Konoha, I have the Herrscher of the End core in my body.

"You're sure you do this now."

In Naruto's laboratory in Hot Spring Country, Naruto looked at Sasuke with a serious face. When Karin went to find someone to print books, Naruto brought Sasuke to his laboratory and introduced him to some of the laboratory's conditions. Then Sasuke couldn't wait to take action.

"Didn't you say that I am the reincarnation of Indra's chakra? Since Uchiha Madara can do it, I can do it too." Sasuke said with determination.

"What I mean is that there is no need to be so anxious. You have to know that we have plenty of time later." Looking at Sasuke with a determined face, Naruto continued to persuade.

"There's no need for that. If I die like this, it means I'm nothing special." Sasuke said without waiting for Naruto to react. He picked up the syringe on the laboratory table and gave himself an injection.

"You, forget it. Even if something goes wrong, you won't die."

Sasuke's behavior made Naruto sigh slightly. In order to maintain it, Sasuke was willing to pay any price, even though he had told him the truth. Sasuke was also eager to confront Itachi, so when he came to the laboratory and saw the first generation cells that Naruto mentioned, he couldn't wait to give himself an injection.

Although this is the first time that Naruto's real body has come to this laboratory, his shadow clone has stayed here for quite some time. This laboratory was built by the shadow clone.

Naruto did not agree with Sasuke's reckless behavior. Although theoretically, there would be no problem if Sasuke fused the first generation cells, or even if he himself fused the first generation cells, this kind of physical experiment could be carried out after some experiments first.

"It shouldn't be a problem. If we calculate the time, Obito should be about the same age, and he should be integrating the cells of the first generation."

Looking at Sasuke, who sat quietly on a chair beside him after injecting himself with the first-generation cells, Naruto couldn't help but think of Obito. When he integrated the first-generation cells, there was no problem with his body, and in terms of age, Sasuke now is about the same as Obito at that time.

"The integration went very smoothly. I was overthinking it. No, I was being cautious."

Six hours later, Naruto took some blood from Sasuke who had just woken up for examination. There was no problem at all. Sasuke was sitting there at first, and then he fell asleep directly. Nothing happened in the meantime. He fused the cells of the first generation in his sleep. If the second generation Hokage, Orochimaru, Sarutobi Hiruzen and others knew about this, they would probably be furious.

In order for Konoha to regain the power of Wood Release, the Wood Release experiment began during the time of the Second Hokage. As a result, countless people were consumed and countless people were killed or injured, but in the end only one defective product, Yamato, emerged. As for the Uchiha clan, the few people Naruto knew, all easily integrated the cells of the First Generation.

"How do you feel?" Naruto asked Sasuke who had just woken up.

"It's never been so good." Sasuke looked at his hands, his expression a little excited. After all, this was Wood Release. In Konoha's history class, many deeds of the first Hokage were recorded. Although Sarutobi Hiruzen boasted that he was the strongest Hokage in Konoha, he was obviously not shameless enough to tamper with the deeds of the first Hokage.

"That's good. As for Wood Release, I don't have any information here, so we can only study it ourselves. However, there is a record about Wood Release in Konoha's Sealed Book. I will find a way to obtain it later."

As Naruto spoke, a branch slowly appeared in the palm of his right hand. Of course, this was not Wood Release, but the power of the Herrscher of Death. However, its form of expression was no different from Wood Release. This was also what Naruto had told Sasuke before.

He is a descendant of the Uzumaki clan. Theoretically, there is no problem in fusing the cells of the first generation. Of course, this is just an excuse. Although the cells of the first generation Hokage are very powerful, they are not on the same level as the core of the Herrscher of the Death.

Strictly speaking, the reason why Sasuke was so eager to fuse the cells of the first generation, besides the reason on Itachi's side, was also because the power that Naruto had displayed before was too strong. He easily defeated the third generation Hokage and escaped from Konoha unscathed. He was unwilling to fall behind by so much.

Even if Naruto told Sasuke that he was so powerful because he was the Nine-Tails Jinchuriki, Sasuke would still be very unwilling to accept it.

"Sasuke, there is one thing you have to remember. The first Hokage was not powerful because of his Wood Style. He was powerful because of his powerful chakra. Even if it wasn't for Wood Style, he would still be powerful. Don't put the cart before the horse."

"I remember."

"This is the Rasengan, a ninjutsu invented by the Fourth Hokage, my father. By incorporating the properties of chakra, it can become more powerful. For example, this is my Wind Style Rasenshuriken. Kakashi-sensei has a ninjutsu called Raikiri, which was invented by incorporating the Rasengan into the lightning-attribute chakra. But I heard that he didn't completely complete the change in its properties."

After Sasuke fused with the cells of the first generation, Naruto began to teach him to practice ninjutsu, and then gave the Rasengan to Sasuke, as well as Raikiri, which was Sasuke's original Chidori. For him who also possessed the ability of the Herrscher of Lightning, it was too easy to replicate Raikiri. Not only Raikiri, but also the Lightning Kirin created by Sasuke later, he could replicate it.

"The next step is the Flying Thunder God Technique. With Sasuke's Samsara Eye's Heavenly Hand ability, it shouldn't be a problem for him to learn the Flying Thunder God Technique."

In order to learn the Flying Thunder God Technique, one must have a hidden talent, that is, a talent in space. Sasuke undoubtedly has such a talent.

"Multiple Shadow Clone Technique, Kamui."

While Sasuke was practicing the Rasengan and Wood Release, Naruto was not idle either. He used the Kamui of Obito's eyes in the Domination Theater, and then experienced the process with the ability of the Herrscher of the Void. He also created multiple shadow clones to experience it, and let the original body use Kamui on the shadow clones to verify its power.

"I'm tired after a day, let's go take a hot spring bath. Now I can be considered a person with a private hot spring."

This mansion in the Land of Hot Springs naturally has the characteristics of the Land of Hot Springs. There is a private hot spring in the backyard, which is divided into two areas for men and women because of the presence of Karin Uzumaki.

"Ninjutsu is obviously more effective in daily life, but it has to be used in combat."

There are many hot springs in the Land of Hot Springs, and the help of earth-style ninjas is indispensable. Many hot spring hotels and taverns use earth-style ninjas to guide the construction of hot springs.

The application of ninjutsu in daily life has actually been used in the ninja world for a long time. Naruto was not the first person to come up with it. It’s just that these ninjas mainly serve daimyos, nobles, and officials, and the common people below cannot enjoy such treatment.

"Haha, of course, I'm very good at it."

In a tavern in a certain town in the Land of Fire, a middle-aged white-haired uncle with a forehead protector with greasy words on it was hugging girls on both sides while telling stories about his adventures, making the two beauties beside him laugh continuously.

It was not until late at night that this middle-aged white-haired uncle staggered out of the pub. From his appearance, it was obvious that he had drunk a lot.

"Who, come out?" The middle-aged white-haired uncle who was swaying left and right on the street suddenly changed his expression, and his swaying body immediately straightened up, and he shouted coldly towards the right rear door.

"Master Jiraiya, the Third Hokage has an urgent message." A Konoha Anbu instantly appeared in front of him and handed him a scroll with a respectful look. This middle-aged white-haired uncle was none other than Jiraiya, the Toad Sage, one of Konoha's three great ninjas.

After handing the scroll to Jiraiya, the Anbu immediately disappeared.

"That old guy from the third generation, what's the matter..."

Jiraiya took the scroll from the Anbu and opened it while muttering something. He put his right hand on the scroll and deciphered the secret code on it. For the sake of safety, the Konoha Anbu usually used secret codes when transmitting messages.

"What's going on?" Jiraiya, who had originally looked calm, immediately turned cold after seeing the contents of the scroll clearly, because the content on it was that Uzumaki Naruto had defected.

"The second individual match of the Chunin Exam will now begin."

Although there were major changes during the Chunin Exam, and even the tower of the 44th Training Ground was destroyed, Konoha quickly found a new training site and continued the Chunin Exam.

The daimyos and nobles of the five major countries, as well as nobles and chiefs of some small countries, all rushed to Konoha because of the Chunin Exam. Unless Konoha was destroyed, there was no way Konoha would cancel the Chunin Exam at this time.