, pulling the rigidity from the joint before the creature could register the contact.
The leg buckled, and as the scavenger started to shift with its sensory organs flaring, Sunny drove the blade upward through the softened joint and into the body cavity. The creature convulsed once, hard enough that its pincer scraped against the coral wall, and died.
The sound of chitin on coral echoed through the junction.
Sunny froze. His shadow sense swept the passage in every direction, searching for a reaction from the eighth creature, but nothing moved.
He found the eighth scavenger pressed into an alcove near the junction's far exit, still asleep and undisturbed by the scrape. Sunny killed it the same way he'd killed the first seven.
He cleaned the blade on a strip of seaweed and went back for the others.
They reached the new high ground before full dark. The broad flat expanse of dark stone rose well above the flood line, with natural windbreaks along its western edge. A shallow depression near the center provided a naturally sheltered camp. Nephis approved it with a nod, which was her highest form of praise.
They made camp. Sunny laid out the soul shards from the eight kills and pushed them all toward Nephis without ceremony. She absorbed them one by one, and each absorption tightened the set of her shoulders slightly, the physical strength settling into her frame in increments that only someone watching closely would notice.
Sunny was watching closely.
The Echo stood at the shelf's edge, facing outward. Cassie had already fallen asleep against its flank with her staff clutched to her chest.
Sunny was about to sleep himself when his shadow sense caught something that made him go still.
A scavenger, deeper in the labyrinth, moving with a strange lateral gait. He tracked it through its shadow, trying to understand why the movement pattern looked wrong. Scavengers walked forward and didn't sidestep unless something was pushing them.
Then his shadow sense found what was pushing it.
A second shape, much larger, herding the first with a slow, deliberate purpose. The shadow it cast was immense, and denser than anything Sunny had felt since arriving on the Forgotten Shore. Where ordinary scavengers cast shadows that felt like coarse fabric, this creature's shadow felt like iron.
Sunny followed the shape as it moved through the labyrinth, tracking the density and the movement and trying to match it against the creatures he'd encountered. It wasn't a regular scavenger. It was too large and too heavy, and it moved with a purpose that suggested intelligence rather than instinct.
Then it passed through a section of the labyrinth where the coral walls were low enough for moonlight to reach the floor, and Sunny saw its shadow in full resolution.
It possessed bone scythes instead of pincers, and a humanoid torso rose from its segmented body. The carapace was the color of old blood and black iron, with spikes erupting from the joints.
One of the large variants they'd watched from the coral island, except this one was alone and hunting.
Sunny pulled his awareness back and turned to find Nephis watching him. She'd seen his expression change, and she was already reaching for her sword.
"What is it?"
He kept his voice low.
"One of the big ones with the bone scythes. It's in the labyrinth below us."
Nephis went quiet for a long time. When she spoke, her voice was flat and careful.
"How close?"
Sunny checked again. The creature was still moving, herding the smaller scavenger through the passages with the patience of something that had nowhere to be and nothing to fear.
"Close enough that if we go down tomorrow, we'll run into it."
Nephis looked at Cassie sleeping against the Echo, then back at Sunny.
"Can we go around?"
Sunny extended his shadow sense as far as it would reach, mapping the passages in every direction, searching for a route that avoided the creature's patrol range. The labyrinth was narrow here, funneled between the collapsed coral and the elevated shelf, and every passage leading west ran through the same section where the creature was moving.
"No."
Nephis absorbed this. Her expression didn't change, but Sunny could see her running the same calculation he was running, measuring what they had against what they would need.
"Then we fight it," she said.
Sunny looked at the labyrinth below and thought about bone scythes that could cut through Awakened carapace like paper, and about the fact that the regular scavengers fled from these things on instinct. Whatever it was, it was built to kill things much stronger than them.
"Yes," he said. "We fight it."
Neither of them slept well that night.