It was getting dark when Shuimu finished his mission and returned home. In addition to consuming a lot of chakra, Shuimu did not feel very tired. After all, the difference in strength was too obvious.

"Xiaochun, I will be very busy for a while. You don't have to come and cook for me at night. You can also go to the flower shop more often."

"Okay. But I've been very busy lately, and I have a lot of tasks to check the barriers on."

"If you are too busy, hire someone. If that doesn't work, post a task for the village to look after the store."

"Do you have money to post missions?"

"Eat and don't talk about sad things. Fortunately, it's almost the end of the month and the salary will be paid."

…

After dinner, the two cleaned up the house. Shuimu took out the spiritual scroll and released the wooden puppet inside.

"Xiaochun, just like last time, I will control the chakra and you will seal it."

As Shuimu spoke, he tapped the puppet's forehead, and instantly the wooden puppet turned into a half-human, half-beast creature that was no taller than waist, with runes all over its body, tiger stripes on its immature face, claws on its hands and feet, and its body slightly hunched forward.

"How does it feel?" Mizuki asked the strange man.

"There's no problem with daily activities, but the consumption in combat is a bit high, even if it was a battle of that low intensity just now." The weirdo actually answered, still in that shrill and childish tone.

"If we don't consider the cost of maintaining the barrier, can it be used in the short term?"

"Don't expect too much. There's no point in defeating a force of Haruno Sakura's level."

"So what's the biggest problem right now?"

"The amount of chakra generated by the body is far beyond imagination. The more intense the battle, the more chakra the body produces. Intense activities stimulate the body to overdraw quickly, making the already limited lifespan even shorter."

"How long can it last?"

"It's hard to say. It depends on the number and intensity of the battles."

"Oh, I see." Mizuki also felt a little embarrassed after hearing the answer.

The monster on the opposite side is actually a clone cultivated with Mizuki's hair as the prototype. In order to solve the control problem of these clones and solve his own moral dilemma, Mizuki suddenly had an idea to refer to the Jinchuriki and made the thing on the opposite side. The principle is actually very simple. He used his own shadow clone's chakra control and sealing skills to seal a shadow clone containing a huge amount of his own chakra into the clone.

In his original conception, the tailed beasts were just a collection of chakras born from the negative will of humans, and the shadow clones were also a collection of chakras that carried his own will. Even though the two were very different in terms of power, the principles of their formation seemed very similar. And for the choice of Jinchūriki, is there a more suitable combination than the shadow clone and the self-clone?

With the idea of ​​giving it a try, the guy on the opposite side was born.

Unlike Jinchūriki, Jinchūriki is based on human will, and the will of the tailed beast is sealed. Mizuki's work is just the opposite. The body is just an empty shell. Mizuki only needs to leave a backdoor in the seal, and the shadow clone with his own will leaks a little chakra, and then it will naturally occupy this body. Mizuki couldn't believe how smooth it was. The consciousness that might have been born during the growth of the body may never have a chance to take shape again, which can be regarded as a matter of concern.

Seeing that the other party had clear thoughts and answered fluently, without any abnormality, Shuimu also felt that he had achieved initial results. However, the most troublesome issue of lifespan was more difficult. Not to mention the clone on the other side, even he himself had the same problem. In theory, the number of cell divisions of any organism is limited. As the cells divide, the ends of the genetic information are constantly worn out, and the cells gradually age. With the cells of Shuimu's hair, which are adult cells, and then using drugs to activate omnipotence to develop into an independent organism, the lifespan of the cells must have almost been used up.

Ninjas are not long-lived creatures. Think about the chakra extraction method. Strength comes from the body and spirit. It is okay to use it appropriately, but ninjas need to fight frequently, and it is inevitable that they will over-exert their body strength. Once over-exerted, shortening their lifespan becomes commonplace. If the mission of the level of Wave Country that Mizuki experienced is repeated twice, it would be a miracle if they don't die young. In Mizuki's opinion, most of the ninja's training and fighting methods are actually outright magic. Overdrawing the body is commonplace, and various experiments are comparable to mad scientists and biochemical crises. However, in such a general environment, it is not surprising that they advance their future lifespan to survive in a precarious situation. It is no wonder that most ninjas age rapidly after their peak period, and there is no sign of the legendary martial arts immortals that the stronger the strength, the longer the lifespan. If there were no such unconventional existence as the cells of Hashirama Senju to extend the lives of a group of villains, the history of the ninja world would have been different.

"That's it. First exchange information, then replenish chakra. You should try to mobilize the power of your body to reduce consumption. It seems that this is the only way at the moment. Without a constant source of chakra, you can only use this stupid method." Mizuki decided, "Xiaochun, start."

…

On the day of the Chunin Exam, a large group of Chunin and Jonin in charge of the exam gathered in the Hokage's office. Mizuki was still dozing off at the back as usual, but maybe time was running out. The Third Hokage didn't say much this time. He just said a few words and announced the start of the exam. The group of ninjas dispersed in the blink of an eye.

The examiner of the first exam, Morino Ibiki, led a group of Chunins to the written examination room.

In fact, Mizuki had thought about meeting other candidates these days, but it would be bad if he ran into Orochimaru. He could only stay in the mission hall and do some paperwork, which was quite relaxing.

Mizuki was not worried about meeting Orochimaru and Kabuto Yakushi in the exam. Under the watchful eyes of the public, they were likely to be big shots and would not care about a small fry like him. It would be fine as long as he did not meet them in private.

Sitting in the examiner's seat near the door, Shuimu couldn't help shaking his head. It seemed that there was no examiner's position in the original work. Looking at Kankuro with a face full of grease in front of him, this was too coincidental. Was Kankuro just playing a puppet show in his current position, pretending to be an examiner to take him out to copy the answers? Now that he had a real examiner, how could he pass the exam? If the plot was really changed because of him, it would be a headache.

"Forget it, don't think about it. It's just like that anyway. Orochimaru's purpose behind the scenes remains unchanged, so there won't be any problem." Mizuki thought, looking around, "Is that Orochimaru? His disguise is good, and he has no sense of existence unless you look closely. The ordinary Kabuto Yakushi, with glasses on, is indeed spy material. Is that Karin over there? Her bright red hair due to her outstanding chakra amount, which is the symbol of the Uzumaki clan. But what about Uzumaki Naruto? Namikaze Minato's genes are so strong that they directly suppressed Uzumaki Kushina's genetic information, leaving Uzumaki Naruto with blonde hair. It seems that although Namikaze Minato is known as a civilian ninja, his bloodline is not simple."

Ibiki was still explaining the rules of the written test on the stage, but Mizuki was not interested in familiarizing himself with everything. It had little to do with him anyway, and other examiners would always be able to take care of the invigilation.

After Ibiki explained everything clearly, Mizuki picked up a pen and started calculating the coordinates of summoning and reverse summoning and the formula for chakra perception direction on the recording board.

"This is more important. Once you figure this out, don't expect to invent some super space ninjutsu like Flying Thunder God Jutsu. As long as you can come up with a way to facilitate travel and concealed travel between the laboratory and the village, it will be fine. As for the Chunin Exam, you can do whatever you want."

It didn't matter that Shuimu didn't pay attention. His actions of writing and drawing on the paper scared a bunch of candidates who were preparing to cheat. As time went on, more and more candidates were kicked out of the examination room for cheating, and Shuimu's non-stop writing scared a bunch of candidates.

Suddenly, Mizuki, who was working hard, felt a chakra fluctuation around him.

"Hmm?" Shui Mu raised his head unhappily, "Although I have already opened the door for you, you can't be too arrogant, right?"

Mizuki, who didn't feel that he had put too much pressure on the examinees, sensed it. "Is it Kankuro?" Mizuki looked at the clock. "It's already this late, no wonder you can't keep your cool. But it seems too late to play puppet show, right?"

Mizuki, who had become interested, stopped what he was doing and looked at Kankuro with interest, which scared Kankuro so much that he stopped his actions.

"I'm really curious, if we don't play puppetry, how are you going to cheat next?" Mizuki thought, turning his head to glance at Temari, "Except for Uzumaki Naruto, these two are the only ones who have a blank paper. I guess Gaara is not interested in giving you the answer. Another blonde beauty, with a good look and figure, but the hairstyle is not to my liking, so I won't give you any backdoors, you're on your own!"

The written test ended ten minutes later. Kankuro and Temari, who were frightened by Mizuki's weird smile and dared not move, had to pin their hopes on the tenth question. Under Ibiki's torture-like questioning, they passed the test smoothly with the help of Uzumaki Naruto's outburst. However, the number of people who passed the test without a blank paper increased by two.

"It's finally over, and I'm free." Shuimu walked out of the examination room and prepared to go back.

"Mizuki, aren't you the mobile substitute for the second Death Forest?" asked Yamashiro Aoba, who had the second mission.

"You said you were a reserve, how can you, the regular candidate, not have any problems? How can I be a reserve?" Shuimu retorted, "Do you think I'm okay or not?"

Mizuki, who had refuted Yamashiro Aoba speechless, went home leisurely.

"Now it's my turn to hide behind the scenes and fish in troubled waters. I wonder if those backers can gain anything?"