"What? The number of underwater monsters is too many to count?"

"Just the ones confirmed to have launched attacks on us explorers underwater are at least more than twenty."

"..."

The man who escaped back to shore and his handlers repeatedly confirmed the information.

The continuous flow of reports only made the Casters around the harbor increasingly anxious.

According to this explorer's account,

beneath the sea outside Capen Port, countless deep-sea giants have already gathered, and based on the last scene he saw before leaving—there's an endless stream of oceanic giants continuing to flood in from the far depths of the sea!

This doesn't seem like a simple revenge attack at all.

On the contrary, it seems like these deep-sea beasts are planning to wage an interspecies war against humans!

"..."

"Sir, the situation seems a bit dire."

"Let's not rush. Let's see how both sides handle things first."

Meanwhile, Costate and Ronald, standing at a distance, quietly discussed.

Although neither of them were on the front lines,

their excellent perception abilities ensured they were aware of everything happening afar in real-time.

Even though Ronald maintained a calm response to Costate's inquiry,

deep down, when thinking about the library behind them, his expression inevitably became tense.

If things are truly as the man described, with an endless stream of deep-sea giants heading towards Capen—honestly, this situation is too severe.

A few waves of such attacks, a Caster of Ronald's level, and even slightly lesser Original Holders might handle. But a continuous onslaught coming from the depths...

By then, not only Capen would be in danger,

but many coastal regions that rely on marine trade could also suffer tremendous impacts from such events.

After all, it's impossible for every outbound vessel

to be equipped with multiple Casters capable of handling such attacks to protect them.

"Roar!"

At that moment, a fierce roar erupted from the direction of the setting sun ocean.

After a few more minutes, the sea beasts lurking beneath the surface finally completed their attack preparations.

With this roar filled with anger and vengeance,

a water vortex large enough to cover a city finally appeared on the sea surface. The fast-spinning seawater surrounding this vortex also began forming waves tens of meters high, surging menacingly towards the city!

Faced with this scene,

the person standing at the forefront directing the Array didn't have time to inquire further and shouted as they fully activated the defense conjured by the Casters:

"Prepare to face the first wave of impact, and don't forget to keep strengthening the defenses!"

"Everyone, the survival of Capen is at stake!"

Boom—

A few seconds later,

the towering waves crashed onto Capen's harbor.

However, it was reassuring that the defensive Spell constructed under the lead of the Dawn Spell Society was very effective. Just like with the previous smaller waves, though this time the water came more violently and exaggerated, its power was completely neutralized by the Spell's effect.

Once the waves swept over the ground,

as the water receded from the shore, it left only the streets extremely wet, with no damage at all to anything else.

Everything protected by the Spell was completely cloaked by this hidden effect, showing not a trace of change from its position on the ground.

Meanwhile,

Costate, beside Ronald, also simply commented:

"Such wave attacks haven't exceeded the defensive limit of the Spell."

"If those ocean creatures think they can cause this kind of effect just by stirring waves, then tonight's victory should belong to the human side."

In response to Costate's judgment, Ronald lightly shook his head, his thoughts not as optimistic as his maid's:

"Costate, I fear their attack might be more than just the waves."

"According to the guy who just returned from underwater, with so many sea beasts gathered, it's impossible they would..."

"Roar——"

Before Ronald could finish, another roar erupted from the distant sea surface.

The shore Casters who fully repelled the wave threat realized the sea beasts in the vortex noticed this as well.

Faced with their attack's ineffectiveness,

these monsters lurking under the water let out a roar of discontent, simultaneously releasing a significantly evident Magic Fluctuation.

Soon, the massive vortex center began emitting spots of light.

Upon closer inspection—

these glowing spots were actually yellow liquids with strong magical reactions.

Just a few seconds later, the seawater completely changed color due to these substances.

And the now Spell-infused yellow waves crashed a second time!

Rumble—

The waves mercilessly battered the city.

Observing these colored waters closely, it became apparent they visibly had corrosive properties, faintly emitting a sour stench.

But unfortunately—the newly enhanced wave still failed.

The Array governed by the Dawn Spell Society remained steadfast in its purpose. Even when the nature of the waves shifted from pure physical collisions to corrosive magical effects, the city itself was still securely shielded by the Spell, free from such attacks.

"Hahaha——"

Facing the sea beast's second unsuccessful assault, the Caster directing the Array from the front couldn't help but laugh aloud:

"You foolish dead fish, do you think possessing a slight power can break our meticulously researched Spells over the years?"

"Arrogant and conceited creatures!"

"The world of Magic isn't as simple as you think!"

"..."

The sea surface vortex continued spinning rapidly,

yet the atmosphere now inexplicably carried a sense of calm.

The people of the Dawn Spell Society, though brazen in their words, had their sound defense Spell as the basis for such behavior.

While human words couldn't perfectly communicate with deep-sea fish, their attitude clearly conveyed the Casters' message to the sea beasts brewing just below the surface.

More pressingly,

even if the sea beasts beneath the water grew exceptionally furious,

being unable to threaten the city,

meant their tactic had failed.

Rumble——

Amid this scenario, the water was suddenly pierced by a shadow.

The sea beasts maintaining the vortex suddenly made a surprising move.

One giant deep-sea fish leapt out of the water, aiming its massive body at the Caster's position, crashing down heavily!