Konoha I am Uchiha

Constructing sealing runes with chakra is much more difficult than drawing them with ink.

Not only because the manipulation of chakra is more difficult than simply controlling the movement of fingers, but also because the sealing runes composed of chakra runes are more effective.

The sealing techniques composed of chakra runes not only have the function of sealing, but some techniques also have powerful attack power.

For example, the Vajra blockade of the Uzumaki clan.

Its sealing runes are densely connected and condensed into chakra chains, which can not only bind and whip, but also form a barrier space, and its chakra-suppressing effect can even suppress tailed beasts!

Once in Sunagakure Village, the monk who tried to assassinate Gaara had a sealing chain extending from his body, which was also made of chakra runes and was quite powerful.

Hiirago suspected that it was a sealing technique that relied on magnetic escape, but there was currently no way to verify it.

In fact, when you first practice sealing techniques, you should start with simple small seals - such as the drawing of seal scrolls, and gradually transition to complex advanced sealing techniques. But whether intentionally or unintentionally, the third generation only gave Hiiragi the basic sealing rune scroll, but not the basic sealing techniques for practicing.

Therefore, Hiirago could only skip the process of drawing the seal with ink and directly construct the Yin seal in the body.

There are benefits and risks. The risk is that every failure will cause some backlash damage to your body, especially since the construction site is extremely close to the brain. Hiirago estimated that with his current physical condition, he would fail at most three times a day.

This is still considering that he knows medical ninjutsu, and under normal circumstances, medical ninjas can treat themselves much better than others.

The benefits are of course obvious. The first time I practiced such an advanced sealing technique, Hiiragi would spend much less energy learning those simple seals in the future.

The amount of chakra a person's forehead can hold grows with the growth of a ninja's body. This is also why the amount of chakra that can be sealed by the Yin Seal technique changes over time.

Generally, ninjas who practice Yin Seal will open up and isolate all suitable spaces. No one will think that they have too much chakra.

Hiirago opened the Sharingan. Although he can't last long, the increase in perception brought by Sharingan is still helpful for this delicate life.

Recently, Shisui also gave him a small prescription, which saved him from the loss of chakra when using his eyes and extended the time for him to activate the Sharingan.

It didn't take long for Hiirago to open up and isolate the sealed space. After all, it was not a difficult task.

Exhaling, he intercepted a small amount of chakra and used his mental power to control it to change.

The form of chakra slowly changes.

Although the change of chakra form in Ninjutsu relies on seals, this does not mean that it must rely on seals to change the form of chakra.

Only when ninjas become powerful and master ninjutsu can they begin to understand the inner connection between chakra and ninjutsu. And this will be the starting point for the second rapid improvement in the strength of the ninjas.

Snapped!

Hiiragi's head hurt, and he couldn't help but bend down and hug his head.

It seems that after staying up late for too long in the previous life, I had throbbing nerve pain in the back of my head.

It took a lot of effort for him to hold back from screaming. Chakra chaos in his body backfired, causing pain to damage some nerve cells, making him unable to move for a moment.

The pain finally disappeared, and Hiiragi collapsed on the bed dripping with sweat.

He stretched out his hands and covered his forehead, and glowing green light came out from his palms - Palm Immortal Technique!

As the result of several years of hard work, Hiirago finally mastered the Palm Immortal Technique, which is only known by advanced medical ninjas. Although the effect is poor and the duration is not long, the effect on himself is still good.

For a place like the brain where nerve cells are densely packed, apart from craniotomy, only palm sage has a good therapeutic effect.

It should be that the chakra measurement was too little. At this time, Hiiragi calmly thought that each different rune consumes a different amount of chakra, which is explained in detail in the basic scroll.

It is my first time to intercept, so it is normal for me to be inexperienced. He still remembered that at the end of the construction, one corner of the rune was slightly chipped, causing the entire rune to become unstable.

Take more when you intercept next time. Even if you waste some chakra, it will be better than having the backlash like this.

After his body calmed down, Hiiragi regained his composure.

After spending a whole night, Hiiragi finally constructed three runes. The perception ability boosted by the Sharingan helped him a lot. Although the chakra in his body was exhausted, compared with these, he finally had hope of success.

The total number of Yin seal runes is close to a thousand, but after gaining experience, Hiiragi is confident that it can be completed within three months.

……

Time was spent in Hiirago going to school like this, practicing with Shisui, working as an assistant to Dr. Asama, and constructing the Yin Seal sealing technique. Seeing that the first grade is coming to an end, Hiiragi is about to enter the second grade.

The Ninja School adopts a three-semester system, and after the third semester, students are promoted to the next grade. It is now March of Konoha's 51st year, and Hiiragi is on spring break.

"Itachi-kun, Hiiragi-kun, see you next semester." After saying goodbye to the polite Hyuga brothers, Hiirago and Itachi were walking home.

Since telling Itachi about Uchiha one after another, Hiiragi found that Itachi had also changed. At least he is not as aloof as before in the class, and he is no longer alienated from civilian ninjas, which makes some girls in the class feel flattered, and his attitude towards the three little followers is also much better.

Although Hinata and Uchiha are on the same level, Hiiragi, Itachi and the two Hyuga family members are very restrained and get along fairly well with each other. Regarding the ninjas from other families, Hiirago discovered that Itachi was trying to integrate into their circle for some reason.

But the effect is not very good.

Due to Hiirago's intervention, Itachi was not discovered the secret of the shadow clone, so he was promoted to the second grade with him. Hiirago had no intention of forcing Itachi to prevent him from graduating. He once told Itachi that after entering the second grade, he could graduate at any time if he wanted to.

But Itachi had his own ideas, and Hiiragi didn't interfere.

"Hiiragi, are you going home now?"

"Well! It's finally a holiday... Waking up early is really mankind's worst enemy!"

"By the way, Brother Zhisui should have gone to the clan meeting too, right?"

"Yeah... I don't know when I will come back, and I don't even know when I will start cooking..."

"Then don't bother me, I'm going home too. Hiiragi, let's practice together tomorrow!"

"Well, good!"

"goodbye!"

"See you tomorrow!"

……

Nanga Shrine, underground.

Pairs of scarlet sharingan eyes flashed in the underground space. This was the scene of the traditional Uchiha clan meeting. Only clan members with sharingan eyes turned on were eligible to attend.

And those sitting in front, in addition to the clan leader and elders, are undoubtedly the masters of the three magatama sharingan in the clan.

But today, a young man's position is actually higher than the elders, second only to the clan leader Uchiha Fugaku.

"Shisui-kun, I hope you can explain the ANBU matter."

An old man spoke with a smile, his tone was kind and his expression was calm, but the words he spat out were not so friendly.

Shisui opened his eyes and scanned the surroundings with a pair of Mangekyō Sharingan. No one dared to look at him, but the faintly coercive atmosphere became even stronger.