Kirito added the reinforcement point to the virtuous attribute again, and the number of the suffix suddenly changed from 4 to 5.

At the same time, his brain was once again in sharp pain.

This time the pain was much worse than the last time, in just a dozen seconds, his whole body was soaked, his face became extremely pale, and he almost fainted, and a lot of blood flowed from his nose.

But after the pain, there is an incomparably sweet harvest.

He concentrates and engages the chakra in his body.

Soon, a chakra with a dark color and a cold aura appeared on his right hand.

This is the yin attribute chakra.

"I didn't expect that there would be such a harvest after the improvement of the virtuous attribute this time, and the cultivation of the yin attribute chakra nature came out naturally."

Kirito looked at the Yin attribute chakra in his hand, and a smile of surprise appeared on his face.

The Yin Chakra, a chakra that creates tangible things out of the invisible, is essentially a spiritual force.

His intelligence was improved, apparently strengthening his mental strength in disguise.

Then, he removed the Yin Attribute Chakra, and then closed his eyes and carefully experienced the benefits of his intelligence after being improved again.

After a while, he reopened his eyes and slapped him on the ground.

In the next moment, a large number of chakra sealing techniques spread rapidly on the ground, and then a complex sealing technique was formed in just a few seconds.

Seal: Triple Light Array!

Succeed.

This sealing technique is an upgraded version of the sealing technique formed by three superimpositions on the basis of a series of light arrays, and its binding ability is far more powerful than that of a series of light arrays, enough to bind the upper ninja for a few seconds, and the range is larger than that of a series of light arrays, which can bind several enemies at the same time.

However, the triple array is much more complex than the first series of arrays.

For example, a series of light arrays is only a one-time equation, then a triple light array is a cubic equation, and the difficulty is not an order of magnitude at all.

Before that, although Kirito could also smoothly arrange this sealing technique, it would take at least thirty seconds, and such a sealing technique would obviously be difficult to play a big role in a life-and-death battle measured in seconds, and could only be used as a trap to arrange in advance.

But now, Kiritto only took three seconds to successfully arrange it this time, and it has the possibility of being used in actual combat.

After his intelligence was improved again, Kirito's mental arithmetic ability was once again amazingly improved.

If Kirito's mental arithmetic ability was only a single-core processor before, now it has been upgraded to a dual-core processor, and the performance has been greatly improved.

Because of this, Kirito's chakra control ability has also been further improved.

He quickly completed the seal on the spot and unleashed the Thunder Ball.

All of a sudden, a large number of electric balls appeared, much more than when he had just fought against the rope tree.

This is a testament to the further improvement of Chakra's manipulation, as he can now make more electric balls with the same amount of Chakra, as a result of his increased Chakra Manipulation and Chakra's efficiency.

Then, he stretched out his right hand and began to mobilize the chakra.

A large number of chakratas swirled around his right hand, eventually forming a thumb-sized spiral pill.

Although this spiral pill is small, it is obviously very powerful, and as soon as it is completed, it stirs up the surrounding air current, forming a small whirlwind around Kirito.

The Spiral Pill is the ultimate in chakra morphological changes, and it is a very good way to exercise chakra control.

Therefore, in order to improve his chakra control power, Kirito has been cultivating the Spiral Pill.

With his excellent chakra control, of course, he has long been able to successfully cultivate this A-level ninjutsu.

However, as an A-level ninjutsu, the amount of chakra consumed by the Spiral Pill is very large, and at least the amount of chakra at the upper ninja level is required to be released normally.

Kirito was previously unable to successfully release the Spiral Pill because of the lack of chakra.

Now that the chakra control ability has been further improved, the efficiency of the use of chakra has been greatly improved, and the unnecessary chakra loss caused by the release of the spiral pill has been greatly reduced, and he has finally succeeded in releasing the spiral pill.

Although the Spiral Pill in Kirito's hand at this time was pitifully small, there was no doubt that he had successfully cultivated the Spiral Pill.

"I successfully used the Spiral Pill with a normal lower ninja level chakra, I don't know how many chakra control power I can rank in the entire Konoha now, it shouldn't be low, hehe."

Kirito looked at the small chakra ball in his hand and smiled slightly, feeling a little proud in his heart.

With such excellent chakra control now, learning all kinds of ninjutsu in the future will get twice the result with half the effort, and when he releases ninjutsu, he can greatly reduce the consumption of chakra, which increases his chakra amount in disguise.

Kirito didn't take too long to be complacent because he had successfully cultivated the Spiral Pill, he quickly removed the Miniature Spiral Pill and began to refine the chakra with his eyes closed.

After a few minutes, he reopened his eyes and took out a psychic card from his body.

Spiritism: The art of release.

In the next second, an iron rod with a large amount of iron wire wrapped around it appeared on the ground.

"Give it a try, I think it will work this time."

Kirito looked at the strange iron rod on the ground with an expectant expression on his face, and then picked up the iron rod and released a large number of thunder attribute chakras.

Suddenly, the thunder attribute Chakra was controlled by Kirito to cling to the iron rod, and a large amount of iron wire flowed along it.

In the process, the lightning chakra is converted into a high-voltage current.

Blinding electric sparks suddenly burst on the iron rod.

After a while, some black iron sand began to emerge from the ground, suspended in midair.

"Looks like it worked."

Kirito watched the black iron sand continue to emerge from the ground, and his heart was overjoyed.

Using the principle of electromagnetism, and then simulating the process of electromagnetism with the help of thunder attribute chakra, and then controlling the magnetic field through powerful mental arithmetic ability, and finally achieving the purpose of controlling the iron sand in the earth.

This is the magnetic escape ninjutsu that Kirito is currently trying to develop.

Ever since he had successfully cultivated the Thunder Attribute Chakra, he had begun to study this Magnetic Escape Ninjutsu.

To this end, he has been studying electricity diligently.

Unfortunately, he was never able to succeed because the magnetic field formed by electromagnetism was too difficult to control.

Of course, the normal magnetic escape is that the human body gives birth to a special chakra with magnetic force, and the iron sand can be easily manipulated by attaching this chakra to the iron sand.

However, Kirito relies on the magnetic force formed by electro-generated magnetism, and the process is much more complex, requiring not only excellent chakra control, but also strong mental arithmetic ability.

This was the first time Kirito felt that he could manipulate the magnetic force formed by electromagnetism without any pressure.

Next, Kirito began to try to manipulate some iron sand to make some simple shapes, shaping them into kunai, shuriken, walls, and other shapes.

But as soon as he completed a few simple shapings, he felt weak and dizzy.

At this time, the high-voltage current on the iron rod also disappears.

There was not much chakra left in his body.

"Although I have succeeded in manipulating the magnetic field formed by electrogenesis by relying on my greatly improved mental arithmetic ability, the current amount of chakra is far from enough to successfully complete this ninjutsu."

Kirito endured the discomfort caused by Chakra's excessive consumption, and sighed helplessly.

But his eyes were shining with excitement at the moment.

The most difficult first step has passed, and the next step is just to keep improving the level of application.