150 - The Coastal Frontier

Chapter 150 — The Coastal Frontier

By sunrise, the Japanese Association had already established a temporary observation zone along the northern coastline.

Several vehicles were parked near the cliffs, while Awakeners and researchers moved between monitoring stations. The sea looked completely normal from a distance. Waves rolled toward the shore, fishing boats remained farther offshore, and the cold morning wind carried the smell of salt through the air.

Nothing about the scene suggested that something unusual was approaching beneath the ground.

Subin stood near the edge of the cliff with Yerin.

"Still nothing?" he asked.

The Japanese researcher beside them shook his head. "Nothing visible on the surface."

"How long?"

"Maybe three hours."

Subin nodded and looked toward the ocean.

The rest of the team had spread out across the observation area. Min-seok was arguing with Renji about their sparring match from the previous evening, while Jae-hyun and Ethan were examining the security arrangements. Ara had joined several researchers and was asking questions about the coastal monitoring equipment.

Liu Wei stood alone a short distance away, looking at the sea.

Subin walked toward him.

"You've been quiet."

Liu Wei glanced over.

"I've been thinking."

"About?"

"The international ranking."

Subin understood immediately.

Since the announcement of the S-rank category, public interest in the world's strongest Awakeners had increased dramatically. Although there was no official ranking among S-rankers, comparisons were already appearing everywhere.

Subin, however, had little interest in them.

Liu Wei seemed to understand that.

"I don't care about rankings," Liu Wei said.

"Then why think about them?"

"Because everyone else does."

Subin smiled.

"That's true."

Liu Wei looked at him.

"You became S-rank recently."

"So did you."

"I'm not S-rank."

"Not yet."

Liu Wei smiled faintly.

"I intend to be."

Subin nodded.

"I expected that."

There was no hostility between them.

But there was something else.

Competition.

Both understood that every time they crossed paths, they would be measuring themselves against each other.

Liu Wei eventually asked, "If we fight again, will you use Simple Edge?"

Subin looked at him.

"Probably."

"Then I'll be ready."

"I'll expect you to be."

Liu Wei nodded and returned his attention to the ocean.

Subin walked back toward Yerin.

She smiled.

"Another rival?"

"Maybe."

"You collect them naturally."

"I don't collect them."

"You don't have to. They find you."

Before Subin could respond, Min-seok shouted from behind them.

"Subin!"

He turned.

Min-seok waved him over.

"What?"

"Renji says your swordsmanship is boring."

Renji immediately looked annoyed.

"I didn't say that."

"You said his style is too simple."

"I said his style is difficult to read."

"That's basically the same thing."

Subin walked over.

Renji sighed.

"Ignore him."

Min-seok grinned.

"Fight him."

Subin looked at Renji.

"Do you want to?"

Renji's expression changed.

"I wouldn't refuse."

Yerin folded her arms.

"You're seriously going to start another sparring match before the mission?"

Min-seok nodded.

"Of course."

Jae-hyun, who had been listening from nearby, approached.

"I'll watch."

Ethan followed him.

"So will I."

Within minutes, several members of the team had gathered around the temporary training area.

Renji and Subin stood opposite each other.

Neither drew their sword immediately.

Renji looked at Subin.

"Last time we met, you barely spoke."

"I don't usually talk during fights."

"Good."

Renji drew his katana.

Subin drew Simple Edge.

The atmosphere changed.

Renji moved first.

His opening strike was fast but restrained. Subin shifted his sword and redirected it rather than meeting the force directly.

Renji immediately changed direction.

Their swords crossed twice.

Then three times.

The exchange was much faster than the previous sparring matches.

Renji's style was precise and conservative. He didn't attempt spectacular attacks. Every movement had a purpose, and every attack left him positioned to respond to the next one.

Subin recognized the principle almost immediately.

Renji wasn't trying to defeat him through a stronger attack.

He was trying to limit his options.

Subin adjusted.

The next exchange lasted longer.

Renji attacked from the left.

Subin redirected.

A low strike followed.

Subin stepped backward.

Renji advanced.

The pressure increased.

Min-seok watched with a serious expression.

"He isn't giving Subin much space."

Jae-hyun nodded.

"That's the point."

Ethan's eyes remained fixed on the swords.

"Renji's trying to force him into a predictable rhythm."

Yerin smiled.

"And Subin hates predictable rhythms."

The next moment, Subin changed his movement.

Instead of retreating from Renji's attack, he stepped forward.

Their shoulders nearly collided.

Renji's eyes widened.

Subin's sword stopped a few centimeters from his chest.

Renji froze.

For several seconds, neither moved.

Then Renji lowered his sword.

"I lost."

Min-seok laughed.

"That was quick."

Renji looked at Subin.

"You didn't break my rhythm."

"No."

"You stepped inside it."

"Yes."

Renji smiled.

"That's worse."

Subin sheathed his sword.

"Your style is good."

Renji nodded.

"Yours is difficult to fight."

"That's not necessarily good."

"It is for you."

The small gathering slowly dispersed.

There was no celebration.

No dramatic announcement.

It was simply another lesson exchanged between swordsmen.

Subin found himself appreciating that.

Not every battle needed to become a major event.

Sometimes a short fight was enough to understand another person.

A few hours later, the coastal monitors reported the first visible change.

The sea had begun behaving strangely.

Not violently.

The waves near the shoreline had become unusually smooth.

Then the water began retreating.

The researchers immediately moved toward the observation area.

Subin looked toward the horizon.

"Everyone stay back."

The order spread quickly.

The water continued pulling away from the shore.

Several meters.

Then ten.

Then nearly thirty.

The exposed seabed stretched farther than anyone expected.

Fishermen watching from a safe distance began moving their boats away.

The Japanese officials immediately issued evacuation warnings for the nearest coastal settlements.

Subin remained on the cliff.

Yerin stood beside him.

"This isn't a normal tide."

"No."

"Could it be dangerous?"

"Possibly."

The water stopped retreating.

For a few seconds, nothing happened.

Then the sea began moving forward.

Not as a wave.

As a massive, smooth rise.

The water lifted several meters before collapsing back toward the shore.

A shockwave of spray spread across the coastline.

The monitoring equipment began producing alarms.

"Something has reached the sea," Ara said.

Subin watched the water.

A faint blue glow appeared beneath the surface.

It spread outward in a thin line.

Then disappeared.

Nothing else happened.

The team waited.

Five minutes passed.

Ten.

Twenty.

No monsters emerged.

No massive wave followed.

The coastline slowly returned to normal.

Min-seok looked disappointed.

"That's it?"

Subin glanced at him.

"For now."

The researchers checked their instruments.

The readings were changing, but nothing indicated immediate danger.

The Japanese command decided not to send anyone into the water.

Instead, several drones were launched.

The drones traveled several kilometers offshore.

Their cameras showed something unusual.

A long underwater formation had appeared along the seabed.

It resembled a natural reef.

But it hadn't existed the previous day.

Subin watched the footage.

"It's growing outward."

Renji looked at him.

"Toward the ocean."

"Yes."

"But slowly."

"That's better than rapidly."

The team continued observing for several hours.

Nothing attacked them.

Nothing dramatic happened.

That itself became the most important result.

The dungeon's influence had reached the ocean without immediately creating a disaster.

The Association officially classified the event as a Coastal Mana Integration Zone.

The name was intentionally neutral.

No one knew what the area would become.

That evening, the team returned to the temporary base.

Min-seok dropped into a chair.

"Three days here and we've barely fought."

Ara laughed.

"That's because this isn't a monster-clearing mission."

"I know."

"You still look disappointed."

"I like fighting."

Jae-hyun looked at him.

"You also like losing."

Min-seok's head snapped toward him.

"I don't lose."

"You lost to Subin."

"That's different."

"You lost to Renji."

"That was a spar."

Jae-hyun smiled.

"What's the difference?"

Min-seok stood.

"Do you want to find out?"

Yerin sighed.

"Here we go again."

Subin sat down with a cup of tea.

He didn't interfere.

The two men eventually settled their argument with another sparring match.

This time, Jae-hyun won.

Barely.

Min-seok complained for nearly twenty minutes afterward.

Subin found the entire thing strangely entertaining.

Months ago, these interactions would have been difficult.

Everyone had been fighting for survival.

Every disagreement had carried consequences.

Now there was enough stability for people to compete simply because they wanted to become stronger.

That was another kind of progress.

Later that night, Subin received a message from Director Kang.

Return to Korea tomorrow.

Below it was a second message.

There is a new development.

Subin opened the attached report.

A new dungeon had appeared.

Not in Japan.

Not in Korea.

In South America.

The first readings placed it at B-rank.

Within twelve hours, it had reached A-rank.

Within another six hours, it had reached A+.

The location was near a major inland river.

Subin stared at the report.

Yerin noticed.

"Another one?"

"Yes."

She read the report.

"That's happening faster now."

Subin nodded.

The world was no longer changing one dungeon at a time.

They were beginning to appear faster than the international organizations could fully study them.

Yerin looked at him.

"Are you worried?"

"No."

She smiled.

"You really don't get worried."

"I do."

"When?"

"When something happens that I can't solve by becoming stronger."

Yerin looked at him for a moment.

"And what happens then?"

Subin looked toward her.

"I'll find another way."

She smiled.

"That's more like you."

The next morning, the team prepared to leave Japan.

Renji approached Subin before departure.

"Next time we meet, I want a rematch."

Subin nodded.

"Sure."

Min-seok immediately stepped between them.

"After me."

Renji laughed.

"You haven't beaten me yet."

"I will."

Jae-hyun walked past them.

"Both of you are noisy."

Min-seok turned.

"You're one to talk."

The group boarded the transport aircraft.

Yerin took the seat beside Subin again.

As the aircraft rose above the coastline, Subin looked through the window.

The ocean stretched endlessly toward the horizon.

Somewhere beneath that water, the newly formed structure continued developing.

He didn't know what it would become.

He didn't need to know yet.

The world had changed too quickly for anyone to understand everything at once.

For now, they would observe.

Train.

Fight when necessary.

Protect people when required.

And continue moving forward.

Subin leaned back in his seat.

Yerin glanced at him.

"Thinking again?"

"Yes."

"About the dungeon?"

"No."

She smiled.

"Then what?"

Subin looked at her.

"The next sword I'll have to fight."

Yerin laughed.

"I should have guessed."

Outside the window, the clouds stretched across the sky.

Far below them, the coastline disappeared into the distance.

And thousands of kilometers away, in a completely different part of the world, another dungeon continued growing beside an inland river.