Midsummer is coming to an end, and every evening, there will be a hint of coolness.

With such a high vegetation coverage rate in the Kingdom of Fire, the weather in this season is quite pleasant.

For Naruto Uzumaki, life is not that wonderful.

"How is the nature of chakra so difficult?"

It feels so uncomfortable that it has no place to use energy. Even though I have asked Asma, who is proficient in wind escape, and found a little way, it is still far from mastering it.

The nature of chakra is a practice without any possibility of taking advantage of others, and it is quite boring.

Haki Kakashi naturally asked Uzumaki Naruto to use the Shadow Cluster to speed up his practice.

At the same time, Kakashi also asked Mizuki for help, hoping to use Mizuki to help Sakura practice the concentrating technique or other methods to alleviate the mental impact caused by Naruto's practice, but Mizuki refused.

"Care is a mess, Kakashi, have you forgotten that the multi-shadow clone technique itself is a complete forbidden technique. You can think that using it to accelerate the change of chakra's nature is already very dangerous. If you increase the burden on Naruto again, the risk will be increased exponentially."

"Is it so serious?"

Looking at Kakashi who was puzzled, Mizuki, who was sitting behind the desk, explained helplessly:

"When the shadow clone disappears, it will provide good feedback on experience and memory, but fatigue caused by mental shocks will also accumulate. When it reaches a certain level, the ninja will lose the ability to move or faint. This is a human self-protection instinct. Coma is a physiological phenomenon that regulates its own functions. If you just escape, it will have bad consequences!"

"This kind of consequences are both minor and serious. If the impact is not big, of course there is no problem, but Naruto is obviously not listed!"

"Sakura's physical fitness is far inferior to Naruto, but the two have one common characteristic, that is, the number of shadow clones is not subject to chakra, which is a good thing for practice. The concentrating technique I taught Sakura is to make up for his mental and physical shortcomings and allow him to fully utilize the advantages of chakra's large volume. But I still strictly limit the number of shadow clones. The reason is that you must also know that Sakura's physical strength is far inferior to Naruto."

"Naruto has excellent physical strength. If he uses all his strength, he can divide hundreds of shadow clones, and the consequences are also very serious. If he is not protected, he may cause permanent mental damage. This is a short-lived move that is not worth the effort!"

Seeing that Kakashi was still a little confused, Mizuki continued,

"To give an inappropriate example, Sakura can run ten kilometers, Naruto can run one hundred kilometers, and the secret technique of the mind can increase Sakura's running distance by ten times to one hundred kilometers. If it is on Naruto, it is 1,000 kilometers, which is also beyond the limit of his own endurance. How big do you think the damage caused by running ninety kilometers more and the damage caused by running nine hundred kilometers more?"

"Oh, I understand if you say that!"

Haki Kakashi suddenly realized,

"The physical fitness is different. If Naruto is, he will definitely do his best to practice. The more shadow clones, the greater the instant damage it will cause. If this large amount of damage is superimposed in a short period of time, it will have serious consequences."

"That's about it. If you want to use the Concentration Technique, you must let Naruto control the number of shadow clones, which will lengthen the time period of damage. Instead of doing this, it's better to let Naruto let go. When he naturally exhausts, he will stop and recover on his own. This may be faster. Naruto's physical fitness and strong will are equivalent to having a buffer for physical and mental fatigue, and you don't need to interfere again. If you change it at will, it will be more cost-effective!"

And there is another point. With Naruto's chakra amount, the magic technique of concentrating the mind is definitely not enough, and a complete soul gathering array must be used.

When Naruto was practicing, the moment when the Shadow Clan disappeared instantly and caused mental fluctuations, and then used the sealing technique to interfere. Who knows if it will affect the chakra of Huo Fukumizu Gate and Uzumaki Kushina in his body?

Mizuki has been desperate until now and has not attacked the Nine Tails in Naruto Uzumaki's body, just not wanting to affect the chakra marks in Naruto's body.

"That's all that?"

Kakashi spared her head, as if she was a little dissatisfied with Naruto's progress.

"A S-level ninjutsu that combines morphological changes and morphological changes, some ninjas will never learn it in their entire lives, and you are still picky!"

Shuimu curled her lips,

"And it is quite dangerous to hold the wind attribute chakra with strong destructive power in your hands. If used improperly, it may become disabled."

"Well, I had expected this, and there must be more or less risks in ninjutsu practice!"

Mizuki didn't know how to say anything more. It was originally a ninjutsu created by Naruto, and Mizuki was just a thing to return to the original owner. Learning should not be difficult. The key is to limit the number of times the wind escape - spiral shuriken is used before Naruto learns the immortal mode.

Without the protection of the immortal mode, this technique will cause too much damage to itself.

Moreover, its disadvantages are also very obvious. Only when the control ability and perception are greatly improved under the bonus of the Sage mode can it be regarded as a throwing-type long-range attack ninjutsu. Generally, Wind Escape - Spiral Shuriken will explode as soon as it leaves the master.

With Naruto's reaction ability and physical skills, the chance of holding this S-level wind escape ninjutsu in his hand is too small, and the successive blows when dealing with Kakuto is proof.

Moreover, in the Immortal mode, long-range throwing attacks can greatly reduce the damage of this extremely destructive ninjutsu to itself.

"It's a pity that this will not be able to catch up with this mission. If the Seventh Squad also participates in the action of capturing the Three Tails, Naruto will not be able to use this advanced ninjutsu."

"It's enough now. Next, prepare a little more military ration pills, maybe it's useful."

Mizuki didn't know if Sakura and Hinata made military rations for Naruto now. Logically, Mizuki didn't know how to do it.

As for others, no one would be patient in doing this. It is natural for Naruto to slow down the speed of the spiral shuriken.

The improvement of Naruto's overall strength is obvious. The multi-shadow clone technique combined with the Dayu Rasengan is enough to cope with many challenges. If you really lose, it is enough to transform into a tailed beast. How many people in the ninja world can defeat the nine-tailed Kyuriki with four tails?

As for the money for buying soldiers and food pills, most of them would have to advance money. He has been single for many years, probably not short of this amount of money.
Chapter completed!