On August 15, while Jin was in Horai Island considering countermeasures against , was talking with the magical brain in the Principality of Jagusu.

［Today we will talk about the human body.]

［How much do you know about the human body?]

<

To my surprise, <> seemed to know very little about the human body.

So <> decided to teach him the basics slowly.

［I see. Let's start with the basics of the human body.]

<>

［The elements that make up the human body can be found at .......]

The first day ended with that.

* * * * * *

Day 2.

［Today we continue where we left off yesterday.]

>

［The structure of the human body consists of the skeleton, muscles, internal organs, brain marrow, and skin. And ......]

< about the human body.

The next day,

［The nutrients necessary for the maintenance of the human body are first of all carbohydrates, proteins and fats. Minerals include calcium, magnesium, and iron. ......]

The education continued to cover the field of medicine.

<

［That's what it is. Knowing this, the use of healing magic becomes more efficient.]

On the fourth day, Shinobu I, who had continued his education up to this point, took a small gamble.

［What do you think of the health of the Duke of Jagus?]

>

［Do you think ...... he's in too bad a state?]

［I see. ...... how would you like that?]

<

［That's true.]

However, there were no engineers in the Principality of Jagdus who were capable of attaching various sensors to the magical brain.

［Do you know about the Progressors?

<

［I'm sure they can.]

At this point, Shinobi-ichi has an idea.

［

<

［I'll teach you.]

<

Thus, Shinobi I was to teach them the art of magic.

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

［I mean, the magic circuit here is ......]

<

But this was a difficult path.

<, but <> would not accept it.

Normally, such a trans-info to the magic brain is allowed only to the <> or the <> who has the same authority.

I asked < about it,

<<>>, and I was rejected softly.

If he is as good as Jin, it would be possible to force <>, no matter how much the magic brain rejects it. .......

However, we do not know how the <> will react if we do so.

It is a common sense that forced rewriting of information is forbidden. It is no different for the magic brain created by <>.

In addition, none of the engineers of the Duchy of Jagus who might be allowed to do so would be able to modify the <>.

It takes an expert in magical engineering to improve the performance of the <>, and there is a lack of knowledge to educate such an expert.

[Too bad. ......]

It seems that this road is a cul-de-sac. <

［But <>, you only identify those of the noble family, don't you?]

<>

［Doesn't that mean there are sensors to detect them?]

［That's true. But who installed it? Who installed them?　Or who adjusted it to the magic patterns of the Duke and Duchess?]

<, so there must be someone who installed such a retrofitted device.

is,

<> as it was called>>

He answered somewhat hesitantly.

Perhaps he decided that it was OK to speak only his name.

［He said, "I had no idea what that name was.]

I had no idea what the name was, <>, but he asked me no more questions and urged me to go on.

<> who made it bearable for you to use.

［I see.]

This was new information.

［Can you tell us about this ?]

<

［I am sorry to hear that. Do you know his Majesty the Duke of ......?]

<

［I see.]

That was all I needed to hear for now.

<.

For the time being, the old man decided to make a detailed investigation on the existence of .