"Use > instead of <> or ......"

<> is literally an airship, levitated by helium gas. Even if it were to lose all magic, it would not crash at once.

If it is carried by the wind and can get out of the range of the <>, it will be able to restart.

"and ......"

Jin considers how to approach the <> boundary.

"Brother Jin, why don't we put up a <>?"

Jin nodded at Elsa's opinion.

"That's right. It would be bad if it should malfunction, so we should install two additional systems of barrier projectors.

Together with the original barrier projector, we will have three systems.

Reiko, who is to accompany me, is to have two additional barrier projector systems.

Similarly, Edgar, the pilot, is to have two more systems.

In addition, as many mana cylinders (mana cylinders) are carried as much as the load capacity allows.

"The object dropped at Lake Tosmo looks suspicious. Okay, I'll bring two mermaid squadrons with me. Edgar will pilot. Me, Reiko, Mermaids 1 and 2 will go."

< floats on helium, its payload is smaller than that of , which floats on force field generators.

"Brother Jin, are you okay?"

>

"No, if the magical tool that caused this situation is as expected, there's a good chance it won't help if I don't go."

<>

"Besides, a human being can act even within the wards of <>."

"Brother Jin, be careful."

Erza has also decided that Jin can't be persuaded.

"Take care of Rai, Bertsch, Saki and the others at ......."

"Yeah, you can count on me."

Jin did not have that much confidence in his ability to handle the situation, but he tried to reassure the anxious Elsa with a bright smile.

* * * * * * * * * * * * * * *

First, we were transferred by transporter to the airspace above Schwere, where we knew it would be safe.

From here, they ascended to a higher altitude and first checked to see how far up in the sky the < boundary existed.

<, and a magi crystal with a < effect is hung from the end of the rope for monitoring purposes.

When this light goes out, it means that you have entered the <> ward.

Measured in this way, the <> ward is found to be almost hemispherical in shape. The radius is 50 km, and the estimated height is 50 km.

The reason why the height is estimated is because the helium levitating <> could not reach up to 50 kilometers above the ground.

It is also because they did not want to be conspicuous to anyone who might be watching them from anywhere.

And the center of the warding was still Lake Tosmo.

"Okay, let's go to Lake Tosmo.

, flying with three layers of deployed, safely entered the .

"Even this could have been observed, though."

A helium-powered airship in a world of hot air balloons. It is not clear what they will make of it.

We had to get this situation under control as soon as possible.

* * * *

"......I wonder how long this situation will last. ......"

Gerhard Hilde von Rubies Shawlo, the Shawlo Empress, looked helplessly up at the sky. There was something in his eyes.

"Is that ......?　<

There was no mistaking it. <

"Jin, you came to ......."

< passes over Reuthert and disappears in the direction of Lake Tosmo.

"You're our only hope. ......"

The emperor looked at the back of with a prayerful look.

* * * * * *

"Over Lake Tosmo, sir."

Edgar brings to a stop about 10 meters above the surface of the lake.

"All right, Mermaids 1 and 2, let's go. Let's go.

"Yes, Master."

The two jumped down from the rear hatch. Two splashes on the surface of the lake.

Normally, Mermaid 1's eyes would be linked to the magic screen, but she has now put up a , so no such information is sent to the screen.

All that remained was to wait.

The depth of Lake Tosmo is about 20 meters at its deepest point. The water is so clear that the bottom of the lake can be seen from above without auxiliary light.

The mermaids have night vision because of their deep-sea activities, so it is even more difficult to see the bottom of the lake.

"The bottom of the lake is relatively clean.

I had imagined that there would be a lot of waste, but there is very little of that kind of thing.

"That makes it easier to find. ......"

We have a rough idea of the center of the boundary, but the lakebed is still quite large, and it is a difficult task.

Half an hour passes, an hour passes.

Two hours turned into three hours and then .......

"Master, I found it!"

came the voice of Mermaid2 floating on the lake.

"Well done!　Bring her over here."

Jin, who had given the order, once out of the ward, cuts the and consults with the old man.

"What should we do?　Should we analyze it or destroy it immediately?

<

"Well, ......, what should we do?"

If we go out of the barrier that is currently putting up, Jin can no longer use engineering magic.

"We shouldn't move ...... either."

If the area where magic cannot be used is moved, that will be a problem.

"What should we do ......?"

Jin decides that since engineering magic cannot be used, the only way is to destroy a part of it.

"Or we could slice it up with a <>."

The laser beam is generated by a magic tool, but the light emitted is a physical phenomenon. Therefore, it is effective even within the <> boundary.

<

"Indeed it is. Okay then, Reiko, take care of Momoka.

I'll leave it to you.

Deciding on a course of action, Jin once again put up the <> and returned to Lake Tosmo.

Mermaids 1 and 2 are waiting on the surface of the lake with their < warding generators.

"It's surprisingly big.

It was roughly the size of a basketball.

"From the color, I'd say its outer shell is light silver. Reiko, please.

Mermaids 1 and 2 support the sphere from both sides, and Reiko cuts it in the middle with her beloved sword .

The hyper adamantite Momoka will be able to cut through light silver and magi crystals with no problem.

"Here I go!"

< and swung her .

The warding generator is cut in half, and Reiko delivers her before it even touches the water. She then landed in Lake Tosmo.

Immediately thereafter.

"Father, I can use magic now!"

Jin reports.

Jin lowered the rope ladder from , first pulling Reiko up, and then using the rope to retrieve Mermaids 1 and 2 and their warding generators.