Jin is not familiar with electronics engineering. He only has a general knowledge of common sense.

There are several methods to increase the capability of artificial brains, and this time, Jin came up with a method that seems to be rather old among them.

It is the concept suggested in <<700672>>, <>.

The center of the "Mere Old Man's" thought process is the magical crystals of all attributes.

The idea is to change them to the <> attribute.

It is empirically known that the magic power with the highest frequency is of the dark attribute, but that of the light attribute is the easiest to control.

The idea is to apply this to the control core.

In the case of a PC, it would be equivalent to increasing the clock frequency of the CPU.

Naturally, we will not stop there, but will also enhance the subsystems.

The storage space has been increased tenfold, and an auxiliary control core (control core), which should be called a co-processor, has been added.

This has increased the number of multitasking ...... that can be done at the same time.

This is because of the need to operate terminals such as Lao Tzu, Machina, and John.

"What do you think, Mr. Lao?"

Jin smiled and nodded.

"Yes, I'm counting on you."

* * * * * *

Now, this is the Shoro Kingdom.

had passed through the channel and was out to sea.

"Oh, it's bumpy."

Unlike the calm lake, the sea with its swell seemed to be a little different, and several sailors were down with seasickness.

"Pull yourself together!　We're not going to get sloppy like this!"

However, seasickness is not something that can be overcome by sheer willpower alone.

It seemed to take a little time to get used to the rocking caused by the big swell, which was different from the small boats we were used to riding.

The boat was a little bumpy, but it took some time for me to get used to it.

"Good work, Jin."

Jin had come to the village of Kurtz in Reinhardt's territory.

He had finished his work and wanted to have a relaxed talk with everyone.

To make it an official visit, he had taken an airship to Lankenhaos.

"Oh, and Reinhardt..." "Erza is doing a great job, too.

"I heard that Elsa was also very successful."

Bertsche is also in a good mood now that Reinhardt is back after a long absence.

"I'd like to see a 40-meter ship .......

"You get to go to so many places. I envy you.

"Oh, Jin-kun can take you anywhere you want if you ask him.

And Saki is visiting, too. Naturally, her father Toa and his fiancée, Stearina, are there too.

I wonder what happened to Mr. Eckert's ship.

Vivian is also invited. In other words, the Jin family is all here.

So, of course, there's one more.

"Elsa,...... how is she?"

And Meine, too.

"Hmmm... She's calmed down, but she's not the same as before.

"but not back to normal. ......"

The brain damage was beyond the powers of science or magic.

"Well, I've got a few things to tell you."

When he had calmed down, Jin started to speak.

"It's about the different ethnic groups."

With that one word, all became quiet.

"I've done some research of my own. ......"

Jin briefly explained what he had found so far.

The are a different tribe, they are very advanced, and they do not seem to have any intention to invade.

< after reading the information.

"I'm just guessing from this point on," he said.

After a pause and a preface, Jin began his explanation again.

"It seems that the country has some kind of connection with the previous generation of magical engineers, the Magecraft Meisters.

"With the previous generation, you say?"

It was Reinhardt who asked back.

"Yes. I'm only guessing, but I'm basing this on a man called <>, <>."

"Tsetsi?"

Elsa asked again.

"Yes. Yes. He has the same surname as Adriana Barbora Tsezi. But I'm even more attracted to the name Shuki.

"What do you mean?"

Saki asked, tilting her head.

"The name Shuki is in my world too. Not only that. There are many place names like Seki, Kari, Miyako, and others that I can only assume are Japanese in origin.

In fact, one of my classmates was named Shuki," explains Jin. Of course, this Shuki Tsezi is not the same person as Shuki Tsezi here.

"I see. Jin-kun, in short, you are curious about him, aren't you?

Toa guessed what was in Jin's mind. I guess age has something to do with it.

Yes. That's just curiosity. But I think we should have a good relationship with that country.

Jin told him about asphalted roads, bicycles, and dried bonito flakes.

"Hmm, asphalt. That's certainly a technology we don't have here in Ogunkuni."

"I guess you could say that instead of magic, they developed <>."

"Dried bonito flakes. What kind of foodstuff is it?

Reinhard, Toa, and Bertsche responded in three different ways.

"Yes. So, I think we should open diplomatic relations peacefully. ...... civilization is also a concern. If you care about ...... dried bonito flakes, you should try them next time you're on Hourai Island."

"Diplomatic relations ...... are difficult, but it would be good for the country if it were possible. ......"

"Kuhu, it's an interesting country, isn't it?

"I'd like to try it, Jin-sama."

The day ended with such talk.

Jin-sama, I have a story to tell you.

That night, Meane came to Jin's room.

"Yes?"

Meane looked more serious than ever. Jin sensed an unusual atmosphere.

"...... it's about Elsa."

"Yes."

"Jin-sama gave Erza a new ring, didn't he?"

I'm talking about the guard ring with aquamarine.

"Oh, yes, I gave it to her."

"...... I don't ask if you can make Erza happy. She seems to be happy when she's around Jin-sama.

"......"

"But, please say hello to her mother-in-law, Marlene ...... at her parents' house, even if you don't want to say hello to me."

"Ah."

As for Jin, he had given Erza a ring, and that fact alone was enough for him.

It was not a formal engagement, just a ring that he gave to Elsa to respond to her feelings.

"...... I understand. I know that's not an engagement ring or anything like that.

"...... sorry."

The ring finger of the left hand is the finger of love, so even in this world, engagement rings or wedding rings are often worn. Especially for aristocrats.

But Jin, who had heard that common people do not care so much about it, still thought he had given the ring with all his heart.

"Okay. Anyway, I'll go there tomorrow.

"Please do so."

Come to think of it, Jin had never met Elsa's mother-in-law, ...... Mrs. Randall.

"Oh, it's ...... inimical to courtesy, isn't it?"

Jin was a little depressed.