A very charming voice was heard in the Yamato as it began to soar in the sky again.
The culprit of that voice is Isolde. She is cleaning Satoru's weapons, the Giant Killer and Levatein, with a whetstone and other tools, and occasionally raise a lusty voice.
Now, there is a bit of an explanation for this unusual situation.
Liz had gone to the bathroom in the morning, and when she came back, she looked a little angry. Isolde was walking apologetically behind her, and Satoru smiled bitterly, thinking there must have been some minor trouble.
「Onii-san」
「Hm?」
「Can't this stone be rounded so it doesn't have corners?」
Liz, still a bit angry, offered him three stones the same size as a copper coin (Denarii). Incidentally, the size of a copper coin is about the same as a 100 yen coin.
「Huh. Well, I guess it's not impossible. Let me borrow it.」
After receiving the stones, Satoru thought for a moment, then gripped the stones in his right hand and began to twist them into the palm of his left hand. He imagined that he was hardening the palm of his left hand, and began to sand it.
After about a minute of doing so, the three pebbles were successfully formed into a sphere with corners removed, and he compared each of the three pebbles to make sure there were no corners before handing them back to Liz.
「Here, is this enough?」
「Thank you, that's enough.」
Next, Liz walks over to Rico and receives the bird's entrails ― probably intestines ― and rinses them with the stone. Satoru has no idea what she is going to do.
Liz nods yep, rubbing and washing the bird's intestines, which stretch like rubber, and tying one mouth shut, then putting three pebbles in the other mouth and tying the mouth closed.
「Isolde-san」
「Mm?」
Liz, smiling devilishly at Isolde, who was helping Rico prepare the meal, held up the bird's intestines with three round pebbles in them.
「I'm going to ask you to put this in there.」
And so it goes.
Now, a bird's intestines with three round stones in them are in the secret place of the beautiful female swordsman. Isolde's face became quite pale when she was told to live a normal life for the time being in that state.
Even the slightest movement would cause the stones in her vagina to move and stimulate her, causing her pale face to blush at all times. Of course, she was not allowed to take it out without permission, and she was also warned to put on her underwear to prevent it from being ejected. Liz's face was said to be full of a sense of taste as she sentenced her to wear it even when she sleeps.
「...... quietly Liz is a demon, isn't she?」
Rico's mutterings with her ear to Satoru, to which Satoru replies with a wry smile. It may not be a retort to something that happened, but it is harsh.
But at least the method would be effective, Satoru thinks. It's a rough treatment, to be sure, but she's not going to get rid of that firmness anytime soon unless she does something like that.
The morning workout after dinner was also ordered to be done in this state, and Isolde was seen by everyone watching the workout, writhing in agony and losing her balance many times. Her expression was unusually tinged with shame, Satoru thought.
「.......Even I wouldn't go that far.」
Aside from Leia's mutterings of amazement and admiration, Liz and Solor are discussing something in hushed tones. Minerva seemed to be surprised.
How will Isolde change in these three days? Honestly, even Satoru couldn't read it.
Anyway, after Isolde's training was over, Yamato began to surface. It has resumed its voyage toward Nevis, the Sacred Mountain.
「Is it clouds below? I can't tell where we are flying.」
A quarter of a koku into the flight, Satoru stepped up to the cockpit and looked at the scenery below, and muttered to himself. There were thin white clouds all over the sky, and it was probably raining lightly below.
「According to my calculations, it should be somewhere around here.」
Leia points to a rough map of the world on the wall of the cockpit. The pilot is now Solor, and Leia is in the cockpit, squeezing her small body into the cockpit to analyze the chanting of the 【Otherworld Summoning】 art. According to the map, the Dragon's Claw is already out.
「We should go down below the clouds once in a while and check it out. Even high in the sky, there's always wind dancing around and pushing this airship away.」
「Understood. Come to think of it, Master's cell phone also has the jet stream」
「.......I see you've been reading a lot.」
Satoru still lends his cell phone to Solor for about a koku(4 hours) a day. With that much use, the battery charge runs low quickly, and he has to recharge it with solar cells every day, but if it is used too much, the cell phone will eventually stop working. Satoru is a little scared that he might lose his connection to his original world.
「Speaking of which, how's Leia doing with the letters in my world?」
「I haven't worked on it yet. I haven't made much progress in learning the art of 【Otherworld Summoning】.」
It seems that the chanting of 【Otherworld Summoning】 is so difficult that even Solor was demanding time on the order of years to learn it. It seems to be taking a long time to unravel. And that's not all she's doing now. She is also working on the chanting of arts to be applied to Yamato's exterior at the same time.
When Satoru said, "I'm sorry for all the trouble I've caused you," Leia smiled and replied, "It's okay". He really can't get his head around this first magical slave.
In the cabin, everyone is spending time in their own way. Isolde is blushing and tending to his weapons, while Liz is learning to write from Rico.
Minerva is looking at the 【Shrinken】 horse in the iron box and pressing her body against it. She does not look well. He goes to Minerva's side and sits down next to her.
「Are you still feeling a little sick?」
「Unn.....Minerva is feeling a bit drunk~」
「That's a long time to be drunk.」
Satoru pat Minerva, who has her head on his shoulder. She is not in terribly bad shape, but she must be slightly out of shape. She is a creature that originally flies in the sky, so she may not be used to flying without her own power, but then again, she did it yesterday, and he thinks she could get used to it a little better.
Rico, who had been watching the two of them, said, "Oh"
Satoru thought to himself. Even if that were the case, it seemed too early for morning sickness to appear, but the child in Minerva's womb was already out of the ordinary, so it was no surprise that these symptoms appeared so quickly.
Satoru, who remembered from his dim memory that low blood sugar was one of the factors that worsened the morning sickness, asked Rico to bring out some candy and let Minerva lick it, while at least staying next to her and giving her a light hug.
「Nufufufu ...... Minerva is a little happy」
Minerva smiled as she slid her face into Satoru's chest. Stress reduction is also said to help ease morning sickness. If you think it's bad morning sickness, for example, the smell of bear fur on this Yamato's cabin, or the smell of steel in the first place, might be having a negative effect on Minerva, Satoru thought to himself.
「Tell me if there's anything you want me to do, okay?」
「Unn. But, Danna-sama?」
「Hmm?」
「Don't be all about Minerva, okay? You have to be nice to everyone.」
「...... Minerva is a good girl.」
Satoru patted Minerva on the head with deep emotion. She is no longer the uninhibited girl who was obsessed with intercourse with Satoru and relentlessly sought it without thinking about her surroundings. She has also grown up to be aware of her surroundings.
「Nfuu」
Minerva smiled ticklingly when Satoru praised her. She seems to have calmed down a little.
When he put his hand on her head down to her shoulder and patted her gently, Minerva's eyes narrowed in fascination, and she relaxed and was sweet to him. Minerva has been unable to have intercourse for some time after conceiving a child, but an encounter with a girl named Hannah has turned her into a woman who can tolerate it.
「But ...... sometimes Minerva wishes she could sleep with Danna-sama. Danna-sama has sex at night, so the last person he had sex with and Danna-sama go to bed together, so Minerva hasn't been able to sleep with Danna-sama lately.」
That reminds me, Satoru thinks. Satoru sleeps with the women he has shared a bed with, as a sign of gratitude to them. It is true that he has not been able to sleep with Minerva, with whom he has not been able to have sex for a while. The last time he slept with her was when they were on their way to Clatta and they were in Mistletoe of Normad, and she was complaining that she wanted to have sex with him.
「Oh, ...... sorry Minerva.」
「No need to apologize. But sleep with Minerva sometime, okay?」
「Of course.」
Since Solor leaves Satoru after the event, Satoru thinks that there is no conflict in sleeping with Minerva after having been with Solor. Leia is the same in that she does not sleep, but he spoils Leia for a while afterward, so he is at his best when he is with Solor.
Minerva, who had been pampered by Satoru in a relaxed manner for a while, went straight into a nap. Like Minerva, he thinks that Rico, who is always so vigorous, is not doing so well either. Isolde is currently in training, but Liz is doing as well, as usual, so he wonders if there is a difference in their adaptability to this environment.
As Satoru was absentmindedly thinking about this, a flash of inspiration flashed through his mind. Slowly, so as not to wake Minerva, who was taking a nap, he moved away from her and headed for the cockpit.
「Solor, what is our altitude now?」
「About four miles.」
「Please lower the altitude a little」
What passed Satoru's mind was the difference in atmospheric pressure. This Yamato is not exactly pressurized. The technique applied to this aircraft has created a thin film of air, but even that may not be strictly accurate. The unaccustomed change in air pressure may be having an adverse effect on the physical condition.
If that was the case, he thought, why not pressurize the cabin? But of course, there was no way Satoru would know how to pressurize the cabin. What he came up with was a different method.
「Leia. Can you put a film of air around this room like a 【Ward】, separate from the fuselage?」
「Wait a minute. Liz, will you take over the controls?」
「Okay」
Speaking to Liz in the cabin, Solor and Leia talk to each other with their foreheads pressed against each other.
Leia's concern was the override of the art. She wondered if the art applied to the outside of the plane would be erased by the art applied to the inside, but Solor answered that it would depend on how the art was applied. She said that if it was placed on the inside wall, there was a possibility that it would react with the art outside, but if it was not art, but a Ward type, there would be no problem.
Why go through all that trouble? Satoru tells Leia about the air pressure when she questions it.
The higher up in the sky, the thinner the air becomes, which Leia also knew. Satoru took out a convenience store bag from his backpack and explained to her that Rico's complaint about not being able to sleep well might have been because she was in a place where the air was thinner.
When the bag was filled with air in the lower world and taken to the upper world, it would puff up. Leia is convinced by this explanation. He added that the human body is the same way, and even Leia looked horrified when he told her that a sudden jump to thin air or an airless world would cause the human body to explode as well.
「So I was thinking maybe we should cover this room with a film of air. It seems that the art applied to the outside is a little better, but I think doubling it up would make things a little better.」
「I see ....... I understand your point. However, if we use 【Ward】, we might not be able to contact Sheryl, for example.」
「Ah, ......, I forgot about that.」
He doesn't know the principle, but if you are within the range of the 【Ward】 art, you will not be able to communicate by 【Communication】 or other arts. Solor, who had been looking thoughtful ever since Satoru was explaining about the air pressure, stroked her chin gloomily.
「Solor?」
「...... simply think it would be better to cover the room with a box of air. But, Master. It's been documented that if you put a person alive in an enclosed space for an extended period of time, the life in it will die. ......」
She must have been thinking of a solution in her own way all along. Satoru also notices Solor's point.
「Asphyxiation, huh ...... That's a possibility. It occurred to me, was it an opal? If you let a gentle breeze happen in that thing, won't it be fresh air in the ward?」
「If you simply want to create a gentle breeze, there is a wind crystal stone. I found it in the treasures of Ingolshenes.」
Satoru's shoulders slumped. It seems that there was a wind crystal stone in every building in Deligrande so that the stagnant air of the town would not enter the building. It's like a simple air conditioner.
「Say it first」
「Because I don't know much about that air pressure thing.」
Satoru pats Leia's head, who puffed out her cheeks cutely, with a wry smile. This attitude makes her look like she's of an appropriate age.
「I don't know that much either. Don't sulk.」
「If that's the case, no need to say anymore.」
Solor nodded broadly and carefully created a box of air with sorcery to match the inside. She immediately took out a wind crystal stone from Leia's luggage and placed it in the corner of the room to activate it.
It was midday when Minerva, who had dozed off, noticed that Rico's health was gradually improving.