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Jin and Reiko were traveling together in a carriage invited by Reinhard, a nobleman of the Shoro Kingdom.

Now, the carriage carrying the group is approaching the fortress city of Breuland.

At this point, Jin made a proposal.

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"For now, I would like to go home and prepare to receive Reinhardt and the others.

That's why.

Both Reinhardt and Erza were very much interested in the idea of inviting them to Jin's house, and they agreed to the proposal.

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"Then, I will pick you up at the gate tomorrow morning. But maybe only the two of you can come with me."

I remember to remind him that if Adberg the butler, Meine the nanny, or Hermann the guard came, it would be too much to handle.

"Yeah, no problem, I'll look forward to seeing you tomorrow!

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"See you tomorrow, Jin-kun."

With such a light heart, Jin and Reiko parted from Reinhardt's group and walked for about an hour to the warp gate hidden in a cave deep in the forest on the outskirts of Blueland.

"It is undamaged, and there seems to be no sign of intrusion by anyone.

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Since there are two types of wards, one for concealment and the other that cannot be removed except by Jin's magic pattern, small animals and people who happen to be in this area will not be able to find out the presence of the warp gate.

Jin and Reiko entered the cave without any difficulty and went to the warp gate.

In an instant, they were on their way to Horai Island.

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In an instant, they are on Horai Island. A nostalgic atmosphere envelops Jin.

"Welcome home, Father.

"Welcome home, master and daughter."

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Soleil, Luna, and the five colored golem maids were there to greet him.

The first thing Jin did was to take a bath.

He was a little tired of traveling by carriage, and moreover, he had not taken a bath for two days in a row.

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"Ah, it's warming!

"Father, are you tired?"

Reiko was soaking together with him.

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"No, I'm not tired, but it's nice to be home.

"Master, may I give you a report?"

In order to save time, he decided to call the five-colored golem into the bathroom to hear its report.

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The development of Horai Island is going well.

Road construction, port construction. Orchards and rubber trees are cultivated, fish are raised in fish ponds.

Quarrying and preservation of stone, mining, classification and storage of mineral resources.

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And the Air Force (Air Force), Navy (Navy), and Army (Army) report.

Skye and her team seem to be doing a good job of mapping.

Marin and his team have scout boats around the island at all times to keep an eye out.

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Well, for the moment, ships of this world do not come out to the open sea because they do not have a compass or a compass.

And Lando and his men are guarding the islands of Horai and Kunlun while helping with development.

"Ah, I wish I had a brain while I'm gone.

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Soleil and Luna were not enough.

So, Jin got out of the bath and immediately decided to put his idea into action.

"Let's collect all kinds of Magi Crystals.

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I prepared 8 Magi Crystals of each attribute: earth, water, fire, wind, lightning, light, darkness, and all the other attributes.

Place all the attribute Magi crystals in the center of the plate and the remaining Magi crystals around the center of the plate.

A magi-device is assembled so that each of them can mutually circulate their magical power through the magical crystals of all attributes.

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"Okay, let this be the brain. As energy sources, we have an ether converter, a mana driver, and a spare mana tank.

Safety measures have been taken to ensure that the machine will not stop in the event of normal problems.

"The chassis is made of adamantite and mithril."

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The whole structure is a hemispherical dome. The radius is about 50 centimeters.

To prevent the computer from revolting, as is often the case in science fiction, we have written in several layers of magical formulas for safety.

It senses Jin's magic pattern and obeys only him. And a destructive device that can be activated only by Jin is also installed.

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Basically, this brain stands above all other golems.

The only exception is Reiko. Reiko and this brain are equal, and they monitor each other so that they do not run out of control.

Reiko is superior in power and this brain is superior in intelligence.

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Finally, most of Jin's knowledge, Soleil and Luna, Prane and Satella, the five colored golem maids, Sky, Marin, Lando, etc., all the knowledge of the golems, are transferred to the brain who manages Horai Island, named <. The reason why he did not transcribe Reiko's knowledge is for the purpose of surveillance as mentioned above.

"Father, what do you mean by <>?"

"Oh, he is the chief of the immortals who were said to live in Horai and Kunlun in my former world.

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I may be wrong about some things, but that's not the point, so I'll let it go.

"<> start up."

Jin activates <>, the man in charge of Horai.

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"Master, please take care of my lord."

"Okay, Lao Tzu, is there anything wrong?"

No, not at all.

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You know what you have to do now?

Yes, no problem.

Good. Good. Keep me posted on your progress.

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Yes, sir.

Thus, the brains to take care of Horai Island and Kunlun Island were born in place of Jin.

"Now, you can rest assured even if I am away. If you have any problems, consult < first. And report to me regularly."

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"Yes, sir."

The golems replied in unison.

* * * *

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"Father, I have a favor to ask you."

Unusually, Reiko asked Jin for a favor.

"Yes, what is it?"

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"Please don't let that golem defeat us in the Albus riot the other day. And I want to be able to never attack your father."

"Reiko ......"

She seems to be worried that she couldn't confront directly for fear that engineering magic would rewrite her control core.

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"Okay, come here."

Jin then invited Reiko to a workshop in the institute and laid her down on a workbench.

"All right, let's stop for the time being."

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"Yes, sir."

In fact, Jin had been thinking of countermeasures since the incident.

The first method was to use a magic shield.

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After stopping Reiko, Jin decided to shield the control core (control core) with the highest quality mithril silver to protect it from external magic power.

The surface of the shield is engraved with the Magi Formula, which can convert external magic into free magical elements (ether).

Second, protection by magic patterns.

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The magick formula (magick formula) and the magick circuit (magick circuit) were reconfigured so that only Jin's magick patterns could be rewritten. This was quite a difficult task.

"Shall we also have a spare control core?

Thirdly, we modified the control core so that the backup control core can take over in the event that the main control core drops out. The main control core (control core) will still be located in the chest, and the backup in the abdomen.

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"We could incorporate another safety device."

It is a kind of breaker. It is a kind of a breaker. It is just a magical device that instantly cuts off the magical power for movement when an attacker tries to attack an opponent with Jin's magical power pattern.

< has a similar device. However, these devices have the condition that <> is the case that <> would be disadvantageous to Hito>. In other words, <>.

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"Well, since we're here, let's do the overall maintenance.

Reiko's body is checked, and any parts that are damaged or worn out are repaired or strengthened.

Furthermore, the ether converter and mana driver are adjusted again. This has improved the efficiency and increased the output by 10%.

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In addition, a hide function, which can be called a stealth function, was added. Combined with the ability to block out air and magic, as well as the ability to muffle sound, it has a much higher level of functionality than the one used by the bandit.

We call it the "stealth" function. Just as it should be.

"Okay, Reiko, <>"

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Reiko gets up,

"How are you feeling?"

"Yes, I feel lighter than usual. Thank you, father.

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"Well, that's good to know."

Actually, my weight has increased by about three kilograms due to the additional spare control core, magi device, mithril silver for shielding, etc., but I guess it's within the margin of error. I've also increased my power output.

So, Jin decided to keep quiet about it. I explained about the additional functions.

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* * * *

Reiko's modification was finished,

"Well, I wonder how things are going in Kunlun..."

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After eating lunch prepared by Soleil, we finally decided to go to Kunlun Island to prepare for welcoming our guests.

"Father, how should we set up the warp gate?"

Luna asked. As it is now, we cannot fly directly to the Kunlun Island from the Blue Lands. We would have to go out once inside the institute. That is undesirable.

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"Well, ......, we should install another warp gate in the Blue Lands so that we can fly directly to the Kunlun Islands.

"Yes, that's a good idea. I think that would be a good idea.

agreed, and we flew to the Kunlun Island with the necessary materials. Of course, Reiko carried the materials.

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