Medical Treatment and Secret Arts

Late at night.

"This stuff is nothing but nonsense. I know that awakening the Sharingan requires the death of a loved one, but the key point is that I'm an orphan!"

Uchiha Ao slammed a scroll onto the table in frustration. The desk was covered in unfolded scrolls containing miscellaneous notes on Uchiha history.

For the past two days, besides practicing Thunder Breathing and the Great Fireball Technique, he had been scouring everywhere for miscellaneous notes and records regarding the Sharingan, hoping to deduce some useful knowledge for developing a secret method to trigger it.

The result was obvious.

The people who recorded these things either wrote about how their relatives died in battle and how grief-stricken they were, only to "snap"—awakening the Sharingan.

Or, they were laughing maniacally when someone interrupted them, causing them to awaken their eyes in a fit of rage!

Even more outrageous, there was one who was trying to pee, but someone kept standing behind him. He couldn't go, and in a fit of shame and anger, he awakened the Sharingan.

"Are you kidding me!"

Uchiha Ao slapped the table and stood up, fumed for a moment, then sat back down.

For the first time, he deeply understood the saying: "I often feel out of place with you all because I'm not perverted enough."

A moment later, he took a deep breath, calming his emotions.

He had hoped to rely on these experiences to improve the incomplete secret scroll, but whether it was because it was incomplete or because the amount of knowledge he had gathered wasn't enough, the progress bar had remained unchanged ever since it filled up.

As for practicing the activation technique, it had basically become his mandatory nightly routine.

However, no matter how he tried to stimulate himself.

Those painful memories from the past had gradually evolved from initial anger into a sense of numbness.

He figured that if he could meet those people from his previous life again, he might just give them a good beating and then a big hug.

"Unless... something new happens to stimulate my emotions!"

For example: Shocking! According to unofficial records, during the battle at the Valley of the End, Uchiha Madara and Hashirama Senju couldn't help themselves in the heat of the fight and shared a kiss.

Shocking! At such a young age, Tsunade's bust size has already reached 36E!

Shocking! On the night Kaguya Otsutsuki was sealed, her two sons actually did that!

Uchiha Ao's mouth curled into a troll face, but it was useless. These wild thoughts could only make his heart burn with gossip at best.

He coughed twice and reined in his thoughts.

"Forget it, I might as well practice that Fire Release: Hiding in Ash Jutsu. It could increase my chances of survival during border reconnaissance."

Unfortunately, my rank isn't high enough. If they assigned a beautiful Medical Ninja to me, heh, I'm just daydreaming...

"Hm?"

Uchiha Ao's eyes suddenly lit up.

Medical Ninja...

He hurried to the bookshelf and pulled out a thick book titled "Medical Ninjutsu Encyclopedia" from his vast collection.

He flipped through the pages rapidly. "I remember it being on which page... hmm... page 36?"

"No, it's page 48."

This page read:

Where in the cerebral cortex must you stimulate with Chakra to trigger drastic emotional changes?

The answer is the limbic system of the brain.

The limbic system is divided into three parts: the amygdala, the prefrontal cortex, and the hippocampus.

Amygdala: Responsible for immediate emotional responses, helping to recognize facial expressions and judge safety and threats.

Prefrontal Cortex: Plays an important role in emotional regulation, decision-making, and social behavior.

Hippocampus: Related to the formation and storage of emotional memories.

These regions, through mutual connection and collaboration, work together to realize the perception, expression, and management of emotions.

Uchiha Ao read the contents of the page over and over, imprinting them deeply into his mind.

The world of the original story is strange. Not only does it have home appliances like refrigerators, but the development of Medical Ninjutsu and various Forbidden Jutsu has even reached the point of bringing the dead back to life, yet at times, it still seems quite backward.

What he didn't expect was that the knowledge recorded regarding the development and utilization of the brain was exactly the same as in his previous life.

He gently rubbed the paper with his fingers and muttered to himself:

"If I were to stimulate this area with Lightning Release Chakra, what kind of reaction would it produce?"

The function of Lightning Release Chakra is to accelerate the division and activity of human cells, enhancing the body's speed, strength, and defense.

In the original story, the reason the Raikage has such fast neural reaction speed shows that Lightning Release Chakra indeed stimulates the brain.

If he were to concentrate Lightning Release Chakra to stimulate the limbic system of his brain, his emotions might be amplified several times over. At that point, the same memory might produce a different effect!

"It is indeed possible to operate... but the brain is one of the most fragile parts of the human body. If there is even the slightest mishap..."

Uchiha Ao gripped the book tightly, his knuckles turning white from the force.

With his current strength, having just opened the First Gate of the Eight Inner Gates, venturing deep into the border front was a near-death experience. Encountering even a single ninja squad from the Cloud Village could lead to his demise on the spot.

But if the experiment went wrong, he could also die instantly!

"I must make a decision..."

A moment later, he set down the mission scroll and picked up the reference book again, studying the detailed information within with focus. After reading it over a dozen times, a flicker of determination finally flashed in his eyes.

Since it was a near-death situation, he would seek life through death.

Even if he were willing to be a coward, to bury his head in the sand and dodge this reconnaissance mission, there was still Danzo and the Hokage waiting for him later!

In this chaotic world of ninjas, one cannot survive simply by hiding!

"Only by becoming stronger..."

Thinking of this, he took a deep breath, cleared all distracting thoughts from his mind, and concentrated his chakra.

Zzz...

Accompanied by blue electric arcs, his Lightning Release Chakra began to gather toward the top of his head. Once it fully covered the area, Uchiha Ao began to control these fine wisps of current, slowly passing them through his skull and directly toward his limbic system.

The moment the two made contact, he felt as if the entire world had become a bit clearer; his thoughts began to accelerate, and his neural reflexes became sharper.

The success of this initial probe led him to decide to continue guiding that volatile energy deeper into his brain. However, when the chakra touched half of his limbic system, a pain intense enough to make an ordinary person faint from agony surged over him like a tidal wave.

It felt as if someone were driving a red-hot iron rod directly into his brain matter and stirring it...

Drip...

Uchiha Ao's face turned pale from the excruciating pain, and sweat rolled down his forehead incessantly.

"Ugh... Hmph... I can't wait any longer. Open it now!"

Enduring the agony, he relied on his final reserves of willpower to activate the secret technique he had long since memorized.

The floodgates of memory swung open once more!

Those long-forgotten images surged through his mind with several times their original intensity.

The numbness of pain from being beaten and forced to crawl between legs, the sorrow of being mocked and isolated in the workplace—at this moment, it all became incredibly real and deeply etched into his soul, as if he were reliving everything he had once experienced.

The pain was many times worse than before!

"Ah--!"

A roar that sounded barely human erupted from the depths of Uchiha Ao's throat. It was not a wail of grief, but a howl laced with fury and sorrow.

Ten seconds.

A mere ten seconds, yet it felt as long as a lifetime.

Thud.

As the final trace of Chakra faded from his eyes, his body went limp, and he collapsed heavily to the floor.

A moment later.

"Who goes there?!"

At that moment, several figures clad in the Uchiha Clan Uniform appeared with a series of swift movements on the roof surrounding Uchiha Ao's house.

They stood or crouched in various positions, holding Ninja Swords, and exchanged glances.

"Did you guys hear a strange scream coming from around here while you were on patrol?"

"I heard it... I was closer, and it seemed to come from Uchiha Ao's house. Should we go in and check?"

One of them, who seemed to know him well, scoffed, "Him? I've seen him a few times. He always acts like a lunatic when he's drunk. I bet that guy is just complaining about the world again in there."

"So that's it... What a loser."

The group chuckled, and seeing that there was no further movement, they didn't even bother entering his house before returning to their posts.

The next day, early morning.

Sunlight streamed through the window, hitting the floorboards inside the room as if coating them in a layer of gold leaf.

As time passed, the warm sunlight enveloped Uchiha Ao's entire body, as if bestowing new life upon him.

After a moment of silence.

He snapped his eyes open. Around his scarlet pupils, a single black tomoe emerged and began to spin incessantly.