Day in Infinity

"Hello, I am the person who is responsible for saving the world in this era, and the one next to me is the one who will complete your mission of killing Muzan Kibutsuji in this era."

When Ji Kuniyoshi heard the name Muzan Kibutsuji, a flash of light appeared in his eyes. He had always been blaming himself for not being able to kill Muzan, so he really wanted to kill Muzan with his own hands.

"So, you brought me out of Hades because you want me to help you kill Muzan Kibutsuji?"

Jiguo Yuanyi clenched the Nichirin Sword in his hand, his eyes full of determination, but when he saw Li Ke, the sense of danger made him open his eyes wide.

"But you should be able to kill Muzan Kibutsuji, right? Besides, I have heard of your reputation in the underworld."

He couldn't help but ask, because he could feel that Li Ke was very dangerous, and there seemed to be infinite power hidden in his body. When he was in the world of the dead, he thought about what kind of person Li Ke was, who could actually clear the demons in this world.

But when he saw Li Ke in person, he felt relieved, because Li Ke was a man who could make him feel dangerous.

Li Ke didn't know what he thought of him, but told him his purpose.

"Muzan Kibutsuji is a coward, so it's basically impossible to catch him."

Li Ke spoke very seriously.

He felt that it was basically impossible for him to find Muzan Kibutsuji. Judging from this man's situation, he was sure that he would not appear on a large scale again for hundreds of years.

Even if they have not planned to retreat completely now, they will inevitably retreat after learning of his existence.

"He will definitely hide, and it is very difficult to catch such a person if he wants to hide. But if we let everyone learn the breathing method, then it won't be a problem. And you should also know how harmful the existing breathing method is to people. If we can develop a breathing method that can prolong people's life and cure some physical diseases, and make it have a strong, sunny power, then even if Muzan Kibutsuji appears again in the future hundreds of years later, there will be no problem."

Li Ke did not say that he planned to let Jikoku Yuichi discuss the research with him, because such things were bound to happen when studying such a breathing method.

And he also has his own little thoughts.

If the breathing method could be used in other worlds, he wouldn't have to worry so much about the physical conditions of some girls. Even if it couldn't be used in other worlds due to differences in the world, it could still make Shinobu Kocho's body better, so that she wouldn't die just after he exerted force for a while.

"This……"

Tsugikoku Yuichi's eyes lit up, and he immediately realized that what Li Ke said was a great idea!

As long as everyone knows the breathing technique, everyone will be a swordsman of the Demon Slayer Corps, and everyone will be able to fight against Muzan Kibutsuji, instead of being killed directly after encountering the slightest blow like now.

As for whether anyone would learn it, as long as it is related to prolonging life, how could no one learn it!

In this way, even if Muzan Kibutsuji escapes from this country, he still cannot escape his fate of death!

"it is good!"

Tsugikoku Yoshiichi had no intention of refusing and agreed directly.

Li Ke chuckled and waved his hand, and a woman appeared next to Jiguo Yuanyi.

As soon as Ji Guoyuan saw this woman, he hugged her without any hesitation, because this was his wife.

"This is your employee benefit. During the time you and I are discussing this, you can be with your wife, but you must not go out."

"Huh? Why?"

Although Jiguo Yuanyi's heart was on his wife, he couldn't help but have doubts after hearing what Li Ke said.

Because the moment he saw his wife, he planned to take his wife back to where he originally lived.

"Because Muzan Kibutsuji is a coward. If he finds out that you've been resurrected, he'll run away without hesitation."

Ji Guoyuan was stunned for a moment, then spoke helplessly.

"you're right."

He had wanted to meet Muzan Kibutsuji again before, but the fact was, he would never meet him!

This guy had been avoiding him, and it was only at the last moment of his life that he allowed his brother to appear in the form of a ghost.

"I understand."

He sighed, pulled his wife, looked at Li Ke, and the boy who was looking at his earrings curiously.

Only then did he realize that the boy in front of him not only had the same earrings as himself, but also had his own breathing method.

"Are you a descendant of Kamado Tankichi?"

He couldn't help but ask, and the moment he saw Tanjiro, he had a feeling.

'This child will complete what I have not completed'.

This feeling was so strong that he couldn't help but reach out his hand, and Tanjiro also had an inexplicable feeling, as if the man in front of him was another self.

"He should be the one from this era who came to kill Muzan Kibutsuji, so we also need to teach him during the communication process. Don't you find that his temperament is very similar to yours?"

Li Ke spoke, but Jiguo Yuanyi did not answer. Instead, his wife answered.

"Yeah, there is indeed a warm feeling. You are very similar to Yunyi."

Li Ke looked at the woman and said nothing. He just took out a pot of fruit wine and some snacks and placed them in front of the lady.

"Ma'am, please help us find some leaves to use as cups."

The author says:

Author's words: emmm, wait a little longer for the next chapter...

Chapter 211 Ultimate Life

The woman whose reunion with Ji Guoyuan was disturbed did not complain, but went to find Ye Zi happily, and Li Ke also started a discussion with Ji Guoyuan.

Tanjiro looked at the person who said his ancestor's name and was about to say something, but Li Ke on the side grabbed Tanjiro's head and pushed it down.

Now is the time to pay a teacher to learn from you, as for finding bonds or something, let’s talk about it later!

"I really want to know what you were thinking when you developed this move and this breath..."

Li Ke struck a posture and breathed. He didn't quite understand why Ji Guoyuan did this. But after Ji Guoyuan took a look, he immediately answered Li Ke's question.

"Oh, this move is not like this. The breathing method should be like this. Maybe Tanjiji didn't remember it."

The two people began to communicate. Li Ke had a wide range of knowledge, especially after experiencing two genius modes. He had a lot of knowledge directly mastered by him, so when he communicated with Yuichi Tsugumi, he often came up with many things that Yuichi Tsugumi had never thought of. Yuichi Tsugumi was worthy of being the person who had the most research on breathing methods. After understanding the place Li Ke mentioned and the various breathing methods derived from this era, he immediately began to make changes to his own diary breathing method.

While the two were communicating, Tanjiro, who was standing aside, became the test subject. Whenever the two had new ideas or other things they wanted to experiment with, they would let Tanjiro try them.

There is no way around it. Tsugikuni Yoshiichi's vitality is incredibly strong, and so is Li Ke's vitality. The things that the two of them can use have no reference value at all to ordinary people, so only Tanjiro, who is relatively ordinary, can do the experiment.

But the effect was really good. In just a few hours, the two of them adjusted the Sun Breathing Technique into the version most suitable for Tanjiro, and also added some healing methods.

Li Ke also benefited a lot from this.

"Oh I see……"

After using Jiguo Yuanyi's method to interfere with the blood and qi through breathing, Li Ke could feel how Jiguo Yuanyi stabilized the bleeding symptoms. From his opinions, Li Ke also mastered some methods to interfere with the circulation of blood and qi through breathing, so that blood and qi can be transported more safely in the heart!

"Hmm... This feels really good, Tsugikoku Yuichi, you are indeed a genius!"

Li Ke couldn't help but praise him. Although he couldn't be compared with Roger, after all, Roger's teaching had a huge impact on the improvement of his strength, but Tsugaru Yoshiichi's control over tiny power was quite exquisite.

If Li Ke had not tried it and found that Jigoku Yuanyi was unable to use Qi and blood energy, he would have wanted the other party to help him improve the operation of the blood energy secret technique!

There was no other way. He didn't have the ghost hand, so he could only control his violent blood and energy by himself, which was a detour or a shortcut.

Because in the end, the path of the Berserkers is also towards more precise control of their own blood and energy. It's just that because of the ghost hand, they can cheat and use the power they have cultivated in advance...

He was on this path from the beginning.

"Well, there, you are the genius..."

Tsugikoku Yuanyi spoke sincerely. Li Ke's broad knowledge and understanding of various martial arts made him feel like he was facing a library, especially since the other party possessed various powers, and each of them was at the level of perfection. If it weren't for Li Ke's youthful aura, he would even think that Li Ke was an old man in his eighties, because only people in their eighties who have been learning all the time can have such knowledge and ability.

But Li Ke looks like he is only in his twenties, which can no longer be described as a genius.

So he guessed that Li Ke must be a genius who came from a prominent family and was diligent and studious.

Because only people from famous families can learn so much knowledge.

"Hahahaha... I'm not a genius, I just had another adventure."

Li Ke was a little embarrassed. His knowledge reserves were entirely due to the genius mode given by the world when he destroyed the monsters in this world, but he was completely unable to integrate and apply it.

As for normal times, he was just studying. In fact, he didn't really learn much. He could only remember it when others reminded him.

But after two baptisms of genius mode, he "mastered" these.

To be honest, it was the current situation and the terrifying nature of these monsters that made him plan to end it quickly to avoid any further complications. Otherwise, he would definitely have to train and learn for a year or two before finally killing this monster.

That genius mode is really awesome!

"You two should stop praising each other..."

Tsugikoku Yuichi's wife found it very interesting to see the two people praising each other, but she was more concerned about something else.

"Is that what you were talking about before considered completed?"

She didn't want to see her husband worrying about not completing his mission after his death, so she cared more about this.

"A breathing method that has no side effects and can prolong one's life has been completed. However, due to the difficulty of learning it, I'm afraid the effect will be different for each person."

Jiguo Yuanyi sighed. This matter was not too difficult for him. He started to help regulate his mother's body when he was a child. He also thought about this aspect when he first developed the breathing method.

After communicating with Li Ke, the "master" of human qi and blood, and learning some modern medicine, many things that were previously unclear became clear to him, and the breathing method that the two wanted was actually created very quickly.

This breathing method does not require much talent, and anyone who can adjust his or her breathing can do it. However, it is very difficult, and only by persisting for a year or two can it see the effects of improving the body.

So Li Ke suggested that the breathing method could be divided into several types.

A breathing method can improve one's blood and spirit, allowing one to work better, but it cannot harm the body. Once the body reaches a certain limit, the person will become unable to breathe if he or she uses this breathing method.

Another breathing rule is the one that allows people to sleep very soundly, and it is specifically used to restore people's spirit and sleep.

The breathing method that repairs the body and strengthens oneself is taught in conjunction with the other methods to repair and reduce the side effects of the first breathing method.

In addition, there are breathing methods specifically for repairing the kidneys and maintaining the stomach.

The main point is that although the complete breathing method is difficult, it is no problem as long as you learn it by breaking it down.

"It's just that everyone has different situations, so it's difficult to promote it. But all we have to do is to thoroughly promote the breathing method and make it a part of this world. As for the rest, there will naturally be countless talents to correct it themselves. The Demon Slayer Corps will no longer have to kill demons, but will become an organization specializing in the study of various breathing methods."

Li Ke didn't think that killing ghosts should be privately insured at all. The Ubuyashiki clan had gone astray. The most important thing he should do was to join the shogunate, promote the breathing method, and spread the power of the breathing method without restraint.

Only in this way can Muzan Kibutsuji be completely destroyed.

But unfortunately, what the Ubuyashiki clan wants to do most is to kill Muzan Kibutsuji. Doing so will cause Muzan Kibutsuji to flee madly, so they will not adopt this plan.

Li Ke didn't have this concern, and now no one knew where Muzan Kibutsuji was, so he didn't feel any pressure at all.

As for what you gained from communicating with Yuichiro Tsugikoku?

A more complete Sun Breathing Method, a set of breathing techniques that can adjust the unstable state of his Blood Qi Secret Art when he uses it, making his Blood Qi Secret Art more stable or flowing faster, is enough.

As I said, his energy is limited when he fights, and this level is enough.

"That's great... By the way, Yoriichi, you have about a week to move freely. You can go around the Demon Slayer Corps headquarters. If we are lucky enough to meet Muzan Kibutsuji, I will summon you out."

A smile appeared on Li Ke's face.

Tanjiro has now super evolved. The Sun Breathing Technique that he and Yoriichi Tsugakuni have tailored for his physical condition is only 80% of the power of the original version, but the side effects are almost negligible.

Li Ke even planned to let Tanjiro imitate the dress of Yoriichi Tsugakuni and dye his hair red.

In this situation, Li Ke really wanted to know whether Muzan Kibutsuji could bear it.

"Ah."

Ji Guoyuan nodded. He had nothing to object to this.

And at this moment, the sky began to brighten.

only……

"Ok?"

Li Ke and Tsugumi Yuichiro looked at the box where Nezuko was placed in the distance at the same time. They heard a strong breathing sound at the same time, and felt the feeling that a huge life was slowly awakening!

And the breathing of this life is exactly the most perfect frequency of the sun's breathing that they have researched!

However, there are some subtle differences.

Some peculiar differences.

Under the sound of breathing, the sunlight, which should have been dim, suddenly became dazzling. Li Ke could feel that the energy of the sun was being continuously transmitted to the box.

"Could it be..."

Li Ke had a guess instantly, but the next moment, the wooden box shattered instantly, and a tall figure stood up from the broken wooden box, looking at them with his back to the sun, with a strange smile on his face.

Her hair danced in the air like an octopus. People couldn't see her face clearly because she was facing the glaring sun, but they knew she was Nezuko, and they could see -