The Tower reset at midnight.
While they were still alive.
Jaehyuk felt it start in his teeth.
A thin vibration that turned into a ringing ache. The air on Floor 95 tasted like pennies and cold rain. The ground under his boots stuttered, not shaking, not moving, just skipping frames.
Somin grabbed his sleeve.
Her fingers were warm.
The world was not.
"Tell me that's not happening," she said.
Mira didn't look away from the corridor ahead.
"It's happening," Mira said.
The hallway in front of them flickered.
Stone became metal.
Metal became stone.
A torch became a strip light.
A strip light became darkness.
The Tower couldn't decide what it was.
Or it was deciding too fast.
A bracket notice tried to print.
It failed.
It printed again.
Half the words were missing.
[Midnight Reset: IN—]
Then nothing.
The sound of fighting behind them cut off.
Not because the enemies stopped.
Because sound stopped.
For one breath, the Tower muted the floor.
Jaehyuk looked back.
A Vanguard squad froze mid-step.
A raider's blade hung in the air like it forgot gravity.
Blood droplets stood still.
Then the Tower let the world go again.
Noise crashed back in.
Somin flinched.
Mira swore under her breath.
Jaehyuk swallowed.
Iteration 6 had said it like a warning.
The Tower was never built to keep people out.
It was built to keep something in.
"We keep moving," Jaehyuk said.
Somin stared at him. "Toward what?"
"Toward 100," Mira answered.
Her voice was calm.
Too calm.
It was the voice she used when she chose a direction and refused to die until she got there.
Jaehyuk's chest tightened.
He'd dragged people to floors like this before.
In other lives.
He couldn't remember the details.
But he could remember the feeling.
The Tower getting impatient.
The Tower leaning closer.
Like it wanted to see what they'd do.
A corridor opened.
Not a gate.
A service hall.
Metal panels.
Cold strip lights.
The infrastructure again.
Somin made a sound of disgust.
"I'm starting to hate hallways," she muttered.
Mira gave her a quick look. "Pick something else to hate."
"I can multitask," Somin snapped.
Jaehyuk almost smiled.
Almost.
Then the strip lights flickered.
And he smelled burnt wires.
The Tower's skin.
The hall was lined with doors.
Every door had a number.
Not floor numbers.
Not room numbers.
Counts.
1.
2.
3.
4.
5.
6.
7.
Jaehyuk stopped.
His pulse kicked.
Somin bumped into him.
"Why are you stopping?" she hissed.
Mira turned, sword up. "What is it?"
Jaehyuk pointed.
Door 6 was open.
A crack.
Just enough to leak light.
Grey light.
The color of the archive pages.
Somin stared. "Is that..."
"Iteration 6," Jaehyuk said.
Mira's eyes narrowed. "You know that how?"
Jaehyuk didn't answer.
Because he didn't want to.
Because saying it felt like putting his throat into a noose.
A noise came from inside door 6.
A soft scrape.
Like paper moving.
Like someone turning a page.
Somin lowered her voice. "Do we look?"
Mira's blade angled toward the crack. "We don't have time."
Jaehyuk stared at the crack.
Time.
The Tower had just reset time while they were alive.
It was bending rules.
It was making space.
It wanted them to look.
He hated that.
He moved on.
"We don't go in," Jaehyuk said.
Somin exhaled. "Thank you."
Mira didn't thank him.
She kept walking.
Door 7 was closed.
No crack.
No light.
But as Jaehyuk passed it, a bracket notice printed in the corner of his vision.
Small.
Private.
[Subject 7: ACTIVE]
Jaehyuk's mouth went dry.
Somin didn't see it.
Mira didn't react.
He kept walking.
The service hall ended at a gate.
Not a normal gate.
A frame of black metal in a stone corridor, like the Tower couldn't decide which style it wanted.
Above it, a number burned.
100.
The number wasn't carved.
It wasn't painted.
It was lit from inside the wall like a heartbeat.
Somin stared up. "That's..."
"A threshold," Mira said.
Jaehyuk stepped closer.
The air around the frame felt thick.
Like pressure before a deep dive.
He could hear his own heartbeat louder.
He could hear Somin swallow.
He could hear Mira's breathing, controlled and steady.
A bracket notice appeared.
[Gate: Floor 100]
[Purpose verification required]
Somin's eyes snapped to him.
"It asked you that in the chamber," she whispered.
Jaehyuk nodded.
Mira's voice was low. "It's asking again."
The notice changed.
[Purpose: END LOOP]
[Status: ACCEPTED]
Somin's mouth fell open.
"It accepted it," she said.
"Of course it did," Mira said. "It wants to see if you're lying."
Jaehyuk stared at the gate.
The Tower wasn't a ladder.
Not anymore.
It was a filter.
A selection machine.
It wasn't testing strength.
It was testing alignment.
Would you become useful.
Would you become integrated.
Would you become terminated.
A new line appeared.
[Selection track: REGRESSOR SEVEN]
[Next threshold: 150]
Somin's voice cracked. "Selection track?"
Jaehyuk's stomach dropped.
Floor 150.
Broker's line.
The vanishings.
The missing vendors.
The wrong rewards.
The infrastructure behind the walls.
The thing above.
Mira stared at the words.
Her face didn't change.
But her grip on the sword tightened.
"So that's it," Mira said. "It isn't just watching."
Jaehyuk nodded.
"It's building," he said.
Somin's voice shook with anger. "Building what?"
Jaehyuk looked at the gate.
He could smell cold metal.
He could taste ink.
He could feel the Tower's attention pressing into his skin.
"A key," Jaehyuk said.
Mira's eyes flicked to him. "A key for what?"
Jaehyuk didn't answer.
Because the gate answered.
The frame cracked open.
Not like a door.
Like a wound.
Light spilled out.
Not torchlight.
Not strip light.
Something older.
A dim gold that made his bones feel heavy.
A voice spoke from the other side.
Not the Tower.
Not brackets.
A real voice.
Human.
And it said his name.
"Jaehyuk."
Jaehyuk froze.
Somin grabbed his arm.
Mira shifted, blade up.
The voice spoke again.
Closer.
Certain.
"Yun Jaehyuk," it said. "Took you long enough."
A figure stepped out of the light.
Grey coat.
Not Vanguard grey.
Older.
The kind that looked like it had been worn for years and washed by regret.
Iteration 6.
He looked the same and different at once.
Same eyes.
Different weight behind them.
Somin's fingers dug into Jaehyuk's arm.
"That's..." she whispered.
"Yeah," Jaehyuk said.
Mira shifted, blade steady.
"You know him," Mira said.
Iteration 6 smiled.
It wasn't friendly.
It was tired.
"I know him," Iteration 6 said. "He doesn't know me. Not all the way."
Jaehyuk's mouth tasted like metal.
"You integrated," Jaehyuk said.
The words felt wrong in his mouth.
Like he was reciting a label.
Iteration 6's smile thinned.
"They wrote that down?" he asked.
Somin blinked. "Who is they?"
Iteration 6 looked past them.
At the corridor.
At the service hall.
At the doors with numbers.
"The Tower," he said. "Or what's wearing it."
Mira's eyes narrowed. "Stop talking in riddles."
Iteration 6 tilted his head.
"You think this is a dungeon," he said. "A tower. A trial."
He tapped the frame of the gate.
It hummed.
The sound made Jaehyuk's teeth ache again.
"This is a filter," Iteration 6 said. "And you're the thing passing through it."
Somin's voice went sharp. "We're people."
Iteration 6 looked at her.
His gaze held on her for a beat too long.
Then he nodded once.
"You're the part it can't afford to lose," he said.
Somin went still.
Mira stepped half a pace closer.
"Don't," Mira warned.
Iteration 6 raised his hands.
"I'm not here to take her," he said. "Not today."
Jaehyuk's eyes stayed on him.
"Why are you here then?" Jaehyuk asked.
Iteration 6's shoulders rose and fell.
"Because you reached 100," he said. "And if I don't speak now, the Tower speaks for me."
Somin swallowed.
"It already speaks," she whispered.
Iteration 6 nodded.
"Yes," he said. "And it lies by omission."
The floor behind them flickered again.
A reset tremor.
The sound of distant fighting warped, stretched, then snapped back.
Mira glanced over her shoulder.
"We don't have long," Mira said.
Iteration 6's gaze sharpened.
"Good," he replied. "Then listen fast."
He stepped closer to the frame.
The light behind him deepened.
Gold turning darker.
Like old sunlight through dirty water.
"Above 100, it stops pretending," Iteration 6 said. "Floors become infrastructure. Containment. Processing."
Somin's face tightened. "Processing what?"
Iteration 6 looked at Jaehyuk.
"You," he said.
Jaehyuk didn't flinch.
He'd expected it.
He just hated hearing it aloud.
Iteration 6 continued.
"The seven of you aren't a glitch," he said. "You're not lucky. You're not cursed. You're input."
Somin shook her head. "Seven of you?"
Mira's eyes narrowed. "Seven regressors."
Iteration 6 nodded.
"Counted," he said. "Tracked. Compared."
Jaehyuk's jaw tightened. "For what purpose?"
Iteration 6 exhaled.
His breath fogged in the gold light.
"To make a key," he said.
Jaehyuk felt the word settle in his ribs.
Key.
Not a person.
A key.
Somin's voice cracked. "Key to what?"
Iteration 6's eyes flicked up.
Up.
Not to the ceiling.
Beyond it.
"To what it's keeping above," he said.
The gate behind him pulsed.
The number 100 burned brighter.
A bracket notice appeared.
[Gate stability: DECLINING]
Mira's voice went hard. "You dragged us here just to say that?"
Iteration 6's smile returned, small and bitter.
"I dragged you here because if you keep climbing like this, you'll get shaped," he said. "And by the time you understand, it won't matter what you want."
Jaehyuk stared at him.
"You're shaped," Jaehyuk said.
Iteration 6 didn't deny it.
"Yes," he said. "That's why I'm useful."
Somin's nails dug into her staff.
"You're working with Vanguard," she said.
Iteration 6 glanced toward the distant war.
"Vanguard thinks they're buying the Tower," he said. "The Tower is using them as scaffolding."
Mira's eyes narrowed. "Dohyun."
"He wants control," Iteration 6 said. "The Tower wants compliance."
The gate flickered.
The gold light stuttered.
Jaehyuk felt his vision blur at the edges.
The reset again.
A half-step toward nonexistence.
Iteration 6 leaned closer.
"Listen," he said. "The Tower was never built to keep people out."
Jaehyuk held his gaze.
Iteration 6's voice dropped.
"It was built to keep something in," he finished.
Somin's breath hitched.
Mira's grip tightened.
Jaehyuk's chest went cold.
Because the way Iteration 6 said it wasn't theory.
It was memory.
A new notice flashed.
[Gate: Closing]
The light behind Iteration 6 surged.
The frame began to stitch itself shut.
Iteration 6 stepped back into the gold.
"See you at 150," he called.
Jaehyuk's voice cut through.
"What happens at 150?"
Iteration 6's smile was visible for one last beat.
"That's where people start vanishing on purpose," he said.
Then the gate snapped.
Stone.
Metal.
Silence.
Somin exhaled shakily.
Mira stared at the sealed frame.
Jaehyuk stared at the number 100 burning in the wall.
And the Tower, behind Jaehyuk's eyes, felt pleased.