After returning to his house, Kazuki closed the door and couldn't wait to extract the treasure chest, looking forward to the items that would be opened this time.
"Open the treasure chest?" the system said.
"Yes!!" Kazuki said without hesitation, his expression firm.
Poof, a cloud of white smoke appeared in front of him, and a bronze treasure chest appeared.
Kazuki slowly opened the treasure chest, his hands trembling slightly, hoping to see a good thing.
After the treasure chest was completely opened, only a white card was quietly floating there.
Kazuki picked up the card, and a message was transmitted to his mind at the same time.
"Skill: Tornado Comprehension Card, the user can use this to create a dragon-shaped airflow by waving their arms to protect the body, forming an absolute defense, learn it?"
"Yes!" Kazuki replied.
After the words fell, the skill card turned into a white light and merged into his body. All the mysteries of the Tornado were integrated into his mind.
Attribute Panel:
"Host: Kazuki!
Abilities: Conqueror's Haki Lv1, Observation Haki Lv1, Armament Haki Lv1, Tornado Secret Technique Lv1, upgrading to the next level requires 100 experience points.
Experience Points: 75/100."
At this time, there was an additional Tornado Secret Technique in the ability column.
Kazuki understood the source of this skill. It was a defensive move created by Zoro in the One Piece world.
It was mainly used to deal with special situations where there were no sword in hand.
You must know that if a swordsman doesn't have a sword in his hand, then his strength will be greatly reduced.
The Tornado is a special technique of generating force by waving the arms, creating an airflow to defend the body.
Simple and practical!
Of course, the value of this treasure chest was still far from the Three-Color Haki, but it was better than nothing.
After a simple wash, Kazuki changed into a clean set of clothes and sat cross-legged on the bed to start meditating.
Meditation was a training method taught at the Ninja Academy, which could concentrate a person's mental attention and enter a state of selflessness.
And Chakra was extracted under the combination of mental meditation and physical exercise.
The amount of Chakra was also a standard for judging the strength of a ninja!
Among Jonin, the amount of Chakra determined the strength of the two.
For example, Minato Namikaze, without a bloodline limit and without a background, but his amount of Chakra was very large, even comparable to a tailed beast.
There was also the Raikage of Cloud Hidden Village, who could be called a humanoid tailed beast!
This was related to the cultivation method and the utilization rate of the body's development!
In the final analysis, the human body needed to be exercised, exercise to stimulate potential, activate every cell in the body, and let every cell produce energy!
Whether it was because of awakening the Three-Color Haki, Kazuki clearly felt that his efficiency in extracting Chakra had improved a lot compared to before.
Through Observation Haki, he could even feel the flow of Chakra in his blood vessels and meridians, flowing along his limbs and bones to his entire body and mind. It was an incredibly wonderful feeling.
Before dawn, Kazuki woke up and walked to the open space at the door to start training.
He hammered against a tree stake with a circumference of a hug, constantly hammering hundreds of times, without stopping for a moment, and his whole body was covered in sweat.
"Armament Haki!"
Silently chanting, a layer of black suddenly covered the surface of Kazuki's fist, with the wrist as the dividing point, the fist completely turned black, like a block of iron.
With the blessing of Armament Haki, at this moment, Kazuki felt his strength double!
"Ha!" With a loud shout, a punch carrying Armament Haki directly pierced through the tree stake with a circumference of a hug!
"Crack!"
A hole appeared in the middle of the tree stake, and Kazuki looked at his hand in disbelief. Was this his power just now?
I'm afraid that even a Genin couldn't do this with just physical strength!
Armament Haki automatically disappeared. This wasn't controlled by Kazuki, but it could only appear for such a short time.
Kazuki activated Armament Haki again, and a layer of black covered his fist again, automatically disappearing after about twenty seconds.
During this process, his chakra also decreased a little, but it was nothing compared to the consumption of releasing a C-rank ninjutsu.
Through Armament Haki training, activating Armament Haki would consume chakra, but the duration of Armament Haki had nothing to do with the amount of chakra, but with the level.
Currently, Armament Haki could last for about thirty seconds before disappearing.
Activating it again would require chakra consumption. Because the amount of chakra consumed was less than releasing ninjutsu, this was very beneficial to Kazuki to some extent, and it was also his advantage.
Kazuki was emotionally excited, and after experimenting with Armament Haki a few more times, he practiced the Tornado Secret!
He squatted in a horse stance, waving his arms gently in the air, posing a mysterious trajectory.
If you carefully observed this trajectory, you would find that the shape of the trajectory was actually a dragon shape.
The speed of his arms swinging became faster and faster, and you could faintly hear the sound of a dragon roaring!
Visibly to the naked eye, with Kazuki as the center, streams of air danced around him, and grass leaves flew.
When the speed reached its extreme, Kazuki seemed to be standing in the center of a tornado, and a phantom dragon faintly appeared in the air, coiling around Kazuki.
However, this was just a defensive move and did not have any attack power!
After practicing for a while, Kazuki stopped to rest for a while.
"Experience points are full, you can upgrade!" A system prompt came from his mind.
Opening the system panel, the experience points were now 100/100. Basically, experience points were increasing all the time, the only difference was the speed.
Currently, the Three-Color Haki and the Tornado Secret were all Lv1, but the experience could only improve one ability.
After weighing the pros and cons for a while, Kazuki decided to increase his experience value to Observation Haki.
According to his current situation, if he upgraded Conqueror's Haki, with the current strength of Conqueror's Haki, it was absolutely impossible to stun people.
Upgrading Armament Haki would increase some defense and attack power, but the effect would not be great.
However, Observation Haki was different, which could be understood as a potential investment.
First of all, the effect of Observation Haki was the power to strongly sense the surrounding, and it could sense enemies outside the line of sight or further predict the opponent's movements.
Advanced Observation Haki could even listen to the voices of all things, predict the future, and read minds.
Kazuki felt that upgrading Observation Haki could improve his perception, mainly to deal with unknown dangers. After all, there were too many potential threats in the ninja world.
It was useless to have strength alone. If you were ambushed, then it would be disaster!
For example, Madara Uchiha, who was against the heavens and the earth in the later stage, wasn't his heart pierced by Black Zetsu?
If he could sense it in advance, the ending of the ninja world would probably change.
With this in mind, Kazuki upgraded Observation Haki, silently saying in his heart: "System, upgrade Observation Haki."
"Ding!"
"Upgrade successful!"
Kazuki sat cross-legged on the ground. Observation Haki was upgraded from Lv1 to Lv2, and a mysterious and wonderful feeling filled his heart.
How to describe it? It was that the entire world was clearer in his senses.
When he got closer, he could hear the sounds of various insects, birds, and even the wind!
"Rustle!"
"Who!"
Kazuki suddenly opened his eyes, and with a slap of his hand, a kunai instantly appeared in his hand.
His eyes were fixed on a large tree not far away. Although it was not yet dawn, and there was a large tree to cover it, he was certain that someone was there!
This was Observation Haki, a pair of invisible eyes that perceived the world!
"Kazuki-kun, it's me!"
After two or three breaths, a timid voice came from behind the tree, followed by a small and pitiful figure?
"Kushina?" Seeing the person, Kazuki's expression changed, and he unobtrusively put away the kunai in his hand.
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