The first sign was the silence.
Not the heavy quiet of the tower—Kairn was used to that now. The Tower of Teeth always muffled sound, like cloth over a mouth. This was different.
This was a silence with teeth.
Kairn sat with his back against the wall of the side-room, kids between him and Lysa, Fen half-dozing near the archway. The tower-mind had sunk back into the main chamber some time ago, leaving only a faint feeling of being watched.
For a while, it had been… almost calm.
Tam's fever had dropped a little more.
The children had eaten some of the stale dried meat Fen had scrounged from an old box.
Lysa had even managed a small, tired smile when Sia told a crooked joke about Fen's nose.
Now, that fragile calm cracked.
Kairn's new eye blinked.
His vision flickered.
The old tower walls, warm outlines, the kids' hearts, the faint glow of Lysa's ribs—everything stuttered for a heartbeat, then came back.
He frowned.
"Did you feel that?" he murmured.
Lysa looked up.
"Feel what?" she asked.
Fen rubbed his face.
"I felt myself almost sleeping," he muttered. "That's about it."
Kairn's ash-sight stretched, probing.
The wards in the tower still pulsed, thicker than before.
The Court's chain-threads outside still skated off them.
But something else had changed.
Near the base of the tower, beneath the plaza outside, a faint haze had appeared—a low mist that was neither warm nor cold. In ash-sight, it looked like… smeared glass, spreading slowly, seeping into cracks.
He hadn't seen it before.
He didn't like it.
He pushed himself to his feet.
Lysa's eyes followed him.
"What is it?" she asked.
"Something under us," he said. "New."
Fen sat up straighter.
"New good or new bad?" he asked.
"Wrong," Kairn said simply.
The air in the room felt thicker.
His hearing dulled.
Lysa's whisper seemed further away than it should.
"Maybe it's the tower-mind doing something," she said.
As if summoned, the tower-mind's presence stirred.
The ragged, long-fingered figure appeared in the side-room's entrance without any sound of footsteps, shadow bleeding off its edges.
"No," it whispered. "Not me."
Its head tilted, bone-pale fingers flexing.
"The deep mold wakes," it said. "Too much song. Too much chain-bite. You shook the bones. Something old stirs to feed."
Kairn's jaw tightened.
"You knew this could happen?" he asked.
"In theory," it said. "I have not felt it in… long. Long before the King. Before the sky-cage. Before leeches. It slept on city memories. Now it smells fresh cracks."
Lysa's hand tightened on Tam's shoulder.
"What is "it"?" she asked.
The tower-mind's not-face turned toward her.
"Hungry ash," it said. "A parasite on stories. A mold on minds. It feeds on pain and echo, on unanchored memory. When people scream and remember, it drinks. When they forget, it burrows deeper."
Fen's lips thinned.
"Fantastic," he said. "So we found a haunt that eats thoughts."
Kairn's ash eye focused on the haze under the tower.
It had spread further, tendrils creeping up through hairline cracks in the stone, sliding along old magic like oil up a rope.
He watched as a thin thread slipped through a barely-visible gap in the floor of the main chamber, coiling like smoke.
The hanging things above shivered.
One dropped from the ceiling with a soft thump, limbs twitching.
It lay still.
The rest pulled back from the mist, hissing silently.
"They don't like it," Lysa whispered.
"They remember," the tower-mind murmured. "Once, it almost ate them too."
"You're wards," Kairn said. "Can't you hold it?"
"For a while," it said. "But it is not a chain. It is a rot. Fire and stone do not bind rot the same. I can slow it. Not stop it."
Kairn's eye flickered again.
For a moment, the room blurred and shifted.
He saw the tower as it had been—full, lit with lanterns, people moving, voices, laughter, shouting. Then it snapped back to ashes and cracked stone.
He clenched his jaw.
"It's already touching me," he said.
"Yes," the tower-mind said. "You burn bright. It likes bright. It will crawl through your new eye into your mark, into your Brand. It will taste the King's song and my wards and think it found a feast."
"What happens if it does?" Fen asked.
The tower-mind was quiet for a long moment.
"Then you crack," it said. "You lose pieces in the wrong order. You forget why you bite. You remember the wrong chains. You attack the wrong throats. Useful to the rot. Useless to me."
Lysa's breath hissed in.
"No," she said. "Not again."
Kairn looked at her.
She stared back, eyes fierce.
"You already lost yourself once," she said. "In the mine, when they turned you. You clawed back. I'm not watching you vanish in your own head."
He almost said she might not get a choice.
He didn't.
His ash eye flicked to the children.
Mar's fear burned.
Sia was pale, eyes darting, trying not to show she was shaking.
Tam slept, unaware.
"We leave," Kairn said. "Now. Before it spreads."
The tower-mind shook its head, the ragged hood swaying.
"Too late," it whispered.
It raised one long finger.
Kairn's ash-sight followed its gesture.
The haze had already reached the tower walls at multiple points, seeping in. Thin tendrils slid down from the main chamber into side corridors, into broken rooms.
Outside, the plaza was no longer clear.
A low, shimmering mist crawled across it, almost invisible in normal sight, obvious in ash-sight—like a second layer of ash that moved with thought, not wind.
"If you step out, it will be there too," the tower-mind said. "It woke in my bones. It spread in the city. To leave, you must cross it anyway. Here, at least, I can… argue with it."
"Argue?" Fen asked.
"Push," it said. "Bargain. Trade. I am old. It is old. We remember the same stones in different ways."
Kairn's vision flickered again.
He saw not the room but a different one, for a heartbeat.
A kitchen.
A long table.
Lysa, younger, laughing with a dark-haired woman as they kneaded bread.
Then it vanished.
He sucked in a breath.
"Did you see that?" he asked.
"No," Fen said.
Lysa had gone utterly still.
"Lys?" he said.
Her eyes were wide.
Her hands shook.
"That was my mother," she whispered.
Her voice broke on the last word.
Kairn's throat tightened.
The tower-mind made a low sound.
"It tickles already," it said. "Pulling on old threads. The more you feel, the more it eats."
"How do we stop it?" Kairn asked.
"You don't," it said. "Not fully. You survive around it. You anchor. You make your minds heavy and your memories held, not drifting. It likes loose things."
"Anchor how?" Fen demanded.
The tower-mind's hood turned toward Lysa.
"The ribs-girl knows," it said.
She blinked.
"What?" she said.
"You carry an old rhythm," it whispered. "In bone and breath. A pattern from before the King, before his chains. Your people made songs to walk through ash storms. To keep minds from blowing away. You used them as games. Hums. You thought them nothing."
Lysa's face drained of color.
She looked like someone had scraped open something she'd buried deep.
"How do you know that?" she whispered.
"I remember this city," the tower-mind said. "I remember all who passed, who sang, who died. Your grandmother stood in a storm once, here, and sang until her throat bled to keep three children from walking into the sky. The ash heard. So did I."
Kairn stared.
"You never mentioned that," he said softly.
Lysa swallowed.
"I… thought it was just a story," she said. "When I was small, during storms, they'd make us sit in a circle, hold hands, and hum a pattern. Not words. Just… beats. My father said it helped. My mother said it was superstition. In the mine, I couldn't stand humming. It reminded me of… them. So I stopped."
Her eyes shone.
Now the tower and the thing under it wanted her to sing again.
"Can it help?" Kairn asked.
The tower-mind's voice was solemn.
"Yes," it said. "Not as a chain. As a line. A rhythm. The rot feeds on scattered thoughts, on jagged echoes. A steady beat makes fewer cracks. If you hold the pattern and walk through the whispers, you keep more of yourself."
"And you?" Lysa asked.
"I will push, while you bind," it said. "I will press my wards against its mist whenever it reaches here. But I am a place. Not a person. It is easier to eat stone than song."
Fen blew out a breath.
"So we have a mind-rot ash-mold trying to move into our brains, and the only counter is Lysa humming a grandma storm-song while the haunted tower argues philosophy with it," he said. "Great. Perfect. Absolutely normal day."
Kairn's ash eye flickered again.
This time, the vision was the mine.
Chains.
Dark.
Men and women huddled.
Whips.
The Warden's voice.
He smelled the damp rot of the pens.
He heard a child sobbing.
He felt his human heart hammered.
"Stop," he snarled.
The vision snapped.
His head throbbed.
A thin trickle of blood ran from his nose.
Lysa grabbed his arm.
"Hey," she said. "Stay here. With me."
Her fingers dug into his burned flesh.
He focused on that.
On the warmth.
On the pain that was now.
Not then.
"I'm here," he said.
"For now," the tower-mind murmured.
Kairn glared at it.
"You said we anchor," he said. "How?"
Lysa took a shaky breath.
She closed her eyes.
"When I was little," she said, voice barely above a whisper, "my grandmother made us sit with our backs against the stove. The storm would scream outside. The ash would hit the shutters. She would tap my wrist and say, "Count, little rib. Not numbers. Beats. Listen to your heart and the house and my hands. Make them one.""
Her fingers found Kairn's wrist.
She tapped.
Soft.
Steady.
Da-dum. Da-dum. Da-dum.
"Like this," she said. "You match it. Inside. No matter what you hear. No matter what you remember. You match this."
Mar watched, eyes huge.
Sia swallowed, then slid closer and grabbed Lysa's other hand.
"Show me," she whispered.
Lysa took Sia's wrist too.
She tapped the same beat.
"Fen," Kairn said.
"Hm?" Fen replied.
His normal humor was gone.
His face was serious.
"Give her your wrist," Kairn said.
Fen hesitated the briefest moment.
Then he stuck his hand out.
"Don't you dare make me hold hands in a circle and chant," he said. "I have a reputation."
"Shut up and breathe," Lysa said.
She took his wrist and tapped.
Da-dum.
Da-dum.
Da-dum.
Kairn closed his eyes.
He let his own heartbeat fall into that pattern.
He felt his ash eye itch.
He wanted to look at everything.
Every thread.
Every mist.
He forced it to focus on the three pulses she tapped.
His own.
Hers.
The children's.
The tower-mind's presence pulsed too, oddly—slow and deep, like a buried drum.
The rot-mist rose.
Kairn felt it before he saw it.
A cold pressure against the wards.
A whispering at the edge of hearing.
Like many voices speaking at once, just below words.
His ash-sight flared.
He saw the haze seep under the doorways and through cracks in the walls of the tower, sliding along the floor like a low fog. It reached the main chamber, swirled around the central depression, then crept toward the side-room.
The hanging things screeched silently, backing away further into upper cracks.
The tower-mind moved to the archway, its ragged form spreading, fingers scribing glowing lines in the air.
Old magic flared, a faint reddish outline at the threshold.
The mist hit it and recoiled.
For a moment.
Then it pressed again, flowing sideways, testing for gaps.
The whispering got louder.
Kairn heard his own voice.
"It's your fault," it said.
He gritted his teeth.
The voice shifted.
The Warden.
"You think killing me matters?" it hissed.
Then: Lysa's mother, from that brief flash.
"Kairn," she said. "You left them."
Then his own mother, or what his memory made of her.
"You weren't enough," she whispered. "You never were."
His fingers dug into stone.
Lysa's taps went on.
Steady.
Da-dum.
Da-dum.
"Listen," she said, voice shaking but clear. "Not to them. To this. To me."
He latched onto the beat.
The whispers slid around it, greasy.
He saw them in ash-sight now too—a thin, shimmering field around each of them, probing for cracks.
The System flickered.
[ FOREIGN MENTAL INFLUENCE DETECTED ]
[ RESISTANCE: 23% (BASE) + 15% (WILL) + 10% (TOWER WARDS) + ?% (LYSA RHYTHM) ]
[ EFFECT: MEMORY DISTORTION / DRAIN – PARTIALLY RESISTED ]
The last line glitched.
Letters shimmered.
The System had never marked "Lysa rhythm" before.
Kairn almost laughed.
"Of course," he muttered.
"What?" Lysa asked.
"System likes your grandma," he said, strained.
The tower-mind murmured something in a language older than the Court, its fingers drawing more lines.
The wards brightened.
The mist swirled, frustrated.
A tendril slipped through a hairline crack in the arch and reached toward Kairn's feet.
His ash eye saw it as a ripple in the air.
He moved.
He stepped on it.
It felt like stepping on cold mud.
It clung and pulled.
Whispers surged up his leg.
"Stop," he snarled.
He called the Brand.
Ghost fire flared in his veins.
He pushed it down into his foot, into the contact point.
For a moment, gray-red light shot through the mist, burning a thin channel.
The rot shrieked.
Not in sound.
In sensation.
Kairn's head pounded.
The mist withdrew from his foot.
It coiled and reformed, thicker near the ceiling now, reaching for the cracks above instead.
"It learns," the tower-mind said. "You burn it, it avoids fire. It will try other doors. Eyes. Ears. Mouth."
Kairn's ash-sight flickered again.
For a heartbeat, he saw himself from outside—standing in the mine, chains on his wrists, eyes dull.
Then the tower chamber snapped back.
Lysa's hands never stopped.
Da-dum.
Da-dum.
Her own eyes were wet.
Kairn realized she was hearing things too.
"Lys," he said.
"What?" she whispered.
"You okay?" he asked.
"No," she said. "But I'm here."
That was enough.
Sia's small fingers dug into Lysa's sleeve.
Mar's jaw clenched so hard it might crack.
His eyes shone.
"The storm song," he whispered. "My father told me about it. In the low towns. During ash season."
Lysa gave a shaky laugh.
"See?" she said. "Not just my village."
"Less talk, more hum," Fen said through his teeth.
His usual jokes were gone, but he was still there, eyes squeezed shut, free hand tapping his own leg in time with Lysa's touch.
The mist pressed harder.
It found other cracks.
Thin streamers slid under the shelves, along the ceiling.
They didn't cross into the room fully yet.
The tower-mind's wards held them at the edges.
"This will not last forever," it said, voice taut. "I am strong here, but not infinite. The rot knows my shape. It will find thin spots."
"What does it want?" Kairn asked, breath rough.
"You," it said. "All of you. But mostly the bright one. Your Brand. Your chains. It has tasted the King's song through you. It wants to burrow into it and spread through his net. It does not know that will also kill you."
"Will it hurt him?" Kairn asked.
"Yes," it said. "Eventually. It would rot his song. But it would rot you first. And the world between."
Fen snorted weakly.
"So we're saving the King by not letting mind-mold eat our leech-boy," he said. "That's… ironic."
"I'm not doing it for him," Kairn said.
He focused on Lysa's beat.
His ash eye burned.
He narrowed its focus further, tightening his vision to just the room, just the people, just the wards.
Outside, the mist thickened.
Faces formed in it.
Not real.
Mouthless, eyeless, just hollows in the shifting ash, reflecting back whoever looked.
A child's face.
An old man.
The Warden.
Veyrath's cold eyes.
His own.
The tower-mind hissed.
"Do not look at them," it said. "They are bait. They are mirrors with teeth."
Kairn kept his ash-sight low.
He glimpsed enough to know.
He closed it off to the outer chamber as much as he could.
The System flickered again.
[ ASH-SIGHT EYE – OVERLOAD RISK ]
[ SUGGESTION: LIMIT FIELD OR TEMPORARILY DISABLE TO REDUCE ENTRY POINTS ]
He almost swore.
Disabling the new eye would blind him to the rot.
Leaving it open gave it more doors.
"Lysa," he said.
"Mm?" she answered.
"I need to close one eye," he said. "Your beat will have to be enough."
She laughed, a short, breathless sound.
"It was before you got your fancy ash-crystal," she said. "It will be again. Close it. Trust me."
He did.
He forced the ash eye shut.
Not the lid—anyone could do that.
He forced the connection to dim, to recede.
His perception of heat and threads dropped like a curtain.
The world went back to normal sight.
Dark.
He could still see shapes in low light, thanks to his other traits.
But the extra layer was gone.
The pressure on his mind eased just a fraction.
The mist whispered at the edge of his sense, frustrated.
Lysa's taps went on.
Da-dum.
Da-dum.
He breathed with it.
In.
Out.
Fen's voice, softer now, floated across the circle.
"So," he said. "How long do we do this before it gets bored?"
"Not bored," the tower-mind said. "It has waited centuries. It can wait more. It will probe until it finds someone alone in their head. Then it will bite."
"Alone?" Kairn asked.
"Unanchored," it said. "Sleeping. Or thinking too hard about one hurt."
Mar swallowed.
"So we… don't sleep?" he asked.
"For a while," Lysa said.
Kairn felt something shift in her grip.
The pattern she tapped changed slightly—not in rhythm, but in emphasis. A tiny syncopation at the end of every fourth beat. Enough to keep his mind from slipping into a trance.
She was good at this.
Better than she'd admitted.
"So what, am I… special?" she asked the tower-mind abruptly.
The entity's head tilted.
"Yes," it said. "Your line has walked ash storms for generations. You sang before the King. Your rhythm is not his. It is older. You call it a children's game. It is a spell."
Lysa's breath hitched.
"A spell," she repeated. "And you never told me, Grandma."
"She did," the tower-mind said. "You laughed. Children do. That is why ash eats some and not others."
"You can be smug later," Fen muttered. "Right now, direct your magical grandma-beat at the rot."
"I am," Lysa said.
She was.
Her shoulders shook, but her hands were steady.
Kairn couldn't see the rot as clearly now, but he felt its pressure shift, like waves hitting a rock in time with the beat and losing some force.
Minutes stretched.
Or hours.
Time blurred into pulse and breath.
Kairn's muscles cramped.
His burned arm throbbed.
His normal eye ached now too.
The tower-mind's voice came intermittently, chanting, pushing, holding the wards.
At some point, Tam woke and whimpered.
Sia hushed him, whispering the beat in his ear.
"Da-dum," she said. "Da-dum. Like that. Just think that."
He sniffled and nodded, eyes big.
Mar's head drooped once.
His wrist nearly slipped from Lysa's grip.
Kairn reached with his free hand and grabbed the boy's shoulder, squeezing.
"Stay," he said.
"I'm… trying," Mar whispered.
"I know," Kairn said.
The mist pressed again.
Then, slowly, something changed.
The pressure shifted.
Not away, but sideways.
The whispers grew fainter.
The tower-mind straightened a little.
"It found other cracks," it murmured. "Further out. Old bones. Empty houses. Less… interesting food. For now."
"For now," Fen echoed.
Kairn didn't relax.
He kept the beat.
Kept breathing with it.
After a while, the System blinked.
[ FOREIGN MENTAL INFLUENCE: RECEDING ]
[ ASH-SIGHT EYE – STRAIN: MODERATE → LOW ]
He risked opening the ash eye a sliver.
The mist was still in the city, threaded through streets and ruins.
But it had thinned around the tower, like fog burned back by weak sun.
The wards glowed a little brighter.
The tower-mind's form was more solid.
"You pushed it back," Kairn said.
"We," it corrected. "She anchored. You burned. I held. It is not gone. It will return when it scents enough pain. But it knows now this place is not easy food."
Lysa's hands finally stilled.
She slumped, exhausted.
Her face was ashen.
Sweat plastered hair to her forehead.
Kairn grabbed her before she could fall.
"Got you," he said.
She laughed weakly.
"Don't say "I'll try"," she muttered.
"I didn't," he said.
She smiled, small and tired.
Fen fell onto his back, staring at the ceiling.
"I hate this tower," he said. "And I love this tower. And I hate that I love this tower."
Mar and Sia sagged too, but their eyes were clearer.
Tam had fallen asleep again, breathing more evenly.
The tower-mind watched them for a long moment.
"You do well," it whispered to Lysa. "You could learn more. Old songs. Old beats. Make chains stumble."
She blinked.
"Me?" she said.
"Yes," it said. "The leech burns chains. The ribs-girl binds minds. Both hurt the King. Different teeth. Good."
Kairn looked at her.
She met his gaze, eyes widening a little as the meaning sank in.
She was not just someone he had to carry.
She was a pillar.
"The Court will not expect that," Kairn said.
"No," the tower-mind said. "They think only of blood and bone. They forget rhythm. That is their crack."
Fen let out a low whistle.
"Veyrath's going to be so mad when he finds out he's losing to grandma songs," he said.
Lysa snorted.
Her shoulders shook with a quiet laugh that almost turned into a sob.
Kairn squeezed her wrist.
"We rest," he said. "Then we eat. Then we plan. The King isn't our only problem anymore."
"No," the tower-mind said softly. "But you have more friends than you did yesterday."
Its long fingers pointed at Lysa.
"Hold your rhythm," it said. "When you walk out there, the rot will sniff again. The Choir will sing. The dragon will stir. The King will listen. Your beat will be the only straight line through all their songs."
"Some pressure," Fen said.
Lysa took a deep breath.
"Good," she said.
Her voice was steadier than Kairn felt.
"I'm tired of being the one who just gets dragged," she said. "If this is my thing, I'll use it."
Kairn's ash eye saw her heart flare a little brighter.
Prey didn't say things like that.
Teeth did.
He smiled.
"Then we show them," he said. "The King. The rot. Anyone else who thinks we're just pieces. We bite. We sing. We burn."
No one argued.
Outside, the ash that whispered slid away for now, looking for easier minds to chew.
Inside the Tower of Teeth, with a haunted ruin and a storm-singer girl on his side, Kairn felt something strange under the tiredness and pain.
Not hope.
Not yet.
Something like momentum.
Like the first step in a run he intended to finish with a throat in his hand.