I sell sweets in Konoha

"Yeah." Junko was satisfied with the answer.

Not everyone can have a system like her that directly gives you skills with full proficiency, and not everyone can modify existing ninjutsu like her.

Repeated practice is to learn the basics of a ninjutsu.

"Yes, just practice more and more." Junko said: "But it is different with the shadow clone. Suppose there are two people practicing the same ninjutsu at the same time."

"Both require twenty trainings, but Zhang San knows how to master the shadow clone technique."

"At this time, Zhang San is using the shadow clone technique during training."

"Divide twenty people into training at the same time."

"This completes ninjutsu training."

"That is to say." Junko continued to explain: "Twenty clones practice once at the same time, which is equivalent to others practicing twenty times. But it will actually be more than this."

"The more you divide, the speed of cultivation will increase exponentially."

"Oh oh oh!" Naruto's eyes lit up immediately.

Although he didn't know what exponential growth was, at least he understood one thing.That is, the efficiency of using shadow clones will be very high.

"So that means." Naruto said excitedly: "I can catch up with Sasuke in a short time?"

"That's the theory." Junko said again.

"Theory?" Naruto wasn't too excited when he heard Junko coming. He suddenly felt like riding a roller coaster. He was still eating hot pot and humming a song. He walked on the brand-new Kangzhuang Avenue and started to sing. Fall from height.

Smashed the floor.

"What do you mean?" Naruto gulped.

This was finally a bit hopeful, but Naruto really couldn't accept this sudden incident.

"Is this how Junko-sister practices?" Naruto asked, "Right?"

"Yes." Junko said: "It is precisely because I also use shadow clones for training, so I am also very aware of the shortcomings of this thing."

"The reason why it's theoretically improved is because you can make mistakes."

"Or you're bound to make mistakes."

"The shadow clone is not an error corrector, and there is no error correction mechanism." Junko explained: "The shadow clone will only faithfully send all information back to the main body."

"Whether this mistake is correct or wrong is determined by the ontology."

"Using the same example just now." Junzi said, "Suppose that when Zhang San uses twenty clones to practice, one of the clones makes a mistake, then this mistake will also be accumulated on the main body."

"And mistakes are the same as practice progress. They may accumulate exponentially."

"The cumulative consequences of one mistake by one clone may be equivalent to five or six mistakes."

"And if multiple clones have multiple different errors."

"Then this ninjutsu is almost the same as if you haven't mastered it yet."

"Because there are too many mistakes, bugs will definitely occur when using it, and it may not be fully used in actual combat."

"Later adjustment is also very difficult. You have to use it yourself to know where you went wrong during training."

"That's quite time-consuming."

"Also, the more clones you use, the more opportunities there are for things to go wrong. Even more things can go wrong."

"Human beings are actually very strange creatures." Junko added, "It's hard to get it right, but it's easy to get it wrong. Wrong memory can easily replace the correct memory."

"So if different mistakes occur many times, the progress of practicing with shadow clones may not be as good as others who continue to practice twenty times without shadow clones."

"That's it..." Naruto said a little depressed, "What should we do?"

"Someone has to keep an eye on it." Junko practiced using shadow clones, but the actual process was not as easy as in the fan fiction.This is indeed a very good cheater.

It can make a qualitative leap in strength in a short period of time.

But similarly, if you make mistakes during cultivation and are not aware of it, it will inevitably affect your cultivation progress.

It even makes the results of training completely inferior to those of practicing without shadow clones.

"With this cultivation fruit, I naturally know how to avoid this from happening to the greatest extent." Junko said, "It's just tiring and requires people to keep an eye on it."

"If there is an error in one of the shadow clones, it must be terminated quickly and that shadow clone disbanded in advance."

"I will help you with this."

"And Kakashi."

"But apart from these, there is an obvious problem here." Junko then explained to Naruto: "This is the dangerous place."

"The shadow clone will not only accumulate experience during practice, but also accumulate fatigue during practice."

"Let's still take Zhang San as an example." Junko explained: "Suppose Zhang San's mental value is 10. One day of practice will consume 8 mental values, and a night's rest can replenish it."

"Of course, this value is not certain for a person. That is, Zhang San's mental value consumption just now is the consumption during normal practice."

"Similarly, Zhang San's mental value is also a mental value on the surface. In fact, the hidden mental value of the human body is more than this."

"Assuming that Zhang San's hidden mental value is 50, and counting his actual mental value, there is no problem if he consumes it in one day."

"But it's different after using the shadow clone. The shadow clone will also consume spiritual points."

"But the difference is that the shadow clone will not directly consume the main body. Instead, after consuming itself, it will be directly deducted from the main body when the clone is released."

"So based on the above, assuming that Zhang San uses 20 clones to practice, the mental value consumed in one practice is twenty times that of ordinary practice."

"In other words, the cost of using twenty clones to practice for one day is 160."

"But Zhang San's mental value is only 60, which is all his energy."

"He can't spend so much mental energy."

"The result..." Junko looked at Naruto and asked, "What do you think will happen?"

"This..." Naruto was confused and said completely unintelligible: "I don't know..."

"You will die!" Junko said seriously: "Actually, we cannot consume all our energy every day. The body's biological instinct will urge us to rest when we are close to the maximum consumption."

"To replenish lost energy."

"But we can actually consume more, and even overconsumption of some of it won't pose a threat to life."

"But the problem is that we don't feel tired when practicing with shadow clones. Even when the amount of practice is not as good as the fatigue when practicing as a single individual."

"But as long as the clone is released, fatigue will accumulate. At this time, your body's load will be instantly reached or even exceeded."

"And then you die."

"It's that simple." Junko spread her hands and said, "You are exhausted, literally. Because a single shadow clone will not feel fatigue, but many of them will be relieved at the same time."

"A huge amount of information is pouring in, and fatigue is all accumulated on the same individual. At this time, both the amount of information received and the degree of fatigue are far more than several times the actual load."

"It's normal for people who are in poor health...or even strong people to be exhausted."

"Then..." Naruto swallowed and said, "I..."

"You don't have to worry about this." Junko shook her finger and said, "Because you are different from ordinary people. You have the Nine-Tails sealed in your body. He brings you a huge advantage."

"It means plenty of energy and super strong recovery ability, so the threshold that can tire you to death will be very high!"

"To a level that is unimaginable to others."

"But you have another problem." Junko said again: "It's also because you are a Jinchuuriki."

"You might go berserk."

Chapter 80 Let’s start training

"Naruto, the first step in the training you want to do is control."

“Control is everything.”

Junko taught her very seriously: "The problem you have now is that you have a lot of power and no corresponding control. Although great power can work miracles, if you can control it to the smallest detail, your power will have a qualitative improvement." leap."

'If we follow the plot...' Junko looked at Naruto's cautious look.

'This time we should develop Wind Release and Spiral Shuriken, right? '

Junko still knew about this plot. The ninjutsu of Wind Release and Rasenshuriken was Naruto's first attempt to complete the ninjutsu of Rasengan.

Rasengan is a basic ninjutsu, and there are many advanced versions.

but...

"Let's start with the most common Rasengan." Junko said with a little more vulgar taste in her heart: "You know how to practice Rasengan."

"Yeah." Naruto nodded immediately and said, "The training method of Rasengan, the first step is rotation, the second step is power, and the third step is control."

"That's what the lustful immortal taught me back then."

"Yes." Junko praised, "You remember it quite clearly."

"Ahahaha~" Naruto touched his head and said with a silly smile, "This is the best ninjutsu I have ever used."

"Other ninjutsu are too complicated and I can't learn them well."

"You are neither good nor wrong at this point." Junko said, either as a compliment or not as a boast: "Just from your own words, you are very honest. You know your own advantages. Weaknesses, of course, what makes you smart is that you know your strengths and weaknesses, and you also know how to use your strengths and avoid weaknesses to find some cleverness."

"But this time, all I need you to do is face your shortcomings!"

"Change the layout of the Rasengan slightly." Junko said: "The first step is control, the second step is rotation, and the third step is power!"

"Huh?!" Naruto scratched his head. Although it made Naruto feel a little guilty to face his own shortcomings, what was the use of changing these three steps?

"Didn't I already learn the Rasengan?" Naruto asked confused.

"I'm ready for you." Junko opened her hand and a Rasengan appeared in Junko's hand.

"The first step is control."

"Oh..." Naruto looked at Junko's Rasengan carefully, and intuitively he felt that there was no difference between the Rasengan in Junko's hand and the Rasengan in his own hand.

But Naruto always felt that there must be some mystery to this Rasengan.

He looked carefully for a long time and still couldn't see any changes.

"This..." Naruto asked a little confused: "Sister Junko, this...hasn't changed at all?!"

"Yeah." Junko did not answer Naruto's question. He continued: "The second step is to rotate."

This time the entire Rasengan changed a little, spinning!

The rotation speeds up!

The rotation speed of the Rasengan in Junko's hand was obviously faster than the rotation speed of the balls that Naruto rolled himself, and the speed was still increasing.

"The third step." Junko said with a slightly raised corner of her mouth: "Power."

The next second, the normally sized meatball suddenly began to expand, from a small rubber ball to a large basketball. However, the meatball was still expanding rapidly before playing with it.

And it's getting bigger.

The rapidly rotating spiral is getting bigger and bigger, and the noise is getting louder and louder!

The wind that was originally just blowing dead grass and fallen leaves began to be able to hang up the ground, and the Rasengan was so huge that it was like a huge stone that obscured the sky and the sun, and it seemed that the edge could not be seen at a glance.

"This... is so big!" Naruto felt his scalp numb.

He knows that the Rasengan ninjutsu is related to the output of chakra!The more chakra input, the larger the Rasengan can be, and the larger the Rasengan is, it also brings a new problem.

It means the stronger the control required.

The Otama Rasengan and Naruto himself needed a shadow clone to maintain it.And such a big Rasengan...

Naruto didn't think he could maintain it anyway.

And it's not over yet.

Suddenly, in just an instant, the entire Rasengan rapidly compressed towards the center!In just two or three seconds, the Rasengan turned into a ball the size of a table tennis ball.

But the big and small meatballs emit light that blinds the dog's eyes.

"Naruto~" Junko said with a big grin: "I just made a few changes, and it turned out like this."

"You should know the power, right?"

"One ninja village after another!"