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

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

For Naruto Uzumaki, the days weren't so wonderful.

"Chakra nature change, why is it so difficult?"

The feeling of having nowhere to do it is really uncomfortable, even if I have consulted the ape Fei Asma, who is proficient in wind escape, and found a way, but it is still far from mastering.

Chakra nature change is a practice with no possibility of tricks, and it is quite boring.

Kakashi Hachiki naturally asked Naruto Uzumaki to use a shadow clone to speed up his cultivation.

At the same time, Kakashi also asked Mizuki for help, wanting to help Sakura with his condensation technique or other ways to alleviate the mental impact caused by Naruto's practice, but Mizuki refused.

"It's chaotic to care, Kakashi, have you forgotten that the technique of multiple shadow clones is a completely forbidden technique in itself, and you can think that it is already dangerous to use it to accelerate the cultivation of chakra's nature change, and if you increase Naruto's burden again, this risk will increase exponentially. ”

"Is it that serious?"

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

"It's good to give feedback on experiences and memories when the shadow clone disappears, but the fatigue caused by mental impact will also accumulate, and when it is severe enough to a certain extent, the ninja will lose mobility or faint. This belongs to the instinct of human self-preservation, coma is a physiological phenomenon that regulates its own functions, and if you blindly escape, it will have bad consequences!"

"The consequences of this kind can be mild or severe, if the impact is not big, of course there is no problem, but Naruto is obviously not among them!"

Sakura's physical fitness is far inferior to Naruto's, but the two have one thing in common, and that is that the number of shadow clones is not limited by chakra, which is a good thing for practice. The contemplation technique I taught Sakura was to make up for her mental and physical deficiencies, so that she could take full advantage of the large amount of chakra. But I'm still strictly limiting the number of shadow clones, and the reason for this, as you know, is that Sakura's physical strength is far inferior to Naruto's. ”

"Naruto's physical strength is very good, if he uses all his strength, he can separate hundreds of shadow clones, and the consequences are also very serious, if he is not protected, it is likely to cause permanent mental damage, which is a short-term move that outweighs the loss!"

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

"To give an inappropriate example, Sakura can run ten kilometers, Naruto can run a hundred kilometers, the Spiritual Secret Technique can multiply Sakura's running distance tenfold to one hundred kilometers, and put ten times more on Naruto than a thousand kilometers, which is also beyond the limit of one's own bearing, what do you think is the difference between the damage caused by running an extra 90 kilometers and the damage caused by running an extra 900 kilometers?"

"Oh, I get it when you say that!"

Kakashi Hachiki suddenly realized,

"The physical fitness is different, if it were Naruto, he would definitely do his best to practice, the more shadow clones there are, the greater the instantaneous damage caused, and if this large amount of damage is stacked in a short period of time, it will have serious consequences. ”

"That's pretty much what it means, if you want to use Mind Condensation, you'll have to let Naruto control the number of shadow clones, lengthening the time period for dealing damage. Rather than that, it would be better to let Naruto do it, and when he collapsed naturally, he would stop, and then recover on his own, which might be faster. Naruto's physical fitness and strong will are equivalent to bringing a buffer against physical and mental fatigue, and you don't need to interfere anymore. If you change it at will, the gains outweigh the losses!"

And there is another point, with Naruto's chakra, the Divine Condensation Technique is definitely not enough, and a complete Soul Gathering Circle must be used.

When Naruto was practicing, the moment when the shadow clone disappeared in an instant, causing mental fluctuations, and then interfering with the sealing technique, who knows if it would affect the wave wind water gate in his body and the chakra of Uzumaki Kushina?

Mizuki has endured until now and has not attacked the Nine-Tails in Naruto Uzumaki's body, just because he doesn't want to affect those chakra marks in Naruto's body.

"Then that's all there is to it?"

Kakashi spared his head, seemingly dissatisfied with Naruto's progress.

"An S-class ninjutsu that combines form changes and nature changes, some ninjas can't learn it in their lifetime, and you still pick and choose!"

Mizuki pouted,

"Moreover, it is quite dangerous to hold the powerful wind attribute chakra in your hand. If used incorrectly, it may become crippled. ”

"Well, I have expected it, ninjutsu cultivation must be more or less risky!"

Mizuki didn't want to say anything more, it was originally a ninjutsu created by Naruto, and Mizuki was just returning to its original owner, it shouldn't be difficult to learn, the key was to limit the number of times Feng Dun - Spiral Shuriken was used before Naruto learned the immortal mode.

Without the protection of Immortal Mode, this technique will do too much damage to itself.

And its shortcomings are also obvious, only under the bonus of the immortal mode, the control ability and perception have been greatly improved, and it can be used as a throwing long-range attack ninjutsu, under normal circumstances, the wind escape - spiral shuriken will explode as soon as it leaves the master.

With Naruto's reflexes and physical skill level, the chance of being able to hit an enemy with this S-level Wind Escape Ninjutsu in his hand is too small, as evidenced by the successive misses when dealing with Kakuto.

Moreover, in the case of Immortal Mode, the long-range throwing attack can also greatly reduce the damage of this extremely destructive ninjutsu to itself.

"It's a pity, in this way, I won't be able to catch up with this mission, if the seventh class also participates in the operation to capture the three tails, Naruto will not be able to use this advanced ninjutsu. ”

"That's enough for now. Next, it is enough to prepare a little more food pills, maybe you can use them. ”

Mizuki doesn't know if Sakura and Hinata have made Bing Grain Pills for Naruto now, and it stands to reason that Mizuki can't, and most of them don't know how to do it.

As for the others, no one would have the patience to do such a thing, and Naruto's cultivation of Wind Escape - the speed of the spiral shuriken slowed down as a matter of course.

The improvement of Naruto's comprehensive strength is obvious, the technique of multiple shadow clones combined with the Great Jade Spiral Pill is enough to deal with many challenges, it is really invincible, it is enough to use the tailed beast, and how many people in the ninja world can defeat the nine-tailed human pillar force with four tails?

As for the money to buy military food pills, most of them will be advanced by Kakashi, and he should not lack this money after many years of birth.

However, Naruto hasn't done any tasks for three years, so he shouldn't have much savings, and it is estimated that he won't be able to pay it back for many years.