Konoha: Offer your heart to the Hokage!

The research on Yin Seal and Impure World Reincarnation was relentlessly draining his energy. The fatigue, multiplying exponentially, surged back like a tidal wave, leaving him utterly mentally exhausted.

She could even clearly sense that her weakest organ, her heart, was on the verge of death under the continuous high-intensity pressure.

The heart of an ordinary genin became a consumable item for him.

They simply won't survive until the day they naturally age.

No wonder ordinary ninjas dare not use shadow clones; without a special physique, using shadow clones can really lead to death.

If Shadow Clone Technique is already so powerful, then the advanced Multiple Shadow Clone Technique is something that only someone with a physique like Naruto Uzumaki, who has multiple buffs, could use at will in the true ninja world.

However, Shen Er had anticipated this.

Necrosis?

Just replace it.

He personally cleaned up all traces of the underground laboratory before returning to the surface and lying back in bed.

He no longer needed to worry about his physical energy, as the Yin Seal had begun to take effect, but the depletion of his spiritual energy was a real problem. He still needed sleep to replenish this deficiency.

Moreover, unless necessary, due to human instincts and emotions, I have never even considered completely giving up "sleep," a process that allows the mind and body to relax briefly.

I'm going to trick Uchiha Chiri tomorrow...

They also need to replenish their energy.

She then closed her eyes.

...

The next evening.

The setting sun bathed the stone slabs of the Uchiha ninja training ground in a warm orange hue, while the evening breeze carried a faint scent of burning fire-style techniques.

cloister.

Uchiha Chiri rested her cheek on one hand, her elbow on her knee, her purple hair swaying slightly in the wind.

She tilted her head and looked at Shen Er sitting next to her. "Today's Fire Release training is over. Shen Er-kun, is there anything else you need me for?"

Based on their usual interactions, Shen Er would never take the initiative to contact her outside of ninjutsu training and weekends, let alone have such a strange expression.

Shen Er remained silent for a moment, and a rare look of hesitation appeared on his face.

He slowly began to speak: "Well... there's something I want to tell you."

“I have a skill that I intend to teach you, Zhili.”

"Technique?"

Uchiha Chiri's curiosity intensified. "What kind of technique is it? Could it be... a medical ninjutsu?"

In her memory, all of Shinji's ninjutsu and research were related to medicine.

“It’s not a medical ninjutsu, it’s a sealing technique.” Shen said, solemnly taking out an ancient scroll from his robes and handing it to Zhili. “Its name is Yin Seal.”

Yin Seal!!

Uchiha Chiri's pupils contracted.

As a legendary ninja who followed Uchiha Madara and Uchiha Izuna through countless battles in chaotic times, she naturally knew about the Yin Seal, having personally experienced it.

That was the signature ninjutsu of Mito Uzumaki, the wife of his former nemesis Hashirama Senju, and a closely guarded secret of the Uzumaki clan.

She was unaware of the specific principles and full effects.

But she could never forget it.

During a battle, Mito Uzumaki released the Yin Seal, unleashing a terrifying torrent of chakra. She unleashed advanced ninjutsu as if chakra were no object, the saturation attack overwhelming her, who at the time only possessed the three-tomoe Sharingan, leaving her in a very sorry state.

therefore……

She was deeply impressed by the Yin Seal.

"Shen'er Jun, where did you get this skill from?"

"I can't help but say it," Zhili said instinctively, but as soon as the words left her mouth, she realized that her question was ridiculous.

Concern leads to confusion; even this basic common sense has been forgotten.

Could anyone other than Mito Uzumaki have given him such a secret technique as the Yin Seal? It couldn't have been stolen or robbed. Even Madara Uchiha couldn't have accomplished something like this within the Senju clan's territory.

They'll get a double beating from the couple.

"Did Lady Mito give it to you?"

She reached out her hands and solemnly accepted the scroll from his hands.

"Yes." Shen Er nodded slightly. "To be precise, it was a gift that the Hokage and Mito-sama decided to give to me together."

"then you……"

"You must have many questions in your mind. Before I answer them for you, take a look at the contents of the scroll."

"it is good."

Uchiha Chiri slowly unfurled the scroll on his lap.

The scroll was quite long, and to prevent the end from drooping to the ground, she naturally laid the other end on Shen'er's lap and began to read it carefully.

The further she looked down, the more astonished she became.

[Yin Seal: Used to accumulate and store chakra, and also to maintain appearance and preserve youthful looks.]

She first noticed the effect of maintaining youth, and only later noticed the effect of storing chakra.

No woman can resist the temptation to preserve her beauty and delay aging.

Moreover, Zhili suddenly remembered that Shen had mentioned to her that the Zen clan was born with a long lifespan.

Thump, thump

The air was so quiet it was almost stagnant; she could even clearly hear her own heart pounding. The last time she felt such a surge of emotion was when she awakened her Mangekyou Sharingan.

She realized something, and at the same time, she also realized that she and Shen'er were standing way too close together in order to see the scroll.

Her throat tightened slightly, and she spoke softly, "Shen'er, you..."

"Shhh."

Shen Er raised her index finger to her lips, her voice gentle and soft: "All your thoughts right now are correct, but please don't say them out loud yet. The Yin Seal is very difficult to cultivate, and I don't want to put too much pressure on you."

He paused, then his deep, magnetic voice slowly sounded close to my ear:

"Besides what you've already thought of, I also need you to learn it. After that, I'll conduct some experiments on you to help you completely cure your bloodline disease."

Zhili could barely hear what was said after that.

The phrase "Your idea is right" kept echoing in her mind.

Chapter 45 There are many geniuses, but they all call me a genius.

Unable to calm his emotions, Uchiha Haru forcefully suppressed the turmoil in his heart and asked:

"What kind of experiment are you talking about?"

Shen Er looked up at the drifting clouds on the horizon and calmly said:

“During your recent physical examinations, I observed with my Palm Healing Technique Chakra that your brain secretes a special kind of chakra.”

“I suspect that’s the root cause of the cerebellum’s effects and the bloodline disease. I need you to try to slowly store this special chakra after you’ve mastered the Yin Seal.”

"Once you have accumulated enough chakra, I will let you release the Yin Seal and release this chakra all at once."

"Then I will find a way to extract this special chakra from your body as a research sample."

She paused for a moment, her voice drifting away on the wind: "By then... your bloodline disease might be completely cured. We might even be able to use this as a model to standardize the treatment course for bloodline diseases."

The most brilliant lie is nine parts truth and one part falsehood.

The reasons given by Shen Er are undoubtedly convincing.

Primal Chakra is indeed closely related to the brain, and it may hold the key to curing bloodline diseases.

But for him, this was merely a side effect.

His real purpose was simply to use this legitimate excuse to collect the original Mangekyou Sharingan chakra and incorporate it into his plan to create an artificial Mangekyou Sharingan...

"So that's how it is."

Uchiha Chiri instinctively felt something was off.

brain……

Or rather, all organs and parts of the body are always a secret to ninjas. Even when a teammate dies during a mission, their body must be destroyed to prevent the enemy from discovering any secrets.

This is especially true for clans like the Uchiha and Hyuga who possess ocular jutsu bloodlines.

Let alone outsiders, even members of their own tribe cannot easily touch this territory.

But Zhili's trust in Shen'er led him to automatically overlook this strangeness.

She took Shen'er's hands and placed them on her temples, asking softly, "Can you feel that special chakra you mentioned now?"

That's all.

Her pupils turned crimson, and three tomoe appeared in the depths of her eyes.

"Yes, I sensed it." Shen Er said without changing his expression. "When the Sharingan is opened, the chakra is transmitted from the heart to the brain, and then transformed by the brain to form this special chakra that can open the Sharingan."

"I call it Primal Chakra."

As she spoke, she activated the Palm Healing Technique and injected it into Chiri's brain to disperse the excess primordial chakra and prevent it from flowing back into her body.

"Now deactivate the Sharingan."

The three magatama spun like the wheel of fate until they disappeared, and Chiri's eyes returned to clear black.

This blatant attempt allowed Shen to perceive the existence of Primal Chakra more clearly.

He asked gently, "When I used the Palm Healing Technique to clash with the Primal Chakra, did you feel any discomfort?"

“No.” Uchiha Chiri shook his head. “Actually, if you hadn’t brought it up with me, I would hardly have noticed the extra part.”

The conclusion has been confirmed.