In the Hokage's office, with Mizuki's departure, the place returned to calm. As single women, Tsunade and Shizune actually had no experience in taking care of little girls. The two looked at the somewhat nervous Karin, not knowing where to start to comfort her.

After Mizuki left, Karin couldn't help but become even more uneasy because the only person she was relatively familiar with was no longer there.

Seeing that the atmosphere was becoming more and more awkward, Tsunade coughed twice and signaled Shizune to go up and help.

Jingyin had to obey the orders of her immediate superior and master, and besides, since this little girl looked a little younger than her actual age, she might be easier to talk to.

"Don't be nervous." Jingyin said with a smile on her face: "We have no ill intentions. It was just a misunderstanding before..."

Seeing Shizune with an awkward smile on her face, Karin did not respond. She possessed a secret technique, Kagura's Mind's Eye, which made her extremely sensitive to chakra and could easily tell whether a person was lying. She could also roughly tell whether a person was kind or malicious.

Therefore, her attitude towards Tsunade and Shizune changed rapidly after Mizuki's conversation. Although she still couldn't figure out the "Uzumaki Family" mentioned by the three people, Karin, who had the good fortune to escape from the crisis, could still judge that her current situation had greatly improved. It was just because she was not familiar with Tsunade and Shizune that she didn't know how to respond. Now, Karin was just a displaced little girl, and she was far from the strong and stubborn character she would be three years later.

Seeing that Karin still didn't say anything, Tsunade had no choice but to say to Shizune: "Send her to the medical department for a thorough checkup first, and then you can make an identity registration for me later."

First, you need to carefully check your body for hidden dangers, such as restrictions, illusions, and other issues. All of them need to be verified. It would be bad if you have good intentions but become the enemy's backhand.

After Shizune and Karin left, Tsunade was the only one left in the office. After thinking for a while, Tsunade took out a ninja file from the drawer. The photo on the cover was actually Mizuki who had left not long ago.

Tsunade quietly flipped through the information. There were many things in it, much more than the public information. As the first jonin to be promoted after Tsunade came back because of everyone's recommendation, it is impossible for Tsunade not to have done a careful investigation. After leaving Konoha for so many years, it is no longer the same as when Tsunade left. As a jonin who is the pillar of the village, how could he be promoted without careful investigation?

In this file, there is a lot of information about Mizuki, including his background, the evaluation of the ninja school, his mediocrity as a Genin, his inaction as a Chunin, and even several suspicious actions and serious mistakes during missions, which led to him being severely punished. Although he later regained trust, even now, Tsunade has some information that Mizuki has not revealed.

Among the most concerning points, the real effect of the universal potion and the purpose of its development cannot be verified because there are too few samples circulated. Even if Tsunade has some guesses, she has to give up the exploration. There was also the time when she accompanied Hyuga Hiashi on the mission to the Sand Village. From the simple and unclear words of Yuhi Kurenai who woke up, it can be judged that it was Mizuki who used a strange human puppet thing to reverse the situation in one fell swoop, so that they could persist until the arrival of rescue. Afterwards, Konoha's intelligence department also investigated the messy battlefield, but except for the puppet fragments on the ground, nothing useful was found. Later, the matter was left unresolved due to the vacancy of the Hokage. When Tsunade came back, time had passed and it was already past the good time to investigate.

Strictly speaking, a ninja is actually such a profession, which involves gathering intelligence on the enemy, increasing the chances of winning, and hiding one's own cards from the enemy.

From this point of view, Mizuki did not make any mistakes, but some of the things he hid were too shocking, and even the Hyuga, a thousand-year-old powerful family, were tempted.

Tsunade felt troubled when she saw the information that Mizuki and Hyuga Hiashi had been interacting frequently recently. It was never a happy thing for a big family to be too close to the ninjas of the Hokage lineage and then exert too much influence. Tsunade was also very curious about the things in Mizuki's hands that even the knowledgeable Hyuga family was coveting.

"I must find an opportunity to test the waters. Strong guys are either unruly or have all kinds of quirks. What have the three generations of old men done over the years? All of their subordinates are so disobedient."

…

After returning home, Shuimu felt very bored. He picked up the Diamond Seal and read it for a while, but found that he couldn't read it at all. When he thought that there was a ready-made member of the Uzumaki family who came to him right after he had to study the secret technique of the Uzumaki family, Shuimu felt it was extremely unreal. As for why Karin broke the agreement and came directly to him, Shuimu was also very puzzled. If he had the chance, he must ask this confused girl what she did.

"But now?"

Mizuki finally threw the scroll aside. It was too inefficient now, so he could only try something else. Moreover, there was a great discovery that the fake Jinchūriki mentioned two days ago that needed to be carefully considered. It was a bit unexpected, but also reasonable. The problem involved was nothing else, but precisely the hidden clone technique that had been understood but always ignored.

The Hidden Clone Technique originated from the Second Hokage, Senju Tobirama. For a long time, everyone thought that the original intention of this development was to develop a clone-type ninjutsu for intelligence reconnaissance. The physical clone, the extension of will, and the return of memory are really suitable for the ninja's reconnaissance mission. The logic is self-consistent and perfect, without any flaws. The widely circulated news has almost no doubt. But is it really so?

A few months ago, Mizuki created a physical clone of Jinchūriki based on the similar characteristics of Shadow Clone and Tailed Beast, which are both chakra aggregates. Mizuki has always believed that this is just a coincidence in the ninja world. It just so happens that Shadow Clone exists in a similar way to Tailed Beast, and can be made into a degraded version of Jinchūriki.

But judging from the news we got from the fake Jinchuriki a few days ago, this is not the case at all.

"Sure enough, there aren't that many coincidences in this world..."

Judging from the information obtained from the fake Jinchūriki, the shadow clones were not developed for the simple reason of reconnaissance. From the very beginning, the existence of the shadow clones was to imitate the tailed beasts. In terms of existence, the shadow clone technique is actually an imperfect simulation of the tailed beasts without mastering the Yin-Yang escape technique.

The method of copying was not invented by Mizuki, but by Senju Tobirama.

The human spirit can be compared to the Ten Tails, and the chakra can be divided to form physical clones similar to the nine tailed beasts. However, since ordinary chakra is too low-level and there is no supply of mental and physical strength, it cannot last long.

In Mizuki's opinion, it is understandable for ninjas to use tailed beasts, or even imitate them. Unfortunately, the shadow clone is only a semi-finished product after all. Tobirama Senju is not a Jinchūriki, nor does he know the Sage Mode, and there is no high-quality chakra energy for his experiments. Stuck at this point, he was ambushed to death before he had time to perfect his ideas. The semi-finished product of the hidden clone almost changed the pattern of the ninja world. It was not until now that Mizuki had a preliminary understanding of the essence of this technique that made Uzumaki Naruto so powerful.

"If that's the case, then I actually took the most crucial step without even realizing it. Jinchūriki clone, this path is actually the right one."

It was originally just something that was created by accident, but it turned out to be exactly the same in principle and original intention as the second Hokage, Senju Tobirama. If Senju Tobirama had the all-purpose potion in Mizuki's hand to easily make self-clones, or if biotechnology at that time could reach the level of Orochimaru's current research, perhaps this kind of fake Jinchūriki would have appeared long ago, instead of waiting for Mizuki to discover its value.

Although this kind of principle has not brought any improvement to Shuimu's strength at present, it points out the direction of the development of Shuimu's power system in the future.

"Using Senjutsu Chakra as a support, imitating the existence of the tailed beasts? It's just right, I didn't go astray..."

It seems that Mizuki is not the only one who wants to start with the tailed beasts. Taking action against Shukaku may be the most successful adventure so far.

…

Near noon, Xiaochun didn't come, but Xianglin came. Shuimu had no choice but to bring Xianglin into the house. Seeing the little girl sitting there a little uneasy, Shuimu felt that he couldn't say anything to complain.

"Ah." Mizuki sighed and asked, "Where is the accommodation that Lady Tsunade arranged for you to live?"

"I don't know, there doesn't seem to be any arrangement."

"No way." Shuimu suddenly laughed bitterly, "Then where do you live?"

"Hokage-sama told me to follow Mizuki-sensei's arrangements..."

"I arrange it?" Shui Mu was suddenly at a loss whether to laugh or cry, "How can I arrange it... Oh, no, I have a place..."

Shuimu suddenly remembered that he actually had a place, but in the end he still had to discuss this matter with Xiaochun.

Looking at Karin who was waiting for Mizuki's arrangement, Mizuki asked, "What can you do? Do you have any special skills that can be put to use?"

"Besides being able to heal injuries, I don't know what else I can do." Karin replied nervously, "I like to collect perfumes, and I am extremely sensitive to smells."

"Taste? Smell?" Shuimu nodded, "That's it, maybe it will be useful..."

As Mizuki was speaking, the door opened with a noise, and he saw his fiancée Chie Tsubaki walking in. Then he was surprised to see Karin sitting there stupidly.