142

Chapter 142 — The Island That Was Growing

Morning arrived quietly over the Pacific observation camp, but the island in the distance looked completely different from the previous evening. The blue glow surrounding its coastline had intensified during the night, and several new crystal formations had appeared along the western shore. From the observation platform, the changes were visible even without mana detection equipment. What had been a relatively ordinary volcanic island only a few days earlier was slowly becoming something else.

Subin stood near the edge of the camp with his hands resting casually at his sides while he watched the island. Yerin joined him a few minutes later, carrying two cups of coffee. She handed one to him without saying anything. Subin accepted it, took a sip, and looked at her.

"You remembered."

"You always drink it without sugar."

Subin nodded. "Thanks."

Yerin leaned against the railing. "You were awake all night, weren't you?"

"Not all night."

"How long?"

"Most of it."

She sighed. "That's practically the same thing."

Subin didn't argue. His attention remained on the island. Something about the mana movement had changed during the night. It wasn't stronger in the way a monster became stronger. Instead, the flow had become smoother. The separate currents that had previously moved independently were gradually merging into a larger circulation pattern.

Yerin followed his gaze. "Something changed."

"Yes."

"What?"

"The flow became more efficient."

She looked toward the island again. "Is that dangerous?"

"Not immediately."

"That's not very reassuring."

Subin smiled slightly. "The problem isn't the current strength. It's what the efficiency allows the ecosystem to support."

Before Yerin could respond, the camp's alarm sounded.

Several researchers rushed toward the monitoring station.

Subin and Yerin followed.

The main display showed the island's latest readings. The mana density around the coastline had increased by nearly fourteen percent overnight, but the surprising part was the distribution. Instead of remaining concentrated around the dungeon entrance, the mana had spread through the entire island and into the surrounding ocean.

Kaia Moana stood beside the researchers, studying the data.

"The underwater flow has changed," she said. "It's no longer moving only toward the island."

Subin looked at the map.

"Where is it going?"

Kaia enlarged the oceanic readings.

Several mana currents were extending away from the island.

One moved east.

Another moved southwest.

A third traveled almost directly north.

Subin studied them for several seconds.

"They're not random."

Kaia nodded. "That's what I thought."

Min-seok entered the room, still adjusting his equipment. "What's happening?"

Ara followed him.

"The dungeon is expanding its mana circulation," Yerin explained.

Min-seok looked at the screen.

"How far?"

Kaia answered, "The northern current has already traveled almost thirty kilometers."

Min-seok's expression changed.

"Thirty?"

"And it's still moving."

Jae-hyun entered shortly afterward. He looked at the readings and immediately understood the seriousness of the situation.

"If those currents reach other ecosystems..."

Subin finished the thought. "They could introduce the dungeon's mana into them."

The room became quiet.

Director Kang appeared through the communication system.

"Can the flow be stopped?"

Subin looked at the map.

"We shouldn't try."

Min-seok frowned. "Why?"

"Because we don't know what happens if we interrupt it."

Subin pointed toward the northern current. "The dungeon is distributing excess mana. If we block the pathway, the pressure will accumulate somewhere else."

Jae-hyun nodded slowly. "Like blocking a river."

"Exactly."

Director Kang listened carefully.

"Then what do you recommend?"

"Follow it."

The team prepared for another reconnaissance mission.

This time, they wouldn't approach the dungeon entrance. Instead, they would follow the northern mana current along the coastline and determine where it was going.

Kaia led the group because her ability allowed her to sense pressure changes beneath the terrain. Subin walked beside her, observing the mana movement through the ground.

The terrain became increasingly dense as they moved north.

Plants grew taller.

Small insects carried faint mana signatures.

Bird-like creatures with translucent wings moved between the trees.

None attacked.

The entire region felt strangely peaceful.

After approximately six kilometers, Kaia stopped.

"It's beneath us."

Subin crouched and placed his hand against the ground.

He felt the mana.

It was moving beneath the soil like a wide underground river.

"It's splitting."

Kaia looked at him.

"Into how many paths?"

"Three."

She activated her ability and confirmed it.

"The first moves toward the coast. The second moves inland. The third..."

She paused.

"What?"

"It's moving upward."

Subin looked toward the forest.

"Then that's the one we follow."

The team continued.

After another kilometer, they discovered a small clearing.

At its center stood a massive tree.

It was unlike anything they had seen before.

The trunk was nearly fifteen meters wide, and its roots spread across the ground like enormous veins. Blue light flowed through the bark.

The mana current beneath the ground was rising directly into it.

Ara stared.

"It's absorbing the dungeon's mana."

"Yes," Subin said.

Min-seok looked around.

"Is it a monster?"

"No."

"Then what?"

"A plant."

Min-seok stared at him.

"I can see that."

Subin ignored him.

The tree wasn't simply absorbing mana. It was processing it.

The incoming mana entered through the roots, traveled upward, and emerged through the branches in a much weaker and more stable form.

The tree was functioning as a natural regulator.

Yerin stepped closer.

"It is filtering the excess."

Subin nodded.

"The dungeon is feeding it."

Jae-hyun looked at the enormous canopy.

"Then the dungeon isn't just affecting monsters."

"No," Subin said. "It's changing the entire ecosystem."

A low rumble suddenly came from the forest.

The team immediately prepared.

Several creatures emerged from between the trees.

They were large herbivores, each roughly the size of a horse, with thick bodies covered in short blue-gray fur. Their horns carried faint traces of mana.

Kaia checked their readings.

"Levels eighty-two to eighty-six."

The creatures looked at the team.

None attacked.

Instead, they approached the enormous tree.

They began eating fallen fruit from its roots.

Subin watched them carefully.

The entire system made sense.

The dungeon provided mana.

The tree filtered it.

The plants produced mana-rich nutrients.

The herbivores consumed them.

Other creatures would feed on the herbivores.

The ecosystem was developing naturally around the new source of energy.

"This is happening faster than Greenfall," Yerin said.

"Much faster."

"Why?"

Subin looked toward the distant ocean.

"Because the dungeon is connected to the ocean."

The Pacific provided an enormous amount of water, nutrients, and existing life. The dungeon didn't have to create an ecosystem from nothing. It only had to alter one that already existed.

That made its expansion far more efficient.

The team documented the area before continuing.

They eventually reached the coastline.

The underground mana current emerged beneath a rocky cliff and entered the ocean.

Kaia stood near the water.

"It's spreading."

Subin looked toward the horizon.

The sea appeared calm, but beneath it, mana was moving in enormous quantities.

Then Kaia suddenly raised her hand.

"Something's coming."

Everyone prepared.

A large shadow moved beneath the water.

It approached slowly.

The same enormous serpent-like creature they had seen previously surfaced several hundred meters away.

Its body rose from the ocean, water cascading from its scales.

The creature was enormous.

This time, the mana detectors managed to obtain a stable reading.

Level 158.

Min-seok tightened his grip on his axe.

"That's close to one hundred sixty."

Jae-hyun stared at the creature.

"Should we retreat?"

Subin watched it.

"Wait."

The creature did not attack.

Instead, it moved toward the mana current.

It opened its mouth.

A stream of concentrated mana entered its body from the surrounding water.

Its level rose.

159.

Then stabilized.

The creature wasn't attacking.

It was feeding.

Subin realized something important.

The ocean wasn't merely carrying mana away from the island.

It had become part of the dungeon's food chain.

The creature turned toward the team.

For several seconds, it simply watched them.

Then it disappeared beneath the water.

No battle occurred.

Min-seok slowly lowered his axe.

"I think I'm starting to understand why you don't want to enter that dungeon."

Subin nodded.

"It's not a dungeon anymore."

Yerin looked at him.

"What do you mean?"

Subin watched the ocean.

"It's becoming an ecosystem large enough to include the island and the surrounding sea."

The statement changed the way everyone viewed the mission.

Until now, they had been thinking about the dungeon as a dangerous location.

But perhaps that was the wrong way to look at it.

The dungeon was becoming an environmental system.

A source of mana.

A habitat.

A place where monsters could evolve.

A place where plants could change.

And eventually, perhaps, a territory capable of supporting creatures far stronger than anything humanity had encountered before.

They returned to the observation camp in the afternoon.

The researchers immediately began processing the data.

Director Kang received the report and remained silent for several moments.

"How large could this ecosystem become?"

Subin answered honestly.

"We don't know."

"Could it reach the mainland?"

"Eventually, if the circulation continues expanding."

"And if it does?"

"It may not be a problem."

Director Kang looked surprised.

Subin continued, "If the system remains stable, the surrounding ecosystem may adapt naturally. The problem would begin if the mana distribution becomes unstable."

Yerin nodded.

"So we monitor it."

"Yes."

Director Kang looked at the research team.

"Then that's what we'll do."

The mission had changed again.

The team would not enter the dungeon.

Instead, international researchers would establish observation stations around the island and monitor its development.

Subin, Yerin, and the others would return to Korea after another day.

That evening, Subin and Yerin walked along the beach near the camp.

The sun was setting over the Pacific.

The ocean reflected orange and gold light while the distant island remained faintly blue.

Yerin touched the wooden sword pendant hanging around her neck.

"Do you think we'll come back here?"

"Probably."

"Would you want to?"

Subin looked toward the island.

"Yes."

She smiled.

"Why?"

"Because I want to see what it becomes."

Yerin nodded.

"I knew you'd say that."

Subin looked at her.

"What would you want to see?"

She thought for a moment.

"I'd like to come back when this place is safe enough that we don't need combat teams."

Subin smiled.

"Then we'll come back."

"Promise?"

"Yes."

They continued walking beside the water.

Neither said anything for a while.

The world ahead of them was becoming larger every day.

New dungeons appeared.

New monsters evolved.

Humanity developed new ranks and new organizations.

Yet for that moment, none of it mattered.

They were simply two people walking beside the ocean.

Far behind them, the Pacific dungeon continued its slow expansion.

Its mana flowed through the island, into the ocean, and toward distant shores.

The world had gained another growing ecosystem.

And Subin knew that one day he would return to it.

Not because he needed to conquer it.

But because he wanted to see how far it could evolve.