They established a routine over the following days.
The ridge Nephis had spotted from the coral island turned out to be an elevated shelf of dark stone that ran northwest for roughly a kilometer before dropping back into the labyrinth. Its surface was flat and mostly bare, high enough above the flood line that the nightly tides couldn't reach it, and wide enough that they could sleep without pressing against the edges. By the second night, Sunny had begun thinking of it as a base rather than a waypoint, which was either a sign of progress or a sign that his standards had adjusted to the Forgotten Shore's definition of comfort.
Each morning, Sunny opened his shadow sense and mapped the labyrinth passages within range, identifying scavengers by their movement patterns and the density of their shadows. He and Nephis would select targets based on isolation and approach angle, then descend together while Cassie waited on the ridge. Nephis engaged first and drew the creature's attention. Sunny came from whichever direction the creature wasn't watching and finished it.
She fought the way water moved through a channel, always forward, always adjusting, finding the path of least resistance through whatever the creature threw at her and turning its momentum against it. She didn't overpower the scavengers. She read them. Every feint and lunge became information she processed in real time, adjusting her position by fractions that added up to the difference between a lethal strike and a clean miss.
Sunny had been trained by Anvil's instructors in what the curriculum called variable-control methodology. Identify the variables in a combat situation, control the ones you can, eliminate the ones you can't. It was systematic and reliable and had kept him alive through his Nightmare. Nephis used none of it. She fought on instinct refined to the point where it looked like calculation, reading each exchange as it happened rather than trying to predict and pre-empt. The result was a fluidity that Sunny's training could recognize as superior but could not replicate.
He catalogued everything she did. He told himself this was mission intelligence, and it was. Understanding how the target fought was operationally essential. If the order came and he had to engage her, knowing her patterns would be the difference between completing the mission and dying in the attempt.
But the cataloguing had started to feel less like intelligence work and more like something he didn't have a word for. He watched her reset after a parry and noted the way her weight transferred through her hips rather than her shoulders, and the notation sat in his mind next to the way she'd healed his shoulder without being asked, and the way she'd said better? as though the answer mattered to her. None of these observations belonged in the same operational file, but they kept ending up there anyway.
He let them accumulate. Sorting could wait.
On the fourth day, they killed two scavengers in a connected pair of passages and returned to the ridge before midday. Nephis had taken a shallow cut along her forearm during the second fight, a pincer edge that found the gap between her armor's vambrace and the sleeve beneath, and she was cleaning it with seawater when Sunny laid out the soul shards.
Four of them, cold blue and bright against the dark stone.
Nephis finished wrapping her arm and moved two shards toward Sunny, kept two for herself, and gave one of hers to Cassie. The division was the same as the day before, performed without discussion because the logic behind it hadn't changed.
Sunny watched Nephis and Cassie absorb their shards. The crystals dissolved against their palms, blue light sinking into skin, and both of them closed their eyes briefly as the essence settled into their cores. Cassie's expression went still and inward. Nephis looked as though she'd swallowed something cold.
Sunny's two shards sat untouched on the stone in front of him.
He'd been thinking about this since the first hunt. His Shadow Core didn't use soul shards. They were useless to him
but nobody knew that, and the shards had value to Nephis that they couldn't have for him. That made them leverage he could spend on something he actually needed.
his Flaw required that whatever he said next be true. He'd been testing the compulsion's boundaries for weeks, learning which constructions it accepted and which ones it punished, and he'd found that the key was not emphasis but omission. He could select which truths to present. He just couldn't present anything that wasn't one.
He picked up his two shards and added a third from the pouch where he'd been storing his accumulated share. Then he pushed all three toward Nephis.
She looked at the shards, then at him. Her expression was difficult to read, but the pause before she spoke told him the gesture had registered as unusual.
"You don't want to grow stronger?"
"I do. But right now, these help you more than they help me. You're the main fighting force. The stronger you are, the longer we all stay alive."
The shards couldn't strengthen him at all.
"It's not a gift," he added. "It's a trade."
Nephis raised an eyebrow. The expression was slight, but on her it qualified as surprise.
"A trade for what?"
"All the soul shards I earn between here and that castle. Every one of them goes to you." He paused, then looked at her directly. "In return, you teach me how to fight the way you fight."
The silence that followed was Nephis evaluating him, and Sunny let her do it. She'd watched him fight for days. She'd seen his footwork and his timing, the way he found the killing angle on creatures she'd already committed to a pattern. She knew he wasn't untrained. The question she was calculating wasn't whether he could learn, but whether teaching him was worth her time.
If he was going to kill her eventually, he needed to understand how she moved, and the fastest way to learn someone's style was to have them teach it to you.
Nephis picked up the shards.
"Okay."
Cassie smiled. Sunny kept his expression measured, but the relief was real and not entirely tactical.
"When do we start?"
"Now."
He glanced at the sky. The sun had already begun its descent, and the light on the ridge was dimming toward the grey that preceded the Forgotten Shore's abrupt evenings.
"We'll start with words," Nephis said. "That's enough for today." She paused, then added, "Cassie, listen too."
They turned to face her. Cassie settled her staff across her knees and tilted her head with the particular focus she brought to anything she intended to remember precisely.
Nephis was quiet for a moment, organizing something behind her expression. When she spoke, her voice carried the same flat authority she used in combat, stripped of performance and ornament.
"Mastery can be divided into body and mind. Training the body is not easy, but it is simple. Repetition builds technique into your muscles until it becomes instinct. Then experience cements it. A real fight teaches more than a thousand hours of practice, because in a real fight, a mistake kills you. There is no substitute for that pressure."
Sunny absorbed this without surprise. Anvil's curriculum had operated on the same principle, though the language had been different. Anvil called it conditioned response integration and measured it in reaction-time benchmarks. Nephis called it instinct and measured it in survival.
"Training the mind is harder," she continued. "Once your body knows what to do, the mind is where combat actually happens. The outcome is usually decided before your body moves. And to master the mind, you need to understand one thing first."
She looked at them both.
"What do you think the essence of combat is?"
Cassie answered first, quietly. "Victory."
Sunny thought about it for a moment. His first instinct was the answer Anvil would have given, but Anvil's answer was not the kind of thing you said out loud to people you were trying not to alarm. So he reached past the training and found what sat underneath it, the thing he'd known before Anvil had shaped it into something sharper. Every fight he'd ever been in, from the outskirts to the Nightmare, had come down to the same question. Not whether he could win, but whether he could walk away.
"Survival," he said.
Nephis shook her head.
"The essence of combat is murder."
Cassie flinched. Sunny didn't.
He didn't flinch because the sentence was not new to him. Anvil had said something nearly identical during Sunny's second year in Bastion, in the windowless room where the curriculum shifted from theory to application. The purpose of combat is to end the other person. Everything else is choreography. Sunny had been eight years old and had accepted it the way he accepted everything Anvil told him, as a fact about the world that he was too young and too dependent to question.
Hearing it from Nephis was different.
The words were the same, or close enough. The truth behind them was the same. But Anvil had delivered it as an instruction, a directive that existed to make Sunny useful. Nephis delivered it as something she had learned herself, through experience, at cost. Anvil's voice had been cold and certain. Nephis's voice was cold and certain too, but beneath the certainty Sunny heard something that sounded like regret, and the regret told him she had arrived at this truth the hard way rather than having it installed.
"At the core of it," Nephis said, "you are trying to kill your opponent, and they are trying to kill you. One of you will succeed. Everything else is noise."
She lowered her eyes.
"If you can understand that, you'll have enough clarity to master the mind."
Nobody spoke for a while after she finished. Cassie processed it with the focused stillness she brought to difficult information. Sunny sat with it and felt the two versions overlap in his mind, Anvil's and Nephis's, identical in content and entirely different in origin.
He thought about the fact that the person he'd been sent to kill had just said out loud the philosophy that the person who sent him would have endorsed completely. The irony was clean and uncomfortable, and he filed it in the operational folder that had stopped being purely operational several days ago.
Later, after the dark water rose and swallowed the labyrinth below, Sunny lay on the stone and looked at the starless sky and thought about what Nephis had said.
Anvil had given him repetition. Eight years of it, relentless and precise, until his body could execute techniques without consulting his mind. The Forgotten Shore was giving him experience, the kind that came with blood and the specific focus that only existed when failure meant death. Clarity he'd thought he already had, because Anvil had explained the purpose of combat to him when he was young enough that the explanation had settled into him like foundation concrete.
But clarity wasn't the same as understanding, and Sunny was beginning to suspect that what Anvil had given him was the former dressed as the latter. Anvil's version was a tool. Know that combat is killing, and use that knowledge to kill more efficiently. Nephis's version was something larger. She hadn't said use this knowledge. She'd said understand this, as though the understanding itself was the point, as though it would change the way he moved and fought in ways that a directive never could.
The hunger murmured at his awareness. He'd fed it after the second kill, pressing his palm to the dead scavenger's carapace and letting its Awakened shadow satisfy what the mundane coral couldn't. The relief had lasted most of the afternoon, but now, in the stillness, it was building again. He shifted on the stone and ignored it.
Beside him, Cassie's breathing had evened into sleep. Nephis sat at the ridge's edge with her sword across her knees, watching the black water below. The night was quiet except for the tide and the occasional distant sound of something moving through the labyrinth beneath them.
Sunny closed his eyes and thought about the days ahead. More hunting. More shards he couldn't use, traded for lessons he genuinely wanted. More time watching Nephis fight and cataloguing what he saw and pretending the catalogue was still entirely professional.
West. The castle was west, and so were the creatures carrying soul shards to something they served, and so was whatever waited at the end of this path that Cassie's vision had shown them.
He fell asleep thinking about cold grey eyes.