The first thing Isaac remembered was the Shardback’s bloom.

  Plates detonating outward in waves.

  A crown of knives.

  His good wing thrown up on instinct as the world turned into skittering glass and screaming seams, and Zoya’s bracer flaring hot enough that the pain hit teeth and gut before it hit thought.

  Then light.

  Not seam-glow.

  Not lantern.

  Just the violent electric-white punch of it, still trapped behind his eyelids even after he’d slammed them shut.

  Then sound arrived late.

  Glass-beads on metal.

  A thousand knives skittering.

  The world coughing itself apart.

  He had hit the ground hard enough to make his bones argue about it.

  Rain found him immediately, cold and relentless, cutting lines through the crystal dust on his skin and turning it into gritty paste.

  The air was not cave-air.

  It moved.

  It carried a wet-green rot note from somewhere lower, and a mineral tang from the shard belt, and underneath both, that faint wrong sweetness of Breath burn, like lightning had left a taste behind.

  His lungs came back in ragged, mean pulls.

  Each breath tasted like copper grit and shattered crystal and something sharp that wanted to become light.

  He didn’t move at first.

  Not because he couldn’t.

  Because he was counting what still belonged to him.

  Left leg, screaming but present.

  Right wing, heavy.

  Left wing, heavier, and wrong.

  Plates missing in clean strips, as if something had unbuttoned him.

  And it changed how he stood even before he stood, balance pulled off-center, one wing still a wall, the other already a liability.

  Under-skin exposed in pale lanes that the rain kissed like it was curious.

  Cold air hit it and turned it to fire.

  Zoya was beside him.

  Not tucked.

  Not small.

  Just there, braced on one elbow like she’d been dropped and refused to stay down out of spite.

  Her hair was wet and plastered to her cheek.

  Her jaw worked once.

  Once.

  Then it locked.

  She didn’t look at him first.

  She looked back at the place they’d come out of.

  The rootglass ribs.

  The shadowed gullet in the terrain that had been a pantry with teeth, a throat-shaped ravine that didn’t need walls to trap you because the routes did it for free.

  Beyond that, the landscape opened wide, wrong in the way the Core was wrong, like a whole world had been folded and sealed under the crust and told to keep living anyway.

  Cloud lay low, snagged on distant crystal spires that cut the horizon like broken teeth.

  Far up, something winged crossed the grey, a dark stitch against a diffuse light that behaved like a sun but never sat where it should.

  Then she looked to the side.

  The shard river.

  A grinding belt of glittering fragments pretending it was water, still flowing fast, still hungry, still shaving the world down to nothing with patient insistence.

  Tetley sat with his back to them.

  Six limbs tucked.

  Two tails low.

  Ears angled toward a narrow vent-slit in a rock face like it was a mouth calling his name.

  The collar node was dark.

  If the cat had just done something impossible, he wasn’t advertising it.

  Isaac pushed himself up slow.

  Every motion made the exposed wing-skin flare with pain.

  He didn’t let it change his face.

  He checked Zoya’s shoulder with his eyes, not his hands, because touching meant admitting fear.

  She rotated her arm a fraction.

  Bad.

  Not useless.

  Bad.

  Her fingers flexed around the linehook handle like it was the only thing she trusted to stay true.

  They did the other thing next.

  The routine thing.

  No ceremony.

  No speech.

  Isaac turned his attention inward, the way he did when he called up tools, and the Breathmark satchel answered like a trained limb, responding to will, not hands.

  Weight settled against his hip as if it had been there the whole time.

  He popped it open and let the storm see what it wanted.

  Clean gauze.

  A bandage roll.

  A little tin of antiseptic that looked too bright for the Core.

  Zoya didn’t comment.

  She just leaned in, already moving.

  She wrapped her shoulder first, fast and practiced, teeth clenched while she pinned the edge with her thumb and pulled the strip tight enough to remind the joint who owned it.

  Isaac set his own leg with a quick brace of cloth and a knot that bit.

  Then the wing.

  He didn’t try to make it pretty.

  He pressed gauze to the exposed lanes, felt the cold turn instantly to needles, and bound it in overlapping turns that didn’t tug the plates, only held the soft under-skin out of the rain’s curiosity.

  Three times now, maybe more, they’d done this.

  Same motions.

  Same silence.

  Same decision to keep moving anyway.

  They didn’t speak about the Shardback.

  They didn’t speak about the way Isaac’s hands had felt when he’d used shardmail on purpose.

  Some things were too loud to name down here.

  Zoya finally breathed out.

  Not relief.

  A decision.

  “Okay,” she said, too fast.

  Too thin.

  “New rule.”

  She didn’t let it hang.

  She paid it off like a command she could obey.

  “Edge,” she said. “Around. Not in.”

  Isaac didn’t ask.

  He watched her eyes.

  They were already scanning, already mapping routes, already measuring what was real.

  She nodded toward the basin ahead.

  The ground didn’t keep going.

  It opened into a broad dish of old mud, crystal splinters, and rain-scoured stone, and in the center of it something had been planted and left to grow.

  A labyrinth.

  Half-buried.

  Half-risen.

  Walls of fused hard-glass and vein-bright seams, not tall enough to be a fortress, too tall to be natural, every angle too clean, every turn too intentional.

  Channels ran down the sides like knife-slit grooves, cut to carry water away into dark gaps beneath the structure.

  The storm hit it and didn’t win.

  The light that fell across it didn’t scatter.

  It settled into the seams, cyan and violet and sulfur-gold, like the labyrinth was holding colour on purpose.

  The seams held colour a fraction too long, like it was watching the rain learn it.

  Isaac’s jaw buzz returned.

  Not pressure this time.

  A low vibration, like the air was holding a note it didn’t want him to hear.

  Zoya stared for a beat too long.

  Her mouth opened.

  Nothing came out.

  Then she found one word, and it sounded worse than swearing.

  “Why.”

  On the horizon, where it had been for weeks like an accusation, the upside-down crystal pyramid hung in the Core-sky like a fixed curse.

  Rain veiled it.

  It didn’t care.

  Tetley’s ears shifted.

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  A fraction.

  He angled toward the labyrinth’s outer ribs like he’d heard a name.

  His tail tips fanned once, small and precise, and then he started walking, not prowling, not wandering, moving like a guided key.

  Isaac stared at the nearest entrance cut into the labyrinth’s outer ribs and felt his breath try to change, like his body wanted to go quieter.

  “Okay,” he said.

  Not agreement.

  Survival.

  Zoya blinked hard and started walking the basin rim, keeping high ground, keeping distance, staying on the verge of it like the verge was a promise.

  “We hold the edge,” she said, quieter than before, like she was talking to her own lungs. “Around. Not in.”

  Isaac followed because she was right.

  Because smart people tried not to fight bosses in pantries, and smart people didn’t volunteer for systems they didn’t understand.

  Tetley moved ahead of them.

  Silent.

  Certain.

  The closer they stayed to the labyrinth’s boundary, the more the reflections started doing little edits.

  A wet patch of hard-glass held Zoya’s reflection a heartbeat too long.

  A glint moved in the wrong direction.

  A shadow landed half a beat late.

  Isaac’s left wing twitched once, involuntary, like the mis-timed shadow had tugged a tendon the wrong way.

  His bad plates shifted with him and didn’t settle clean.

  A plate tried to seat, missed, clicked against bone the wrong way.

  Cold air found the exposed lane and he bit down hard enough to keep his breath from hissing.

  He kept walking like nothing had happened, but his balance stayed off, the bad wing tugging him a fraction toward the labyrinth as if it wanted to be closer to the rules.

  Zoya started talking fast, not to be funny, not to be brave, but to keep herself functional.

  “See the grooves?”

  Isaac’s eyes tracked the knife-slit channels, the way the rain had been given a route.

  “Drainage,” he said.

  “No,” Zoya said. “Law.”

  Isaac kept his eyes forward.

  He let her talk.

  It was armour.

  It was also data.

  And somewhere in the walls, something that had been a fingertip ridge yesterday looked a little too much like a knuckle.

  Zoya blinked hard as if she could reset the picture.

  “That seam.”

  She nodded at a mouth-shape crack in the glass, a line that hadn’t been open when she first clocked it.

  Now it held a sliver of shadow.

  Not depth.

  Just the suggestion of it.

  “A spear haft.”

  She angled her gaze down the wall.

  A piece of wood or bone, fused into the crystal like the wall had caught it mid-throw.

  It had been flush.

  Now it sat angled.

  Like something inside had leaned on it.

  Like it was being pulled free by millimetres.

  A tool head.

  Stone, maybe.

  It looked embedded.

  It now looked braced.

  Ready.

  Zoya swallowed.

  Her voice shifted.

  Less wonder.

  More town-math.

  “If you build something to catch people…”

  She nodded at the labyrinth like it was a plan drawn by a sadist.

  “…you don’t build walls.”

  “You build choices.”

  “You build routes that feel like yours.”

  “That’s why Brimwick has three market lanes and only one true exit,” she said. “So newcomers think they picked the right road.”

  She kept walking.

  Fast.

  Like motion could outrun implications.

  “You punish hesitation.”

  “Not movement.”

  Isaac’s jaw buzz shifted again when they doubled back around a jut of badlands.

  Not because they were closer.

  Because their route changed.

  The note in his wings sharpened like the labyrinth had listened and decided it preferred a different answer.

  Zoya felt it too, not as resonance, but as the world tightening around her words.

  She stopped joking entirely.

  “Are they inching out?”

  She said it like a ridiculous thought, like she wanted Isaac to laugh and snap it in half.

  He didn’t.

  The wall-figures stayed still.

  Except for the tiny changes that were now easier to see because she’d named them.

  Zoya’s eyes went hard.

  “So.”

  “Here’s the ugly version.”

  She pointed her chin along the curve of the rim.

  “If we keep walking the edge wrong…”

  “…it rebalances.”

  “It doesn’t need to chase us.”

  “It just needs to close exits.”

  She didn’t look at Isaac when she said the next part.

  Like it was too personal.

  Like Brimwick lived under her tongue and she hated that it did.

  “That’s how you run a town too.”

  A pause.

  Rain ate the space.

  “Except the town pretends it’s mercy.”

  Isaac felt the air-note change again.

  Not sound.

  A steadiness in the world’s hum.

  The kind of steadiness that meant the system had clocked their pattern.

  He kept his face blank.

  He kept moving.

  He refused to give the labyrinth the satisfaction of seeing him flinch.

  Zoya wiped rain off her mouth with the back of her wrist.

  She stared at the pyramid in the far distance, that needle of timber and crystal they’d been avoiding since it first became legible.

  A known curse.

  A visible threat.

  Something you could hate honestly.

  She made the rational pivot out loud like she was issuing an order to herself.

  “Forget this.”

  She breathed in.

  Forced it steady.

  “We go to the pyramid.”

  “Better enemy,” Isaac said.

  Zoya didn’t smile.

  She just nodded once, like she was taking what she could get.

  Isaac wanted to agree.

  He wanted to want it.

  His body leaned toward the labyrinth anyway.

  Not melodrama.

  No longing.

  A pull in bone.

  A vector.

  His wing plates tightened as if they preferred the geometry.

  As if the labyrinth and his wings shared a language his mind was not invited to speak.

  He hated that.

  He hated it more because it was physical.

  Because he could not argue with his own joints.

  Tetley stopped listening to them.

  He did not look back for permission.

  He simply walked down the slope and crossed the invisible boundary like it was his own threshold.

  Zoya’s voice snapped.

  “Tetley.”

  Her tone was not calling.

  It was a leash thrown too late.

  Isaac moved fast enough that the exposed wing-skin screamed under rain.

  He caught up to the boundary in three steps and stopped hard.

  Because the air changed.

  Not seam-mist pressure.

  Not Breathmark pop.

  Something cleaner.

  Zoya’s mouth tightened.

  “Line.”

  Isaac stared at it.

  “Rule.”

  “Yeah,” she said. “Their rule.”

  “Tetley.”

  Isaac didn’t shout.

  He didn’t need to.

  The cat froze at the threshold.

  He turned his head.

  Looked over his shoulder.

  And meowed once.

  Not scared.

  Not pleading.

  Annoyed.

  Like they were failing something obvious.

  The moment Tetley crossed, the labyrinth answered in tiny, formal ways.

  The reflections in the nearby hard-glass settled.

  Not perfect.

  Consistent.

  The air-note steadied, like the world exhaled and decided on a pitch.

  The wall-figures went still again.

  Not calmer.

  Worse.

  Zoya watched the cat like he’d just been handed a stamp.

  “It likes him,” she said, quiet.

  “Or it recognizes him,” Isaac said.

  “Same problem.”

  They couldn’t abandon him.

  Zoya would not abandon Isaac.

  Isaac would not abandon Tetley.

  So they followed.

  The first corridor inside did not feel like entering a place.

  It felt like stepping into a mechanism.

  The hard-glass walls were not straight.

  They were almost straight.

  Angles that were off by a fraction, just enough to make the eye do work.

  Floors that caught reflections and returned them with a delay.

  Isaac stepped.

  His reflection finished the step a heartbeat later.

  He froze.

  His reflection froze.

  A moment.

  Then it started moving again before he did.

  “It’s late,” Isaac said.

  Zoya didn’t look at him.

  She didn’t look at it.

  “Don’t look at it,” she said anyway, like the words were a ward.

  Zoya looked at the walls.

  The trophies.

  Weapons embedded everywhere.

  Spears.

  Flint blades.

  Bone needles.

  Corded tools.

  Hooks and scrapers.

  Broken linehooks.

  Snapped bracer plates fused into the glass like someone had tried to claw their way out and failed.

  Not offerings.

  Evidence.

  Records of attempts.

  Sound didn’t echo.

  Sometimes a footstep landed and the sound arrived from behind them, the corridor playing it back late.

  Sometimes the step made no sound at all.

  Isaac’s teeth buzzed at the edits.

  His wings tightened reflexively, plates clicking softer than he wanted.

  Zoya flinched anyway.

  Not at the noise.

  At what it meant.

  They passed the first agony wall.

  Not a corner.

  A whole stretch.

  Humanoid forms fused into the hard-glass, stretched and half-melted as if the labyrinth had pulled them and then decided to keep them as architecture.

  Faces caught mid-agony.

  Faces caught mid-prayer.

  Faces caught mid-concentration.

  One had a pack half-swallowed into the wall.

  Cord petrified.

  A blade trapped mid-swing.

  Some of the gear looked old enough to be myth.

  Some of it looked recent.

  Not ancient at all.

  Zoya’s voice came back in fragments.

  Detail.

  Myth.

  Practical.

  Then Brimwick, on purpose.

  “You said you wanted the surface to make sense,” she said. “So listen.”

  Isaac’s eyes tracked the half-swallowed pack, a cord turned to glass, the way the wall had kept the tool but eaten the person.

  “If someone asks me up top,” he said, “who decides?”

  He didn’t dress it up.

  He didn’t make it brave.

  “I’m taking notes.”

  Zoya didn’t look at him, but she answered like she was teaching.

  “The Four Seats,” she said.

  She lifted her chin at a cluster of fused figures in the hard-glass, bodies angled like they’d been watching something instead of running.

  “In Brimwick, when they do a public judgement, there are always four who stand off to the side and whisper like it’s prayer,” she said.

  “Not the executioner. Not the speaker. Not the person dying.”

  “And you can tell which is which without hearing a word.”

  Isaac followed her gaze.

  “Who are they?” he asked.

  Zoya ticked them off like common tools.

  “Maera Vell. Rindkeeper.”

  Her voice stayed flat, but her eyes flicked, automatic, to an imagined hand.

  “Always has velvet stain under one thumbnail,” she said. “Or a peel strip tucked in a ledger fold.”

  “Stores. Rations. Who gets the jar when the shelves go thin.”

  “Orren Dask. Gatehand.”

  She nodded as if she could see a token in his palm.

  “Gate tokens stamped with a rind-vein pattern,” she said. “He’s the only one who carries the die that makes the stamp.”

  “Routes. Patrol timings. Who gets slowed. Who gets waved through.”

  “Selka Ruun. Bellwarden.”

  Zoya’s mouth tightened a fraction.

  “Her oath,” she said. “For strangers.”

  “She conducts the crowd with the same hand every time.”

  Her gaze snapped briefly to her own wrist.

  “That wrist has the rind cord.”

  “Funerals. Unity. What Brimwick is allowed to believe when the truth would split it.”

  “And Brenn Ivo.”

  She swallowed once.

  “Quietwarden.”

  “He keeps a tiny sealed rind jar on him,” she said. “For panic.”

  “Never uses it in public.”

  “Secrets,” she said. “Before they bleed.”

  Isaac breathed out slow.

  “Four people,” he said.

  “Four seats,” Zoya corrected.

  “And in public they stand in order,” she went on, sharp as a rule carved into wood.

  “Maera. Selka. Brenn. Orren.”

  “Stores. Story. Secrets. Gates.”

  “If that order breaks, Brimwick knows something is wrong before anyone says it.”

  Isaac’s jaw buzzed once, low, like the labyrinth liked structure.

  “And in judgement,” he asked, “what do they do?”

  Zoya glanced at the fused faces without letting her own face soften.

  “They throw the Rindward sign,” she said, like it tasted bitter.

  “Two fingers near the throat.”

  Breathe shallow.

  “Knuckle tap to the sternum.”

  Hold your core.

  “Palm down, slow press.”

  Wait. Don’t force.

  She didn’t perform it.

  She didn’t need to.

  Isaac nodded once, like he’d just stored it where he kept names and exits.

  “And who eats first?” he asked.

  Zoya’s answer didn’t hesitate.

  “Kids,” she said.

  “Injured.”

  “Workers that keep the pumps moving.”

  Her mouth tightened.

  “Then the rest.”

  “And who gets believed?” Isaac asked.

  Zoya looked back at the labyrinth wall like it was a plan.

  “Whoever already has a name people trust,” she said.

  “Whoever the town calls reliable.”

  A beat, clean and ugly.

  “Places like this and towns like mine do the same thing,” she said. “They decide who counts before you even open your mouth.”

  Her voice hardened, not with memory, with precision.

  “This is town math,” she said, like an insult you could sharpen.

  “This is a town that eats first.”

  Isaac didn’t answer.

  He watched Tetley.

  The cat paused at a fork.

  Not wandering.

  Listening.

  Tail tips fanned in small, precise pulses.

  The collar node stayed dark.

  No light.

  No signal.

  And yet Tetley chose a corridor that angled away from a mirrored seam in the floor where Isaac’s reflection had just started a step too early.

  Tetley didn’t even slow.

  He knew.

  Zoya clocked it instantly.

  “He’s not guessing.”

  Isaac kept his eyes on the cat.

  His jaw buzz tightened.

  “Neither are we.”

  Zoya’s breath hitched.

  Her humour tried to crawl up her throat.

  It died.

  “We are now.”

  They moved deeper.

  Corridors repeated with tiny differences, like the labyrinth was iterating solutions.

  A corner that should have been a corner was a fraction wider.

  A floor that should have reflected feet reflected faces instead, for half a heartbeat, then corrected.

  The air got colder.

  Not temperature.

  Intent.

  Set piece one came without announcement.

  A corridor glittered with weapons.

  Oriented.

  Spears half-thrown.

  Blades mid-swing.

  Everything angled down the corridor, like the record kept the direction of the attack as part of its language.

  Isaac saw it.

  He felt it.

  He also saw a spear embedded at chest height with a hand fused around it.

  Fingers locked.

  Knuckles pale under glass.

  Like the thrower got taken mid-throw.

  His stomach turned.

  Zoya’s reflection lifted a weapon.

  Zoya didn’t.

  She froze so hard the rain drip on her cheek looked like it paused to watch.

  Isaac grabbed her bracer wrist.

  Not hard.

  Certain.

  “Don’t.”

  Zoya blinked.

  Her reflection blinked late.

  Then snapped back into alignment like it had been corrected.

  They moved on.

  Set piece two hit like a choir with no sound.

  A wall of bodies.

  Too many.

  A repeating wave of humanoid forms fused into crystal, layered like a tide caught mid-crash.

  Not a few failed adventurers.

  Not a team.

  Not even a generation.

  A mechanism that had been fed attempts until it learned what desperation looked like in every posture.

  One form had rope fragments.

  Another had a linehook.

  Another had bracer-like shards.

  Recent.

  Zoya’s voice cracked once.

  Not grief.

  Recognition.

  She covered it with anger immediately.

  “This is not hunting bodies.”

  Her mouth trembled.

  She forced it steady.

  “This is hunting choices.”

  Isaac’s wings tightened.

  The plates clicked.

  A little louder than he wanted.

  Tetley kept walking as if the choir wall was a fence he’d stepped past a thousand times.

  Set piece three tried to kill them politely.

  A corridor where reflections diverged.

  Isaac stepped right.

  His reflection stepped left.

  A seam in the floor brightened.

  A pressure hum rose, not sound, but a vibration in the bone.

  His wing plates answered with a thin note that made his spine go rigid.

  Tetley went first.

  No hesitation.

  The corridor accepted him.

  Isaac and Zoya followed in Tetley’s wake and their reflections matched the cat more than they matched themselves, like Tetley’s presence forced the system into a tolerant state.

  Like he was a key.

  Or at least something the labyrinth recognized as permitted.

  They turned a final corner and the maze stopped feeling like a maze.

  The corridors began to funnel.

  The walls stopped looking like trophies.

  They started looking composed.

  Ceremonial.

  As if the labyrinth had been ugly on purpose, to teach you what it did to people, and now it wanted you to understand what it worshipped.

  It felt less like walking through a place and more like being routed.

  Toward an altar.

  They entered the center space and Isaac’s breath caught.

  Not because it was vast.

  Because it was deliberate.

  An open chamber, sized like a decision.

  In the middle stood a freestanding wooden doorway.

  Zoya’s voice went flat.

  “Wood.”

  A beat.

  “That’s not allowed.”

  No frame attached to anything.

  No wall.

  No support.

  Just standing.

  The grain looked touched a million times.

  Not carved.

  Handled.

  Worn smooth by palms.

  Around it, a ring of crystalline tapestry-sculptures rose in a halo.

  Frozen fabric made of hard-glass and crystal, layered like billow caught mid-motion.

  They moved by millimetres.

  Slow-time breathing.

  Not art.

  Containment.

  The kind of beauty that existed because it had a job.

  Isaac’s wings tightened so hard his shoulder joints burned.

  A surface in the tapestry-halo flexed.

  Not shifting like crystal.

  Like a lid settling.

  A blink, implied.

  Then real.

  Reality broke quietly.

  Zoya’s humour did not show up.

  Not even a scrap.

  She stared at the doorway like it was the cleanest threat in the room.

  Her mouth opened.

  Closed.

  When she spoke, it was ugly and practical.

  “We are not meant to be here.”

  Isaac didn’t answer.

  He couldn’t.

  Because the resonance in his wings spiked.

  Not pressure.

  A note.

  It ran through the crystal plates like a tuning fork finding its match, and the buzzing stopped everywhere else, leaving only that single tone drilling clean through his teeth.

  His shardmail prickled under the skin like static looking for a seam to crawl into.

  Without him choosing it, a thin flare of shardmail climbed his throat, and his breath went shallow on its own, the way it did when the Core wanted him quiet.