The emergency alert screamed across the avenue three seconds before the sky opened.
Every phone in the street lit up red at once.
EMERGENCY PROTOCOL. POSSIBLE DUNGEON INSTABILITY. EVACUATE THE AREA IMMEDIATELY.
People looked down.
Looked up.
And for one stupid second, nobody moved.
Then the air above the intersection folded in on itself.
It did not look like a door.
It looked like the city had been pinched open by something stronger than physics. A black oval spread between the traffic lights, too smooth, too clean, pale light crawling around the edges like the world was trying and failing to seal it shut.
Heat rolled down the street.
Glass trembled.
Someone screamed.
That broke the spell.
Cars lurched. Horns went wild. A delivery scooter clipped a taxi and spun out. A woman dropped her groceries and stared at oranges rolling into the gutter like that was still a useful problem.
Aiden stepped back onto the curb before the first car jumped the lane.
He had seen dungeon footage all his life. Everyone had. Safety videos. News reports. Shaky recordings from people who should have been running instead of filming.
None of it felt like this.
The real thing was too quiet at the center.
Too deliberate.
Like the world had made room for something that had no intention of leaving.
Sirens started a second later.
Now people ran.
They ran the way crowds always did when panic got there first. In all directions. Into traffic. Into each other. A bus braked so hard its rear fishtailed across two lanes. A storefront window blew out to Aiden's left.
He pulled out his phone.
One missed message.
Iris.
If eggs are over twelve thousand won again, I'm reporting this district for organized theft.
Sent fourteen minutes earlier.
He had almost answered.
He had not.
That tiny failure irritated him now with absurd force.
He hit call.
Once.
Twice.
On the third ring, the street beneath the gate convulsed.
The asphalt split with a sound like metal tearing underwater. A crack shot across the intersection. Paint, drains, broken stone, all of it ripped open in one line. A traffic light dropped and flattened the hood of a sedan.
People nearest the center went down screaming.
The call connected.
"Aiden?"
Her voice came through thin with office static. Not afraid yet. Annoyed. Confused. Half a step from becoming afraid.
"Where are you?" he asked.
"At work. Why does the building alarm sound like it's having a breakdown?"
He looked up.
Two blocks ahead, the mirrored office tower reflected the black opening over the avenue like rot spreading across glass. Iris had pointed that building out enough times for him to remember exactly how she described it.
Worst elevator in Seoul. Smells like burnt coffee and unpaid overtime.
"What floor?" he said.
"Seven. Why?"
The ground shook again.
Something came through.
It hit the street on too many limbs and skidded through broken asphalt in a spray of dust and black fluid. Lean body. Wrong joints. Spine too high, then too low. A skull that looked unfinished.
The crowd froze just long enough to understand what it was.
Then fear got there properly.
The avenue detonated.
"Aiden?" Iris again, sharper now. "What the hell is happening?"
He cut away from the center before the stampede reached him full force. A man in a suit slammed into his shoulder and kept running. Someone else fell in the crosswalk and disappeared behind a crush of legs.
"Listen to me," Aiden said. "Do not go outside."
"What?"
"If you can get downstairs, do it. If you can't, get away from the windows and find an interior wall."
"You're not funny."
"I'm not joking."
"Aiden."
That one word carried the change in her faster than panic would have.
She believed him now.
He reached the mouth of a side street and looked back.
The first monster was no longer alone.
Another shape dropped from the gate and landed on the roof of the bus. Metal folded. The windshield burst outward. Somebody inside was still pounding against the glass. The thing crouched low and turned its head as if panic carried better than sound.
Association drones were already in the air.
Three silver units shot over the street, broadcasting the same cold voice again and again.
"Emergency Protocol active. Leave the district immediately. Move away from the breach zone. Association response units are en route. Do not engage. Do not stop. Do not look back."
Too late.
Aiden flattened himself against the wall as another wave of people tore down the side street. Some were crying. Some were bleeding already. Most had that stunned blankness people wore when their bodies had started running before their minds caught up.
Iris was still on the line.
He could hear her office now. Chairs scraping. Someone swearing. A fire alarm whining in broken pulses.
"They told us to stay calm," she said. "No one here is calm."
"Can you get to the stairwell?"
"Maybe. Wait."
Her voice muffled. A door opened. Somebody near her said something too fast to catch.
Then her breathing changed.
"The corridor is packed," she said. "Everyone's trying to go down at once."
Then, lower, because even frightened she still had enough of herself left to do this to him:
"You were right. Happy?"
It should have helped.
It did the opposite.
Of course they were packed.
Panic loved procedure. Give enough terrified people one legal route and the route became the trap.
Across the avenue, the mirrored building lost six windows on the seventh floor.
Not shattered.
Punched inward.
Once.
Twice.
Three times.
Then the glass let go and poured into the street.
Aiden stopped cold.
Seventh floor.
"Iris."
Nothing.
"Iris."
Static bit at his ear.
Then her voice came back small enough to drop something heavy through his ribs.
"Something's here."
Not screamed.
Whispered.
That was worse.
A police vehicle slid into the side street behind him, speakers blaring evacuation orders nobody needed translated. Two officers got out and started shouting at the crowd. One look at the avenue and they started shouting louder. Neither of them looked like they believed in their own authority anymore.
Somebody crashed into Aiden from behind and nearly knocked the phone from his hand. An older man kept running without turning around. That was the shape of the street now. No malice. No morality. Just impact.
"Which stairwell?" Aiden asked.
"East side. I think. I don't know. Aiden, I can't see-"
Metal tore somewhere near her.
Somebody screamed.
He was already moving.
He cut back toward the main avenue against the flow. Shoulders hammered into him from both sides. Someone grabbed his sleeve and yelled that he was going the wrong way. He tore free. Under a pharmacy awning, a little girl was crying so hard she couldn't breathe. Her father snatched her up just before the crowd flattened the space where she had been standing.
Everything narrowed.
Noise.
Angles.
Distance.
The gate over the street. The monsters in the road. The office tower two blocks ahead. The broken lanes between him and the only person in the district he would run toward on purpose.
The Association was still not here.
Not really.
Just drones. Sirens. Instructions.
The city was excellent at telling people what to do in the first minute of disaster.
Saving them was usually later.
If later came.
"Aiden," Iris said.
He ducked past a man with blood all over one sleeve and kept his eyes on the building.
"Stay where you are," he said.
This time she understood exactly what he meant.
"No."
He stepped over a fallen street sign.
"Too bad."
The line broke up.
Ahead of him, something moved behind the shattered windows of the seventh floor.
Aiden ran straight at it.