Welcome To the World of Power Supremacy

"...Did it really sink to such a place? That thing?"

The captain snorted unhappily.

The deepest part of the waters east of Itogami Island, which they commissioned to investigate, is more than nine kilometers deep.

There are only a handful of submarines that can dive to that depth, in other words, it's a forbidden area for humans.

"A biological weapon from the age of mythology... It is said that the wreckage of that thing can be found around here. Where are these rumors? I guess it is some unfounded legend or something?"

"Who knows, maybe it's a murloc or something?"

"...half-merman?"

"Haha, just kidding. But this time, the client is a company located in Itogami Island, right? Then it's not surprising even if you know someone in this area."

"Indeed, then this kind of boring investigation should just be handed over to those guys by the way."

The captain sighed deeply after speaking in disgust.

It is said that traces of biological weapons were created in the ancient times - this is the search target of the Isrus submarine this time.

More than stupid job content is why the captain is unhappy.

The purpose of building the submarine survey boat Isrus was to investigate and study the ecosystem and evolutionary process of deep-sea creatures, and to unearth old antiques whose real existence was uncertain. Obviously, it was not its original mission.

"Anyway, I still don't think it's worth spending so much money to find it. Isn't it rumored that Itogami Island is currently in an extraordinary position in the world? Are we touching taboo territory by doing this now?"

"This...isn't it?"

In order to make the crew feel at ease knowing the real answer, the captain gave the opposite answer.

At this time, the driver who had been watching the exploration display screen suddenly frowned in confusion.

The captain looked at him with a surprised expression.

"what happened?"

"There is some discrepancy with the terrain data... It's here, can you tell?"

The CG-processed seafloor topography is displayed on the screen the driver is pointing to.

The 3D image reproduced the terrain data obtained from past surveys, and the image displayed with frame lines was the real-time situation obtained by the Isrus submarine's sonar. The two data that should have been identical were strangely misaligned.

There is a slight upward bulge in an area spanning several kilometers on the seafloor.

"It doesn't seem to be the fault of the sonar being affected by the thermosphere. Is it an abnormal uplift of the seafloor?"

"No, there is no sign of volcanic activity in this sea area. This shape looks like some kind of creature..."

"biology?"

How could it be - the captain stared at the driver's pale profile in surprise.However, the analysis image of the sonar on the screen was changing its shape irregularly little by little.

It does look a lot like a creature crawling on the ocean floor.

A crocodile or a snake—or maybe a dragon—several kilometers in length.

"How could such a creature exist... It's too big... It's just... It's really a monster in myth...!"

The captain was trying to convince himself, but the pilot next to him suddenly screamed.

Immediately after that, a burst of rapids like the impact of an explosion hit the submarine in an instant.

It was a strong deep sea wave with water pressure four thousand meters below sea level—

The violent vortex that appeared near the bottom of the sea rolled the submarine over and over like a tree spit, and the pressure hull protecting the driver's seat was strongly squeezed and made a groaning sound.

The source of the vortex does not need to be confirmed, it is already obvious, it is a monster.

The huge monster submerged in the sea moved slightly, just like that.A strong shock wave was created around it.

"Indeed...the pulse wave of biological magic power is confirmed! This guy is alive!",

The driver grabbed the seat tightly and yelled.

The super-giant sea creatures with a total length of several kilometers are really beyond common sense and extremely absurd. However, now they actually exist in front of them, bringing overwhelming destructive power and fear.

"Avoid! Emergency avoidance! Hurry up!"

The captain couldn't help screaming, but the hull rolled violently in the sea water, and even the sense of direction up and down disappeared. The ballast used for emergency floating has been detached, but it has almost no effect in the frantic whirlpool.

As if communicating with other beings, the huge monster paused for a moment.Then turned around and moved forward with a stronger momentum, changing from passing by the submarine to a straight attack on the submarine.

The hull shattered in the terrible shaking, and the pressure hull made a strange noise.

"Exceeded the pressure limit! The lead of the ship will be crushed!"

"At this depth?!"

The captain held his breath in the screams of the driver. Even in this situation, Islus's submersible limit was still left, especially the special pressure hull was caused by considering the safety of the occupants. It can withstand the hardness of [-] meters of water pressure.

Such a sturdy submarine is being crushed by the oncoming force.

The floodlights that provided the illumination on the ship had been destroyed, and the surrounding area was plunged into darkness. Before that, the last light that appeared was countless sharp teeth like rocks.

……

On Itogami Island, Igarashi, who was at the garrison headquarters, leaned on the seat and tapped his fingers, looking at one of the chiefs of the garrison standing humbly beside him.