The conversation with Ichi lasted nearly a full day in Jin's sensory time.

Hmmm... ...... interesting.

It was Jin's fatigue that forced him to interrupt the dialogue.

"I'm sorry, but could you give me a break?

As one would expect, even Jin was showing signs of fatigue.

Oh, yes, that's right. Living things need rest, don't they?

Ichi said, remembering a long time ago.

"Take a good rest. What do you want?

A bed and a ...... room.

Okay.

As Ichi thought, a container-like room appeared. Inside there is a bed with comfortable bedding.

There is also food and drinking water. Have a good rest.

"Thank you very much."

After drinking some water and taking a bite of bread, he collapsed onto the bed and fell asleep like a mud.

* * * * * *

Interesting life form, isn't it?

Indeed. A unique stimulus to our otherwise unexciting mental activity.

I'd like to absorb what I can.

I agree. And in return, it's only fair to help them return to their world.

I fully agree.

* * * *

"...... I don't feel like I've slept much."

Jin woke up and rubbed his eyes.

He was no longer sleepy and his body was tired, but he felt a mental fatigue stagnating in the back of his ...... body, or rather, in the back of his head.

He drank the water and ate a piece of bread. Anyway, I couldn't fall down.

"I've got to get back to Ars ...... Elsa, even if I have to bite down on a stone."

I wanted to see my baby, who would be born in a few months.

Ichi spoke to me as I left the private room that had been prepared for me.

Did you have a good rest?

"Uh, yes."

That's all right. Today I would like you to teach me about magic.

"Yes, of course."

The only thing that must be avoided is offending Ichi and the other spirit life forms.

Jin recalled for the first time in a long time how to get along in his black company days.

* * * *

"......, like this."

[hmmmmmmmmmmmmmmm ...... funny!　How interesting!

Ichi felt a spiritual uplift that he had not felt in tens of thousands of years.

The skill of dealing with free magic element (ether) ...... was so interesting!

Ichi and the others, who were skilled in the art of dealing with the sub-free element "ether" instead of the free element "ether", were impressed by the magic shown by Jin, that is, the skill of dealing with the free element "ether".

Magic. < against the . Or, because it is mysterious but too awe-inspiring to bear the name of God, it is called <>law.

Since Ichi and the others had no concept of God or the Devil, they did not understand the name "magic" and took it as a skill to deal with free magical element (ether).

And what surprised Jin the most was that they had mastered the skill of handling free magic element (ether) in the blink of an eye, as they call it, magic .......

It is not a case of . I was just explaining the concept.

However, Jin thinks that this is not surprising when he thinks about it.

They are skilled in the art of handling the sub-free magical element "ether".

And perhaps the handling of free magical element "ether" is even easier than that, Jin guessed.

Yes, to the extent that a person who has mastered higher mathematics can understand the Tsurukame math.

>, this is interesting.

Ichi was delighted to have transformed a piece of meteorite ...... cosmic dust that was lying around into a complex atomic model in an instant.

Thank you, Hitoshi Nido. I can spend the next 100,000 years or so researching skills to handle this free magical element (ether).

"Well, that's good to hear."

As one would expect, Jin could only give a slightly twitchy smile.

Well, I think it's time for me to indulge in a new subject for thought. Jin Nido, I would like to talk about sending you back to your world.

"Please."

Yes. Sending you back to the world is not a problem in itself, and I am 99.9999% sure that you will succeed.

Jin thought that they were being sincere in not saying "perfect".

I'll send you back to where you came from, that's no problem. I know where you came from.

"Yes."

But the time line is not that simple.

What do you mean?

Let me tell you a story to make it easier to understand.

I will give you an example of a lower dimension so that you, Jin, can understand it.

Time flows from the past to the future. Let's compare it to a one-dimensional line.

"Yes."

Mark the long, long line itself. Let's say that this is what brings you back to the world. So, where do I mark the line?

"Ah!"

Jin understood. Indeed, it is understandable that we cannot identify the time period if we do not have something to guide us.

Even Ichi and the others are not all-powerful.

Moreover... Time is not one-dimensional. Think of it as having at least three dimensions.

"What?"

Jin couldn't help but nod his head.

Seeing him like this, Ichi tried to give him an easy-to-understand explanation.

As an analogy, things begin as a . You call it the Big Bang.

"Ah, yes."

Time begins at a point and expands to include all sorts of possibilities.

"Oh, so it's three dimensional."

Yes. Actually, it is a higher dimension, but you can't imagine a higher space than 3 dimensions, can you?

Ichi stated the facts without any apology at all.

In this analogy, time is an expanding sphere. The center is the zero point where time begins. The spheres equidistant from that point are equally spherical after the passage of an equal amount of time. The surface of the sphere represents the possibilities.

"Parallel worlds, you mean."

Well, that's all right. If we reduce the dimension further to two dimensions, the more time passes, the more choices we have, i.e., the more branches we have.

Jin understood dimly.

An expanding sphere, which means that the later you go, the more choices you have and the more possibilities you have. .......

A point in the giant sphere. That is the place to which Jin should return.

Jin could imagine how difficult it would be.

But rest assured. There will be some errors, but I promise you that I will be able to return you to the world you came from.

"Thank you."

But Jin had forgotten. He had forgotten how much of an "error" a mental organism that has spent more than tens of millions of years in the world can make. .......