Became a Teacher at Monster Academy

60 – 7. Monbungi, the Empress, and Her Sister (9)

“Color… color…”

I brushed aside the hair of Cardia, who was sleeping soundly.

He seemed very tired.

It was worth it.

The feeling of helplessness that comes when speculation runs out is incredible.

You’ll be more tired than if you survive ten days without sleeping.

I know because I experienced it too.

I’ve been through a lot.

…I never thought you would experience that too.

Like Bahart, Cardia was a knight, but she was also a lady and a woman.

They were not the ones fighting, but the ones being protected.

So I thought so.

But.

‘You’re such a stubborn guy, too.’

I put aside the flowing silver hair that resembled my mother’s and mine.

“Yes…”

She let out a faint moan as if she was tickled by my touch, and then let out a soft, quiet breathing sound and looked at her sleeping sister.

“…Brother.”

Raysonia called out to me from behind my back, not knowing what to do.

However, I didn’t look at Raysonia like that.

Looking back, it was because I felt like I would show a face that I couldn’t show to Raysonia.

So, I brushed aside Cardia’s hair as she fell asleep from exhaustion, and spoke without looking back.

“…Could you please leave the room for a moment, Raysonia?”

“…Yes, Brother.”

I had a lot to talk about with Raysonia.

There was no way Raysonia didn’t know about Cardia.

But, that wasn’t something to ask now.

“…Then, please excuse me, Onii-sama.”

Raysonia left my room quietly, closing the door.

Just two.

In my room, it was just me and Cardia.

I looked at my sister’s sleeping right arm.

A silver gauntlet that radiates light and wraps around Cardia’s right arm.

And, at that moment, Cardia’s fighting spirit was amplified dozens of times… It was clearly that of the ‘Magic Armor’.

I… Only after hearing Raysonia coming down the stairs after closing the door did I cautiously extend my hand.

…I knew it was a terrible thing to do this to my big sister, but I had to make sure.

I carefully untied and pulled back Cardia, who was sleeping as if she were fainting.

Let go, let go.

Between the loose clothes.

Black underwear was visible.

I found out that my younger sister, who I thought was still young, wears more adult-like underwear than I thought.

…after all, they were only three years older than each other.

If you were a typical aristocratic, blue-blooded person, you would have gotten married and had children a long time ago.

You are no longer a ‘child’ but an ‘adult’.

However, thanks to those adult-like underwear… I couldn’t see the ‘bottom’.

I struggled.

About 3 seconds.

‘…I used to wash him when he was young.’

Even though Cardia was still a real mite, she was my little sister whom I personally changed her diaper and washed her.

It was something that had to be kept a secret from Cardia forever.

There was even a time when I took a shower with my younger sister’s urine.

in other words.

That’s it.

Although she had changed a lot since then, she was ultimately my ‘little sister.’

And, what I am doing now is, after all, a part of ‘nursing’.

So it was okay.

I carefully reached out and unbuttoned the adult-like underwear that seemed a bit too much for Cardia’s older brother.

Tap, tap.

While I was feeling an indescribable emotion at the fact that the woman’s underwear that I had unbuttoned for the first time in my entire past and present life was my sister’s, what caught my eye was a pure white breast.

A little bit of pink.

Cardia’s clean white skin, without a single wound, came into view.

right.

Without a single wound.

“…Nothing?”

There wasn’t.

The ‘magic core’ that was supposed to be embedded in the chest and the heart was not visible.

There was just… a chest with pure white skin.

There was a little bit of pink mixed in, but that was all there.

Even though she had changed in many ways compared to when she was young, I felt once again that Cardia had truly become an adult, but it wasn’t important.

Rather than that.

What was more important was that there was nothing I thought needed to be polite.

“……”

It was clearly a magic armor.

The ‘armor’ that wrapped Cardia’s right arm. It was shaped like a silver gauntlet.

It amplified Cardia’s fighting spirit, which was on the verge of being depleted in an instant, dozens of times, and allowed it to pull out a ‘blade’ with enough power to ‘pierce’ and kill Kyra, and it was exactly the same as that of the magic armor I created. It was the same.

However, the ‘magic core’ that was supposed to serve as the core of the magic armor was not embedded in Cardia’s heart.

“…is it inside?”

Of course, it was a dangerous thing to drive a ‘magic core’ like a stake into a beating heart.

Therefore, I tried to miniaturize and lighten the ‘magic core’ by continuously improving and improving the magic armor that I had first put into my heart.

Up to now, the size of the ‘magic core’ embedded in my heart was much smaller than the original one, which was larger than my heart and protruded outward.

Even in that situation, the output was even increased.

but.

okay.

I didn’t know that even my magic armor had already become a relic of the older generation.

How to check…

Ugh…

I wrapped the cup in my hand and carefully placed it on Cardia’s chest.

Thump, pound, pound…

I could feel the small sound of my heart beating.

but…

I could also feel the soft feel of Cardia’s chest from the hand that held it.

However, I still couldn’t feel the ‘magic core’ that needed to be captured.

It was just soft.

…However, it was confirmed that the magic core was in Cardia’s body.

Ugh, wow…

As if resonating with my speculation, I felt the ‘vibration’ of the magic core in Cardia’s… right hand.

Only then.

I hurriedly took off the glove on Cardia’s right hand.

Underneath the white gloves, I could see a small ‘magic core’ embedded in the back of my pure white hand.

It’s less than 1/20th the size of the one I put in my heart.

It was a ‘small’ ‘magic core’ that could only be used on golems from all over the world.

“…is it.”

The Magic Armor was originally a ‘state-of-the-art’ weapon that had only recently been developed in the world of Monaka.

It was humanity’s last bastion and its last weapon.

In Monaka, it was a weapon that only existed in the ‘setting’ that humanity was preserved because of the existence of such things, as it was actually a story of the hardships of a teacher who was just an ordinary ‘human’.

However, I advanced it a few years, improved it several years earlier… and brought into this world a weapon that would have been used as the ‘ultimate weapon’ a few years earlier.

The ‘future’ of the result was right in front of my eyes.

Ooh, ooh, ooh.

The evidence was the small magic core that faintly vibrated in response to my speculation.

The magic armor is…

It had developed to the point where it could no longer function as armor, but as ‘equipment’.

Naturally, it was clear that it would be weaker in terms of ‘output’ than the magic armor that was suddenly inserted into the heart.

It was natural that there was such a difference in the size of the ‘magic core’ that plays the role of the core.

But, this was great.

Unlike magic armor, it also meant that the burden on the body was reduced to a significantly lower level.

“…thank god.”

Only then was I able to breathe a sigh of relief.

“…What on earth, I’m so glad about.”

I could also hear my sister’s cold, cold voice… Cardia’s voice.

When I turned my head, which rarely turned, with a squeak, I saw Cardia with a bright red face.

and.

“Tsk…”

Under my gaze, Cardia, who had a hard time covering her breasts… spoke with even her ears turning bright red.

“…And, can you explain why I… am naked like this, Onii-sama?”

ah…

hmm…

That means…

“…….”

“……”

Without saying a word, they stared at each other.

As time passed, I felt the color draining from my face.

The blood seemed to be going to Cardia’s face, and Cardia’s face could be seen turning even redder.

yet.

“transformation…”

Cardia’s voice saying those words cut into me like a dagger.

That wasn’t the end.

“I’m going to die.”

The dagger made of Cardia’s words spun round and round.

I got down on my knees.

“It’s a magician.”

It was the name for a new type of magic armor.

A new type of magic armor whose stability has been greatly increased by reducing the size of the magic core.

Unlike the ‘magic armor’ that covers the entire body, it covers only part of the body… Not only is it a burden, but the biggest drawback of the magic armor was able to be eliminated.

The big drawback is that it has to be driven right into the heart.

Of course, there was still a need to insert the magic core.

On the back of the hand rather than the heart.

What an incredible achievement it is that it is enough to pierce a magic core the size of a fingernail rather than a magic core a little smaller than a fist.

Even this…

In some ways, it was far superior to the Magic Armor.

…My demon core was made by ripping out the entire heart of a fairly high-level demon beast called Drake and processing it, but Cardia’s didn’t even need to reach that level.

In other words, mass production was much easier.

This… was truly amazing.

but.

I couldn’t bring myself to say that thought out loud.

That was because it wasn’t the atmosphere.

“…Um, brother. that…”

In my eyes, I saw Raysonia watching Cardia, where a cold wind was blowing.

…Cardia’s accusation, which started with “I’m a pervert” and “I’m going to die,” went on for 10 minutes and chipped away at my mentality. Whatever the reason, I must have taken off half of my sister’s clothes and underwear while she was unconscious, and even massaged her breasts, and I was like that. I had no choice but to ask for forgiveness in the face of Dia’s criticism.

Oh, of course, I didn’t get caught massaging my breasts.

If it had been, it wouldn’t have ended like this.

anyway.

The result was the pudding that Cardia was stuffing into her mouth while blowing cold air.

This was the guy I quickly made and gave to him.

I glanced at Cardia, who was nervously chowing down on her pudding, and said,

“…There was just a slight misunderstanding, so don’t worry.”

“…is that so.”

Raysonia looked like she wanted to say something, but she soon lowered her head and spoke.

“…I’m sorry for keeping it a secret from you.”

“…no. Anyway, whatever. “I understand why.”

…He was indeed a great inventor, ‘Majang’.

If Cardia had said she would use that, I would have probably stopped her.

So you must have kept it a secret.

“…I was going to tell you later.”

I guess so.

But, more than that… Rather than that, I decided to ask about something actually important.

“…Is that magic place ‘safe’?”

Raysonia’s eyes widened at my question… but then she nodded.

“Yes, Brother. It is being made only by the hands of the ‘Empire’. Also… there are still less than a hundred people, including Cardia, who own the ‘Magazine’.”

is it.

Then it was fortunate.

A weapon that was so easy to mass produce should not have been included in ‘Blue Blood.’

.

And then…

There was a high possibility that that advantage would soon become a disadvantage and eat away at the empire.