Life is Inherently Lewd by Nature.

When mana manipulation begins, a specific ring shape appears in areas where mana gathered in the body exceeds a certain amount.

This is why it’s called a Circle (ring).

And the reason this Circle is called a measure of mastery is because so much power is drawn that the mana led by the body naturally takes shape.

“But why specifically a ring shape?”

Dale, as always, expressed his doubt at my explanation.

I, too, as usual, posed a question to Dale.

This was to give this child an opportunity to think for himself.

“Dale. Where in the human body do you think the force strong enough for mana to become a ring occurs?”

“The force for a Circle to be created?”

“It’s not just gathering mana, but a phenomenon strong enough to distort light and make noise to the extent of forming a ring shape. That’s not easy to cause by will alone.”

A force that the human body itself emits, not external influences like earth or wind.

There’s only one organ that meets that condition.

“Is it muscles?”

“It’s blood vessels.”

Even if it’s a magic=physics worldview, are you trying to create mana with muscles (physical)?

Of course, as it’s based on the body, it’s not completely unrelated, but what’s important now is a more fundamental core than that.

“As long as a person is alive, blood constantly circulates inside due to the heart that beats incessantly, and if mana flowing dependent on this force is concentrated in one place… Naturally, the mana that receives the force will be affected by it and perform a ‘one-dimensional rotational motion’.”

“Ah, in other words, the Circle is created in the direction that matches the flow of blood?”

“You understood well.”

As expected of an excellent student.

It was good to see him quickly understand even slightly complex explanations.

“I didn’t know this because it wasn’t written in the book.”

But was this story more fascinating to him than what he’s learned so far?

The sight of him looking down at his own body, lost in thought.

He’s probably wondering what kind of phenomenon is happening in his body.

“It’s understandable that you didn’t know. This fact was only recently recognized in academia.”

“What? The principle of Circle creation was discovered recently… Isn’t it almost essential for skilled magicians?”

“Just doing it and having it work out is different from delving into the details. Originally, the one who discovered this principle of Circle creation was a medical practitioner from a medical powerhouse country who participated in the war.”

Medical arts.

It was a discipline that gradually gained attention from the middle of the war in this world.

Naturally, the correlation between blood flow and mana can only be understood by mastering medicine. It’s a natural progression that the principle of Circle creation has only emerged now.

“…Medical practitioner?”

“It’s a term for healers who specialize in medicine, like teacher.”

And in this world, my identity can be said to be close to a doctor.

It started with researching how to kill that damn mother, but well… Now I have a sense of mission to save people, so let’s just go with that.

“By practitioner, do you mean using mana to treat people? Like, if you blow in mana, wounds heal by themselves or something.”

“No, that’s impossible. Coincidentally, mana has a nature of being led by will. If you try to blow mana into a person, it conflicts with that person’s will and can’t be properly manipulated.”

Yes. This is why techniques using mana are difficult to apply to living beings, and why the development of the discipline of understanding the human body has been slow.

Even modern medicine as we commonly know it only started to take shape in the 20th century, so in a world with a lower civilization level than that…

Moreover, in this world where the basis of exploration is limited to beings in which mana dwells, isn’t it inevitable that the speed of medical development would be even slower?

“Above all, there’s also the excellent healing method of divine power, so relatively, people didn’t feel the need to research the human body.”

“Divine power…?”

To help explain to Dale who expressed doubt, I raised my hand and put strength into it.

A light occurring in my hand with a buzzing noise.

This is the moment when my power as a believer is manifested in the form of light.

“Teacher, you could use divine power too?”

“As a believer, I can use it.”

With a smirk, I showed the rosary hanging around my neck with the hand that withdrew the light.

The red cross is the symbol of the ‘Cleas’ religious order I belong to. Although its scale and history are small, it’s a proper state religion recognized as the national religion of a country.

It’s also a religious order based on the idea that medical arts and faith can coexist.

I was a formal believer of that place.

“But even if it’s an omnipotent healing power, it’s not all good. Originally, divine power can only be wielded with genuine faith. That means those without faith have no choice but to depend on believers from the start.”

Yes, even non-religious people who can enjoy the protection of divine power to their heart’s content would probably only be nobles.

The reason why a small country researching medicine came to be called a medical powerhouse was because their existence stood out in places that were difficult for even clergy who worship such purity to set foot in.

In the war that disrupted the continent until just two years ago.

“Then, was that medical art created to replace divine power? Specifically, how does it treat?”

“As I said earlier, it’s impossible to blow mana into a being with will and have it heal by itself, so in the end, you have no choice but to treat technically using your own hands directly. For such doctors, mana is just an auxiliary tool.”

I immediately put strength into the tip of the finger I held out to Dale.

“For example, changing this finger into a medical tool like a scalpel.”

-Zzing!

A rather sharp noise for a vibration sound.

The mana gathered at the fingertip starts to solidify into a clear form beyond a shimmer by causing ultra-vibration.

A pure mana blade left in the place where distortion disappeared.

The power concentrated enough to create reflected light beyond distorting light looked like well-polished glass.

“…It looks dangerous somehow.”

“It is dangerous, it’s a technique created to emulate a scalpel that’s even sharper than a razor blade in terms of sharpness.”

It’s not a lie.

What I’ve created at my fingertip now is the result of implementing through the body an ‘Aura Blade’ commonly used by Sword Masters, which creates mana extremely sharp.

While durability is unknown, in terms of sharpness, it’s a level that surpasses even professional knights’ Aura Blades.

“Besides that, you can also cauterize wounds to stop bleeding by creating flames in your hand, or stimulate the heart by creating electricity in your hand.”

“Wh-What? Cauterize the heart with electricity?”

“You use it when you need to. To make a stopped heart beat again.”

-Crackle. Whoosh!

Mana controlled in response to my will created fire and electricity through my hand.

In reality, it’s reminiscent of medical cautery or a heart defibrillator.

In fact, a medical practitioner can be called a ‘walking trauma treatment room’ that uses mana to make their own body a surgical tool.

To replace equipment that comes with the development of civilization with one’s own body.

Isn’t this truly an analog setting befitting a medieval fantasy?

“Can you make a stopped heart beat again by giving an electric stimulus? How does it work?”

“Hoho, you’re full of curiosity.”

Still, our cute new student seemed to have found a new object of curiosity, his eyes sparkling brightly.

But what can I do? We only have about four days left to be together like this to teach about medical arts.

“Explaining about the human body in detail would be too complicated, so if you’re interested, it’s better to start with something easy first. Here, take this.”

I immediately took out a book from the bookshelf and handed it to Dale.

It was clearly a textbook used in regular subjects.

“…First aid?”

“It’s not very important for grades, but it’s still included in essential education. It wouldn’t be bad to preview it on this occasion.”

First aid is literally the technique of saving emergency patients.

As human lives are at stake, it can’t be emphasized enough.

In fact, in my previous life, wasn’t it emphasized so much that it appeared not only in schools but also in the military, even in public service advertisements and internet promotions?

On the battlefield, there were many people dying without time for divine power or surgery, so it could be said to be the technique I relied on the most since coming to this world.

“Hyat!?”

But what is this first aid?

For people without knowledge in medicine, there are many contents that are a bit… you know.

“Teacher! This person here is… is touching the chest while sucking on the lips!”

“That’s CPR and artificial respiration.”

“Is, is first aid such a lewd thing!?”

“Life is inherently lewd by nature.”

Being born from copulation and living to copulate is what living beings are.

Isn’t it natural that such a lewd existence uses caressing as a means to prolong life?

…That’s a joke, of course.

“Dale. Is it easy for a person to hold their breath for more than 3 minutes underwater?”

“Um… No.”

“That’s right, if you don’t breathe, people eventually die.”

Whatever it looks like, there’s a need to correct wrong perceptions.

I looked at the same page as Dale, who was staring at the book, and continued my explanation.

“This CPR stimulates the chest of a person who can’t breathe on their own for some reason to make the heart beat, and helps the lungs breathe by blowing air through the lips instead.”

“Uh, um… Yes.”

“As even people who can’t handle mana can use it sufficiently, it’s a technique that’s recently being used a lot even among commoners and the working class who aren’t versed in handling mana.”

“I, I understand it’s important.”

Yes, if you speak seriously, he understands?

“Still, it’s clearly a kiss.”

But Dale lowered his voice, still seemingly unconvinced.

With his face reddening and shoulders narrowing, he looked just like a shy girl to anyone watching.

“I heard that kisses are something you do with people you like. So, it’s something you should especially cherish…”

A young girl… no, boy, with a red face, narrowing his body and carefully looking up at me.

I keep forgetting even though I know. Looking at him makes me feel a tickle in a corner of my heart.

“Then shall we try it on this occasion?”

“Wh-What?”

“Well, if you feel reluctant, I thought it wouldn’t be bad to practice on this opportunity.”

But apart from that, it wouldn’t be bad to experience it on this occasion.

Having come to that conclusion, I immediately lay down on the infirmary bed.

“Here. Try it once.”

Raising both arms upwards.

Defenseless enough for my whole body to be exposed.