When Jin was considering what to do with the spherical base.

"Interesting.

Saki was conducting a materials engineering analysis of the control core with a back door.

This is a sample that Jin obtained when he repaired a golem at the mayor's house in the town of Urau.

"I'm not sure if you can call it magi plastic, just ......, but it's a synthetic resin."

Saki tilted her head, "With this molecular structure, I have no idea how it was synthesized.

"Even my sister Saki can't do it?"

"Oh, Elsa. ......Yeah, even I can't do it right away."

"Then the synthesized it must have some serious skills."

"Well, that's true."

"Though organic chemistry is still in its infancy," Saki said.

"I'm sure we can make more progress if we go to Hale and ask the to teach us, but now that we have the subject, I'd like to work on it."

"That sounds like Saki. So, what else did you find out?

"The origin of these magical crystals."

Did you find out?

Of course. Of course. They're not synthetic, that's why each region has its own unique characteristics.

Impurities?

Yes, that too. And the crystal structure, for example.

Saki said that she had compared these characteristics of the different regions.

"That's my sister."

"Thank you."

"So, where does it come from?"

"Around here."

Saki, who had prepared a map of the Laurent continent, pointed to a point on the map.

It was a mine located in the eastern part of the Kingdom of Cerroa, south of the Rivas region, near the border with the Kingdom of Egelea.

"The Hoopla Mine?"

"Yes. It is most likely from here.

To reach the Hoopla Mine from the town of Ula'u, follow the road southwest to the town of Ixpi. From there, turn southeast and go south from the town of Fatai.

You will arrive at the Hoopla Mine.

It is an excellent mine that produces many magi crystals. It contains about 0.0001% lithium as a characteristic impurity.

So you're saying that the control core in the sample contained lithium.

"That's what I'm saying. As far as I know, there are no other mines that produce magi crystals containing lithium.

By the way, an impurity of 0.0001 percent is nothing to worry about from a magical engineering point of view.

It is only at about 0.01 percent that they begin to have an effect.

In other words, the magecrystals here are pure enough and of high performance.

* * * *

"Oh, old man, I've been waiting for you.

Saki had told the old man when she found out that the ore seemed to be from the Hoopla mine.

And the old man immediately started his own investigation.

<

"What?　...... hmmm...is that sort of what I expected?　Tell me more about it."

<>.

"Also <<< distributor>> is ......"

<<

"Yes, indeed. ...... you are working for the old man, aren't you?"

<

"I guess so."

The old man said, "It would be a waste of time if they find out about us in a hurry.

"That's true.

Saki also felt that we were not to be underestimated, judging from what had happened so far.

"But it's good to know that the spherical base has been settled."

Erza said.

<

"That's right. Erza is right, the mastermind is in the backdoor.

The mastermind is not a simple person to deal with, Saki said.

"Old man, is there anything I can help you with?"

<

"Kuhu, I'm glad to hear that."

* * * * * *

.

The old man activates his peepers.

He focuses on the Hoopla Mine in the Kingdom of Selroa.

The mines here are mined in a series of tunnels alongside each other on what appears to be a fault cliff. The tunnels were numbered in order, with M1 in the east (M for Mine).

Due to its format, the tunnels are characterized by vertical rather than horizontal branches.

For example, the first tunnel is dug almost horizontally, and when it branches off in the middle, a side passage is made, but instead of extending horizontally, it immediately turns downward and is dug at an angle.

The remaining 6 tunnels are privately operated.

operated the west end tunnel ......M31 with two other stores.

However.

Three tunnels were found that were dug secretly.

> because it is possible that behind the official operation of the tunnels, there is unofficial mining as well.

The old man will take time to observe and evaluate the situation.