The water decided for them.
It surged through the chamber door like something with intent, knee-high in seconds, cold enough to make Jaehyuk's legs go numb. The mirror was dark. Whatever his reflection had mouthed, whatever don't trust meant, it would have to wait.
"Out," he said. "Now."
Somin was already moving. Jisoo stumbled after her, left arm cradled against his chest despite the healing. The tunnel outside was half-submerged, blue moss dimming overhead, the bioluminescent glow flickering like a dying signal.
Jaehyuk ran the Broker's route in his head. Third chamber to exit. Straight tunnel, 200 meters. Right turn at the fungal cluster. Left at the carved arch. Then the ascent ramp to the surface gate.
Simple. He'd done it in his first life with his eyes closed.
The carved arch wasn't there.
He stopped so hard Somin crashed into his back.
"Why are we stopping in the murder water?"
"The arch is gone."
"What arch?"
"The one that should be right here." He pointed at a wall. Solid stone. No arch. No passage. Just wet rock gleaming under the dying moss.
In his first life, this turn had been a wide, open corridor. Carved stonework. Easy to find. Easy to follow.
The Tower had sealed it.
Jisoo looked between Jaehyuk and the wall. "We're lost?"
"No."
"That wall says yes."
"The wall is new."
Somin's staff light caught something. A hairline fracture running vertically through the stone, so thin you'd miss it at any angle except the one her light happened to hit. Fresh stone against old stone. A seam.
The Tower had bricked over the corridor. Recently. Possibly today.
Jaehyuk pressed his palm against the seam. Cold. Slightly damp. But the air on the other side... he could feel it. A draft. Faint. Warm. The corridor was still there. Just hidden.
The Broker's corrected route hadn't accounted for this.
Because the floor was still changing. Not once. Not a single adjustment. It was shifting around him in real time, like a living thing rearranging its insides.
Water climbed past his knees.
"Okay," he said. "New plan."
"Love new plans," Somin said. "Especially when we're drowning."
He closed his eyes. Ignored the route he'd memorized. Ignored the Broker's corrections. Ignored seven years of certainty.
Listened.
The water wasn't flowing equally. It moved faster on the left side of the tunnel, which meant the gradient sloped that direction. Downhill. Away from the exit. The exit was uphill. Which meant...
He opened his eyes and looked right. A side tunnel he'd dismissed on the way in. Narrow. Low ceiling. Not on any map he'd ever seen because it hadn't existed in his first life.
But the water was shallower there. The current was weaker. And the air coming from it was warm and dry.
Uphill.
"Right," he said.
"That tunnel looks like it eats people," Jisoo said.
"Most useful things do."
They went right.
The tunnel narrowed until Jaehyuk's shoulders scraped both walls. The water receded, ankle-deep, then gone. The blue moss vanished. Red light returned, that feverish glow from the stone itself.
And then the floor tried to kill them.
The ground dropped.
Not collapsed. Dropped. A clean section of stone, two meters wide, hinged downward like a trapdoor. In his first life, there had been a pressure plate trap in the main corridor. Center of the floor. Obvious once you knew. Step around it, keep moving.
The Tower had moved the trap. Same mechanism. Different location. Hidden in a tunnel that shouldn't exist, triggered by the third footstep on the fourth stone.
Jaehyuk's foot hit the fourth stone.
The ground swung open beneath him.
Shadow Step.
Three steps compressed to one. He threw himself forward, fingers catching the far edge of the pit. His body swung over darkness. Below, something scraped against stone. Something with weight.
Somin screamed his name.
His arms burned. Sixteen Strength was not enough for a one-arm hang. Not even close. His fingers slipped. One centimeter. Two.
"Jisoo," Somin said. "Grab him. GRAB HIM."
Hands caught his wrist. Jisoo's grip, shaky but real. The young man's dislocated shoulder, freshly healed, took Jaehyuk's full weight and held.
Jisoo's face went white with pain. But he held.
They pulled him up. All three of them collapsed on the far side of the pit, breathing hard, tangled together in a pile of sweat and relief.
"You said you knew this floor," Jisoo gasped.
"I knew the old floor. This isn't it."
"THAT SEEMS IMPORTANT."
"Yeah." Jaehyuk sat up. His hands were shaking. Not from fear. From the growing understanding that his greatest weapon was rusting in real time. "It is."
The tunnel continued past the pit. They moved carefully now. Jaehyuk read the environment instead of his memory. Checked the stone for fresh seams. Felt the air for temperature changes. Listened for the water's direction.
Old skills. Floor 80 skills. The kind of instincts you built when you'd been climbing long enough to know that the Tower was never finished remodeling.
A side chamber opened to their left. Small. Empty except for a supply cache half-buried in rubble. Jisoo reached for it.
"Wait," Jaehyuk said.
He crouched. Ran his fingers along the rubble. Warm stone on the left. Cool on the right. The temperature difference meant a vent behind the cool side. Vents meant gas. Gas meant the cache was bait.
"Skip it," he said.
"But the supplies..."
"Are attached to something that wants you to stop moving."
Jisoo looked at the cache. Looked at the cool stone. Pulled his hand back.
"How do you do that?" he asked. "Read the floor like it's talking to you?"
"It is talking," Jaehyuk said. "Most people just don't listen."
Somin gave him a look. "That sounded almost wise."
"Don't get used to it."
They kept moving. The tunnel narrowed again, then widened into a final stretch where the stone changed color. Grey to brown. Older rock. The original cavern wall, not Tower-built. Natural.
The exit was close. Jaehyuk could feel it in the air. Warmer. Drier. The staleness of the Lobby filtering through the gate ahead.
The tunnel opened into a chamber with an exit gate.
Daylight.
Somin made a sound that was half laugh, half sob. Jisoo sat down on the nearest rock and didn't move for thirty seconds.
Jaehyuk looked back at the tunnel. At the trap that had nearly swallowed him. At the sealed corridor and the shifted routes and the floor that had rearranged itself around his presence like a body rejecting a transplant.
Six floors, the Broker had said. Before the Tower stops being subtle.
This didn't feel subtle.
The gate hummed. They stepped through.
The Lobby was bright. Loud. Full of climbers trading stories about Floor 4 like it was a campfire adventure. The smell of fried food and healing incense. Normal. Painfully normal.
[Floor 4 Cleared — Time: 51 minutes 09 seconds]
[Rank: B]
B-rank. His worst clear so far. Because the floor he'd prepared for wasn't the floor he'd gotten.
Jisoo found them by the east wall vendors. His arm was sore but functional. He bowed, a real bow, the kind that came from somewhere deeper than manners.
"Thank you," he said. "Both of you."
"You held the rope," Jaehyuk said. "We're even."
"We're not. But I'll pretend we are." He straightened. "If you need me later. For anything. I owe you."
He nodded to Somin, who smiled, and walked into the Lobby crowd. A good man in a bad place. The Tower was full of them. Most didn't last.
Somin watched him go. "He'll be okay?"
"If he finds the right party."
"Like we found each other?"
"We didn't find each other. You talked at me until I surrendered."
"That's a love story on some floors."
He almost laughed. Almost.
A figure caught his eye. Across the Lobby, near the information boards. Shin Mira. She was leaning against a pillar with her sword across her back and the expression of someone who'd cleared Floor 4 without breaking stride.
She was looking at him.
Not at his rank. Not at his wounds. At him. The way she'd looked after the arena fight. Like she was solving a problem she hadn't been asked to solve.
She'd seen something. In the floor, or from outside it. She'd watched him adapt to the changed trap. She'd watched him read the environment instead of relying on the route.
And she'd understood what it meant.
He knew because she didn't ask a single question.
She just looked at him. Nodded once. And turned away.
That nod was worse than any interrogation.
Somin nudged his elbow. "She's warming up to you."
"She's deciding whether I'm useful."
"Same thing, with her."
A pair of white coats passed behind them. Vanguard. Walking with the casual purpose of people who owned wherever they stood. One of them spoke to the other, voice low but not low enough.
"Report to Dohyun. The Floor 1 anomaly. Yun Jaehyuk."
"What about him?"
"He's moving like someone who remembers."
The words hung in the air like smoke.
Jaehyuk didn't turn around. Didn't react. His hands stayed loose at his sides. His breathing didn't change.
But Somin heard it too. Her face went still.
"Jaehyuk," she whispered.
"I heard."
"They know."
"They suspect. There's a difference."
"For how long?"
He watched the white coats disappear into the crowd, carrying a sentence that would reach Kang Dohyun's ears before the hour was over.
"Not long enough," he said.