Oboro made a deal with this world.
He didn't know if it was because his soul was too strong, or because of his identity as a transmigrator, that caused the 'change.'
In any case, he felt it.
The greenhouse was the dimensional barrier, the tree was this world, and its branches and fruits were 'power,' the power system.
Strictly speaking, all worlds are like this. The power system is an inseparable part... From a dimensional perspective, the world of Demon Slayer could have evolved into a stronger dimension, but it failed.
It still had a great deal of potential.
"Perhaps it's also because I possess transcendent power, and I view this world from a 'superior' perspective, so... it appears clearer." Oboro mused.
The sunlight shone on his face, stunning Tanpei, who was standing beside him.
"What you need to do is familiarize yourself with your body... Don't just blindly imitate this breathing and energy circulation method. The human body has numerous circulating meridians; you need to understand how to adapt. Blood is the essence of flesh and the vessel of qi. Wherever blood can flow, it can hide, transform, and manifest."
After speaking, Oboro stared into Tanpei's stunned eyes, "You've remembered my breathing rhythm from just now?"
Oboro's words were very subtle.
Tanpei understood. The other party meant that Sun Breathing had many flaws and was not perfect.
A powerful breathing technique must be matched by physical strength. This was also why Yoriichi Tsugikuni could create Sun Breathing, because his physique was extraordinary.
The human body is a treasure trove... Without a top-tier body, it is absolutely impossible to create a supreme breathing technique.
And the man before him... although he looked incredibly frail, his mastery of breathing... was even more terrifying than Yoriichi Tsugikuni, their benefactor from the Kamado family?
How could this be possible?
Although Kamado Tanpei didn't know the extent of Yoriichi Tsugikuni's strength, the imprint in his soul... the figure that flashed in his mind from time to time, the impact it had on him was real.
"Cough, cough, cough..."
In the next second, Oboro suddenly coughed and covered his mouth with his hand.
"Master."
Tanpei was startled, snapped back to reality, and supported Oboro.
"Although I've altered the circulation route of Sun Breathing to avoid physical damage, the amount of movement required for the limbs is still a bit too much to bear..." Oboro raised his hand, indicating he was fine.
What he meant was that simply performing Sun Breathing would not cause any harm.
Adding movements was just to make it easier for Tanpei to remember, conforming to the tradition passed down by the Kamado family.
"To forcibly pass on this breathing technique, your body is already full of scars and cannot be repaired... However, with my modified energy circulation method, you can live a little longer."
Oboro's gaze turned to Tanjiro, "Starting from the next generation, there will be no more drawbacks of shortened lifespan."
"…"
Tanpei also looked at his son.
Immediately after, the two maids came over and helped Oboro put on his haori again.
Oboro bent down, picked up a wooden stick, and drew a detailed and clear meridian chart on the white snow.
The breathing and circulation techniques Oboro knew originated from ancient Chinese martial arts cultivation on Earth... This internal martial art method was almost 'the Way,' a profound secret.
Although individual combat power on Earth couldn't compare to Demon Slayer, in terms of the brilliance and depth of civilization, Demon Slayer was far inferior.
Because this world was based on a small, insignificant country on Earth, evolved... Compared to his homeland, what civilization could it be said to have?
Even this part of the background... frankly speaking, was just picking at the crumbs left by their ancestors.
Thinking of this, Oboro's hand holding the wooden stick paused unconsciously...
The tree-god's words still echoed in his ears.
He suddenly understood something.
He represented not just an individual, but also the people of Earth.
And his true identity and backing.
And these things, in Hunter x Hunter, the first world he transmigrated to... with that mindset, under the premise of advocating for individual will, it was difficult to perceive and feel.
He couldn't awaken at all.
His ability to reach the pinnacle in Hunter x Hunter relied on his memories of Earth, the system's assistance... and his temperament and character, shaped by the ancient civilization in a specific environment.
Without those national martial arts, without the bloodline in his bones... he would never have succeeded.
On the surface, he seemed to have benefited from being a transmigrator, knowing the plot and characters inside out... but in reality, what truly determined whether he could go far was his mindset, his character... In many life-or-death choices, if he had made just one wrong move, it would all have been over.
Moreover, in the use and variation of Nen abilities, he had actually integrated many of his ancestors' 'achievements.'
Just the breathing technique alone had allowed him to reach another level in controlling and transforming life energy.
Acupuncture and pulse diagnosis allowed him to see the structure of different life forms...
His strength in Hunter x Hunter was precisely the fruit of these invisible 'hidden assists' that were accumulated bit by bit.
Oboro smiled, suddenly enlightened.
In Hunter x Hunter, he was like a 'newbie player' with blindfolded eyes. Now, the blindfold had been removed...
Inheritance... No need to pass down individual will, but to pass down the civilization behind me, to let it bloom as another 'flower' in this world, in this era.
The people around looked at Oboro's face, which suddenly broke into a bright, cheerful smile, and they couldn't help but be infected.
They didn't know what Oboro was happy about... but this overflowing emotion was very real.
After finishing the drawing, Oboro began to patiently teach Tanpei the modified Sun Breathing.
Kamado Tanpei looked at the meridian chart on the ground and listened to Oboro's understanding of breathing techniques...
It also included concepts and vocabulary like 'acupoint stimulation' and 'dan energy,' which were refreshing. He felt as if he had opened a door to a new world.
A vast, boundless ocean of knowledge surged through his brain!
Stimulating his nerves...
He listened with rapt attention, afraid of missing a single word.
If there was anything he didn't understand, he would immediately ask.
Oboro also explained patiently...
Tanjiro and his mother had never seen Tanpei so wholeheartedly devoted to something, nor had they seen him show such piety and respect to a stranger.
It was just like a student facing a master in class...
Outsiders couldn't grasp the profoundness, but in Kamado Tanpei's eyes, Oboro's image was on the same level as Yoriichi Tsugikuni... He didn't know the extent of Yoriichi Tsugikuni's strength, nor how strong Oboro was.
In any case, for him, they were both beings beyond reach.
For the entire morning, the three women and one child did not disturb Oboro and Tanpei.
Because the atmosphere of their conversation was so pure, it was simply one teaching and one learning...
Making it impossible for onlookers to approach.
Only occasionally would Tanpei's wife bring them cups of hot tea.
By the afternoon, their conversation had ended.
Oboro called Tanjiro over. The boy first glanced at his father, and after seeing Tanpei nod, he walked over to Oboro's side.
Oboro smiled and patted Tanjiro's shoulder, pointing to the meridian chart on the snow, which had already begun to melt, and said softly, "Memorize this chart... and never forget it."
"Mm."
Tanjiro nodded vigorously.
At this moment, Tanpei's large hand suddenly rested on Tanjiro's head, his tone changed, and he said sternly, "Kneel."
This was the first time Tanjiro had seen his father with such an expression.
Very serious.
All along, his father had been very warm in his heart.
He obediently knelt before Oboro, and Tanpei did the same.
The father and son performed the ritual of apprenticeship to Oboro.
Because Oboro had not only imparted strength to them but had also saved the Kamado family's lives...
"Hehehe... Aren't you worried that I have ulterior motives?"
Oboro accepted the deep bow from the father and son. Kamado Tanpei was an intelligent man. In this world, no one would offer kindness without reason.
But when the power and status of both parties differed so greatly, this prerequisite became less important...
"Please speak, Master."
Tanpei raised his head, his expression calm.
He didn't really intend to take Oboro as his master, and it was uncertain if Oboro would accept him... He was simply expressing his gratitude.
The fact that he drew the meridian chart on the snow instead of on paper already indicated some things.
"Get up."
Oboro said softly.
"I will purchase a residence in the town at the foot of the mountain and visit occasionally... My time is limited. You have fulfilled my wish by letting me see this breathing technique, so we are even. Let's forgo the master-disciple ceremony; let's just be friends..."
"Your family's wild vegetable soup is delicious..."
He said this to the woman standing at the doorway.
With that, he turned and left.
The two maids quickly followed, one on each side.
Oboro's purpose for this trip was simple and had been achieved.
First, to assess Yoriichi Tsugikuni's power through Sun Breathing.
Second, to find a way to reside permanently on Mount Okumoto Toriyama.
Because the Blue Spider Lily bloomed only during the day and for a very short time... it might not be preserved, let alone brought down or transported from the mountain.
Even if it could be... its medicinal effect would likely be lost.
To avoid accidents, Oboro preferred to believe that only the Kamado family could find this flower.
Furthermore, the harvest this time was greater than expected.
Because Oboro finally knew what he needed to do in this low-level world... and had 'touched' the will of this world.
Tanjiro looked ahead at Oboro's retreating back, which required the support of a maid to walk, and at the black haori swaying in the mountain wind. He glanced at his father and said, "Mr. Oboro smells very good."
"Heh heh..."
Tanpei smiled gently at his son and stroked his hair.
"So... there really are people like this in this world."
"I thought... they wouldn't appear again."
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