<, the unit of Magi Crystal, was being discussed in , the interim report of the underwater observation was being continued in Horai Island.

"I am sorry for interrupting you again and again.

<

The old man projected an image of the ocean floor at a depth of more than 1,000 meters onto the magic screen.

Around this area, there is almost no light at all, and it is a dark world.

Since there is almost no temperature change, the infrared images are not clear.

So he used a < made in Penglai Island.

This device amplifies a small amount of light by several thousand times.

The image quality is so noisy that it is unbearable to see if the light is amplified as it is, so the image is processed.

In places where the light is still too dark, special magic waves are used for observation.

Normal magic waves are not suitable for viewing images because they penetrate through most materials, but some magic waves belonging to <> have the property of being reflected on the surface of materials like light waves.

By using them, we can see a clear image even in the dark without light.

"What?"

"What is that?"

Is that the ...... site?

The site is located at 20 degrees west longitude and 10 degrees north latitude. Depth of 1,100 meters.

It looked like a building at first glance.

"...... not it."

<

The old man showed a large image of the something.

"Is this a ...... submarine?"

"Maybe it's the submarine used by the originators."

It was lying on the ocean floor at a depth of 1,100 meters.

<

"It seems so. ......It's an unusual shape."

If we were to compare it to anything you know, it would be a ray.

A ray, of course. The submarine was flat and thin, triangular in shape.

"Is it pressure resistant ......?"

The shape makes even Jin wonder how it withstands pressure from above and below.

"Is it a boundary or a material ......?"

"Can't you pull it up?"

Erza advised Jin as he pondered.

If we could pull it up and investigate, there might be something to be gained.

"Well, it would be easier to pull it up if we can give ......<> to the <> to lighten its weight and bring it to the shallows."

<<>

"Yes, please."

Thus began the plan to salvage the wreckage of a submarine believed to belong to the "Origin.

However, the underwater exploration continues.

The images that the old man projected went deeper and deeper.

The continental shelf...... or should I say continental slope, the seafloor here is gently deepening toward the east.

The deepest part is said to be over 10,000 meters, but it seems to be only in a limited area, not an <>.

"Well, this crust of Arus is stable, isn't it?

"Yes, Jin is right. The crust of Arus is stable, though I don't know ...... if it is because of the work done by the .

Goose corroborates Jin's words.

However, it is not the case that there is no <> at all, and there is a trench over 10,000 meters deep to the east of Horai Island.

It was said that this trench must have existed before Ars was remodeled by the .

"About 1,300 meters or so."

The seafloor in the vicinity was covered with jutting rocks, and on closer inspection, some small shrimp-like and cruciolids-like creatures could be seen.

"Giant squid...... no, no kraken."

"No mermaids......, no <> either."

"<>?"

Jin asked back at Goose's words.

"Yes. I thought it would be better to call them 'arm fish' because their fins are their hands. <

"Hmm, I like that. I like it. She doesn't look too much like a person to be called a mermaid.

The others had no objections, and the deep-sea fish with its pectoral fins as hands was henceforth referred to as a "hand fish.

The area where the arm fish lives is still unknown.

"So far, we haven't found any arm fish."

"Well, if you can't find it, you can't find it. It didn't seem to be an intelligent body.

Jin and the others stare at the screen while talking like this.

"Hm?　...... that's ......."

< too.

The next object found was a spherical object about 10 meters in diameter.

"Could it be an escape pod?"

"Maybe, but ......"

This, too, he decided to instruct <> to pull up.

"Hmmm,...... the bottom of the ocean is an unknown world."

"Hmmm, really."

"I thought there was no more unknown place on Ars.

"Hannah, you're right. But then I think about it, we haven't done much research in the deep sea.

As Reinhardt said, the deep sea, which is more than 1,000 meters deep, is a technological hurdle to overcome before it can be used for anything, so Jin and his team had hardly done any research.

"But it seems that the have been here."

"Yes. ...... maybe it was an unmanned boat."

"Why ......, if the crew is made up of golems and automata, you can say they're , right?"

"That's what I meant."

Whether Jin and the others are right or not, we will find out by examining the submarine and the pods.

The images projected on the large magic screen descended to the bottom of the ocean.