"............

"Huh? What's the matter with you? Demon King-sama.

　I was in a disheveled posture with my feet on the throne and my body hanging down to the floor when a voice falls from above me.

Oh, Leila. No, this is it.

　Then I show the book I was reading up.

"Huh? It's ...... a book on magic circuits?

　Yes, I had a book on magic circuits that I bought in town the other day.

　I've succeeded in creating a new weapon, the flame of sin, so I'm determined to create a magic circuit to fill it with my new weapon: ...... Even though I put my mind to it, I still don't understand what I don't understand.

　I'm sure you'll be happy to know that I'm not the only one who has a certain amount of knowledge on the subject, and I'm afraid that I lack that knowledge.

　I don't know anything about magic theory first and foremost. It's a good thing that you're able to have a good idea of what you're talking about.

　I want to incorporate a magic circuit that causes the enemy to burst into flames from the place where I cut it, in order to make the flame of sin into a harmless weapon and the world's most powerful sword, but I've stumbled on the point before that.

If you want, I can teach you.

What--do you understand this?

　I'm going to sit up.

Yeah. I used to work with magic for a living, so...

Please do.

　I nodded in return to her suggestion.


　　　.


Listen, my Demon King. I've said it once before, but do you remember how the current common magic is activated?

"Let's see, ...... chanting to build up a magical skeleton and then pouring magic power into it to complete the magic, right?

That's right. And the magic circuitry, the skeleton of which is represented by letters and patterns, is carved into something to serve as a substitute for chanting, and then the magic power is poured into it to activate the magic. If I were to describe it in terms of primordial magic, it would be like taking all the imaginary parts of the pre-magic stage of activating magic and making a drawing of it...

...... I see. Why would you write such a complicated book about that level of detail?

　I mean, wouldn't it have been quicker to ask Leila about everything from the beginning?

Magic can easily become a weapon, depending on how you use it. Therefore, it is possible that the magic is deliberately made difficult to be understood by ordinary people to prevent it from penetrating the masses. In the case of demons, since all of them can use magic, it's not so important...

　--Oh, I see. You regulate magical technology to prevent commoners from having military power. It's a kind of sword hunting.

　There are adventurers who fight for a living, but the threat of magic is invisible to the eye. In short, adventurers have weapons in their hands and are easy to guard against, but with magic, even if your opponent is bareheaded and empty, he or she has a strong weapon that can kill you.

　Certainly that would be a big threat to the ruling class. It's not hard to understand why they would have a certain amount of control.

Now, the diagram of the magic circuit is divided into several stages.

　Saying that, she begins to write the drawings on the whiteboard I put out for Iruna's study.

Let's start with the easy ones. For example, in the magic of 'Fireball', it can be divided into three parts: the circuit that creates the fireball, the circuit that controls the fireball, and the circuit that ejects the fireball. If you want to take it a step further, you can add 'a circuit to control the fireball', 'a circuit to transform the fireball', and so on.

　By the time she finished saying the words, a sorcery circuit had been built on the whiteboard.

"Oh, wow...

　Each circuit is connected to form one big circuit?

I'm not sure if this is just a rudiment. ...... It's a little late now, but this board is really useful! I wish I had found this board a long time ago!

　--Then follows a lesson on magic circuits by Leila's teacher.

　Just like the magic circuit she wrote earlier, the magic circuit seems to be a combination of several circuits that work together as a single circuit.

　However, this circuit is not activated unless the beginning and the end are connected so that it can be written with a single stroke.
　Indeed, when I myself knead the magic inside my body to activate it, I need to circulate the magic power throughout my body to activate it. I guess it's the same kind of logic.

　So the magic circuit needs to be compact and able to be connected with a single stroke. .......

...... Does this have to be a flat surface?

"Yes?

No, you don't have to think in terms of just a plane, do you?

　I thought that instead of building up the circuitry on a plane, I could build it more three-dimensionally, like 3D programming, so that the sorcery circuitry could be larger and more compact.

　Yes, I explained to her, but in the middle of my explanation, I said, "No, but no?

I'm sure everyone can come up with this, and then there's a reason why it's not good enough. It's nothing, forget it--Layla?

　I'm sure you'll be able to find out more about this in the article.

I'm not sure if it's a good idea. Soooo, wow! It's the discovery of the century!

"What, oh, oh, oh?

"Nah, I see, I completely assumed that circuits are written on a plane! Then indeed, a compact sorcery circuit can be built! I'm sorry, Demon King, I could have done it! I'll leave you with this!

"Oh, wow, okay.

　With that, she cheerfully ran off with Toto, and went into her room, which was given to her.


...... continued, I wanted you to tell me.