Naruto? Post Bar Naruto Super!

Longdi Cave.

"Are you finally ready to start practicing Sage Mode? I thought you would have to wait a little longer."

"After all, there are always times when people are unable to spare time. But right now, I have nearly two months to practice."

Two months later, Shinji will go to the Hyuga family to attend the hundred-day banquet of Hyuga Hinata, one of the future twelve strongest men. For something that has been agreed in advance, he tries his best not to break the contract unless there are some special circumstances.

At this time, Zhen Cod suddenly heard the White Snake Sage say: "In fact, with your chakra level, there are only two possibilities for practicing Sage Mode. One, you will be declared a failure in half a day, and two, you will basically get started within seven days. Of course, you will need to learn other moves such as Injection Inorganic Reincarnation."

She didn't even list the situations in which death could occur. After all, the natural energy she would inject into the body of the cod would not be on the same order of magnitude compared to the physical and mental energy that the cod could mobilize. If this could cause death, then she would have to think about whether the Sage Mode of the Ryuchi Cave could be used by humans.

"So that's how it is. Then...please let the White Snake Immortal begin."

"...As you wish."

The White Snake Immortal circled around the cod, then showed its fangs and confidently bit down on the cod's back, and then...

"Don't move."

She found that she had not taken the bite, but she was sure that it was definitely not her problem.

"Ah? I didn't move?"

"?"

The White Snake Immortal raised her snake head again with doubt, and then she discovered an extremely strange phenomenon, "Can't you turn off the bloodline limit behind you?"

"What bloodline limit? My bloodline limit should only be the Sharingan, right?" Shincod touched the back of his hand, but he didn't notice anything unusual.

"Even I can't see your back clearly, and even when I use magic to sense it, I still can't feel anything. But if I look at your whole body, I can't see anything unusual... It's as if your back has a kind of ability that can distort all directional things in the outside world, including vision and perception spells. Just like I wanted to use my fangs to pierce your back and then inject natural energy into you, but the fangs slipped away before they got close."

"In other words, my back cannot be the target of attacks or effects? And it will automatically deflect when it is hit by an effect that does not take a target?"

"Well, this description is very appropriate. It turns out that you humans are good at using words."

"What the hell, isn't this the backless Madara? Wait - if this is the version of the backless Madara where the back cannot be selected, then can I turn my back to avoid the enemy's attack in battle? No, it still can't. The back is invincible, but it will be troublesome if the opponent cuts my waist, legs and head..."

"Besides, if that's the case, how can I practice Sage Mode?" Zhen Cod looked at the size of the White Snake Sage's fangs. He felt that if that type of fangs wanted to bite someone, they would basically have to penetrate from the chest or back.

"There are many ways. Just inject it directly from your front. Just stand still."

"Okay." Zhen Cod once again began to suppress the desire to release Susanoo and stood still. Then, the White Snake Immortal also used his fangs to pierce Zhen Cod's body.

"Even though I was pierced by such a big snake fang, it doesn't seem to be as painful as I imagined. Even if it's just a tip of the fang, the size of the puncture is still almost as big as a fist, right?" Zhen Cod found that although such a big fang pierced his chest, theoretically it should have been a very painful thing, but Zhen Cod only felt a feeling of flesh being torn apart, which was very mysterious.

After quickly injecting some natural energy, the White Snake Immortal raised his head again, "Although it is called a bite, it is not a simple bite, but an important part and ritual of practicing the Immortal Mode, so it will not cause physical harm... But why don't you react at all? Wait, where is the natural energy I injected into your body? How did it get expelled?"

The White Snake Immortal was surprised to find that the natural energy he injected into the cod's body only existed for half a minute before it was automatically excreted from the cod's body and began to slowly dissipate in the air.

"What? Expelled? Can natural energy be squeezed out?"

Before Zhen Cod could fully express his doubts, the White Snake Immortal shouted, "Hurry up and stop the natural energy that is dissipating around you!"

"Ah?" Although Zhen Cod didn't quite understand what was happening, he subconsciously began to try to intercept the so-called natural energy.

Shincod felt the natural energy for about half a minute. Although it was a bit short compared to people who practice Sage Mode normally, it was not to say that he felt nothing at all. Of course, even though his perception was not very good, Shincod still immediately used the most commonly used thing that made him feel that it could intercept natural energy - Susanoo.

Then, it was really stopped.

"This technique... is interesting. This kind of materialized chakra pulled by the special Yin-Tun Chakra has a very high natural energy compatibility effect. If you don't know why the natural energy was expelled just now, then you might as well try to use this technique to absorb natural energy, and then use it to condense the fairy chakra."

"what?"

"Senjutsu Gundam?" Makoto's mind flashed with the scene in the plot where Sasuke used Susanoo to absorb the power of the senjutsu of the curse seal and turned into Senjutsu Susanoo, and used Susanoo as a carrier to absorb the chakra of the tailed beast to make a Susanoo-shaped small ten-tail.

"It seems like there is really a way. Although I don't have the Rinnegan or the Tailed Beasts to help me absorb natural energy, even the regular Sage Mode is enough."

Then, the cod began to shrink the size of Susanoo. The half-body Susanoo, which was originally 20 meters tall, quickly shrank to about 8 meters. At this time, the cod's perception of the natural energy finally began to become clear. "So it's this thing. It feels a bit cool, but it's quite comfortable. But isn't it a little too little? How much fairy chakra can this natural energy produce?"

Shincod then began to operate Susanoo to gradually guide this ball of natural energy into a hollow chakra sword, and then injected a large amount of chakra into it.

At this time, the White Snake Immortal suddenly realized that the real cod had actually started to take action, "What are you doing?"

"Condensing the chakra of the magic technique. Didn't you say before that the magic technique of the Ryuchi Cave is to add natural energy to the existing chakra to condense the magic technique's impact? Then I should be able to add the ready-made chakra to the existing natural energy, right? By the way, after these natural energies are used up, how can I quickly condense the natural energy next time?"

Hearing this, the White Snake Immortal also fell into deep thought. She had never really thought about such a question. Normally speaking, when a person can withstand those natural energies, it means that the person has the ability to create fairy chakra. The feeling of natural energy running through the body will also make people deeply feel what natural energy is.

Therefore, any human who can cultivate the Ryuchidong Sage Mode will be a relief for her. Many things do not need to be taught at all. Even immortal arts such as the Immortal Art·White Excitation Technique and the Immortal Art·Inorganic Reincarnation can be self-taught with just a scroll.

But Zhen Cod was an exception. Just half a minute was not enough for him to deeply feel what natural energy was. What he had to do was to produce fairy chakra outside the body. This was equivalent to learning to fly before learning to run. The difficulty was self-evident.

"This is safer, but his learning progress will probably become quite slow..." The White Snake Fairy couldn't help but think of what she had said before about the estimated learning time of Zhen Cod, so she found herself in a dilemma.

If she continued like this, then according to her calculations, it would probably take Zhen Cod more than half a year to initially learn how to condense fairy chakra independently. This would be like a slap in her face, but if she continued to help, it would break the rules, which made the White Snake Immortal feel very conflicted.

"Well, this human, although not as strong as Ōtsutsuki Hagoromo, is indeed special enough. Even if he cannot reach the height of Ōtsutsuki Hagoromo, he is definitely not weaker than the people of Myōboku Mountain."

Thousands of years ago, Gamamaru of Myoboku Mountain, now known as the Great Toad Sage, once became the guide of the Six Paths Sage. This made Myoboku Mountain, Ryuchi Cave and the Wet Bone Forest all known as the three holy places, but because of the Six Paths Sage, the White Snake Sage always felt that she was being suppressed, but she could do nothing about it.

During the one thousand years, Longdi Cave welcomed countless visitors, and there were even quite a few who successfully learned the Longdi Cave Immortal Mode. However, none of them really caught the eye of the White Snake Immortal. After finally getting something special, the result was too much. Not only did the blood begin to strangely "deteriorate" half a minute after leaving the body, but even the natural energy injected into the body could only be carried for half a minute before being automatically eliminated.

Afterwards, the White Snake Sage taught the complete method of opening the Ryuchi Cave Sage Mode to Shin Cod, who then began to produce Sage Chakra using a method that seemed relatively normal at first glance.

More than ten minutes later, the Susanoo sword that carried natural energy finally began to show some changes. The originally pure blue materialized chakra sword now had some snake-scale-like patterns on it and began to spread slowly.

'This method of refining chakra is something I have never heard of before.' The White Snake Immortal discovered that this unconventional method unexpectedly had advantages. Although it was condensing chakra outside the body, the nature of Susanoo made the production of chakra not only not more difficult, but slightly simpler. This led to the advantage of controlling natural energy outside the body to produce chakra in chakra - it was not dangerous.

Since this process is absolutely safe for the real cod itself, he can even carry out repeated trial and error in a very short period of time. This is something that regular Sage Mode practitioners cannot do. If they dare to do this, they will probably die soon. However, as the real cod practiced, the White Snake Sage discovered a second problem.

'This natural energy loss efficiency seems to be a bit too high... His perception of natural energy is still too poor. Such a crude synthesis is probably difficult to produce sufficient practical benefits.'

From the perspective of the White Snake Immortal, the real cod is now equivalent to using Susanoo as a ladle to scoop fish in the fish pond. Although it can occasionally catch something, the efficiency is still too low.

"Although it seems that there is a lot of loss, I have finally produced some Senjutsu Chakra." Shincod used the Eternal Mangekyo to look at the Senjutsu Chakra that had already taken shape. After it was produced, this kind of chakra would enter the range that the Sharingan could observe like ordinary chakra, so Shincod did not need to worry about the operational problems after it was formed.

"Speaking of which, it's obviously Susanoo, why does it appear to be a change similar to a human turning on Sage Mode?"

Hearing Zhen Cod's question, the White Snake Immortal immediately explained, "Because your art is actually a materialized tangible chakra. It is reasonable for it to undergo further changes after it entangles with natural energy and condenses into fairy art chakra."

"Also, if you want to further experience what natural energy is..."

The White Snake Immortal transformed into a human form and made a seal of spiritual summoning. Then, Tanashima-hime, Tsuzu-hime and Ichikijima-hime immediately appeared in front of her.

"Immortal!"*3

"You go and inject natural energy into the materialized chakra giant of Shin Cod. You only need to inject it into it, not into his body."

Injecting natural energy into the human body is a delicate job. If the White Snake Immortal really lets these three men do it, he would not feel at ease. But if it is just to sprinkle some high-quality natural energy into Susanoo, then they can actually do it.

"As ordered!"

The three snake princesses came around Zhen Cod and turned into snake faces. Zhen Cod now roughly understood what the White Snake Immortal meant.

"Sage, are you planning to inject a large amount of high-purity natural energy like the one just now into this small space of Susanoo to increase my familiarity with natural energy?"

"That's right. But if you still make slow progress after this, then there's nothing I can do. Rules are rules. Even if I'm the one who made the rules, I can't take the initiative to break them."

Although the White Snake Immortal said so, Zhen Cod had already deeply felt the White Snake Immortal's concern for this matter, "The snake in the Longdi Cave is not bad."

"You three, please."

Susanoo opened three holes, and then Tanoshinahime, Tsuzuhime and Ichikijimahime began to inject invisible and intangible natural energy into it. Only after they stopped did Shincod seal the holes and begin to further comprehend these natural energies.

"It seems that this Sage Mode is not that difficult. Could it be that I am actually a genius?" Suddenly, Zhen Cod began to have some confidence in his talent.

However, it is a pity that the source of Zhen Cod's confidence actually comes from Madara's foundation.

……