I understand what Elsa is saying. However, it is almost impossible to cover all energy except free magic element (ether).
At the very least, it would be impossible to fly a spaceship without relying on magic.
"How can we be sure that we will have enough free magic element (ether) in space?"
"That has been confirmed first by . The first prototype spacecraft is also confirmed. It hasn't gone into lunar orbit yet, though."
In addition, there is the fact that the <> flew their spaceships here to Arus using magical technology.
"Now we just need to bring a lot of <> with us, I guess."
"......"
The old man explained the situation to Elsa, who still looked a little worried, as if to appease her.
"...... so."
Elsa seemed a little relieved to hear the old man's words.
But how far is the warp gate effective?
"Then, we may need to build a relay base in space, just like the Shinkai."
Jin nodded at this suggestion.
"Yes, that's a good idea! Erza, that's a good idea. Let's build one soon!
"And one more thing..."
Erza expressed her concern.
"What will happen to my brother Jin and me if we go to a space without any free magical element (ether)?
"Oh, that's because and the others came here before, didn't they? I think it will be even worse than that.
Theon is what we call a <>.
The mages are a race with a stronger bloodline from the <> and are vulnerable to the lack of free magical element (ether).
"In the case of mages, they will not die suddenly, but their physical condition will be seriously impaired. And if the condition continues, it will lead to death.
<<
As long as there is free magical element (ether) taken into the body and magical element (mana) metamorphosed from it, it is thought that it can be managed by supplementing it with Persica Juice and so on.
To use an analogy, we can say that we are surrounded by air without oxygen, although the pressure is one atmosphere.
It is possible to survive by using oxygen cylinders.
In other words, you can survive if you have something like a special <>.
If you have a magic tool like <>, you can compress free magic element (ether), so it is thought that you will not suddenly run out of free magic element (ether).
"It might be safer to install a free magic element condenser (ether capacitor) function in the space suit as well."
"...... Yeah."
After such a detailed explanation, Erza finally opened her eyebrows.
"But that doesn't mean we don't have to rely on magic, does it?
"Well, that's true. It's not easy to do that right off the bat.
"But, lights, air, ......
It is impossible to replace everything, so we will start with what we can do and what we think we can do.
"We'll have to test this, too. ......"
After that, I returned home with Elsa and took a relaxing bath to refresh myself.
Jin had a leisurely dinner and refreshed himself.
That night, Jin did not turn on the magic lamp. Reiko was also standing by Jin without saying a word.
"Brother Jin, what are you doing?"
Erza, wondering why the light was not on in Jin's room, came over to him and asked him what was going on.
"Oh, actually. ......"
Jin explained that he was thinking about what would happen if he could no longer use his magic. Erza looked apologetic.
"......I'm sorry. I guess I've caused you some trouble.
"No, it's okay. It's okay. It's what we need to do.
With these words, Jin turned on the magic lamp. The room became bright.
"The light ...... used to be candles in the old days. And when the power goes out, we can use a combination of solar cells and batteries for emergency lighting.
Suddenly, Jin remembered the emergency bag used in times of disaster such as typhoons.
"Emergency lights ...... come to think of it, there is something called ...... tsukiyo-gusa!"
It is a night light used in Kali village, at the entrance of Mitsuho.
Jin thought that it could be used as an emergency lamp.
"Reiko, tell the old man: ......"
Hitoshi immediately instructed him to prepare a sample.
"But don't take too many, okay?
Of course, I remind him not to overexploit.
"Well, I think I can handle the lights now."
In the darkness of space, and in a sealed spaceship, the first thing that counts is the light.
Because you can't do anything in the dark, where you don't even know where things are.
All we need now is air and water.
This one is easier still.
"All we have to do is compress air and store it in a pressure vessel made of adamantite."
The same goes for water, which can be stored in a tank.
Just in case there is a hole and it leaks, the other tanks will make up for it.
"Oh, now I can sleep well tonight."
"Yeah, that's good."
Now that his immediate concerns were settled, Jin felt much better.
Seeing Jin's face, Erza is also relieved.
"......Good night, then."
"Yeah, good night."
* * * * * *
"......"
Returning to her room, Elsa sighs softly.
Today, she was wearing the new pajamas she had made herself, but Jin didn't seem to notice, because he didn't say anything to her.
Erza was a little puffed up, saying that she had had a little trouble dyeing the magi silk into a light pastel green.
* * * *
"......"
Jin remembered Elsa who had been in his room earlier.
She was wearing pastel green pajamas for the first time, which she must have made herself.
"......I should have said something to her. ......"
I thought to myself, "I should have said something to her, ," but it was too late.
"Father, you should have said what you thought.
"Well, you know, ......"
Reiko also told him that he should have said what he thought, and Jin reflected on his inadequacy.
The next morning.
"Good morning, Elsa.
"Good morning, Brother Jin."
Erza, who tended to oversleep, woke up early when she came to Horaijima and prepared the meal for us.
"Oh, fried bean curd and okara this morning?"
"Yes."
Tofu is made from soybeans and bittern extracted from seawater, and abura-age is fried tofu. Tofu is made from soybeans, and okara (bean curd), which is made by squeezing soy milk out of soybeans, is also a fine ingredient.
At the facility, the director of the hospital especially liked miso soup made from okara, and so Jin also likes it.
The other dishes were pickled plums and pickled vegetables, and hojicha (roasted green tea).
"Ah, it's delicious."
"Good."
Seeing Jin take a sip of the miso soup and smile with satisfaction, Erza picked up her chopsticks as well.
Elsa, who had always been dexterous, had already gotten used to using chopsticks.