152 - The River's Choice

Chapter 152 — The River's Choice

The change in the monsters' movement became obvious before the team had even finished breakfast.

For the previous two days, the creatures had followed the main river downstream in loose groups, occasionally stopping to feed or rest before continuing. Now their behavior had changed completely. Packs of river wolves were turning around, herbivorous monsters were leaving the banks, and several larger creatures that had previously avoided one another were moving in the same direction.

Upstream.

Toward the dungeon.

Camila watched the tracking display with a frown. "They're all moving back."

Subin studied the map while the others gathered around him. The creatures weren't simply returning to their original territories. Their paths were converging around a smaller tributary that eventually connected to the dungeon's outer region.

"They're being pushed," Jae-hyun said.

Subin shook his head. "Not pushed by something intelligent."

"Then what?"

"We'll find out."

The team moved immediately.

The tributary was narrower than the main river and passed through dense forest. They followed the monster tracks for nearly two hours before the first signs of trouble appeared. Trees had been broken along the banks, but there were no signs of a battle. The damage formed a continuous path, as though dozens of creatures had passed through in a hurry.

Then they heard the first roar.

The sound came from farther ahead.

Another answered it.

Then several more.

Min-seok tightened his grip on his axe. "That doesn't sound peaceful."

"It isn't," Subin said.

They increased their pace.

The forest suddenly opened into a wide clearing where the tributary divided around a rocky island.

Hundreds of monsters had gathered there.

The sight stopped everyone for a moment.

River wolves, horned beasts, reptiles, large birds, and several creatures the team had never encountered before were packed along both sides of the water. The stronger monsters occupied the higher ground while weaker creatures remained closer to the river.

But something was wrong.

The animals were not fighting each other.

They were trying to move past the same point.

At the center of the clearing stood a massive creature.

It was roughly ten meters long, with the body of a crocodile and the head of a horned reptile. Thick plates covered its back, while two curved horns extended from the sides of its skull.

[River Tyrant]

Level: 126

Rank: A+

The monster blocked the tributary.

Every time another creature tried to pass, it attacked.

A river wolf rushed forward.

The Tyrant struck it with its tail and sent it rolling across the ground.

A horned beast charged next.

The Tyrant drove it backward with a single bite.

The other monsters retreated.

Subin watched carefully.

"It isn't hunting them."

Yerin nodded. "It's blocking the river."

"Exactly."

Camila looked confused.

"Why would a monster stop everything from passing?"

Subin didn't answer.

The River Tyrant suddenly raised its head.

Its eyes locked onto the Awakeners.

The surrounding monsters became restless.

Min-seok stepped forward.

"Looks like we've been noticed."

The Tyrant charged.

The ground shook beneath its weight.

Subin moved first.

He crossed the distance before Min-seok could swing his axe and struck the monster's forehead with the flat of Simple Edge, redirecting its head away from the group rather than cutting it.

The impact forced the creature sideways.

It dug its claws into the earth and stopped.

Subin landed several meters away.

The Tyrant turned toward him.

This time, it attacked with intent.

Its jaws opened wide enough to swallow a human whole.

Subin stepped to the side as the jaws snapped shut and immediately cut across the creature's front leg. The sword penetrated the thick scales, but only shallowly.

The monster roared and swung its tail.

Subin ducked beneath it.

Before he could counter, the Tyrant twisted its body far faster than its size suggested and struck again.

Subin blocked.

The impact drove him backward several meters.

Min-seok rushed forward.

"Subin!"

"I'm fine."

The Tyrant charged again.

This time, Subin didn't retreat.

He moved toward it.

The creature's movements were powerful but predictable. Its size gave it enormous physical strength, but every attack required it to commit its entire body. Subin waited until the last possible moment before stepping into the gap between its jaws and shoulder.

His sword moved once.

A clean line appeared across the monster's armored neck.

The Tyrant stumbled.

Subin turned his body and delivered a second strike to the same location.

The armor broke.

The creature collapsed heavily beside the river.

For several seconds, nobody moved.

The surrounding monsters stared at the fallen A+ creature.

Then something unexpected happened.

Instead of fleeing, the creatures began moving toward the river.

Slowly at first.

Then in groups.

They crossed the area where the River Tyrant had stood and continued upstream.

Subin watched them.

"They were trying to get past it."

Yerin understood.

"The Tyrant wasn't protecting the dungeon."

"No."

"It was blocking their route."

Subin nodded.

"But why were they trying to return?"

Before anyone could answer, the river changed.

The water suddenly dropped several centimeters.

Then the entire tributary began flowing backward.

Ara stared.

"That's impossible."

Subin immediately turned toward the dungeon.

"No."

He understood.

The water wasn't actually reversing.

A huge amount of water was being drawn toward the dungeon.

The riverbed began cracking.

Trees along the banks tilted toward the center.

The monsters panicked.

For the first time since the team had arrived, they began running without any order.

Subin's expression changed.

"Everyone move to higher ground."

The command came immediately.

The team followed.

Within seconds, the tributary emptied.

Water rushed underground with tremendous force, exposing the riverbed.

Then the ground collapsed.

A massive section of earth disappeared beneath the forest.

The dungeon had opened a new underground channel.

But that wasn't the dangerous part.

The collapse had created a direct route toward the settlement they had passed the previous day.

Jae-hyun looked at the map.

"The settlement is downstream."

Subin nodded.

"How far?"

"Less than five kilometers."

Min-seok tightened his grip on his axe.

"If that channel fills again, the water will hit the town."

Subin looked at the exposed riverbed.

The monsters were already running away from it.

There wasn't much time.

"Then we stop it."

They moved.

The team reached the settlement within minutes.

The local authorities were already evacuating the remaining personnel, but several vehicles were still trapped near the river because the sudden ground movement had damaged the road.

Subin and Min-seok cleared the largest debris while Jae-hyun and Ethan helped move the vehicles.

Yerin organized the evacuation route with Camila.

Ara stayed near the river, watching the ground.

Then she shouted.

"Subin!"

He turned.

A crack had appeared beneath the road.

It was widening.

Subin immediately understood what was coming.

"Everyone away from the river!"

The ground collapsed.

A massive surge of water burst through the newly formed underground channel.

It wasn't a tsunami.

It was worse in a different way.

The water was being forced through a narrow opening beneath the settlement, creating a rapidly expanding flood.

Subin drew Simple Edge.

He couldn't stop the entire river.

But he didn't need to.

He only needed to change its direction.

He ran toward the breach.

Yerin shouted his name, but he continued.

The water struck the road.

Subin planted his feet.

His sword moved.

The first strike cut through the strongest current.

The second redirected the flow toward the abandoned drainage channel beside the settlement.

But the pressure was too great.

The ground beneath him began collapsing.

Subin pushed harder.

His sword intent spread through the surrounding space, not trying to overpower the water but forcing the incoming flow to follow the path he had created.

For several seconds, the result remained uncertain.

Then the river shifted.

The flood turned.

Instead of entering the settlement, the majority of the water rushed through the empty drainage channel and continued toward the lower valley.

The pressure suddenly dropped.

Subin released his stance.

Yerin reached him moments later.

"Are you hurt?"

"No."

She looked at the cracked ground beneath his feet.

"You could have been."

Subin looked toward the settlement.

"But they weren't."

Yerin stared at him for a moment before quietly nodding.

Behind them, the remaining team members arrived.

Min-seok looked at the redirected river.

"That was reckless."

Jae-hyun crossed his arms.

"Very."

Subin looked at them.

"You would've done the same."

Min-seok grinned.

"Probably."

The local authorities soon confirmed that everyone had been evacuated safely.

No civilian casualties were reported.

The settlement itself had suffered damage, but most buildings remained intact.

The team returned to the riverbank once the immediate danger had passed.

The monsters were gone.

The River Tyrant's body remained near the tributary.

Camila approached Subin.

"Why did they all return to the dungeon?"

Subin looked toward the distant forest.

"They weren't returning to the dungeon."

She waited.

"They were escaping."

"Escaping what?"

Subin pointed toward the newly collapsed riverbed.

"The river."

Everyone became silent.

The dungeon's expanding underground network had changed the course of the water. The monsters had sensed the change before humans had and attempted to move toward safer territory.

The River Tyrant had blocked their path.

What looked like a monster migration had actually been an evacuation.

Subin looked at the destroyed section of the river.

The dungeon wasn't ordering the creatures.

The creatures were simply adapting to changes humans were still struggling to notice.

That realization changed the mission completely.

Director Kang received the report that evening.

After hearing the full account, he remained silent for several seconds.

"So the monsters were trying to escape a dangerous environmental change."

"Yes."

"And we almost treated them as an approaching threat."

Subin nodded.

Director Kang looked at the damage reports.

"How many settlements are downstream?"

"Twenty-three within the broader river system."

Director Kang's expression hardened.

"Then this isn't a single-dungeon problem anymore."

Subin looked at the map.

"No."

He pointed toward the river.

"It's a regional one."

The international team remained in South America.

They would no longer simply track the monsters.

They would begin mapping the entire river system and identifying communities that could be affected by future changes.

That night, Subin stood outside the command center with Yerin.

The river flowed quietly in the distance.

"You saved that settlement today," she said.

Subin shook his head.

"The team did."

"You know what I mean."

He looked at her.

Yerin smiled.

"You always say you're just becoming stronger."

"I am."

"But today you used that strength for something other than yourself."

Subin was quiet.

Then he smiled.

"Maybe that's part of becoming stronger too."

Yerin looked at him for a moment before resting her head lightly against his shoulder.

Neither spoke for a while.

Far upstream, the river continued flowing through the newly altered landscape.

And somewhere beyond the forest, the dungeon continued expanding.

But now humanity had learned something important about the creatures living around it.

They weren't always coming toward humans to attack.

Sometimes, they were running from the same changes humans were trying to understand.

And that meant the next threat might not come from a monster at all.

It might come from the world itself.