I, Yu Uchiha, am devoted to cultivating immortality

It was getting late, so Yuu Uchiha personally sent Uchiha Shisui home to avoid any unexpected situations.

On the way, he reminded Zhishui: "You can tell the clan leader or a few elders about the Neko Immortal's cultivation method, but you don't want to tell anyone else and let the clan leader make the judgement."

"yes."

"In addition, this cultivation method is extremely effective, but it cannot completely replace physical training. You cannot stop exercising as you should. Only by working together can you achieve maximum growth."

"Is that so? I understand. I will stick to physical exercise."

The two of them just talked about training and soon arrived at Shisui's home. This is a large mansion with three entrances, and there are even ninjas acting as doormen in front of the door.

"Wow, your family is really nice." Uchiha Yu joked with a smile, "Then don't be late tomorrow."

Uchiha Shisui suddenly smiled happily. Uchiha Yuu was indeed different. When he saw the door of his house, he just sighed indifferently.

Unlike the friends I made before, as soon as they knew about their situation, they would immediately become timid and never be friends again.

With profound knowledge, rich experience, gentle personality, invincible popularity, and powerful strength, Yu Uchiha is worthy of being the only contractor chosen by Neko Sage. He is indeed an extraordinary and outstanding person.

"Brother Yuu!"

"Well, what's wrong?"

"Thank you very much for your hospitality and your teachings. I have gained so much today."

"You and I are both of Uchiha blood. Since we are destined to meet each other, we are family."

"One family does not speak two languages."

"Hi!! I won't be late tomorrow!"

"Okay, see you tomorrow."

…

When everything goes as planned, time always flies by.

Two days passed in the blink of an eye.

In the past two days, Lin and Shinichi completed treading water training one after another. In addition to treading water with weights, Uchiha Yuu began to teach them some fighting skills and correct some dangerous redundant movements.

As for real battlefield survival skills, they will definitely not be taught. After all, Uchiha Yuu himself is not suitable for the large-scale war that will follow.

Although a large number of records have been seen in the storage room, they are mainly based on the techniques of the Warring States Period, which may not be suitable for the current war model.

If this unproven thing were taught to three genin, wouldn't it be a trap?

"thump"

"I @%￥##@#@@"

Amidst the wailing noise of Uchiha Obito's defeated dog, Uchiha Yu turned his head helplessly and looked at the river: "How many times has this happened?"

Shisui covered his mouth and resisted the urge to laugh: "This is the 14th time."

"We started at half past eight, and it's not even nine yet..."

"This kid Obito...he's not the monkey who is difficult to surrender, he's the monkey sent to torture me!"

Uchiha stood up leisurely, reached the river in a flash, fished Obito out of the water, and threw the guy to the shore before Obito could let out his unique giggle.

Uchiha Yu's actions made Obito scream: "Ah——, I will succeed next time, I don't want..."

"No, what you need is weight-bearing exercise!"

He interrupted Obito's screams unceremoniously, put a forty kilogram weight on his body, and finally whispered thoughtfully: "If you dare to disobey, I will have to sit on the entire team."

"Obito, you don't want Lin to run with you while carrying weights. Her body is so weak..."

"Are you a devil?"

"No, no, no, I just choose to make you work harder between driving you crazy or tiring you out."

Uchiha Obito closed his mouth, his eyes were burning but he didn't dare to curse out, for fear that Uchiha Yu would use the reason for his mistake to punish Lin again.

Seeing Obito's anger and dare not speak, Uchiha Yu felt much better: "Enclose a wall around Konoha Village, let's go!"

Seeing Obito running out of the training ground angrily, Shisui couldn't help but worry: "Brother Obito seems to be very angry. Will he be injured if he runs like this?"

Uchiha Yuu glanced at it and no longer cared about it: "Don't worry, this speed is still within his tolerance."

"ah?"

"Shisui, you can't underestimate Obito. From a certain perspective, his talent is still above yours."

"It's just that his heart is too active and he can't show his talent."

"Really?" Shisui was so surprised that he couldn't help but look at Obito.

Until Uchiha Obito disappeared into the forest, he didn't see where the talent was in that stumbling figure.

"Stop looking, practice the movements I taught you again, and let me see if there is anything else that needs to be adjusted."

"yes."

"Concentrate, don't think about Obito. When he comes back, you can see it at a glance as long as you are careful."

"yes!!"

I have to say that Uchiha Shisui's talent is really visible to the naked eye. His movements this time are more proficient and smoother than the last time. The speed of improvement should not be too obvious.

Uchiha Yu couldn't help but praise: "Although it's not a perfect performance, in terms of the current state, I don't think there is anything that needs to be adjusted."

"Don't be happy yet, I have to see your performance in chakra extraction and retention next."

"yes!"

This is Uchiha Yu's attitude towards chakra, which is completely different from other ninjas.

Normal ninjas take chakra at will, extract the cells when it is needed, and then mix it with spiritual energy before using it in battle.

But Uchiha Yu believes that this is too slow, and the sudden and violent operation is also very bad for the body and can easily cause problems and injuries.

Ninjas who often fight on the front line are always exhausted even if they take good care of themselves, such as Tsuchikage Onoki.

The ninja who squats at the back safely, even if he smokes, is still alive and healthy, such as the Third Hokage.

Uchiha Yu believes that chakra must be extracted in an orderly manner, stored for a long time, maintained in peacetime, and exploded in times of war. This is a complete system. Only relying on the outbreak of chakra in times of war is an evil way to seek quick success and instant benefits.

Well, the neon spirit culture is popular in the ninja world, and it is not surprising that people are eager for quick success.

And the name of the ninja profession is very convincing. People who can endure everything are ninjas. To use chakra, you must first endure the inevitable pain in the body when chakra is running.

If you train from a young age, as time goes by, the ninja's body will adapt, the pain will decrease, and he will even get used to the pain, instead of feeling uncomfortable all over.

But he, Uchiha Yu, just couldn't accept it. Even this kind of pain was not as painful as Kawakawa's blow to Chrysanthemum.

Why did Uchiha Yu take the risk to absorb natural energy even though he knew it was dangerous?

First of all, in the worldview of the previous life, cultivating immortality was the highest and extraordinary path. If you don’t give it a try if you have the opportunity, can you still be considered a Yanhuang species?

But I was able to persevere until I discovered that the fire attribute is harmless, because a little natural energy can relieve the pain, the kind of vaginal pain that spreads all over the body, like rheumatoid arthritis.

Uchiha Yu taught Shisui adjustment techniques, all of which are key to eliminating pain and eliminating the harmful side effects of chakra. It can also retain chakra in the body for a long time, allowing the body to adapt to the chakra to the maximum extent, and enhance the output power and controllability of chakra.

According to the traditional understanding of the ninja world, chakra is the extraordinary power of killing people. Even medical ninjutsu requires a loss of life to treat injuries.

But Uchiha Yu believes that this is not absolute.

Because Kaguya Otsutsuki, the ancestor of chakra, is truly immortal.