I, Hikaru Uchiha, join the chat group

This is not the first time that Uchiha Hikari has requested to learn the "Yin Seal".

The last time was at the end of last year, when Tsunade returned to the village and beat Danzo violently.

It's just that at that time, Tsunade was still in a state of indifference to everything around her, and Uchiha Hikaru had just begun to explore the ability of the "Eight Thousand Spears" to rewrite the will of others. It was not easy to use Tsunade as a guinea pig without being sure. , so the plan was temporarily shelved.

Until now——

"...If you really want to learn 'Yin Seal', I can teach you."

Tsunade was silent for a moment, then took a deep breath and spoke in a low voice: "But I have a request, that is, no matter what happens, you must not use this ninjutsu against the ninjas of Konoha. Especially Shizune."

"no problem."

Uchiha Hikaru agreed wholeheartedly.

The "Yin Seal" is just the icing on the cake for her.

"Why does it feel like...it's not difficult at all? Is it so much easier than you thought?"

With her current strength, she should be able to have an equal dialogue with the White Snake Immortal...

As a price for the improved effect, the difficulty of practicing the improved version of "Yin Seal" has also increased from the original level.

In the original plot, even Shizune, who had followed Tsunade for many years, was unable to learn this move due to her qualifications. As a mortal genius, Haruno Sakura also spent nearly three years mastering it.

but.

As the name suggests, the essence of "Yin Seal" is a sealing technique, and it is an extremely rare medical sealing technique.

Just when Uchiha Hikari wondered if he had made a mistake and wanted to ask again.

……

Uchiha Hikaru went further: "In addition to the 'Yin Seal', I am also very interested in several other ninjutsu... Do you consider selling the 'Weird Power'? There are also 'Hundred Heroes' Technique' and the Contract Scroll of the Shiggou Forest. It doesn’t matter if the price is a little higher, right?”

Tsunade rested in bed for a few days before gradually recovering from the mental stimulation.

I made this request just to get some psychological comfort.

After some haggling.

After Tsunade's development and improvement, the "Yin Seal" she mastered was able to construct a special magic circuit in the body by continuously outputting trace amounts of chakra, thereby continuously repairing and regulating various body functions, achieving The effect of eternal youth.

"What would happen if Eriyi or Esdeath sign a contract with Shigulin?"

If it is the most primitive magic that only uses natural energy, even humans from other worlds should be able to learn and use it, right?

If we were to fight Konoha's ninjas...

Its basic principle is to create a "reservoir" in the body through subtle adjustments to the body's meridians, and pour the chakra that is usually refined into it little by little and store it. Wait until the critical moment, and then use specific techniques to release it, and then you can release a large amount of chakra and gain powerful combat capabilities beyond normal conditions.

In fact, even if Tsunade was willing, Uchiha Hikaru might not be able to sign it.

When listening to Tsunade's explanation, she already felt that this technique was very difficult.

"what?"

For a moment, Uchiha Hikaru even felt as if he had returned to the university classroom in his previous life, listening to Teacher Tsunade's advanced mathematics class.

Moreover, this ninjutsu itself is not offensive, it is used to store chakra in case of emergency.

And for this, Tsunade actually knew it well.

——If the opponent is Metkai with all eight doors open, he can indeed pose a fatal threat to her, but at that time, let alone the "Yin Seal", even the "Fire Thunder God" may be useless. It would be safer to just travel to other worlds and wait until the time for Kai's ultimate move has passed before coming back.

Uchiha Hikaru buried this curiosity in his heart and planned to go to Ryūchi Cave to ask when he had time.

Listen to understand, but pay full attention.

If measured by numbers, if the difficulty of practicing ordinary sealing techniques is 1, then the "Four Symbols Seal" may be 3, while the "Yin Seal" must reach 5 or even 7.

She thought that there was no one who could force her to use the extra blue bars stored in the "Yin Seal".

But...

Theoretically, a ninja can contract with several psychic beasts at the same time, but beings with personalities like the Three Holy Lands would probably not be willing to share a contractor with another family. If one operation is not good, it may be rejected by both parties at the same time, or even unilaterally terminate the contract.

During this period, she explained the "Yin Seal" to Uchiha Hikaru orally.

then.

Because she has already signed a psychic contract with Longdi Cave.

Tsunade was determined not to sell it, so Uchiha Hikari had no choice but to give up.

Tsunade opened her eyes wide in shock and looked at her as if she had seen a ghost. She was speechless for a long time: "You..."

As for Uchiha Hikaru...

When Uchiha Hikaru followed Tsunade's instructions and tried to mobilize the chakra in his body, the situation was different.

Uchiha Hikaru finally spent eighteen million taels to buy the lifelong rights to use the "Yin Seal", "Strange Power", and "Hundred Heroes' Technique". Plus a month of personal instruction from Tsunade herself.

Tsunade:"……"

"what happened?"

of course……

As for the contract scroll of Shigulin Forest...

"...Go and look in the mirror."

"?"

Uchiha Hikari came to the mirror with some hesitation. He first admired his fair and delicate face, and then saw a light purple diamond-shaped mark quietly emerging from the middle of his forehead.

This is clearly a sign of successful cultivation of the "Yin Seal"!

"It's okay, it looks pretty good. It would be nice if I could customize the shape..."

This was Uchiha Hikaru's first thought.

The second thought is——

"Am I actually a genius in the art of sealing?"

But soon, Uchiha Hikaru understood.

The current result is probably related to her recovery.

The difficulty of practicing "Yin Seal" is mainly in the first step, which is to use chakra to regulate the body's meridians and construct the circuit of the technique.

This is a long-term project, and like developing blood inheritance limits, it requires a lot of time accumulation.

However, Uchiha Hikari's body had already been transformed when he made a wish to Shenlong. Her strong recovery power repaired and adjusted her body functions all the time during this year.

Although the principles are not the same.

But different paths lead to the same destination.

This saved her the most time-consuming work.

Of course, Tsunade didn't know this.

After tentatively checking and confirming that Uchiha Hikaru had indeed activated the "Yin Seal", the nearly forty-year-old blonde woman opened her mouth slightly, a little doubtful about life.

"Should I say that I am worthy of being the grandma of the Uchiha clan? This talent is simply..."

"pity……"

Too bad he was an Uchiha.

If such a genius appeared among the descendants of the Thousand Hands clan, it would probably be a rare blessing. Even if he appeared on Rope Tree, he might not die...

Tsunade shook her head, recovered from her subconscious thoughts, and coughed: "Your qualifications surprised me, but don't be too proud. Being able to construct a magic circuit means that you have successfully started. , but what ultimately determines the height of the 'yin seal' is the size of the 'reservoir'.