Starting from Naruto, fusion anime girls

Only Shinobu Kocho knew the relationship of the original plot and had anticipated all of this. So she thought:

"If I'm not mistaken, this doctor's goal from the beginning was to turn Muzan Kibutsuji into a demon. Muzan Kibutsuji was most likely just his test subject, or a tool to divert attention. This doctor is also most likely a demon, and he should have lived longer than Muzan Kibutsuji, or even much longer."

"If all the above inferences are true, then this doctor shouldn't have only attacked the Demon Warrior Muzan in history. There should be other special people who have some relationship with this doctor."

Shinobu Kocho's inference was full of subjective assumptions and could only be considered as a possible scenario. What everyone did not expect was that Ubuyashiki Yoya said at this time:

"Miss Shinobu, what you said makes sense. I had a similar idea after reading the relevant records. So I investigated many events related to ghosts in history, focusing on whether there was a mysterious doctor behind these events. It was under my deliberate investigation that I finally found a clue."

Hearing this, everyone present was fully focused, and then they heard Ubuyashiki Yoya say:

"Hundreds of years ago during the Warring States Period, there was a samurai named Tsugikoku. In order to gain the power to pacify the troubled times, he sought out a mysterious doctor. It is said that this doctor had a special potion that could allow mothers who took it to give birth to powerful offspring that were invincible."

After hearing that the samurai's surname was "Tsugikoku", everyone present was shocked. Because everyone now knew who the descendant of this samurai was, that was the source of all breathing techniques, the most powerful swordsman in history, Tsugikoku Yoriichi!

No one would have thought that the most powerful swordsman of the Demon Slayer Corps, Tsukuni Yoriichi, and the most powerful Muzan Kibutsuji, had very similar birth methods. Whether it was before Tsukuni Yoriichi was born or before Muzan Kibutsuji became a demon, they had both encountered a mysterious doctor!

This is such a coincidence, as if someone had specially arranged it.

"Someone in the Demon Slayer Corps once said that the appearance of Tsugakuni Yoriichi was like the salvation of God. It greatly enhanced the strength of the Demon Slayer Corps and gave humans the power to fight against evil spirits." Ubuyashiki Yoshiya sighed:

"But now it seems that perhaps the real cause of all this was not the gods at all, but the arrangements of someone with ulterior motives. Apparently someone felt that Muzan Kibutsuji was too powerful and might be beyond his control. So he specially arranged for the appearance of Yoriichi Tsugakuni to strengthen the strength of the Demon Slayer Corps and to balance Muzan Kibutsuji, who was constantly becoming stronger by eating humans."

And this person who has been controlling everything in secret, who created demons and the strongest swordsman of the Demon Slayer Corps, is most likely the mysterious doctor hidden in history.

Who is he? ?

Chapter 129 Xu Fu

Doubts lingered in everyone's mind, but the Demon Slayer Corps had too little information at the moment. So even if they racked their brains, they couldn't guess the truth. So after discussing a few daily management issues of the Demon Slayer Corps, this meeting ended helplessly.

But before the end, Ubuyashiki Yoya kept Kocho Shinobu alone. The reason was that the research and development of the ultraviolet lamp had encountered a bottleneck and needed her to come over for guidance. Kocho Shinobu was full of doubts:

I'm a life scientist, why do you want me to guide people who are studying engineering?

However, out of respect for Ubuyashiki Yoshiya, Shinobu Kocho chose to stay.

But after staying, Ubuyashiki Yoya said:

"Ms. Shinobu, do you know where I got all the information I just mentioned, whether it's the history of Muzan Kibutsuji a thousand years ago or the things that happened to Yoriichi Tsugumi hundreds of years ago?"

"Didn't you see it in the family records?"

As soon as she said this, Shinobu Kocho realized that something was wrong.

Logically speaking, the records related to Muzan Kibutsuji and Yoriichi Tsugakuni are extremely important information. No matter how careless Ubuyashiki Yoshiya is, it is impossible for him to miss so much important information. Therefore, the news that Ubuyashiki Yoshiya recently learned should have nothing to do with the family records. But if so, where did he know all this?

Seeing the puzzled expression on Shinobu Kocho's face, Ubuyashiki Kazuya chuckled and said:

"In fact, all this information was told to me by an old friend who has a deep connection with our Demon Slayer Corps. She used to be a subordinate of Muzan Kibutsuji and was a good friend of Senior Yoriichi Tsugukuni. That's why she knows so much important information that ordinary people can't get."

After hearing Ubuyashiki Yoya's description, Shinobu Kocho immediately knew the truth of the matter.

It turns out that the person who told Ubuyashiki Yoya all this was none other than Miss Tamayo, the MVP who killed Muzan Kibutsuji in the original work!

Ms. Tamayo is the strongest doctor in the original Demon Slayer world, and also the first demon to transcend the control of Muzan Kibutsuji.

She was once a demon who was deceived by Muzan Kibutsuji because she was terminally ill and ate her husband and children because of her demon instinct. But unlike other demons who indulge in the desire to eat people, Miss Tamayo constantly resisted her demon instinct after becoming a demon and tried to get rid of Muzan Kibutsuji's control.

After Muzan Kibutsuji was severely injured by Yoriichi Tsugokuni, Miss Tamayo took advantage of the opportunity when Muzan Kibutsuji's control over her was greatly reduced and successfully gained freedom. In the following hundreds of years, Miss Tamayo has been hiding from Muzan Kibutsuji's pursuit and studying ways to deal with demons.

At the end of the original work, Miss Tamayo not only developed a way to turn demons back into humans, but also used the poison she prepared to severely injure Muzan Kibutsuji, greatly weakening his strength, and also sealed Muzan Kibutsuji's ability to split and escape. She was the real MVP in the final battle.

In short, this is a very remarkable character in the original work of Demon Slayer. Even though she is a demon, Shinobu Kocho admires her very much. However, Ubuyashiki Yoya didn't know that Shinobu Kocho knew the plot of the original work, so he introduced Shinobu Kocho to the deeds of Miss Tamayo and asked her:

"Although Miss Tamayo is a kind person, she is also a demon who has eaten humans. The reason why I concealed her identity in the previous meeting was because I was worried that the swordsmen in the Demon Slayer Corps would choose to attack her because of her demon identity. So Miss Shinobu, I hope you will not feel bad about Miss Tamayo's identity, and do not tell anyone about Miss Tamayo. This is also for Miss Tamayo's safety."

In response, Shinobu Kocho naturally nodded in agreement. Then she said:

"My lord, you told me about Miss Tamayo. Do you want me to study with her?"

"good."

Ubuyashiki Yoya nodded and said:

"Ms. Shinobu, you are indeed extremely talented in research. You have produced so many amazing results in just one year. Ms. Tamayo is also a top medical scientist who has lived for hundreds of years and has accumulated a wealth of knowledge in related fields. If the two of you can work together, I think it won't be long before you can produce even more amazing results."

"So in my letter to Miss Tamayo, I specifically mentioned Miss Shinobu's matter, and by the way, I also told Miss Tamayo about your research results. Miss Tamayo thought very highly of your research results, Miss Shinobu, so she agreed to my request and cooperated with Miss Shinobu to conduct more in-depth research on ghosts."

Hearing that Ubuyashiki Yoya had arranged everything, Shinobu Kocho naturally had no reason to refuse. After sorting out the relevant research materials, Shinobu Kocho rushed to where Miss Tamayo was with Ubuyashiki Yoya's letter of introduction.

In less than a day, Shinobu Kocho arrived at Asakusa, where Miss Tamayo was, and found Miss Tamayo's residence according to the instructions in the letter. She saw that the residence was surrounded by the blood demon art barrier, and it was impossible to see any clues from the outside. When Shinobu Kocho approached and said the agreed code, a person walked out of the originally closed wall.

However, this person was not Miss Tamayo, but a young man with green hair, Miss Tamayo's attendant Yushiro.

Yushiro is also a ghost. He was transformed into a ghost by Miss Tamayo because he was suffering from a terminal illness and saved his life. It is also for this reason that Yushiro is very obsessed with Miss Tamayo and resists anyone who approaches Miss Tamayo. So when Shinobu Kocho appeared at his door, even though Shinobu Kocho and Miss Tamayo are both women, Yushiro looked at Shinobu Kocho with extremely hostile eyes, obviously treating Shinobu Kocho as a love rival.

However, despite the hostility, Yushiro still followed Miss Tamayo's instructions and brought Kocho Shinobu into their residence. After entering the barrier, Kocho Shinobu saw a dignified and virtuous woman standing there.

She had long black hair tied into a bun, bright eyes like the starry sky, an expression on her face that was calm yet elegant, and her graceful figure was faintly visible under her kimono. She was definitely a peerless young woman who could make Cao Zei extremely excited.

But Kocho Shinobu is not a thief. Even after the fusion of her soul with Uchiha Izumi, her personality has a bit of male consciousness, but the influence of this consciousness on Kocho Shinobu has long been negligible. So when facing Miss Tamayo, who is of the same sex, Kocho Shinobu, who is as beautiful as her, looks at her with a little appreciation, and then bows and says:

"Hello, Ms. Tamayo."

Miss Tamayo also bowed and invited Shinobu Kocho to come into the room. After they sat down in the living room and Yushiro brought tea, Miss Tamayo and Shinobu Kocho began to discuss research. But what Shinobu Kocho didn't expect was that after just a few moments of communication, they felt the gap between them due to their different knowledge systems.

There are two main sources of knowledge in Kocho Shinobu's brain. One is the knowledge that Kocho Shinobu herself possesses, and the other is naturally the knowledge of Uchiha Izumi. Although these two pieces of knowledge come from different worlds, they are both modern medical systems, so Kocho Shinobu can easily integrate them.

As a ghost who has lived for hundreds of years, Miss Tamayo's most basic knowledge system is definitely not modern medicine. In Shinobu Kocho's opinion, Miss Tamayo is more like a traditional Chinese medicine doctor, who talks about yin and yang and the five elements all the time, which makes Shinobu Kocho confused.

After the two of them had such a conversation, they were talking about something completely different. However, Miss Tamayo was a ghost who had lived for hundreds of years, so she had some knowledge of modern medicine. After realizing that Shinobu Kocho did not understand Chinese medicine, she immediately adjusted her way of speaking, which made Shinobu Kocho understand the point she wanted to express.

But even so, Ms. Tamayo's understanding of modern medicine is not deep enough.

On the one hand, as a demon, she cannot receive modern education openly, and on the other hand, it is also due to the limitations of the era in which the Demon Slayer world is located. After all, it is only the 1920s, and many concepts that are common in modern medicine have not been discovered in this era. Even if Miss Tamayo's level is already top-notch in this world, it is still far behind Shinobu Kocho.

So after the two of them exchanged ideas, their biggest feeling was that before conducting research, they needed to learn different medical knowledge from each other. Only after they had mastered each other's knowledge could they discuss collaborative research.

But before learning from each other, Shinobu Kocho asked another question:

"Ms. Tamayo, from what you just said, it seems that you are studying traditional Chinese medicine! And there are many Chinese idioms in your speech. Was your mentor in learning medicine a Chinese?"

In response, Miss Tamayo was slightly surprised and said:

"Ms. Shinobu, I never thought that you are so young, but you not only have such a wealth of medical knowledge, but you also have some understanding of the language and culture of Shenzhou! It's really amazing."

Then Miss Tamayo said:

"Yes, my parents died when I was young. A doctor from Langya Mountain in Shenzhou kindly took me in and taught me traditional Shenzhou medical knowledge. It was also under the influence of my teacher that I embarked on the path of becoming a doctor."

"I see. I haven't asked for the name of that senior yet?" Shinobu Kocho asked again.

"My teacher's surname is Xu, his given name is Shi, and his courtesy name is Junfang. He is a knowledgeable and skilled doctor. He has learned a vast amount of knowledge throughout his life. To be honest, even if I have accumulated hundreds of years of knowledge now, I may not have reached his level of medical attainment." Miss Tsumase said with respect.

But unlike Miss Tamayo's admiration, when Shinobu Kocho heard the name Xu Shi, her head felt like it was struck by lightning.

Xu Shi, Xu Junfang?

Kocho Shinobu was secretly surprised and said:

Isn’t that Xu Fu’s original name?

Chapter 130 The Devil in the Shadows

After that, Xu Fu and others from Qi wrote to the emperor, saying that there were three sacred mountains in the sea, named Penglai, Fangzhang, and Yingzhou, where immortals lived. They requested that they fast and go with boys and girls to seek the immortals. So Xu Fu was sent with thousands of boys and girls to go into the sea to seek the immortals.

——Records of the Grand Historian: The Basic Annals of Qin Shi Huang

Although Xu Fu is a well-known figure in history, few people know that this Qin Dynasty alchemist actually has two names in the "Records of the Grand Historian". One is the famous "Xu Fu", which is mainly recorded in the "Biography of Huainan Hengshan". The other name is "Xu Shi", which comes from the "Chronicles of Qin Shihuang".

The reason why Shinobu Kocho knew this relatively obscure historical knowledge was mainly because of the memory of the time traveler Zhao Angui. Before traveling through time, this time traveler had argued with someone online about the ancestor of Xiao Ri. For this reason, he looked through many historical records related to Xu Fu and learned that Xu Fu was also called "Xu Shi" in the historical records.

So when she heard that Miss Tamayo's teacher was also called Xu Shi, and had the same courtesy name as the legendary Xu Fu, Shinobu Kocho immediately became a little wary. When she thought about the fact that Muzan Kibutsuji had so many demons under his command, and only Miss Tamayo could escape his control, Shinobu Kocho became more and more suspicious of Miss Tamayo's identity as her teacher.

Could it be that Miss Tamayo’s teacher is really the legendary Xu Fu?

Is it possible that the most important reason why Miss Tamayo was able to escape from Muzan Kibutsuji's control was because her teacher secretly intervened?

Although she thought so in her heart, Shinobu Kocho remained restrained and did not show any doubt about the identity of Miss Tamayo's teacher. After all, it was not polite to say that the other person's elder was a ghost just because of the overlap of a name.

Besides, Xu Fu was a man who lived two thousand years ago. Even if he was a ghost, it was a miracle that he could survive until now. Not to mention that Miss Tamayo was raised by her teacher since she was a child. If that Xu Shi was really a ghost, it would be impossible for Miss Tamayo not to notice the various abnormalities in his daily activities.

Of course, it is also possible that Xu Fu has superb skills and has become an ultimate creature that is not afraid of the sun. As a result, after living for more than ten years, Miss Tamayo has not discovered the identity of her teacher as a ghost. But if this is really the case, everything is even more terrifying.

However, if we follow this possible line of reasoning, all the doubts the Demon Slayer Corps is facing now will be explained.

Once upon a time, Xu Fu, under the order of the First Emperor, brought 3,000 boys and girls to Xiaorizi, just to search for the legendary elixir of life. But after arriving at Xiaorizi, Xu Fu became a ghost through some means, gained nearly eternal life, and threw the First Emperor's will behind his mind.

After that, Xu Fu hid in the curtain of history as a ghost. While secretly influencing the history of this country, he also conducted various cruel experiments. Muzan Kibutsuji was his experimental subject, and so was Yoriichi Tsugikuni. Whether it was the strongest ghost or the Demon Slayer Corps that fought against the ghosts, they were just pawns on his road to immortality.

Even though all of the above are just speculations, Shinobu Kocho also feels how deep the waters of the Demon Slayer world are. The original comic only shows a tiny part of it. There are too many terrifying secrets in the shadows of this world. However, Shinobu Kocho does not have the energy to explore these secrets at this time. The most important thing for her at this time is the study of demons.

So after meeting Miss Tamayo, the two quickly began to exchange and learn about each other's medical knowledge. Miss Tamayo is a ghost, and Kocho Shinobu also has the support of Uchiha Izumi's soul network. Both of them are inhuman beings in terms of learning ability, so they learn and master each other's knowledge very quickly.

Especially since Kocho Shinobu is very talented, much stronger than Uchiha Izumi. Therefore, in the process of communication and learning, Kocho Shinobu not only quickly learned and digested the complicated and profound traditional medicine, but also constantly innovated. Kocho Shinobu's outstanding performance made Miss Tamayo, who has lived for hundreds of years, amazed and looked forward to future cooperation.

Time passed slowly in this exchange and learning. During this time, Ubuyashiki Yoya also continued to purchase various advanced research equipment to help Shinobu Kocho and Ms. Tamayo with their research. With the continuous integration of modern medicine and traditional medicine, Shinobu Kocho increasingly felt the barrier between humans and demons. For this barrier, Shinobu Kocho also gave it a vivid name:

Gene lock!

Through joint research with Miss Tamayo, Shinobu Kocho discovered that the humans in the Demon Slayer world were actually evolved from demons. Although humans are not as powerful as demons individually, their potential as a whole is incomparable to that of demons. Because humans can not only move under the sun, but also communicate and cooperate with each other, and have extremely high organization and discipline. Therefore, humans can develop a brilliant civilization through long-term cooperation, while demons can only hide in the dark and make moves.

Ghosts evolved from shadows at night to humans, which is definitely the result of natural selection. It was the ghosts of ancient times who, faced with the future of the species, took the initiative to seal some of their abilities, thereby gaining greater potential and the possibility of nurturing civilization. This self-sealing chosen for the future of the species is the gene lock.

However, due to the limitations of the times, Kocho Shinobu did not have the conditions to explore the internal structure of cells to figure out the specific manifestations of gene locks in human cells. But combined with the ultraviolet light experiment that Kocho Shinobu had done before, Kocho Shinobu guessed that the establishment of gene locks should be related to sunlight.

As for how to break the gene lock, there are many ways to do this. For example, in the Demon Slayer world, after human cells become cancerous, the properties they exhibit are very similar to those of demon cells. It can be seen that any factor that can cause cell cancer can break the gene lock. In addition to cancer, the gene lock can also be broken through the stimulation of specific drugs, such as Muzan Kibutsuji.

After studying her own cells, Shinobu Kocho discovered that the activity of some of her cells was very similar to that of demon cells. After repeated comparisons of these cells, Shinobu Kocho finally confirmed that the breathing method of the Demon Slayer Corps could actually break the genetic lock to a certain extent.

This discovery immediately made Shinobu Kocho understand why the swordsmen of the Demon Slayer Corps could gain power far beyond that of ordinary people through practice. That was because the breathing method had broken the genetic lock in their bodies to a certain extent, allowing their bodies to achieve demonization during the practice!

In other words, the power of demons and the Demon Slayer Corps is essentially the same thing. The breathing technique of demon killers and the blood demon technique of demons are actually no different in nature. They are both the power after the gene lock is broken.

As for why the swordsmen of the Demon Slayer Corps have a lower degree of breaking the gene lock, and their power is comparable to that of the demons, Shinobu Kocho speculates that it is probably because the gene lock restricts humans from becoming stronger while also restricting them from becoming weaker.

For example, after a swordsman of the Demon Slayer Corps becomes stronger through training, his strength will remain at the same level for a long time without much fluctuation. Just like the swordsmen of the Demon Slayer Corps in the original work, their strength will only continue to grow with training. Even if there is an upper limit to this kind of strength, their strength will not decline rapidly.

The demons in the original work, even the hard-working upper-rank demons Kokushibo and Akaza, after more than a hundred years of training, were not much stronger than the swordsmen of the Demon Slayer Corps who had only trained for a few years. It can be seen that training has little effect on improving the demons' strength.

This is because the existence of the gene lock locks the recovery ability of human cells, so that their bodies will not quickly fall back to their previous weak state after becoming stronger. However, because ghosts have lost their gene locks, their cells have too strong recovery ability, which makes the practice itself meaningless. Because once the practice becomes stronger, the recovery ability of the cells will quickly pull the strength back to the original state.

All in all, the discovery of the genetic lock not only made Shinobu Kocho more aware of the boundary between humans and demons, but also made her understand the essence of the breathing method in this world.

The so-called breathing method is essentially to promote rapid circulation in the body through breathing and extreme exercise, allowing some cells to become cancerous, that is, become demons, during this rapid circulation, thereby breaking a certain degree of genetic lock and enhancing the strength of the Demon Slayer Corps' swordsmen.

Now that she understood the specific principles, Shinobu Kocho naturally began to try to modify the breathing method according to her physical condition, thereby improving her strength. In such continuous attempts and adjustments, Shinobu Kocho perfected the breathing method, and her own strength also improved greatly. At this time, even the strongest rock pillar of the Demon Slayer Corps, Gyoumei Sadomasaka, may not be as good as Shinobu Kocho now. Not to mention that Shinobu Kocho can also use Uchiha Izumi's chakra, and at this time she can already compete head-on with the strong upper-rank demons.

Seeing that her breathing method was so powerful, Shinobu Kocho naturally handed over the improved breathing method to the Demon Slayer Corps. As a result, the strength of the swordsmen of the Demon Slayer Corps has been greatly improved. In addition, the development of ultraviolet searchlights has also been successful at this time. The extremely dangerous battles of the Demon Slayer Corps have become much simpler and safer.

With stronger breathing techniques and more advanced equipment, even the low-level swordsmen in the Demon Slayer Corps can create miracles that were once unimaginable. For example, a guy named Murata easily killed a lower-rank demon from the Twelve Demon Moons with an ultraviolet lamp. If the Demon Slayer Corps' promotion mechanism had not been modified before, Murata might have become a pillar of the Demon Slayer Corps!

The sudden increase in the strength of the Demon Slayer Corps in a short period of time naturally attracted the attention of those who were interested. As a result, some people with bad intentions began to stir in some shadows of the Demon Slayer world.

So in a spacious and dark courtyard in the Imperial Palace, all kinds of people gathered together.

They were men and women, old people and children, princes and nobles, and famous scholars... Among these people of all kinds, there were even senior military officers and cabinet members. These social elites gathered here to hold an important meeting on the recent movements of the Demon Slayer Corps.

At the head of the shadow sat the initiator of this meeting.

He was a young man with a wretched appearance and sinister temperament. Although he was wearing luxurious clothes, he still gave people the feeling of a monkey in human form. But if someone knew something about the top leaders, they would be surprised to find that this young man was none other than Prince Arisugawamiya, a member of the royal family who now held great power.

He sat upright with his hands folded, and said majestically:

"The Demon Slayer Corps has been too active lately. We must find a way to limit them."

After that, an old man below said:

"Originally, a stable balance has been formed between the demons and the Demon Slayer Corps, but now with the development of technology, the Demon Slayer Corps is getting stronger and stronger. It is obvious that the demons of the past can no longer keep up with the times!"

Then, a young man dressed as a scientist said:

“Then what should we do? Do you want Muzan Kibutsuji to have the power to be fearless of the sun? Then the power of the demon will be too strong, and the balance will still not be maintained.”

The old man continued:

"Since we can't strengthen the demons, we should weaken the Demon Slayer Corps. Especially those who master science and technology in the Demon Slayer Corps, we must focus on attacking them."

"What are you talking about?"