After moving Saki's birthplace, Jin consulted with Reinhardt.

"What should we do about <>?"

"Well, it would be next to impossible to grow the same ivy as that one.

Whether we move it or recreate it here," Reinhardt says, "the building can be done, but the ivy covering the walls will be out of control.

"So you want to go to ......?"

"I think we should have a replica built and let the ivy crawl slowly."

Jin nodded.

"Would that be okay with Bertsche too?"

Reinhard nodded at this.

"Yes, we talked about it yesterday."

"I see."

At this point, Jin made a proposal to Reinhardt.

"By the way, Reinhard, I have an idea I came up with the other day.

Of course I do!

Of course!" "All right, I'll take care of it."

Jin then moved to the cafeteria. He gathered everyone together.

"I came up with the idea of a duplicator.

"<>?"

Reinhardt asked in return.

"Yes. It's a magi-machine that analyzes the size, structure, material, etc. of an object and creates an identical object."

Jin imagined something like a combination of a 3D scanner and a 3D printer.

"I see, that sounds interesting."

"Isn't structural analysis a lot of work?"

"I don't know how to do it. ......"

Some were interested, some pondered the difficulties, and some had no idea.

"If it's simple, I don't think it would be too difficult."

Jin asked Reiko to prepare a cup made of light silver and a lump of light silver to show him an example.

"Then, the cup is subjected to to determine its material and size. At ......, we use that information to < it."

"Oh!"

We have a cup that is exactly the same as the original cup.

"This is a single material, but I'm hoping to make something more complex."

"Yes, it's very nice, isn't it?"

Bertsche agreed, imagining its value.

"But it won't be easy, will it?

Saki expressed her concerns.

"The most important thing is the material. Even if we can analyze what the object is made of and what it is made of, it is not easy to prepare the same material.

"That's right.

The goal is not to make it look just like the object, but to make it exactly the same.

"So you need to prepare the materials while researching the subject.

"Yes, that's right."

"We can imitate the shape of each part, but it will be difficult to make a magi device."

"Yes, I guess so."

Even after a short talk like this, it is clear that it would be difficult to create a duplicator.

"For example, if I leave the hosting to you, can we use a duplicator to prepare materials each time?

Jin has an idea.

"I don't think it would be possible without that much work."

Reinhardt nodded and Saki also nodded,

"Kuhu, it would be easier if we could synthesize the elements.

Saki also nodded and said, "Kuh, it would be easier if we could synthesize the elements.

* * * *

Although they have only discussed and not come to a conclusion on the the other day and the this time, the members of the Jin family are fond of these kinds of discussions.

"Maybe someday, by some chance, we will come up with an idea that can solve the problem," said Jin.

Jin said.

"That's right. I get good ideas while I'm doing unrelated things.

Reinhard agreed.

"But brother Jin, I think it would be good to make a that can be duplicated with a single material."

Erza suggested this to Jin.

"Yes. We can use them to make parts.

"Besides, while you're making such a machine, you might get some ideas.

"Yeah, that's true."

"Oh, I know what you mean."

Jin and Hannah agreed.

* * * * * *

"So, about that blinky transmitter we were discussing the other day..."

"Yes."

Hitoshi resumed.

"Since we've deviated from our original goal, I think we should first try to formulate something that goes back to the basics."

"Yes, that sounds good, but what exactly?"

"We'll put a highly visible lamp on the top of the control tower and use it as a signal with a specific blinking pattern."

And Jin.

Reinhardt says, "You've simplified it a lot, haven't you?"

Reinhardt says, "It has become so simple," but that was the original idea.

"I think we should make the signal with a pattern common all over the world, and create a lamp ...... with good visibility, maybe orange or something.　I think we need to make a signal with a pattern that is universal and a lamp with a good visibility maybe orange or something."

"Then we can increase the amount of information by changing the color."

Elsa spoke up with an idea.

"I see... red and yellow, with the red indicating the course and the yellow indicating the speed..."

"Hmm, that's a good idea, and if we can increase the number of colors, we can send information to several aircraft at the same time.

If we put red for A, yellow for B, and green for C, we can send instructions to three planes at the same time.

"If we use green, the visibility will be worse in fog, won't it?"

"Nope. So I think it should be limited to clear skies."

It is dangerous to have multiple planes and balloons take off and land at the same time when visibility is poor to begin with, Elsa concluded.

"That's true. But it might be nice and simple."

"Kuhu, I guess that's how ideas start."

Saki said impressed.

"Then I think we can leave it to <>.

< should be notified and standardized among the nations.

Everyone agreed on this.

"By the way, are they still giving lectures on the ?"

Jin muttered something that caught his attention,

The second lecture is supposed to start on August 15.

Jin nodded.

"I see. I guess I can talk to him now, though it would be a misnomer to say that I am free ......."

So he decided to visit the next day.