Naruto: The Strongest Sage.

Haruno Sakura actually didn't realize that she was now very famous. During the Konoha Collapse Plan, she saved hundreds of people for a whole day and night, which made her the most prestigious medical ninja of the younger generation.

The most interesting thing is that after examination at Konoha Hospital, it was discovered that Haruno Sakura was not a registered medical ninja of Konoha.

These days, the door of the Aoba family has been visited countless times by the Konoha Hospital. They just want Haruno Sakura to join the Konoha Hospital.

But Haruno Sakura is now so overwhelmed by Aoba's homework that she doesn't even realize she has become famous, so she has no intention of going to work at Konoha Hospital.

"Although the Palm Immortal Technique is not considered a top-level medical ninjutsu, it requires the conversion of Yang Release Chakra when used, and there will be considerable loss when it is input into the injured person's body.

Therefore, the energy consumption of this technique is not low. Using it continuously for hundreds of times is beyond the scope of ordinary ninjas. Can you tell me how you did it? Of course, if this involves your unique secret technique, you can also refuse. "

Tsunade was not in a good mood at this time. Because she sensed a huge amount of chakra in Haruno Sakura. And this chakra made her feel familiar. This chakra carried the aura of the original Senju Hashirama.

Tsunade subconsciously thought of the human experiment of Hashirama's cells. She thought Haruno Sakura was one of the test subjects. Even Kamikawa Aoba was secretly conducting Hashirama's cell transplantation experiments.

Of course, her guess was not wrong, because Qingye was indeed doing these things. The only difference was that he did not conduct human experiments.

Tsunade never approved of Hashirama's cell experiments. No one likes to watch a group of people experimenting on their grandfather's body.

This was the reason why she left Konoha.

"Ah, Hokage, you said this." Haruno Sakura hesitated, which made Tsunade misunderstand that she was unwilling to say it.

"No, it's not. I just..."

At this time, Qingye's voice came from the door.

"She hasn't participated in that kind of in-depth experiment yet, so it's hard to describe the answer you want in words."

Tsunade looked back at Aoba.

"Kamikawa Aoba, you need to give me an explanation today." Tsunade is actually very optimistic about Kamikawa Aoba. She needs an assistant with strength and means. But the premise is that this person cannot be the second Orochimaru or Shimura Danzo.

"No need to explain. I can tell you clearly that the answer is the result of Hashirama's cell experiment. It's just that the process may be a little different from what you think. Come with me, Sakura too. You have done a good job on your homework. It's time to start to go a little deeper."

Qingye said, and took the two of them directly into his underground laboratory.

Of course, the laboratory is now completely different from before. Apart from other things, the area alone has increased by more than five times.

Qingye also divided the place into several different areas, and the one they were taken into was only the outermost laboratory.

"I believe you also know that Konoha has never stopped researching the cells of the first Hokage. This matter will not be very comfortable for Lady Tsunade. But here, I need to explain a fact. The cells of the first Hokage represent a whole new era."

At this time, Tsunade was also shocked by the laboratory in front of her. The laboratory was a bit scary because a large number of bottles and jars were soaked in some flesh and blood creatures.

Many of them were distorted and deformed pieces of meat. The visual effect was incredible. Aoba clearly felt that Sakura's steps paused.

"Those are some of the ones that failed in cultivation. But they are still useful, so I kept them. Look here, this is the key."

Aoba said, pointing at some peculiar pieces of clothing.

When Sakura saw those vest-style clothes, she immediately showed a strange expression. Because she had one of these clothes on her. She was able to perform the Palm Fairy Technique hundreds of times in a row, and it was this dress that provided her with a constant supply of chakra.

But she never knew that such clothes were made here.

Tsunade's vision was naturally not comparable to Haruno Sakura's. She stepped forward and gently touched it, and immediately understood the origin of this thing.

"This is... something you grew using your grandfather's cells?"

"Yes, this is a chakra biological coat cultivated using the cells of the First Hokage-sama."

Hearing this, Sakura suddenly felt a little bad because she now knew that the clothes she was wearing were cultivated using the cells of the first Hokage.

No wonder I felt it was weird. Now that I think about it, I am wearing a human skin vest!! And the vest is alive!!

Thinking of this, Xiaoying suddenly felt uncomfortable all over. Anyone who knew that they were wearing human skin would have this feeling.

However, Tsunade and Aoba ignored the girl's discomfort. Tsunade had realized something.

"Instead of performing a human cell transplant, you tried to use Grandpa's cells to develop a supplementary chakra tool?"

"It's not an attempt, I already have a finished product. To be honest, this is not easy. The First Hokage's cell proliferation ability is too strong, and it will completely go out of control if you are not careful.

It was not easy to shape it into the desired form. It took me a long time to finally find a relatively effective method. ”

"Targeted training?" Tsunade's sudden words made Aoba stunned for a moment. Because Tsunade was right.

It's directed culture. If you let Hashirama's cells grow on their own, it will only grow into a disordered piece of meat in the shape of Cthulhu.

Therefore, if one wants to shape this thing and allow people to manipulate it smoothly, targeted training is required.

The chakra coat on Sakura's body was not actually cultivated from Hashirama's cells. Instead, it was made by fusing Sakura's own cells with Hashirama's cells. After failing dozens of times, it succeeded once.

There are many failures here, one reason is that Hashirama's cells are too strong and Sakura's cells are too weak, making it difficult to maintain balance.

Another reason was that he lacked experience in the first operation. After trying many times using Sakura, Kakashi and his own cells, Aoba had basically mastered this technique.

Unfortunately, this technique has a huge flaw: Not all human cells can be manipulated in this way.

In fact, after the experiment was successful, Aoba immediately collected a lot of biological samples and expanded the scope of the experiment.

But in the end, he came to a conclusion that made him extremely uncomfortable. That is, the cells of most civilian ninjas could not complete this kind of cultivation.

The chance of success for ninjas from the major ninja clans is more than ten times higher than that of civilian ninjas.

In this way, Aoba directly chose to hide this technology.