Tatsuma felt that Orochimaru was probably lonely.

The green-skinned monster disciple who was so lonely that he used to look at it was troublesome, but in his eyes at this time, he was also a beloved disciple.

This is a very common phenomenon, especially for researchers or those who work on a project-based basis.

When a key project is completed and a lot of time is free, the heart will be unconsciously empty, unless there are continuous projects, otherwise this mind will fall on the people around you.

For example, he will suddenly express his love for his wife, suddenly care more about his parents and children, and even double his petting of the cats in the family.

Watergate wants to give Kushina a gift, in fact, this is the same mentality, but their work this time is only a week, so he is not like Orochimaru.

And Orochimaru, he has no wife, no parents and children, and no cats and dogs at home, so . His only disciple, Rope Tree, became the object of his concentration and emotion.

But at this time, Jiraiya also came to "fight" for the rope tree, which made Orochimaru, who was already not dealing with Jiraiya, even more dissatisfied with Jiraiya's attitude.

Tatsuma himself doesn't have this situation, maybe he doesn't care about it by nature, but it doesn't mean he doesn't understand.

Looking at Orochimaru's demeanor as if he had come to his ex's house to visit his child after leaving the house, but he didn't dare to get too close, he only dared to look at his child with love and care, and a little guilty, Tatsuma was still a little unbearable.

He took out a scroll and handed it to Orochimaru in a more casual manner, saying, "Orochimaru-sama, I have a personal subject here, are you interested?" ”

"Oh?"

Orochimaru retracted his resentful gaze, looked at the scroll, and took the scroll with both hands, and after opening the scroll, he saw the sealing technique on it, and he chose to unravel it without hesitation.

"Bang~"

As the seal was unsealed, several items fell into his hands, and with Orochimaru's knowledge, he instantly understood what these things were, he raised his eyebrows, and his attention returned completely, looking at Tatsuma, and said:

"Why are you suddenly interested in the corpse vein?"

"I'm not interested in the bones of the corpses."

Tatsuma's answer came from the bottom of his heart, he was really not interested in the corpse bone vein, even if he deciphered the secret of the corpse bone vein in the future, he didn't have the idea of applying it, after all, there were too many shortcomings of the corpse bone vein.

Unless he has the ability to upgrade the corpse bone vein into a blood snares to kill the ashes, but that ability is simply impossible.

And hearing that Tatsuma said that he was not interested in the corpse bone vein, Orochimaru also thought quickly, and then his eyes fell on the half-head forehead guard that Tatsuma had only chosen to wear in recent months, and said:

"The study of genetic information is very difficult, and it took us so long to knock out other interferences from the genes of the first generation of adults, but we have no way to decipher the rest.

Not to mention. You only have one special chakra. ”

With the cells between the Thousand Hands Pillar, none of them were able to study any results, and Tatsuma only had the chakra of Uzumaki Mito, but it was almost wishful thinking to decipher the power of the Uzumaki clan.

In terms of the treatment of the chakra left by Uzumaki Mito to Tatsuma, Orochimaru rarely agrees with Tsunade, that is, to learn the Yin Seal first and learn to use these chakras.

Of course, the idea of the follow-up Orochimaru is different from Tsunade.

Tsunade's idea was to let Tatsuma not have the psychological burden of using the power left by Uzumaki Mito, and to treat it as a chakra that was no different from his own chakra, even if it was really exhausted.

But Orochimaru's idea is to use these chakras to drive the Vajra blockade that only the Uzumaki clan can drive, and treat the chakra as an important resource that can be consumed.

Uzumaki Mito had already dismantled the Vajra Blockade in great detail, and although Orochimaru didn't look at it, he also believed that Ezuma's understanding of the sealing technique was enough to use the Uzumaki Mito's chakra to use a technique like the Vajra Blockade.

Even if he can't crack the power of the Uzumaki clan in the end, then when he encounters such a thing as the Nine-Tails rampage, Tatsuma can use the means left by the Uzumaki Mito to control and even kill the Nine-Tails.

Tsunade is selfish and doesn't want Tatsuma to be too burdened, while Orochimaru is pragmatic and recommends an effective way to deal with it that doesn't require too much effort.

But Tatsuma was not satisfied with either way of dealing with it, and he still decided to carry this "burden".

For no reason, just because he promised.

Even if it takes a lot of time and energy, even if you can't see the possibility of success or the way forward, everything has to be explored by yourself, and Tatsuma is also willing.

He looked at Orochimaru, shook his head slightly, and said, "I still want to try it, I want to understand what is the reason why each race and each person's chakra has its own characteristics." ”

Having already expected this answer, Orochimaru just nodded, did not persuade again, just said: "I will study it carefully, but I can't use the equipment of the base, I can't guarantee the time, and I can't guarantee the result." ”

"I understand, thank you, Orochimaru-sama."

Tatsuma nodded, not having the idea of letting Orochimaru give a promise, after all, it didn't make sense.

Although they can still enter and leave the base now, most of the energy in the base has been shut down, and a large number of equipment and equipment have also been deactivated, leaving only a little energy to continue to cultivate Kato's broken kidney.

But Tatsuma knew that Orochimaru had his own research room, and although the scale was not large, it was much better than Tatsuma, who didn't even have a research room.

If under Orochimaru's conditions, nothing can be studied, let alone Tatsuma himself.

"By the way, the broken kidney is almost cultivated and can be transplanted at any time, what do you think?"

Orochimaru thought of the base, and remembered the kidney that he often wanted to add, and when he heard this, Tatsuma pursed his lips and said, "I want to pass an in vitro test to see if there will be rejection of the receptor immune system."

At the same time, observe whether the kidneys can meet the metabolic requirements of the receptors, after all, it takes too long to cultivate a kidney, it is better to be safe. ”

Hearing this, Orochimaru nodded and said, "We can first test whether the working circuit of the kidney is normal, and then perform an external transplant, and if there is no problem, then carry out replacement surgery." ”

"I'll discuss it with my teacher and seniors, this is the first time we've done this kind of experiment on a human body, this technology is really amazing, I really want to study it in depth."

"The cost is too high."

Orochimaru shook his head, if this technology can be applied on a large scale, then the number of people who die due to internal organ injuries will be greatly reduced, and it will cost so much money, time and manpower to cultivate one of a person's internal organs.

It's almost impossible to scale up unless they can find ways to reduce costs, such as new cultivation methods, or shorten cultivation times, or fully automate the process.

But no matter which one it is, it requires a lot of upfront capital investment, and without the support of the daimyo's grant, where can the two of them find money and someone to study?

"Then let's complete this example first, maybe the scientific research environment of Konoha and even the ninja world will get better in the future, and the high-level will be willing to invest more money to support it, after all, the high-level will also be afraid of death."

Tatsuma didn't delve into it, and the problem that couldn't be solved, if it wasn't urgent, then the best way was to put it down for the time being.

Just like making a paper, the teacher will also teach similar answering skills, first complete the questions of the meeting, and if you encounter a question that you are not sure or cannot solve, put it aside, wait until the other questions are answered, and then look back, maybe you can solve it naturally.

Orochimaru took one last look at the rope tree that seemed to get along well with Jiraiya, and said to Tatsuma, "I'll go back and make arrangements first, and then go to the base, and you can also make follow-up arrangements with you." ”

"No problem."

After Orochimaru left, Tatsuma went to visit Tsunade, who had not unexpectedly gotten up yet, and after telling him what he and Orochimaru thought, he also went home to sleep.

Two days later, Tsunade took two classes out of her place, with Nonoyu and Snake Ci taking care of the classes, and she took Kato to have another physical examination, focusing on the renal arteries, deep veins, and ureters.

After making sure that the body met the requirements of the operation, Orochimaru also conducted some experiments on the newly cultivated kidney, and after confirming that there was no problem, Tatsuma performed the operation.

In terms of medical ninjutsu and medical skills, Tatsuma has not reached the level of catching up with Tsunade, but the cultivation of kidneys, in vitro testing, and subsequent transplantation all belong to the category of "new medical skills".

In this regard, Tatsuma, as a "pioneer", is more certain than Tsunade, so Tsunade takes the initiative to ask Tatsuma to be the chief surgeon, and she acts as a helper, always ready to deal with unexpected situations.

But Tatsuma didn't let the accident happen, the first in vitro kidney transplant in the ninja world ended perfectly, three special material pipes, respectively, connected to the renal artery, renal vein and left ureter, and connected to the kidney in the petri dish.

A temporary flow limiting valve was added to the right ureter to test whether the new kidney could properly filter urine and regulate water balance.

After the operation, Kato had to lie down for a while, and even every time he turned over, he had to pay extra attention not to compress or pull the pipe.

This may be a very uncomfortable process for ordinary people, but as a ninja. Staying calm is the basic cultivation, so after the operation, Tatsuma didn't pay attention to Kato's situation anymore.

The work of taking care of Kato was done by Tsunade, as for the data observation, it was done by Orochimaru, and Tatsuma himself seized the little vacation left and began training.

Holidays always pass quickly, especially when the holidays can't be taken off, Tatsuma is entangled in whether to end the vacation directly to pick up the task, or observe for two more days, and when Kato is sure that there is no problem and directly complete the internal transplant operation, a task directly assigned by the Hokage is issued.