The defensive wall was built in an approximate square around the village.
　First I made a model of a house at my feet to show the center of the village.
　It is quite small in size. The plan was to build something that could be carried with both hands, including the bulwark.

　Then I built a square of the wall around it.

'First of all, the basics look like this, right?'
Well yes, well I think this defensive wall should be much thicker. And also, please build towers in these four corners so that we can climb on top of the bulwark.
...I see. The inside of the tower is a ladder?　Or is it the stairs or something?
I think a spiral staircase would be good...

　...I see.
　I'm going to build it as you said.
　I'll make the tower separately so that you can see the inside of the tower.

...like this?
Or, can you put a window in the wall and get some light?

　Biane tells me as I peer inside.
　
　We should be working on the basics.

　We complete the tower and connect it to the barrier.
　I placed them in the four corners so that we can get out of them on either side.
　We've prepared a space where you can live lightly on top of the tower, or use it as a resting place.

''........Will this be complete?
Oh, and I'd like a bumpy part on top of the barrier.
Oh, there is such a thing...
Oh, no!　When it comes to barrier protection, this is it!　I'm sorry, I'm sorry...

　Bian says excitedly.
　As I recall, that bumpy surface is there to keep the enemy there with a bow or something from there?

What's that all about?

　I ask as one of the interactions, and Biane snorts when I ask.

'Oh, that's one to attack while hiding from enemy attacks!　A barrier without that is not a barrier!
Ha, ha....I see.

　Mr. Bian seems to be a lot more passionate about these things than I assumed.......
　It's best not to talk too much and just listen. My gut tells me that.
　After that, we took Bian's ideas into account as we built the defensive wall.
　When Bian looked at the model that showed the whole picture of the village, her eyes were already shining with joy.

''Wow........this is really something that can be built so freely and in so many ways.......!

　Even her nose is bleeding, and Biane's face is close to the protective wall I've created.
　
　While my cheeks are slightly tugged at Bian-san's condition, I check with her.

''Is it correct that the barrier is now complete?
But I think he's gonna be okay!
I understand. I'll use this as a reference for making it.......and I don't know much about houses. In the future, if you have a house that you think you might need, it would be great if you could think of another one for me.
Oh, really...?
Yes, that's very helpful to me.
Okay, okay!

　Bian smiled happily.
　It was then. The children came over to us.

'Big sister Bian!　Let's play together!
Oh, yes.......... So, then..........　Another time, please!
"...yes. Thank you very much.

　Mr. Biane left with the children.
　Camilla, who was watching the whole thing, came over to us with a wry smile.

'Lelius seems to have quite a talent for womanizing, to treat Bian that well.
Well no, not really.
'Bian, I'm not very good with people, especially men. Lelius may be the first one to get me to talk that well.
It just so happens that her interests and my abilities coincide, don't they?
'Still. Bian, I'm not much of a fighter, so I had to take care of the kids a lot. We've been a big help, but Bian was pretty concerned about them, so I guess he was happy to be able to do a lot of work for the village this time.
''....I see. Then I'll have your help in the future when we build houses.
'Yes, I wish Lelius would speak to him.
Okay.

　I look at the model I made with Bian-san and then I unfold the magic in my brain.
　

'Camilla-san. I'm going to concentrate for a moment I'm going to close my eyes for a while.
"...All right. I'll go check on the village for a bit.
Yes, sir.

　I picture the whole picture of the village as I build the defensive wall.
　It was easy to imagine, probably because I had built a small village earlier.
　First of all, I built the fortification wall. The walkway of the wall is carefully constructed.

　Then we build the towers at the four corners.
　Building the interior of the tower. All of this is done in consultation with Mr. Bian.
　And then we will build the gates to the four walls.

　The activation of the gate is done by using the magic stones inside the tower. The circuitry that works when magic power is flowed through it will be connected.
　In case it malfunctions, I will prepare a manual opening and closing operation so that it can be opened manually.

　
　It was suggested that the height of the barrier should be about 5 meters.
　If it was too high, it would provide too much shade. It's not that we are waging a war. The only demons around here that we should be wary of are the blue stone demons that run on the ground.

　In fact, if it's a flying demon, it doesn't matter how high the barrier is, it doesn't matter how much it's raised.
　The walls will be as thick as possible.

　I manage to produce the whole thing while taking a break in the middle.
　And - it's all finished.
　All that's left is to unfold it.
　Just then, Camilla-san came over.

'Did you finish it?'
'Yes, sir. We're going to install it now.
Yeah. Bian, it's done.

　Camilla called out, and Bian and the children were nearby.
　........I'm worried that Bian-san will be angry with me.
　I thought I'd made it just as I was told, but...

　I packed up my magic and deployed a magic circle and a defensive wall to cover the village.