Baek Yoonjun calmly observed the inside of Tang Yuhwa.

No matter how he looked at it, what had taken root inside Tang Yuhwa was something full of poison in the form of a dantian.

'I think I can feel a faint amount of internal energy.'

As a result of Baek Yoonjun observing Tang Yuhwa's dantian, there was indeed internal energy.

'Compared to the size of the dantian, the efficiency is completely messed up, isn't it?'

However, the efficiency was less than one-tenth.

'Still, there is internal energy.'

Since there was internal energy, it would be possible to operate it as before.

"Then I will lead you, so try to operate your internal energy."

Baek Yoonjun moved his internal energy along Tang Yuhwa's meridians.

"Like this?"

The internal energy in Tang Yuhwa's dantian moved along with the movement of Baek Yoonjun's internal energy.

And so, as he was helping Tang Yuhwa operate her internal energy, Baek Yoonjun frowned.

"Why is the poison moving too?"

"Don't know."

It was common sense that one should not speak while operating internal energy, but Baek Yoonjun didn't know such common sense, and the same was true for Tang Yuhwa, who was learning from such a Baek Yoonjun.

In the first place, Tang Yuhwa's squatting posture was all wrong, but there was no one to point it out.

Sizzle.

"Why is your poison melting my internal energy again?"

"Don't know."

However, a problem more severe than words or posture had occurred.

Tang Yuhwa's poison-mixed internal energy, which was moving along with Baek Yoonjun's internal energy, was gradually melting Baek Yoonjun's internal energy.

Fortunately, the amount of internal energy Baek Yoonjun was operating was small, and the melting speed was slow, so it was not having a negative effect.

However.

'If the internal energy melts, I have to inject it again, move it again, and if it melts, I have to inject it again. What kind of nonsense is this?!'

It was a mentally exhausting task.

On top of that.

"Is this right?"

"It's the opposite. If you do it wrong, your qi and blood will get twisted and flow backward."

"Difficult."

Tang Yuhwa couldn't follow properly.

"Even your senior sister, who had no martial talent, was not this bad."

"I have a senior sister?"

"You did. But she left the mountain."

"Okay."

Baek Yoonjun felt a surge of anger at Tang Yuhwa's indifferent attitude.

"It means you have less martial talent than a brat who has no martial talent, but you don't feel anything?"

"Is there a reason to feel anything?"

"Why?"

"Does a doctor need martial talent?"

"It might be necessary!"

"Not necessary!"

Baek Yoonjun shut his mouth at Tang Yuhwa's words, which seemed like she would never yield.

In the first place, for a homebody introvert to have an argument was something that consumed a tremendous amount of mental energy.

And so, as they proceeded somehow, Tang Yuhwa was able to safely complete one cycle.

It was ten times slower than a normal internal energy cultivation method.

"One cycle is over."

"Okay."

"Was an internal energy cultivation method this difficult?"

"Don't know."

Baek Yoonjun still had plenty of internal energy, but he was mentally exhausted.

'Was Sowol actually talented in martial arts?'

And so, he came to the thought that 'maybe Baek Sowol was talented in martial arts?'

'No. She's even worse than me, who's just third-rate, so it's hard to say she has talent.'

But he quickly shook off that thought.

'Then what on earth is this girl, who's worse than Baek Sowol who has no martial talent? An ordinary person? Less than an ordinary person?'

Although Baek Yoonjun always missed the mark, this time he hit it exactly.

Tang Yuhwa's motor skills were less than that of an ordinary person, and her martial talent was also less than that of an ordinary person.

Baek Yoonjun inferred her condition based on his observation of Tang Yuhwa's body.

'She's not a born dunce. Because the poison has seeped into her bone marrow, her body's reactions are slow, and although her skeleton is quite sturdy, perhaps as a rebound from that, her flexibility is close to zero.'

Baek Yoonjun judged that Tang Yuhwa's sluggish body and small frame were due to the poison.

'Since her skeleton is sturdy, she would be strong against external injuries, but because of that, her chest would also be sturdy and flat.'

He had found other problems as well, but they weren't particularly important.

However, he still couldn't figure out why the poison was melting his internal energy.

'There's no immediate solution, and it doesn't seem like a big risk, so let's think about it later. Later.'

The immediate task was not to worry but to confirm the results.

"Right. How do you feel? Don't you feel your body has become lighter or your senses have become sharper?"

"I'll check."

At Baek Yoonjun's words, Tang Yuhwa got up from her seat, moved her body here and there, and jumped up and down.

Then she looked at Baek Yoonjun with her usual sullen expression.

"I don't feel anything."

"Why?"

"I don't know either."

Baek Yoonjun looked at Tang Yuhwa as if she were an unidentifiable creature.

It felt as if all the common sense about the martial arts he had learned so far was being denied.

Whether that was the case or not, Tang Yuhwa continued to feel and try to move the internal energy in her body to see if there were any changes.

And the result.

"Master."

"What?"

"Poison is coming out of my finger."

From the tip of Tang Yuhwa's finger, a drop of a green liquid that looked dangerous at a glance fell to the floor.

Sizzzzle.

As the dangerous-looking liquid fell to the ground, the grass around it withered, and the ground turned blackish.

"What is this now?!"

Baek Yoonjun was shocked.

Although Baek Yoonjun's emotional changes rarely appeared on the outside, this time he expressed his emotions with his whole body.

"Did you operate it properly as I taught you?"

"This is the result."

"Poison coming out of your finger?"

"Yes."

"Something's strange! Do it again!"

Tang Yuhwa operated it again as Baek Yoonjun had directly observed and taught her.

And.

Sizzzzle.

Again, a drop of an incredibly dangerous-looking liquid fell from Tang Yuhwa's finger to the ground, destroying the ecosystem of that land.

Baek Yoonjun froze.

Contrary to his frozen body, his mind began to spin like crazy.

'Come to think of it, martial arts are like learnable superpowers in modern terms, and internal energy is the energy for manifesting those superpowers, isn't it?'

Baek Yoonjun recalled the principles of martial arts he had established in his own way.

'Martial arts are about moving internal energy along the meridians and operating it in a specific way to exert superhuman strength or cause phenomena that ordinary people cannot.'

Baek Yoonjun recalled how he had made fire or moved water with his internal energy.

'If I can make fire with internal energy, isn't it possible that there is a martial art that uses the poison that exists inside the body, not something that didn't exist?'

Originally, when people see something impossible, they are shocked at first, but later they rationalize it by fitting it into their own logic.

Especially for Baek Yoonjun, the homebody introvert, this tendency was much stronger than that of an ordinary person.

Therefore, Baek Yoonjun had come to a certain degree of understanding of the current incomprehensible situation.

As he finished his self-rationalization, his mind became at ease.

"Right. I can just see it as a martial art that uses poison."

"Then is it a poison art?"

"Right. I can just call it a poison art."

As even the type of martial art was decided, Baek Yoonjun's mind became indescribably at ease.

'I've learned all of the Three Talents Celestial Records and even made my own martial arts, right? On top of that, I've also made a poison art?'

As rationalization was added to rationalization, Baek Yoonjun's mind became as calm as a tranquil lake.

"Master."

And so, a slight ripple was created in Baek Yoonjun's tranquil lake-like mind.

"Is this then a martial art?"

"W-wouldn't it be?"

Tang Yuhwa looked at Baek Yoonjun's eyes with a sullen face.

Although Baek Yoonjun had nothing to feel guilty about, he felt a somewhat guilty heart.

"I said I had no intention of learning martial arts."

"You did, didn't you?"

"But I've learned it."

The lake in Baek Yoonjun's mind rippled like crazy as if a storm had come.

And all sorts of excuses came to Baek Yoonjun's mind.

Although there was no need to be agitated or make excuses, such thoughts did not exist in Baek Yoonjun's homebody introvert nature from the beginning.

'No, what should I say? Ah, this brat usually looks like she has no thoughts, so why is she so picky? Ugh, uh... Ah!'

And so, as Baek Yoonjun was greatly agitated, a plausible excuse came to his mind.

"We don't know all the poisons in the world. In such a situation, isn't it a good thing that we can research an unknown poison and make a medicine for it?"

Baek Yoonjun voiced his excuse and waited for Tang Yuhwa's answer, sweating profusely.

"Hmm."

Hearing Baek Yoonjun's words, Tang Yuhwa fell into thought for about a moment.

"There's a point."

A positive answer came back.

'Fortunately, it seems it was a plausible answer.'

Hearing that answer, Baek Yoonjun was relieved inwardly.

"But Master."

"What?"

"When are you going to teach me acupuncture?"

But that relief did not last long.

In the first place, what he had decided to teach Tang Yuhwa was long-distance acupuncture.

He had strayed far from that original purpose and had created a poison art.

Baek Yoonjun was momentarily agitated, but he soon regained his composure.

"I've also taught you how to operate internal energy, so let's try it right away."

"Okay."

It was something they could just start right away.

In the first place, it wasn't something to be agitated about, but that's how the homebody introvert nature was.

Whatever it was, he worried uselessly and made things complicated.

In any case, having returned to his original purpose, Baek Yoonjun began the long-distance acupuncture class.

"Alright, look. Long-distance acupuncture is an extension of the internal energy operation you just learned."

"Okay."

"Right. This needle, if you just throw it."

Baek Yoonjun took out a fine needle and threw it without imbuing it with internal energy.

Naturally, the fine needle didn't even fly properly and just fell to the floor powerlessly.

"It's not a tool for throwing, so if you just throw it, it won't fly. But if you throw it with internal energy."

Baek Yoonjun took out another fine needle and threw it lightly at a nearby tree.

The fine needle that left Baek Yoonjun's hand flew straight and fast and embedded itself in the tree he had targeted.

"See. You can hit it as you wish. If you become proficient, you can place needles no matter how far away you are."

"Seems so."

It looked more like assassination than placing needles on a patient, but there was no one to point it out.

'No matter how I look at it, it looks like throwing a hidden weapon, but it's fine as long as I don't say it.'

'Its use is a bit ambiguous, but it seems there will be a place to use it.'

Baek Yoonjun didn't say anything, and Tang Yuhwa was sincerely thinking of it as placing needles from a distance.

"Then I'll help you, so let's try it yourself."

"Okay."

Tang Yuhwa held a fine needle and operated her internal energy with Baek Yoonjun's help.

In the process, Baek Yoonjun's internal energy, which was imbued in Tang Yuhwa, was continuously melted by the poison.

'This is cumbersome. This might be a risk to Yuhwa, so I'll have to research it.'

Thinking so, Baek Yoonjun absorbed a little of Tang Yuhwa's poison-mixed internal energy.

If an ordinary martial artist had seen it, it was a sight where they would have shouted 'Sorcery!' and grabbed the back of their neck, but there was no one here to point it out.

'This is melting my internal energy like crazy, isn't it?'

The poison-mixed internal energy that was absorbed into Baek Yoonjun's body began to melt his internal energy without hesitation, as if it were a fish that had met water.

'This is cumbersome. But it's not like there's no way.'

Baek Yoonjun recalled the sensation of when he had made Tang Yuhwa's dantian and made something similar to a dantian next to his own lower dantian and trapped the poison-mixed internal energy inside it.

Again, if a martial artist had seen it, it was a sight where they would have grabbed the back of their neck and shouted 'Sorcery!', but of course, there was no one to point it out.

Woong!

After Baek Yoonjun had just dealt with the poison internal energy, a loud resonance and a brilliant light erupted from the fine needle held in Tang Yuhwa's hand.

"A uselessly large amount of energy has gone in."

"Seems so."

"It can't be helped since it's the first time. Anyway, now try throwing it."

"Okay."

As Baek Yoonjun took his hand off Tang Yuhwa, Tang Yuhwa threw the fine needle held in her hand at a nearby tree.

Thwack!

With a loud sound of breaking air, the fine needle embedded itself in the tree.

And.

Sizzzzle.

The tree began to wither.

It was because Tang Yuhwa's poison had mixed in with the internal energy.

Seeing that sight, Tang Yuhwa opened her mouth with her usual expression.

"I don't think I can use it on a patient."

"Seems so."

Baek Yoonjun answered Tang Yuhwa's words blankly and thought.

'No matter how I look at it, isn't this a talent optimized for an assassin, not a doctor?'

For Baek Yoonjun, who hated assassins because he didn't know where they would aim from, his heart became very complicated.

'It's a bit much to look at, but with this, she can probably protect her own body, right?'

Still, he was satisfied that Tang Yuhwa had gained a means of self-defense to protect her body.

"If you're ever in danger, use it without delay."

"I refuse."

"Why do you refuse?"

"If this hits, they die."

"Self-defense means the opponent's death."

"No matter how I think about it, I don't think that's what it means."

Although Baek Yoonjun had achieved his original purpose, for some reason, he felt as if a uselessly large amount of mental energy had been consumed.

'Ah, I want to go home.'

Even though he was at home, Baek Yoonjun wanted to go home.

(End of Chapter)