Isaac started making decent shapes of balloons.

Draw basic designs first.

The first problem was still the size.

There is suddenly no such thing as a human being able to board.

I don't know if materials exist that can be used for balloons.

In the previous life there were light and sturdy materials, but because I don't know if they exist in this world.

- How much weight can a balloon of one cubic meter in volume be lifted?

Maybe he was learning the weight of gas being lifted in class, but he didn't remember Isaac.

It doesn't make sense if you can't even lift the weight of the material used for balloon skin using thick, sturdy materials.

All you have to do to solve this is make it some size.

The larger the size, the greater the volume inside.

Unless you used a material that was so heavy, it was supposed to be more likely to float properly.

I face the question of whether to try it from something small or something a little bigger.

So Isaac decided to try something a little big.

If it's about two meters long or horizontal, it should float on any fabric because there should be a lot of buoyancy.

Besides, I figured that maybe it wouldn't even tear at the ball skin's own weight.

The next day, I told the two of them about this proposal.

Lucas, who listened, asks Isaac a question.

"I'm not sure, but if the force is applied, the seams won't tear? Not only does the yarn cut, but the fabric may tear better."

"I do have that worry. But we already have the solution."

Isaac smiles and shows a small ring-shaped thing.

I gave him the idea of a snap button. That's what the Gray Chamber of Commerce finally made me.

"When it comes to hatchlings, it's hardware that makes it harder to tear the cloth even if it's bracketed hard. I think it will be used for shoes from now on."

It was a piece of hardware about holes through shoelaces with sneakers, etc.

"Because of the similarities in shape, at the end of the snap button," what I had given the idea helped.

plain, but will surely be used all over the world from now on.

This is how Isaac exists when he needs it, because all he could think of was something small and familiar.

I'm glad I'm not a big guy, it's one of the few examples.

"Tie the stronghold tightly with a thick-eyed string and sew it with regular thread to prevent warm air from leaking. It won't tear anywhere near the seams."

"You already had measures in place..."

Not only Lucas, but Raymond also wraps his tongue around Isaac's readiness.

It seems that they do not need to make it together.

But there's no such thing as a perfect person.

Sometimes Isaac also shows where he has fallen out.

For the sake of confirmation, I think we should ask questions.

"But wouldn't that leak warm air? If you had a hole like that in the fabric, you'd get out of there, right?

Now Raymond asked the question.

He is aware of the difficulty of handling the air because he was enrolled in the science department, albeit for a short period of time.

Just like water, it leaks out of a little gap.

Isaac will also know, but points out that warmed air leaks out of the gap.

"I will instruct you to use the perfect thick string for the hatme as much as possible. But you'll be able to do the gap. But you have this."

Isaac shows the two of them a rind bowl.

There is still rice paste inside that Claude had made yesterday.

"Not only does it apply thick to the hatchling area, but it also sews on the fabric border to make air leakage more difficult. I don't mind Nikawa, but Mr. Claude made it for me, so I'm going to try using rice paste."

"Right. You were sticking paper together. It could certainly be used to fill the gap."

"Yeah. But I don't know if I can do it without trying. How about this charcoal pod over here?

Isaac was going to use charcoal to warm the air.

I'd almost install a burner in a previous life, but there's nothing like that in this world.

Therefore, I was thinking of using charcoal for thermal power and installing a mesh section called "Kibo" at the bottom of the balloon, which I would use when boiling the ramen, into a fuel pocket.

"I honestly don't know...... Do you have the firepower you need to heat it up?

"Not a small place to add charcoal compared to a balloon? Shouldn't we be able to put a lot more charcoal on it?

They seem to be concerned about the size difference between the balloon body and the suspended objects because they are unknown objects.

Isaac knows that in order for it to float, the balloon body has to be bigger.

That difference in perception was emerging in the form of questions.

"It's not like I should put a lot on it. Because if you're going to float in the sky, you're going to have to lighten it up a little bit. Even birds look big with fluffy hair, but when you hold them, they're light for their looks, right? At first, I'm going to try to make it as light as possible. But I think the idea of putting a lot of charcoal on it is a good idea. I also want to find out what happens with the difference in firepower. Let's have a few different sizes of fuel put in."

But Isaac didn't deny it.

I'm the only one who knows about balloons.

If you're coming up with an idea, but you deny it head-on, you're likely to shrivel and stop saying new ideas in the future.

Besides, the Braak Chamber of Commerce, which handles clothing, asks you to create a balloon body.

Ask the Gray Chamber of Commerce to make the fuel inlet part because it will be made of iron to prevent it from burning with charcoal.

Hanging from the balloon with a string or chain, so it's not as hassle as having a replacement part made separately.

Isaac was of the opinion that opinions should be incorporated in order not to shred their motivation.

"In the meantime, let's use this as a way to wash out the problem and connect it to the next one. It's the first time, and it's natural to fail. The important thing is to learn from failures and not repeat the same mistakes. Don't hesitate to ask me any more questions."

"Okay."

"I'm looking forward to seeing what happens."

Me, too.

It's not like there's a textbook like an experiment in science.

Isaac also felt the excitement of creating it by hand.

----------

I needed a week before I could have a balloon.

Isaac thought he was going to finish it sooner if he tried, because he just stitched the cloth together, but he was delayed because of that Isaac order.

- so that the front, back, left and right are symmetrical and weigh the same.

I don't mind the center of gravity going up by buoyancy.

But I have trouble leaning on either the left or the right and falling over.

Therefore, orders were placed so that the dimensions and weights would be symmetrical back and forth, left and right.

But the way I ordered it was bad.

Isaac thought, "Mostly together," but the head of the Wangdu branch of the Braak Chamber of Commerce tried to be as symmetrical as he could be.

Even a single large piece of fabric makes a slight difference than it is made by hand.

Those with few errors were selected from a number of materials and calculated closely so that the length and weight would be even on them.

Whatever you say, it is a request from the Duke.

When he couldn't do half the work, he used his connections to gather the well-armed needles that were in Wang Du and even sewed one needle carefully.

I was told to use an unusable product called rice paste, so I also have to try what condition it will be when it dries.

Isaac thought lightly, "If you just sew it, it'll be done soon," but if you ask me, I was doing some heavy and painful work that I couldn't help but notice, as if I was manufacturing a chemical that would explode if I mishandled it.

Even if it was easy for those who ordered, it was not easy for those who ordered the Duke's immediate orders.

Though not aware of such circumstances, Isaac was not dissatisfied that "the time is right and there is no choice".

With the Kingdom of Lead officially welcoming Elves and Dwarves ambassadors, missions were coming from countries with alliances.

Since elves and dwarves reside in various parts of the world, it is to discuss ways to come into contact with the Fae who are in contact with their own country.

The kingdom of Reed was troubled by the lack of salt by the elves bordering the Marquis of Wellrod, but not necessarily the same with the other elves.

So I came here to talk to you about how to ease your first contact.

If great people from other countries are gathered, it is not strange to think about selling them goods on this occasion.

Isaac thought it was because of the slower completion than he thought.

Paul and Kai were also called as promised to show off the finished product.

Claude has long been in contact with modern human society, so he is attending meetings with the mission.

For that reason, he starts out unplugged because he's busy for a while.

To use the fire, the place was turned into a large squad yard.

Not only Margaret and Bridget, but Matt and Tommy come on a break to visit with the knights.

Experiments will be conducted as large numbers of humans and horses for cavalry watch.

"Where the wind was likely to pass, we filled it with rice paste, and we took great care to make sure it was even in size and weight. You could have done what you ordered."

The branch manager of the Braak Chamber of Commerce was nervous.

The job is supposed to be perfect, but because it's the first thing I make, I was left with anxiety.

"Thank you for your hard work. You wonder what I made this stuff for? You should take a look. It might fail."

"Thank you"

- Round cloth made so that the inside is hollow.

I was wondering how to use such a thing.

Thank you for visiting.

"Well, let's hang the fuel pocket"

Firstly, install parts for hanging charcoal.

This part is troublesome when burned, so thin chains were employed, not strings.

"I also used it when stitching the dough together, but I also used something called a hatme where I attach the chain. That's a great thing. If you use it for a tent or something larger in size, it should be easy to see the effect of hole reinforcement. I think I can sell it."

Since there were many unknown parts of the balloon and it was difficult to shake the subject, the branch manager decided to touch on the hatme.

Because the needles I actually used reported that they were "extremely effective at reinforcing holes".

"Maybe I could use it for holes and bags that go through my shoelaces."

"The more I usually use, the more it makes sense... I see, you're right. Especially to knights and soldiers."

He nodded again and again, looking at the knight.

If you want to reinforce the hole, the more you use it on a daily basis, the tougher it feels.

And since the knights have their lives at stake, the more sturdy tools they will be treasured.

I am confident that a new product using beet will be sold.

"Well, let's lift the balloon. Bridget, use the magic of fire in the hole under the balloon."

"Okay."

It was also for this reason that Bridget remained.

I wasn't called to the talks just because I "don't want to call anyone who nearly smashed diplomacy about being touched in the ass".

In charcoal it takes time to warm up, so I'm going to use magic until the balloon swells to some extent.

Making a track record of "not relying on magic at all" is important, but it is still in the experimental phase.

I chose a quick way to try it.

Isaac lifts a shriveled balloon with his friends.

Even elves can't use two magics at the same time.

You can't use fire and wind magic to send hot winds like burners.

To make it easier to send air inside, it was necessary to lift it.

I could have let the knight do it, but this is also to satisfy Isaac's intellectual curiosity.

I wanted to take part in the experiment and feel the sense of accomplishment, so I decided to hold it with my own hands.

"Whoa!"

When Bridget used magic and pumped air into the balloon, the balloon began to swell.

Surprising voices rise from the surroundings to the phenomenon of the cloth swelling for the first time.

But the knights' surprises are relatively small.

Because they know cloaks and tents can get windy and swell.

It wasn't a theory, it was an experience, and I thought there was a phenomenon closer to it, so the surprise was smaller than the others.

"Kind of creepy"

"But it's amazing."

My friends are also tense about the phenomenon happening in front of me.

Isaac releases his hand where it swells somewhat.

It seems that a lot of buoyancy has been secured, and there was no sign that the balloon area would fall to the ground.

"Why don't you all let go of your hands in turn? It could already be starting to float."

"Seriously! Wow."

Paul lets go first.

The part in charge of him didn't fall either.

Look at that, everybody lets go in turn.

- Then, the balloon was independent.

(It didn't float in the sky, but it has buoyancy to the extent of independence. Do you want to fly when it's warmer?

"Mr. Bridget, you can stay put. Let's do the rest with charcoal."

"I'd like to try it to the end...... It's not funny if you just fly by magic."

Bridget gave the expression of regret, but pulled back heavily.

Because she also wanted to see flying in the sky with a force that had nothing to do with magic.

When Bridget leaves, the servant carefully puts charcoal in the fuel pocket.

The balloon body is cloth, so you have to be careful not to burn it.

I don't know what it was like, but some people looked like they were going to throw up because of the nervousness of being involved in a great project.

Isaac looks around after charcoal is put in.

It was going to take a little longer for the balloon to float, so I try to explain the situation to make it hold between.

"Well, you still had your explanation. This is a balloon that floats in the sky.... Even so, I'm planning on it because it hasn't floated yet. But you know the fabric's floating around, right? This is proof that it floats in the sky itself. The force that floats in the sky, if buoyancy increases, it must float in the sky. That might take a little longer. Let's see how it goes."

Even while we're talking like this, the balloons keep swelling.

And when the balloon swelled up into the bread, the balloon began to float.

"Yay! Success!"

- Thanks to Isaac knowing the finished form.

- Thanks to the Braak Chamber of Commerce for their hard work.

- Or both.

Things went better than I expected.

Isaac rejoices, celebrates his success and highs with his friends.

Naturally, Bridget and Margaret also exchanged high touches.

Margaret was shy and reluctant, but was up to Isaac's hopes.

But I've noticed it because she was reluctant.

"Isaac, are you thinking about what those balloons are going to do?

"Where... Ah!?"

Isaac sees at his feet.

There was a rope left unconnected there.

Next I see the balloon.

I've already flown higher than the roof of the mansion.

"Oh no! Mr. Bridget, can't you magically get me down?

"What, how?

You know, shooting things off.

"No, you can't. They say if you use attack magic all over the city, you can't. I wish I had a bow..."

"Matt! What about the bow?

Hearing Bridget's answer, Isaac asks Matt if he has a bow.

"I was in riding training, so no one has it"

The answer I returned was not what I wanted.

Even while doing this, balloons start to move in the wind.

"Ahhh! It would be tough if there was a fire somewhere with charcoal. Give me your horse! You might need magic, so follow me, Mr. Bridget."

"Wow, okay."

Isaac jumps on the horse that was nearby and puts Bridget on the back.

"We're coming with you."

Kai and Paul also rented a nearby horse to ride.

Behind them, Raymond and Lucas ride.

"We might need some manpower, so bring a couple of Matts with us."

"Copy that!"

As Matt straddles his beloved horse, he immediately appoints five knights to accompany him.

Isaac ran his horse and left the mansion.

"Come on, how far are we going?"

Balloons don't go on.

Faster than a horse for not having to worry about a bend or something.

"Could it have come down a bit?

"I guess it's cooled down by the wind and buoyancy is decreasing. All right, stay down."

Glad to have used a small fuel pocket to begin with.

Like Raymond and the others said, I would have flown away until I ran out of charcoal if I had used something big.

Thanks to the prevailing cooling power of the winds above the firepower, the balloons gradually began to lower altitude.

- But that was a bad direction.

"Isaac! That's not a good direction!

Kai screams.

Even if he didn't tell me, Isaac understood.

- The balloon is on its way to the royal palace.

As it was, it was good, the walls, bad, and I was about to hit the castle.

"Fine. As long as you fell into the garden and scorched the trees, you can forgive me if you desperately apologize..."

You'd be pretty pissed off, but that would be enough.

If Elias said, "It was for friendship with Dwarf," he was sure he would forgive me.

It shouldn't be the worst.

"Ah! It fell inside the walls!

In the distance, I could see the balloons that were dropping altitude descending inside the walls.

Isaac hurries to make his horse run towards the castle gate of the royal palace.

Along the way...

(Bridget has breasts there, too. Not as good as Judith)

- And despite this situation, I could afford to worry about the size of Bridget holding me.

When you reach the castle gate, speak to the gate soldiers.

"I am the Duke of Isaac Welrod Enfield. I'd like to speak to the Royal Palace security immediately."

"Lord Enfield! Yes, I did. Immediately..."

"It's an emergency! Hurry up and close the gate!

A Kingsguard knight ran from the royal palace before the gate soldiers responded to Isaac.

"What, um..."

Unable to react to the sudden situation, the Gate Soldier's gaze goes back and forth between Isaac and the Kingsguard Knight many times.

The Kingsguard knight who had run noticed Isaac's appearance.

"Lord Enfield. Sorry, pick it up today"

"... what happened?

I have a bad feeling about it, but Isaac couldn't help but listen back.

The Kingsguard replies with a pressing look.

"It's an assassination attempt on Your Majesty. Someone used something strange to throw a fire into the conference room."

Isaac and the others cease to believe.

Probably because on this occasion they knew something strange about it.

"You're lying..."

"It's a fact. A fire was thrown in through the window during a meeting with the mission. Sometimes it was hot in the summer, and it seemed bad to keep the windows open."

The Kingsguard Knight received Isaac's words to mean, "Was there a fool to contemplate His Majesty's assassination?"

But the real meaning is different.

Because Isaac was a grunt of despair at the diagonal rise to the worst possible situation.

"We're going to lay down a strict precaution. Hey, close the gate quickly."

The Kingsguard commands the Gate Soldier, who remains standing still, in a strong tone.

"You don't have to."

Where the gate soldiers tried to move, Isaac stops them.

"No matter how much Lord Enfield, I cannot obey that order. Your Majesty's safety comes first."

"I know that. Because I know what I'm talking about. If possible, I would ask His Majesty to give me the opportunity to confirm and clarify"

"Lord Enfield!?

At the time Isaac says elucidate (...), the Kingsguard knight puts his hand on the sword and is alert.

There was a good reason for that.

- Even the Duke's privilege does not absolve him of his sins against the royal family.

If Isaac's actions are hostile to the royal family, he deserves the utmost vigilance.

Seeing his vigilance makes Isaac's heart beat so hard that it's about to burst.

(Shit, shit. Why is this the worst thing that's ever happened to you? with balloons…)

I just wanted to see Sieghardt look amazed.

It was intended to rebel against the royal family, but I have never thought about killing it with charcoal.

Yes, even though I threw in the fire, it's only for a few charcoals.

It's perfectly flat, like being executed for attempted assassination of Elias with something like that.

It's more of a pathetic way to die than something called "rebellion and failure".

We have to prove that Elias has no rebellion at all.

"Let's check with Your Majesty. But Baron Kirby's accompaniment is not allowed for His Majesty's safety even if permission is granted. You'll have to wait in the separate room."

"Okay. That makes sense, too."

The Kingsguard knight alerted Matt.

Tommy and I are the kind of guys who get into the enemy formation and take over Marshal Ford.

If Isaac had ordered me to kill Elias, there would be danger to Elias.

Isaac, who understands that he is alert to Matt, admits that Matt will be waiting in a separate room.

That's when I noticed Bridget's body trembling on my back.

(Well, Bridget and Raymond were working with me. They might treat me like an accomplice...)

Isaac is not just about his own safety.

I realize that the safety of those involved in this matter must also be ensured.

(What am I supposed to do...)

If it's just Elias, he might believe there's no rebellion if he licks it even behind his shoes.

Unless you were discussing it with elves and Dwarves ambassadors along with national missions.

Think about your physical condition, and you'll have to take tough action.

It would be counterproductive with a semi-productive excuse.

I was just in a light-hearted mood during the summer vacation, and I was feeling like I was going to throw up under stress for a sudden expansion.