After sending away the fourth limb regenerator, everything would be fine. At least no one would come to disturb Uchiha You within seven days, and he could do his own things.

Two months later, Tobirama Senju opened his eyes again. After confirming that he had enough chakra, he immediately made hand seals to release the control of the Impure World Reincarnation and gained absolute freedom.

After that, the Second Hokage started to move his hands and feet freely. After a while, he started to complain unhappily: "Uchiha boy, you little brat, what's wrong with you? Why is there so little chakra?"

"Did you use a bandit as a sacrifice? That's too shabby."

Uchiha You looked at the Second Hokage who had turned the tables, and was glad that the White Zetsu sacrifice used on Ying was not seen by him, otherwise this sinister guy would definitely find a way to make him use it.

Senju Tobirama finally stopped complaining and asked, "Where is the ice ninja from last time?"

Uchiha You replied: "He is still in the Hidden Mist Village. The Snow Clan seems to be in big trouble, so I am not in a hurry to summon him back."

The Second Hokage nodded and said, "You still have a conscience, tell me, what do you want me to do this time when I summon you?"

Uchiha You took out a green crystal and said, "This time I would like you to help me analyze this..."

The moment Senju Tobirama saw the crystal, he exclaimed: "Wood Release Crystal! Such a big piece!"

Obviously, this was not the first time that Senju Tobirama had seen this.

Uchiha You asked, "Have you seen this kind of crystal?"

Senju Tobirama asked at the same time: "Where did you get it?"

The two were stunned at the same time. Uchiha You reacted faster and raised his hand and said, "One question and one answer."

Senju Tobirama nodded and said, "Okay, I will answer first. I have seen this kind of crystal, but it is not this big, nor is it hexagonal, but in the shape of a water drop."

Uchiha You said: "I would like to make a bold guess that the teardrop-shaped crystals you have seen were condensed from the Shodaime, right?"

When Senju Tobirama heard Uchiha You's guess, he was stunned for a while, then nodded and said: "You guessed right, it was condensed from under my eldest brother's skin."

He pointed to the location of his heart and added: "There was a big lump right at this location. We were all scared at the time and thought that my brother was seriously ill."

Then he looked at Uchiha You and asked, "Such a large Wood Release Crystal in your hand, could it be that it was also taken from a human?"

Uchiha Yuchu's crystal is as thick as a five-year-old child's arm, and its length reaches 36 centimeters. If this thing grew out of a human body...

Bah, even if you poke it in, the person will be stabbed to death.

Uchiha You answered honestly: "Of course not, I found an underground cave in the Land of Hot Springs. Deep in the cave is a huge dome cave supported by tree roots. This was dug out from the tree roots."

Senju Tobirama frowned and murmured, "...the huge tree roots and the Wood Release Crystal...interesting."

"I am very interested in this job, I accept it. In addition, I also have a task for you to complete."

Uchiha You didn't expect that the Second Hokage would actually issue a mission, and asked quickly: "What mission is it?"

Senju Tobirama said, "Actually, it was my eldest brother who asked me to do that. He wanted you to take me to see... Tsunade's condition. As you said, Tsunade has left Konoha Village for many years and has not returned. My eldest brother is very worried about her."

"Also, I also want to know why she left Konoha Village."

Uchiha You scratched his head and said, "It's very troublesome to find Tsunade. This lady travels all over the world. Wherever there is a casino or pub, there is a possibility that she will be there, but it is just a possibility."

"However, if you ask why Tsunade left Konoha Village, I can tell you directly."

"What is the reason?"

"What else could it be? I'm just sad."

"Her brother is dead, her lover is dead, and all her relatives are dead. The worst thing is that her closest relatives died in mysterious circumstances, and she was not allowed to investigate. She must be extremely heartbroken."

The Second Hokage's expression did not change, but his temperament suddenly turned cold, and a sharp murderous aura rushed out from him like a cold wind.

Twin-Tailed Three-Wheel Masayo jumped off Uchiha You's shoulder with a start, licked his lips, said nothing, and walked away with a cat-like step.

The Second Hokage, with his white hair fluttering slightly, asked in a cold voice: "Mysterious death? Who died mysteriously? How did he die mysteriously?"

"Uchiha boy, tell me..."

Facing the fierce murderous aura of Senju Tobirama, Uchiha You acted as if nothing had happened and said calmly, "Okay, but I can't describe the specific details. After all, I didn't have the chance to see it with my own eyes."

"That was all during the last war. At that time, our Konoha Village was besieged by the four major ninja villages at the same time. The situation was very ugly and the battle was extremely difficult, so the students of the ninja school graduated early and joined the battlefield..."

Snap——

The floor beneath Senju Tobirama's feet suddenly broke, and the crisp sound of the floor interrupted Uchiha Yu's story. Realizing that he had lost his composure, Tobirama took a deep breath and waved his hand to signal Yu to continue.

Uchiha You had actually expected this a long time ago. Once the details of Konoha Village were discussed, the first two generations of Hokage would definitely not be able to accept it. His pause was to give the second generation Hokage some time to relax.

Seeing that Senju Tobirama had recovered, he continued speaking.

"At that time, Senju Nawaki was also one of the reinforcements sent to the front line. He was already a Genin who had graduated two years ago, and was assigned to his teacher Orochimaru's team. His situation was much better than the other students who were less than ten years old, so nothing should have happened to him."

"But it is incredible that Rope Tree accidentally fell into the detonating talisman trap and was killed under Orochimaru's care."

Senju Tobirama knew Orochimaru and knew that he was a powerful and knowledgeable jonin. The detonating talisman trap that could hide from Orochimaru must be more than just a high-level one.

The ninja who set the trap must have known Orochimaru very well and was familiar with his habit of scouting the battlefield environment. Only a targeted arrangement could deceive his eyes.

Even so, the trap can only hide from Orochimaru from a certain distance and cannot threaten Orochimaru himself.

In other words, the ninja who set the trap was specifically targeting Orochimaru, but his target was actually the rope tree that Orochimaru was guarding.

Therefore, the ninja who made the trap is most likely a ninja from Konoha Village.

Senju Tobirama laughed in anger. He asked, "Anything else? Go on."

"After Rope Tree died, Tsunade proposed that medical ninjas be assigned to the team, and she pushed for this vigorously despite everyone's opposition."

"In the process, she met Kato Dan Jonin, and the two quickly developed into a romantic relationship."

"Unfortunately, during a subsequent mission, the jonin team consisting of the two of them and the jonin of Bokume Kōto was attacked, and jonin Kato Dan died of severe injuries caused by ruptured internal organs."

"It is said that Tsunade had a big quarrel with her teacher, the Third Hokage, and then left Konoha Village and never came back."

After saying that, Uchiha You discovered that Senju Tobirama was muttering something. After listening carefully, he realized that he was muttering: "The dead cannot interfere with the living, the dead cannot interfere with the living,..."

It seems that this second-generation leader really wanted to kill, but was just using this as an excuse to restrain himself.

But Senju Tobirama is not a good person by nature, nor is he a rule-abiding person. He should still be considering the interests of Konoha Village.

If the Third Hokage died during the war, even if Orochimaru was here, Konoha Village would experience chaos. If the chaos spread to the front line, it would even be a question of whether it could survive.

In the mind of the Second Hokage, a true politician, personal grudges are far less important than political interests. The greatest and most important political interest he values ​​is the continuation of Konoha Village.

I can only say that the Third Hokage was really lucky.

The Second Hokage was not a pushy person, he seldom used words to persuade others.

What Senju Tobirama is best at is using policies and interests to restrain others, such as using the interests of the Security Department to control the Uchiha clan.

In addition, he is also good at using the blade to silence others, such as Uchiha Izuna who fell under the Flying Thunder God Slash.

If it were peacetime now, Tobirama Senju would definitely not hesitate, but would immediately stand up and go to Sarutobi Hiruzen to ask about the details. The most likely possibility is that the entire village of Konoha will hold a funeral tomorrow, and the day after tomorrow they will welcome the Fourth Hokage to the throne.

After a long while, the Second Hokage slowly said, "Uchiha You, I am upset now and cannot work for the time being. Take me to find Tsunade first, and I will relax while I am here."

Uchiha You naturally agreed without hesitation.

He found Miwa Masayo and asked her to inform Yaeko and tell Uchiha Shisui to rest tomorrow morning.

Afterwards, Uchiha You took Miwa Masayo and Senju Tobirama and slipped out of Konoha Village through the loophole in the Konoha Village barrier.

When passing through the barrier, Senju Tobirama became angry again. He told Uchiha You that as long as it was properly maintained, there should be no loopholes here even after twenty years.

Uchiha You asked curiously, "Nidaime, as far as I know, Konoha Village has a professional barrier team. Is there a big problem with their maintenance?"

After a quick inspection, Senju Tobirama shook his head and said, "This is not a maintenance issue. Someone made some changes to the barrier and deliberately dug a gap."

“This is man-made destruction.”

Uchiha You understood, it was the Root.

As the department in the Third Hokage's group that is responsible for handling dark affairs, they cannot guarantee that every mission they go out on will go according to plan. When encountering an emergency mission, there will be no time to apply for a cover-up mission, so they need such a hidden passage.

Especially since Danzo Shimura was ambitious, he needed access passages that could bypass the Third Hokage's surveillance. It was not surprising that he used the power granted by the Third Hokage to open some additional passages.

The person who is most likely to carry out this task is the most knowledgeable Orochimaru, who habitually digs a few more passages as his own secret passages.

After actual practice, Shimura Danzo also mastered this technology and dug many holes on his own.

The Third Hokage, Danzo Shimura, and Orochimaru all knew that there were holes in the barrier, but they didn't know how many there were. Unknowingly, the leaders of Konoha Village dug holes in the barrier for their own convenience, leaving it in its current state.

The barrier, which was originally designed to allow only one door to open, was destroyed to pieces and even on the verge of collapse.

This led to the need to set up a full-time barrier team, and by increasing maintenance efforts, the existence and operation of the barrier could be guaranteed.

In the past twenty years, Konoha Village has prospered several times, but the number of problems that have accumulated is even more shocking.

Tobirama Senju is the second Hokage. He is the most politically knowledgeable of the three Hokage and the person who knows Konoha Village best. Every system and most functional departments of Konoha Village were designed by him personally.

Just through the limited contact, Senju Tobirama could estimate the situation of Konoha Village. After thinking for more than ten minutes, he asked, "Uchiha boy, how many people are there in the Anbu now?"

Uchiha You looked at him in surprise, and then replied helplessly: "Second Hokage, the number of Anbu is a secret of Konoha Village. As a member of the Uchiha clan who is under guard, it is absolutely impossible for me to know."

Senju Tobirama snorted coldly and retorted: "Nonsense, I asked you, of course I am sure."

"Of course I know that the Uchiha clan is being targeted, but because you are being watched the most closely by the Anbu, you should also be the ones who know the Anbu best."

Uchiha You said helplessly: "Nidaime, you think the Uchiha family is too powerful. Our clan leader and elders don't know..."

Senju Tobirama said impatiently: "Of course I know they don't know, but I also know that you definitely know!"

Uchiha You: "..."

Senju Tobirama's eyes were like knives, whizzing out from his black eyes, staring at Uchiha You and making him feel uncomfortable all over. In the end, he could only bow his head and admit:

"Well, I do know."

Uchiha You said: "There are currently 550 to 650 Anbu members. They are now distributed across all battlefields and the Land of Fire, undertaking dangerous intelligence and assassination missions. The specific number changes every day, but it generally remains within this range."

Senju Tobirama murmured, "Increased nine times? In other words, Hiruzen's prestige is less than one-tenth of mine. How can he do so badly?"

Uchiha You curled his lips and said, "In fact, there is more than that. There is also a root in the village founded by Shimura Danzo. It belongs to the Anbu in name, but it is actually his private army."

Senju Tobirama asked in confusion: "The Root, Danzo's private army, why do you say that?"

Uchiha You replied: "It depends on the organization. The members of the Root are not selected from the Konoha ninjas, but children recruited from orphanages and ninja clans, as well as orphans from outside. After strict brainwashing, they become perfect tools that only obey Danzo's orders."

Senju Tobirama was furious: "Shimura Danzo is creating a village within a village. What does he want to do? Is he going to rebel?"

Uchiha You threw his hands up and said, "I don't know, because he is already dead. He was killed by a Wood Release Ninja, and the Root was also severely damaged."

Senju Tobirama was stunned, then looked at Uchiha You and asked, "A Wood Release Ninja killed Danzo?"

Uchiha You looked at Senju Tobirama fearlessly and said, "Yes, in the Root's secret Wood Release human laboratory, Danzo was killed by Wood Release Ninjutsu, along with dozens of researchers and more than 200 Root ninjas."

After listening to this, Tobirama Senju silently withdrew his gaze and said bitterly: "Wood Release human body experiment, it must be a living experiment... Danzo should be killed."

The two people and the cat stopped talking and just continued on their journey in silence.

After a long time, the Second Hokage suddenly said in a low voice: "Good kill."

And then he never spoke again.

In the past fifty years in the ninja world, Tobirama Senju can be said to be the person standing at the pinnacle of intelligence. Even Orochimaru can only perform better in scientific research, and he is obviously much worse in other aspects.

Today he saw the Wood Release Crystal that Uchiha You took out, and also listened to Uchiha You's narration without deliberately concealing anything. Naturally, he was able to judge who killed Shimura Danzo.

After careful consideration, Senju Tobirama found that he had no reason to say that Uchiha You had killed the wrong person.

Although he could not understand why Sarutobi Hiruzen indulged Danzo Shimura, Danzo's actions would undoubtedly cause great harm to Konoha Village and would be a complete betrayal of Konoha Village.

Then, in Tobirama's mind, Sarutobi Hiruzen, who condoned Danzo, was incompetent, and it was even impossible to rule out the suspicion that he, the Third Hokage, was pursuing personal gain.

Since Shimura Danzo's guilt is certain, it was right for Uchiha Yu to kill Danzo.

Tobirama Senju did not consider the problem of program errors, nor did he dwell on the fact that killing Danzo should be the power of the Hokage. After all, the Third Hokage Sarutobi Hiruzen had indulged Danzo for nearly 20 years, which was equivalent to giving up his own power.

After thinking for a long time, he had to admit that Uchiha Yu's killing of Danzo was the best outcome for Konoha Village.

So when Senju Tobirama whispered: Good kill, it meant that he knew it was Uchiha Yu who did it, and he agreed to endorse him in killing Danzo.

After hearing this, Uchiha You naturally smiled.

In the future, the leader of his Xiandao Research Institute can only be the master of forbidden techniques, Tobirama Senju.

Although the Ice Release Ninja Ying is also good, she can never be compared with the Second Hokage. After all, this guy has developed a whole scroll of forbidden techniques.

Senju Tobirama's development ability, which is not bound by any rules, is extremely important for the research of immortal ways that explore the unknown.

Since he wanted to use Senju Tobirama as the main force in research and development, of course he had to solve Senju Tobirama's mentality problem to prevent him from not working hard because he was unhappy.

After all, when it comes to R&D, whether researchers are working hard or not depends entirely on their own awareness, and there is no way to check that.

Of course, in Uchiha Yu's plan, he is still a few steps away from dealing with Senju Tobirama.

The most urgent task is to find Tsunade first, complete the task assigned by the first Hokage, and appease the second Hokage's manic heart.

Then, he would find an opportunity to recommend Uchiha Shisui to the calm and composed Second Hokage.

Shisui was his most regretful disciple and the grandson of Uchiha Kagami, so at least he would not refuse directly.

As long as the two of them establish a close connection, there will be no problem at all in the future.