Konoha: Who says that hunters can't play in the ninja world?

Let's put Sasuke's problem aside for now. The curse seal that he had been longing for was obtained, but he had only tested it once. It was still unknown whether it could become the key to mastering immortal arts as Fengjian thought. Now Fengjian needed a quiet place to test it bit by bit.

The tree house has always been Fukama's choice. Even Naruto would not take the initiative to go up to the tree house to disturb them. The open space in front of the tree house is the training ground for the Twelve Little Strongmen during this period.

After saying hello to the few trained cockroaches that were lying on the ground like dogs, Fengjian returned to the tree house, sat cross-legged on the bed, and thought about how to conduct the test.

According to Kazama's understanding, the so-called curse seal is a forbidden technique developed by Orochimaru based on Jūgo's physique that automatically absorbs natural chakra, which is why the curse seal can automatically absorb natural energy. The second part is that the absorbed natural energy will be used as a catalyst to stimulate the body, thereby achieving the goal of strengthening the ninja's abilities in all aspects. Of course, this comes at a price. The more times it is used, the greater the damage to the body, and even at the cost of consuming life and potential in exchange for temporary strength.

So what Kazama needs to consider is how to use this natural energy. Although there is a switch now, it can't stop the continuous invasion of natural energy in time, but how to use the absorbed natural energy. This is a big problem. It can't be stored in the curse seal. Once the storage is full, it will enter the curse seal like Orochimaru's men.

Fengjian thought about this problem. At that time, he considered the method of establishing chakra circulation, which was inspired by the doctor's injection. The doctor injected the drug into the human body through intravenous injection, and the human blood spread the drug to the whole body through the blood vessels, thus achieving the purpose of treatment. The meridians are actually all over the body and can carry chakra. Naruto can practice fairy arts, which means that the meridians can also carry natural energy. Therefore, the meridians must play the role of channels for circulating chakra throughout the body.

Even in the early stage, Feng Jian did not require natural energy to play any role, as long as it did not cause harm to the human body. Then, through the transportation of natural energy again and again, the body gradually adapted to the natural energy filling the whole body. Then the body's adaptation to natural energy should be completed. As for how to use natural energy, that is a matter for the future.

Chakra circulation, this is what everyone actually does when they are holding a chakra exercise. Each ninja clan may have its own heritage, and the meridian operation may be different from what is taught in school, but it should be similar, just with different emphases. After all, there are only so many meridians, and filling the whole body with chakra is the most basic way to enhance the power of physical skills. It is something that all ninja school students know, and it is not advanced knowledge.

But now, Kazama needs to pay special attention to the chakra circuit, because the seal on the forearm needs to guide the natural energy into the chakra from here, and then flow back through the chakra to the lower abdomen where the chakra first appears, and then flow to the limbs with the chakra, and then flow back, which is similar to the principle of blood circulation.

What is uncertain now is whether the addition of natural energy will cause uncontrollable consequences, such as damage to chakra tendons, or physical changes.

Feng Jian couldn't help but think about it. Think about those who practiced immortal arts, and then think about the few people under Orochimaru who were cursed. Which one of them didn't have some abnormalities in his body? Feng Jian deeply felt that natural energy had a catalytic effect on the alienation of the body.

After sorting out the thoughts, I decided to try. The worst that could happen is to reduce the dose of natural energy as much as possible. After all, the environment in which people live also contains natural energy. In other words, people actually live in an environment where natural energy is floating, but the content of natural energy is very low, so the human body can hardly feel it. On this basis, Fengjian wants to increase the dose of natural energy little by little, so that the body can get used to the high concentration of natural energy.

Theoretically, it makes sense. All we can do now is try. Chakra slowly injected into the curse seal, tearing a hole in the switch, and running chakra at the same time. The high-speed flow of chakra allowed natural energy to be naturally brought in until the familiar pain appeared in the body. Fengjian quickly turned off the switch to block the entry of natural energy.

Of course, the chakra never stopped running, from the arm to the lower abdomen, then from the lower abdomen to the limbs and then back. The pain in the arm gradually spread to the whole body, making Fengjian's whole body shrouded in soreness, numbness, swelling and pain. Based on the feeling of the body, Fengjian determined that the natural energy had already flowed to the whole body, but because the concentration was too low, the pain was still within the tolerable range. Enduring the discomfort, he continued to run the chakra, over and over again, until the body adapted to the natural energy and the pain disappeared, and this training was considered complete.

"Hu" I let out a long sigh and felt a little hot all over, as if I was soaking in hot water. It felt hot but not uncomfortable.

He wiped the sweat off his forehead and felt the changes in his body, but there was no change. After thinking about it, Fengjian decided to do it again, the same steps, tearing a hole to allow the natural energy to penetrate into the tendons and veins, and circulate the whole body with chakra until the whole body felt severe pain, and then immediately closed it. Then he circulated the chakra and felt the changes in his body little by little.

The second time the pain faded away more slowly, and Fengjian had a feeling that it was almost the limit of what his body could endure. If it continued, the pain might last for a long time and affect his daily life.

After this, I felt refreshed, like I had just woken up from a nap, and my body felt slightly warm, like I had just finished a warm-up. I'm afraid it won't be something that can be seen in just one or two times, but fortunately, Fengjian had anticipated this.

If magic was so easy to master, there wouldn't be so few people who knew it.

Fengjian's method of gradual dyeing is safer, and accordingly, the time spent should be doubled.

The next step is to test the frequency and number of times the body can withstand in a day, as well as whether the body's upper limit of tolerance has been improved.

"Brother Kazama, are you doing some kind of training in the tree house? You've been in there for a long time." Naruto is always so carefree.

"Thinking about some ninjutsu stuff, how's your training going?"

"Hmph, I'm already very proficient in Wind Style. Great Breakthrough, and I can also use Wind Style. Fierce Wind Palm proficiently, but my speed is still not good enough."

"Practice more. You have more chakra, so you can practice more times than others. Don't try to remember the release steps with your brain. Use your body to experience it. This is more suitable for your talent."

"Is that right?"

"Can we practice with our shadow clones? Think about it, there are a dozen of you and one of you. The difference is not small."

"Can it be like this?" Naruto's cognition was a little broken.

"Just give it a try. It'll just waste some chakra at most. It's a burden to others, but is it a burden to you?"