Upon hearing Kanon's question, Kanae prepared to speak up and dissuade her.
Providing guidance to Aoi Kanzaki and Kanao is one thing, since their strengths are not on the same level at all.
But if I want to continue sparring with the three of them...
She was worried that it would have a negative impact on Teiichi's wound.
However, just as she was about to speak, Teiichi spoke first:
"Sure! Let's continue as before, starting tomorrow afternoon! Aoi and Kanao can practice together then!"
Kanae looked at Teiichi.
Noticing Kanae's gaze, Teiichi turned to her and gave her a reassuring smile.
Nevertheless, Kanae was still somewhat worried, but she did not directly refute or question him.
Instead, he planned to ask when they were alone together.
Breakfast time passed quickly.
Kanae, under the pretext of re-treating the wound on Teiichi's forehead, led the two to the Butterfly Mansion's operating room alone.
Wearing a white lab coat, Kanae carefully cut open the scabbed wound Teiichi Teiichi's chest with a scalpel after Teiichi inhaled Teiichi of the Butterfly Mansion's special anesthetic gas.
"You need to scrape off all the scars on your chest and reapply the medicine. Are you sure you're okay sparring with us?" Kanae asked while treating the wounds.
Teiichi chuckled and said, "It's alright, my strength has improved a lot since then!"
"Don't you improve a lot every time you come back?" Kanae replied.
Teiichi gently shook his head, the movement causing his figure lying on the bed to sway slightly.
Seeing this, Kanae gently patted Teiichi's chest.
"Don't move!"
Warninged by Kanae, Teiichi kept his body still and replied:
"This time is different from before; the progress this time is much greater than before!"
"Have you learned something new?" Kanae, intently watching the path the sharp blade had traced.
"Hmm, do you know about the Transparent World?"
" Transparent World?"
The unfamiliar term finally made Kanae lift her gaze from her wound, look directly into Teiichi's eyes, mutter something under her breath, and then lower her head to continue treating the wound.
"Yes, it's a state of mind, or even a realm of understanding, that an individual has regarding the world and the human body."
Teiichi lay on the operating table, his eyes unfocused, his mind sorting out his understanding and feelings about the Transparent World.
"In this state, you can see through the complex appearances and perceive the true nature of things."
This manifests as the ability, during a fight, to clearly see every bone, every muscle, and every trace of blood flow in your opponent.
"You can see a person's bones, muscles, and blood?" Kanae paused what she was doing and looked at Teiichi in disbelief.
This sounds a bit outrageous no matter how you look at it.
If it were an era before the introduction of foreign ideas, she would have been more likely to accept it.
After all, in the past, demons and monsters existed in our ideology and culture; it's just that ordinary people couldn't see them.
But in this day and age, foreign ideas and cultures are constantly being integrated into local culture.
Aside from Teiichi, who traveled from the modern era, the people who received and learned the most from foreign cultures were Kanae and Kagaya Ubuyashiki.
Kagaya Ubuyashiki learns a lot of information while managing his family business and the Demon Slayer Corps and gathering intelligence.
Kanae studied medicine, and many of the current treatment methods are based on foreign medical theories.
That's why she's becoming more and more of a believer in science.
And you're telling someone who believes in science that the human eye can see through every bone, every muscle, and every drop of blood in another person?
"Yes! Hard to believe, right? But it's true!" Teiichi chuckled.
Kanae shifted her feet slightly, and her head was now directly above Teiichi's head, only a few centimeters apart.
The Wisteria- like pupils stared intently at those jet-black eyes.
After a while, Kanae said, "Is your eye mutated? Otherwise, how could you see other people's bones and muscles?"
Upon hearing Kanae's words, Teiichi couldn't help but chuckle softly.
"Perhaps! But with the current level of science, it would be very difficult to figure out the cause of this situation."
Just like the creation of ghosts and Blood Demon Art, aren't they also difficult to understand scientifically?
"That's true!" Kanae nodded, moved her head back, and continued treating the wound.
"So, this Transparent World you're talking about really boosts combat power?"
"Yes! After comprehending the Transparent World, one can almost say that they have perfect control over their body!" Teiichi replied. "You're skilled in medicine, so you must know what this means, right?"
Kanae nodded. "This means you can better engage your muscle groups to gain greater strength and speed! At the same time, you can also identify and eliminate unnecessary parts of your movements, ensuring your actions are concise and efficient!"
As she spoke, Kanae raised the sharp scalpel in her hand and waved it in the air, but there wasn't a single drop of blood on the blade.
"So, is this also the ability to Transparent World?"
Teiichi replied, "Yes! As long as we control the blood flow around the wound, it'll be fine!"
"You can even do that with such a large wound?" Kanae exclaimed in amazement.
"Okay, sure!" Teiichi replied, then continued:
"This is only for internal use. Externally, Transparent World can enhance your perception, and because you can see the direction of the opponent's bones, muscles, and blood movement, you can directly judge the opponent's attack tendency, thereby greatly improving your personal combat power!"
Kanae exclaimed, "Looking at it this way, the ability to Transparent World is truly amazing! And for us doctors, this ability is also very important when performing surgery!"
"Is there any way to cultivate Transparent World?" Kanae asked.
She also realized the importance of this ability from Teiichi's words.
Just like the Total Concentration Constant.
If this ability could be popularized among the Demon Slayer Corps, even if only the Pillars learned it, it would greatly enhance the Demon Slayer Corps ' combat strength.
Teiichi closed his eyes, carefully sensing his own state, before slowly speaking:
" Transparent World isn't a skill, but rather a state of mind or ability. Once your skills and state of mind Transparent World a certain level, and you understand what it entails, you can try to reach Transparent World state by opening and closing your senses."
"Alright, I understand. I'll write down the news about Upper Rank and the Transparent World and send it to you Master. As for the subsequent arrangements, that's up to you, my Master!"
Kanae nodded in agreement, then put down the scalpel, picked up a bandage covered in ointment, and held it towards Teiichi.
"Sit up!"