The mission of killing the demon race and the conferring of a position along with it.
　That's what my father told me....
　As expected, I wasn't expecting it.
　...we have to get ready for this as soon as possible.
　I have to leave Touahade the day after tomorrow to make it to the investiture ceremony.
　There's only today and tomorrow when I can sit down and study.
　He sipped tea in his room and waited for someone.
　I heard a knock at the door.

'Master Lugue, I'm here.
What's going on with you all of a sudden?
We've been waiting for you both.

Tart and Dia come into the room.
　They're here to talk about this.
　Tart and Diaz are my assistants.
　So, if I'm going to fight the demons, they're going to have to fight with me.
　I have to tell the girls exactly what I'm doing.

"There's something I need to tell you both. I've got a mission from my country. And that's because...

When I told them what happened, they each looked surprised.

'It's as good as it gets. Master Rouge, you've come a long way. What is this special status?'
This country is so crazy. Forcing a demon race on a nobleman.

But the direction of my surprise is completely different.
　Tart is happy that my power has been recognized, while Dia's is indignant.
　If anything, Dia was right.

''Lug, what's the real problem, can you kill a demon race?　Every book says you can only kill the brave.
It's impossible. We fought the demons during the last attack on the school. I could have killed them, but I couldn't. In terms of pure strength itself, you're only a notch or two better than me. I could kill them if I was caught off guard. But where I killed him, he would regenerate. In fact, I killed them about twelve times in that place, changing the way I killed them, but each time they came back to life. Only a brave man can kill a demon race.

At that time, my heart was cold.
　After all, no matter how many times I killed him, he would revive as if nothing had happened.
　There was something to be gained by continuing to stare at the opponent's changes while changing the killing method, but I couldn't execute it.

''Isn't it no good, that means you can't win against the demon race. It's like going to die.''
You're not being yourself.
If things stay the same, that means there's a way to win, right?
'Yeah, as I killed, I kept analyzing the moment the demon race died and then came back to life with my Touahade eyes. And the part where the brave Epona kills him. That's why I was able to form a hypothesis as to why only a brave man could kill the demon race.
It's an amazing thing to say, isn't it? Up until now, every country has been researching ways to kill demons, and in the end, they've relied on brave men.

Countermeasures against the demon race is a headache for all countries.
　They only show up once every two hundred years or so, but when they do, they will continue to be overrun by them.
　The country where the heroes were born is still good, but the rest of the world is nothing short of miserable. You can't kill the demons, and even if you ask the brave-holding country to dispatch a brave man who can kill the demons, they won't lend it to you casually, and even if they did, they'd blow you a huge amount of money in return.
　... ... Thanks to this, in some countries, if a brave person is born, they will lend a brave person to each other free of charge as soon as possible.

It's not that I'm superior, it's just that my magic eye can see the demons dying in both the normal pattern and the heroic pattern. None of the researchers in each country had ever seen anything like that before, so no one could.

Even if you study the demon race, you can't capture it. It's also impossible for a researching person to go out on the battlefield with a brave man and observe him.
　The people who have been studying the demon race up until now should have been able to find an answer if they had eyes to see the magic power and see the demon race die like I did.

''Still, it's amazing!　If we can perfect that method and release it to the world, it will change everything about how we fight the demon race.

The method of killing the demon race is not very good when it is monopolized.
　This country where there are brave people will want to make a deal with brave people as a card, but as a person who is forced to kill the demon race, I would like to see more and more people who can kill the demon race.

''That's why I'll complete it first. And when I complete it, I want you two to wear it, Tart and Dia, too.
'Yes!　If you're willing to teach Master Lugue, I'll definitely learn it.
I'll help you with the development. It's magic. The way it works.
Yeah. Both of you, please.

I can't do this by myself.
　But with Tart and Dia, I have a feeling they can handle it.

In the meantime, I want to give them a gift. I'm sure you'll be able to find it in the end. For Deere, it's a custom one for Deere.
'That gun is still going to be more powerful?　It's still awesome enough.
It's small and cute. You can take this one with you whenever you want.

The revolver pistol is handed to Tart and Deere respectively.
　Compared to Tart's, Dia's is one size smaller.
　In Dia's case, the one adjusted for Tarto's, even if the physical ability is strengthened with magical power, the recoil cannot be suppressed. That's why the power is suppressed and the size of the gun is reduced by that amount.

It's a fist-sized gun, that's why we called it a pistol. The short barrel allows for concealed carry and good maneuverability, but accuracy is reduced. In the case of the Tart, install the optional long barrel depending on the situation, and for the Deere, if you can afford to aim at a long distance, use [gunshot].
I'll practice a lot.
The mechanism for firing continuously is quite complicated. It's impossible to create this in one shot using magic. Yeah, I'll hold onto it.

From now on, there's no guarantee that they won't come after you.
　You should have some protection.

My talk is over. Tart, you go back to your training, and Diaz, you come with me to study demon-killing.
I'm sorry, sir.
Let's start with Lugue's hypothesis and theory.

We're going to make our move.
　In order to establish the killing of demons before the demon tribe appears.

◇

I'll explain about killing demons in my room.

The first thing that makes it impossible to kill demons is that they are not living things, because they only resemble living things in the first place. They have a kind of nucleus inside their bodies, and when their bodies are damaged, they disintegrate the broken bodies, and the thing that should be called the power of existence flows out of the nucleus, replenishes the missing power, and immediately reconstitutes the body.
The question is, in that case, if you crush the nuke, you can kill it with one shot, right?
'If only the nucleus had materialized. The nucleus is a spirit, or rather a bundle of power, that just doesn't have any substance to touch.
Wow, that's a lot of work.

So far, that's what I saw when I kept killing the demon race.
　Touahade's eyes saw through the existence of the nucleus from which the power sprang, and I also grabbed the procedure for reconstituting the body.

''Then how can a brave man be able to kill the demons, the brave man is clad in a special power, and when he fights the demons, that power spreads around him and creates a field. Within that field, the demon race's nucleus materializes and the body can no longer be disassembled or reconstituted.''
Which means that if you get hurt, you can't heal and you can't destroy the nuke.
'Oh, then the rest is easy. We just need to recreate the field created by the brave man. The true nature of the field is a fusion of chi, world-filling mana and a special wavelength of magic power. The mana that filled the world to the brave gathered on its own and flowed into the world in a perfect balance, but in our case, we'll have to recreate it with magic.

There are two types of magic power.
　One is Odo, the magic power inside the body.
　The other is the mana that fills the world.
　There are a total of five colors of mana, some tinted with one of the four basic attributes and some colorless.

'This distribution is important. Only when the five manas are mixed with the magic of a specific wavelength in a certain ratio and blended with the chi can the field be established. For the brave, we can do all of this unconsciously, but if we do it, it's quite tedious.
'It's hard to hear, isn't it? But I think we can make it. Some of the magic was mana-powered, and if we can find a common denominator, we can identify a formula for collecting mana. Do you know what the ratio is?
''Oh, I remember seeing it with these eyes. As long as you have the magic to collect the five colors of mana, you can combine mana and magic with magical wavelength matching and chi.
'Hey, it's easy to say, but if you can't control the wavelength of magic and chi, or even if you complete the magic, if you can't make that part of the magic automatic, no one but the rogue can use it. Normally, you can't do that.
"But the control of magic and chi is chanted and cannot be automated. This is something that can only be trained. This is something that Tart and Dia should be able to do. ...but the others are doubtful.
It's a tough sell. But I'll do it. You're going to create a field of demon killers with this?
Yes. Hypothetical, but I'm sure of it. But you see, it's still faulty magic even if it's completed.

Once completed, it will be able to kill the demon race, but there are actually many problems with it.

''What flaws?''
The magic power required to create the Demon Killer Field is ridiculously high, and I just barely managed to release my magic power to the limit. As long as I'm using this field, I can only do light physical enhancements.

If you doped and removed the brain limiter, you could fight, but even then you'd be greatly weakened.

'I'll say it again. That can only be used against rogues. What kind of thing is just barely possible with a rogue with stupid magic power!''

My total magic power is lightly more than a thousand times that of an ordinary person, and it's still growing.
　If it's only here, it surpasses even the brave.
　The amount of magic I can release at one time is a little more than ten times that of a person, but it's still far from human standards. That's how I would describe it, just barely.
　There's no way an ordinary magician can use it.

"Let's complete it first. I'm going to find a way to reduce the amount of magic it consumes. Even if I'm the only one who can use it, and even if I can't use enough magic power while I'm using it, it's still hope.

You can make it possible to kill demons while creating a field.
　Guns and bombs that use little or no magic power can secure the killing power.
　Or you could release the divine spear 【Gungnir】 beforehand and deploy the field the moment it lands.
　Or, there are many ways to do this, such as me setting up the field and leaving the battle to Tart and Dia.

That's true. We'll have to make it first. It's pretty tough, but Lug and I can do it.
Yeah, I'll do it.
And, hey, I need a favor.

Dia blushes a little and places her index fingers together in front of her chest.

'When you're done, go on a date with me. I haven't been able to do anything loverly at all lately. I know you're busy, but I still miss you.

I can feel my cheeks loosen up.
　She's really cute.

'I promise. When this magic is done, we'll go on a date together.
'Yes!　Absolutely.
Of course. I'll enjoy it.

Dia and I have a date together.
　That's very tempting.
　In order to do so, I will first complete the magic of killing the demon race.
　I'm very motivated to do it.
　I'm going to complete it as soon as possible.