Willidis, the Duke of Jarzy is coming to the cafeteria.

There were other seats available in the dining room, but the SS maid in the guide guided him to our seats without saying anything. Because I told you so beforehand.

Early raised his hand.

"Good day, Jarzy"

"Oops. I heard your brother was here for me, so I came over after work."

The northern part of the kingdom of Veriraldo is the lord of the Canigin, where he is busy. My stay is short, but I come here almost every day.

"My father and brother are the only ones who can call me in this country."

"Have you finished your meal?

"No. There's a cook trained here in the castle, but I figured we'd better eat over here."

Right, and I'll have the SS maid lower the dinner I almost cleaned up. When I asked for coffee, Early also ordered a yogurt mousse for dessert.

Fluffy creamy mousse. How can people ask for something like that?

"Jarzy, what we're going to talk about is just going to be a chat, but maybe we'll be talking about work. I think it's bad during the meal."

"I don't mind, brother. In this capacity, we don't have enough time to do this in parallel.... and there's no one here to say anything nagging, as long as we keep our manners to a minimum"

Early is also a bitter laugh at this. It is famous that royal aristocracy's dietary manners are hard. Many people prefer to eat over here, even if they subtract the flavor, because Willidis is tolerant of the manipulation. A prime example of this may be Her Royal Highness Princess Fileille, who resides in Willidis.

"So, what's the story?

"Jarzy, you're making magic armor now, aren't you?

"Hmm? Oh, I'm letting you make armor two or three with reference to my brother's Vigilanti. I need to give him a cool name."

Jarzy to chest inflate expectations.

"How about procuring demon stones?

"It's a magic stone for magic armor. It's pretty tricky. If you want to move that thing satisfactorily for a long time, you need something of high quality. It costs money to raise it."

By the way, Demon Stone also has a rough rank. The Demon Stone mounted by Willidis fighters enters the Great Demon Stone, but hits A + when ranked.

The Magic Armored Vehicle Dezelt currently uses an A-rank equivalent of Demon Stone, but that can also be moved sufficiently in the B-rank.

Vigilanti in the power suit uses A- for Unit 1 and B-rank Demon Stone after Unit 2.

From what I've heard, Mad Hunter's magic armor is A + Demon Stone. Currently, in Wangdu, the prototype mass production type No. 2 is B-rank Demon Stone, and No. 3 armor is adjusted so that it can be moved in C-rank.

"By the way, do you know that there are extra Griffon wind demon stones down in Wang Du right now?

"What!?

Unexpectedly, Jarzy floated his hips. When it comes to Griffon, it roughly corresponds to the C-rank Demon Stone. Although there is a difference in quality from + to -.

"You weren't in the north. You don't know. Why is the wind demon stone falling in price?

"With the effect of a magic tool called air boots. A lot of griffons are being hunted. As a result, there are more people selling wind demon stones than people buying them, and the Merchant Alliance is having trouble handling them."

"Ooh, air boots! I got it from King's Landing too."

"By the way, Jin is the originator."

said Early as he spooned into a fluffy mousse.

"Really!?

Surprising Jarzy. I shrug my shoulders.

"Well, the air boots thing is fine. Back to the story, I have more demon stones of the wind attribute right now. If you can count the high ranking Demon Stones, now is the time."

"When we get back, let's arrange a purchase"

"I like that. Commercial guilds also seemed to think of flowing to other countries if stocks were to increase any further. Now that there is a great empire in the north, I want to avoid them taking the Demon Stone."

"Naturally. You can't give it to them."

Jarzy nodded forcefully. All right, all right, that clears the consultation from Mr. Parzi. That's not all I called the Duke.

"So, Jarzy. You said you wanted fighters before, didn't you?

"Oh, I said"

Power in the eyes of the young Duke.

"But I heard you need an A-ranked demon stone to fly a Willidis fighter. I don't get that stuff, come on."

"Yes, the injectable engine consumes a lot of magic, so if it's a low-ranking demon stone, it quickly depletes magic. There you go. I've been thinking about planes that can fly even with low-ranking demon stones."

"Whoa!"

"Simply put, turn the propeller with magic and use it as a propulsion force."

I write down the plane diagrams on the paper I had prepared. Silhouette reminiscent of a single Reciprocal fighter where I say in my world. There's an engine on the neck, right behind it, a cockpit and a big main wing. There's a tail on the back.

Would it be easy to understand when it comes to the shape of the Japanese Navy's zero wars during World War II or the single-shot aircraft of the time?

"Willidis fighters are a lot different shapes."

If Jarzy commented, Early nodded as well.

"It's like a bird without a head."

"Oh, sure."

"This method consumes a lot less magic than the injection type because the Demon Stone engine almost just turns the propeller. Of course, we need to lighten the fuselage, but that should give us a lot of speed."

Most of all, I can't beat the speed of the Demon Stone Jet.

"If you load a high level Demon Stone engine, it will be commensurately faster, and you will be able to load a good weapon.... Well, if you have it, you might want to jet it"

Should an engine that magically turns propellers around be called a propeller machine because it resembles a reciprocal machine but is not a reciprocal machine? Just as the actual reciprocal machine did not reach the sound speed, in the propeller, it is not possible, even though it is a demonic stone engine.

"To be honest, speed and armament are really inferior when compared to Willidis fighters. But as long as the speed doesn't go out, it's good to go around small. Air warfare isn't all about speed, so if you fight at low altitudes, propeller planes can be more advantageous."

On jets and reciprocal planes, I've heard stories of too much speed difference, followed behind but quickly overtaken.

"Even low-output Demon Stone engine-mounted machines depend on how you use them"

"I see."

Jarzy nodded, but quickly got a difficult look.

"But why are we talking about fighters again?

"I hear the Great Empire has air power"

Enemy aerial fleet taught to me by Mr. Daska. It seems to be loaded with artillery, bombs, and magically powered guns on a flying ship.

"More than the enemy has, the need to care about other countries and hide from them about air power has diminished."

This one needs countermeasures, too. Willidis fighters may not be enough.

"Wouldn't it be funny to be struck unilaterally, like the Union?

To my words, Jarzy agreed and dropped his gaze on the picture on the paper.

"Brother, the fighter plan, can you ask for it?

"I'll put together some protocols"

So far, there's no one else in this country who can compile the aircraft proposal.

"Because the Demon Stone engine to be installed is based on Griffon's Demon Stone, I will tentatively call it the 'Griffon Engine'. I'll let you know when I have a plane proposal."

"Then let's call it the 'Griffon Project' with what it means to be a spy."

Jarzy made his voice play.

It took the Griffon project, Project G, to start in secret.