"Oh, and Atmosphere is amazing. I never thought it would work like this."

"You look good, kid."

"That's right, old man. Vulcania has now become a new, 50-meter high, walled, 8-kilometer city. Besides, Atmosphere got the iron wall defenses."

"Hmm? What do you mean? By Atmosphere?

"Oh, I told you I had tamed the land with the magic of Atmosphere, the labyrinth nucleus. This means that Vulcanian walls and things have become part of the Labyrinth. And maybe Atmosphere can help us fix those things automatically."

"... hah? Automatic repair? What the hell, kid? Do you fix the walls on your own?

"That's right. I mean, that's what I did to Atmosphere. When the walls and sewers collapsed, I asked them to fix it with the magic of Atmosphere."

"Oh, come on, is that so? I mean, can you have a conversation with that huge rock...."

"Oh no, that Atmosphere was called a Spirit Stone. I've been insisting on making a deal with spirits like Kyle. Every night, he touches Atmosphere, sends magic, tries to talk."

"Wow, did you talk to the Spirit Master?

"No, I couldn't. But I noticed when I was sending magic to Atmosphere. Like this urban expansion, I will manipulate magic to destroy Vulcanian lands. And I kind of felt it, but if I asked you to fix the wall you built this time, it would seem that way."

Hmm. It's kind of unbelievable, but if the kid says so. I'm sure there's no one but the boy who can use the core of the labyrinth that much. "

"Hahaha. From now on, you can call me Dungeon Master, old man."

Atmosphere is incredible.

Just because it was there, the amount of magic contained in the atmosphere was increasing.

For this reason, at first I thought that Atmosphere would be in Vulcania alone and that in the future there would be more people with a lot of magic in the area.

But that wasn't the only effect of Atmosphere.

Over time, the magic of Atmosphere penetrated the ground as well as the atmosphere.

And I realized that I could use that magic every day by dealing with Atmosphere.

Not only this urban expansion, but it also serves as the nucleus of the labyrinth.

This is how I feel, but I actually attacked the wall and broke down a part of it to check it out.

As a result, the broken walls were repaired voluntarily over time.

Somehow, this looks like a real labyrinth.

Perhaps the Spirit Stone will be mined in Atmos' village because Atmos warriors worshipped the Spirit Stone in gratitude.

There is no confirmation whatsoever, but because there was atomosphere in the village of Atmos, the Spirit Stone could be mined, and in Vulcania the subject was replaced by a hardened brick.

Soon, the outer walls of Vulcania will become like an indestructible object in a dungeon that is a story.

If so, you must be able to mark history as an absolutely insurmountable and irresistible fortress city.

"But can you use it any other way, kid?

"What other way to use it? Did you come up with any other way to use Atmosphere, old man?

"Ah, I don't know how it works, but I suppose you did because the boy asked Atmosphere to keep restoring the wall? Then maybe I should do something else."

"What other favors? Do you have a favor to ask?"

"If the wall is fixed on its own, how about you always want to maintain the same nutrient-rich land that you used when you [improved the soil]? Even a small area of Vulcania is fine, so if there is a promised abundance of land, you can feed yourself even if there is something like a cage castle in case of emergency.

"... I see. I wonder if I can keep the soil in the same condition as after [soil improvement] even without using magic. That might be interesting. Then let's do some of the Atmos district and the ranch district."

My old man came up with an interesting idea.

If there is a function to fix the wall on its own, is it strange that there is also a function to restore the state of the soil on its own?

The ranch district is now herding goats and Valkyries.

The land is sometimes horned and grazed, and Valkyries feed themselves on [soil improvement] so that the hatsuka grows, and the goats also eat it.

However, if Atmosphere can maintain the nutritional status of the land on its own, it may be able to do so without Valkyrie.

Then we decided to divide part of the Atmos district again into farmland.

This could be like a food plant in a bad time.

Hopefully there will be no such future, but I will be able to be self-sufficient internally in case I decide to cage in Vulcania.

Thus, the city of New Vulcania, with its labyrinth nucleus, acquired an entirely new defensive function.