It's Easy to Understand If You Just Imagine It

"Hmph~ How boring..."

Thinking about how she would have to meticulously draw tens of thousands of Yin Seal techniques onto her body, Sakura could tell that this would be a massive, time-consuming, and tedious undertaking.

It quickly became boring.

Everything in my imagination was wonderful, but the reality is that those stage three Ninjutsu are all still far from being realized. They are currently still at stage one or two, and the next stage of the Yin Seal is nowhere to be seen.

She's still a long way from reaching that form of Sakura!

She changed her posture from sprawled on the table like a salted fish, lying on the back of the chair as if her spine had been removed, kicking her feet back, causing the chair to creak and groan.

Swinging a high-backed chair back and forth like a hammock, using only its two rear legs as support points, requires considerable Taijutsu skill to perform. However, she can now do it effortlessly.

With her hands behind her head, legs raised high and swinging casually, Sakura stared blankly at the ceiling.

The monotonous nature of Ninjutsu always makes people lose motivation for work.

The girl's diligence in Ninjutsu stemmed from interest; when she encountered this Ninjutsu, she couldn't help but procrastinate, wanting only to find an excuse to avoid facing the boring reality.

"Damn it~ There's nothing else that absolutely needs to be done right now except for this!"

She pondered for a while before gritting her teeth and saying.

After a few minutes, I finally overcame my laziness and buried myself in my work.

I forced myself to work all morning, and around noon, I finally went out to find something to eat, my head heavy.

On the streets of Konoha.

"Hmm~" Sakura glanced at the sun; the time was neither here nor there, making her feel a little uncomfortable.

The ramen she had just eaten had already been digested. As she walked down the street, she touched her stomach, which was now completely flat. The urge to eat had returned, and she immediately felt sleepy.

"Should I go back for a nap, or go find my master?" she murmured to herself.

The midday sun was very bright, making the back of her neck feel warm, and she felt so lazy that she couldn't muster any energy.

Heh heh heh heh, feeling a bit languid all over.

Hmm... this is September sickness!

--Although it's almost October.

However, he eventually managed to walk to the Hokage's office.

Without knocking, Sakura walked in and saw Tsunade's sleeping face:

The Lord Hokage lay on his desk, his right arm, as white as jade, as he slept soundly.

From Sakura's perspective, a vast expanse of spring scenery was on full display: from the open collar down, her plump, soft breasts swelled like hills, and her two jade-like, creamy white lips squeezed together to form a deep cleavage; her fair, tender skin seemed to emanate a faint fragrance. It pressed against the table, undulating with her breath, changing shape like a water balloon.

She took a step closer, Tsunade, hearing the sound, groggily woke up.

"Sakura, it's you..." the Fifth Hokage murmured sleepily, "Is there something you need?"

She asked while rubbing her eyes, a trace of glistening saliva remaining on her full, crimson lips.

Sakura blinked – Didn't you tell me to come over?

The girl's bewildered look reminded Tsunade, who straightened her disheveled hair and clothes, finally clearing her head.

"Oh, right, that's it." She slapped her forehead, realizing something.

He then took a scroll from the drawer beside him; it was the Ninjutsu research progress report that Sakura had handed over, with two imposing characters written on it—

Cherry Blossom Impact.

"Your scroll." She handed the scroll back to the girl, who opened it and saw that it was filled with annotations.

"I've written down everything I think is inappropriate and needs improvement. Take it back and look at it yourself. If you have any questions, come back to me."

Tsunade patted the chair in front of her desk, gesturing for Sakura to sit down, and continued, "I've taken a look. Your Cherry Blossom Impact's first stage is basically complete. Go back and overcome those few problems. But you haven't been able to achieve the desired results in the second stage. In my opinion, your Ninjutsu has overlooked an important aspect."

She picked up a piece of paper and a pen, and quickly drew a few strokes on the paper.

A long pillar was drawn, with a protruding crown at the top.

"Look, these are two neurons, and this is the axon of the first cell," Tsunade explained to Sakura, pointing to the long pillar with her pen. "In fact, you only considered the transmission of nerve impulses along the nerve fibers of a single cell before, without considering that the transmission of nerve impulses from one cell to another actually takes a considerable amount of time."

Sakura saw a long pillar with a rounded tip, touching the edge of another cell.

Hmm... she understood. That long pillar was the axon of a nerve cell.

"This knowledge was originally supposed to be explained to you in detail in the next stage, but since you've already developed this Ninjutsu, I'll teach you it ahead of time."

"Come closer and look here," Sakura leaned over and saw Tsunade quickly complete the simple drawing, creating a complex pattern in just a few strokes.

Another nerve cell was drawn as well, with the tip of the axon resting against the edge of the second nerve cell.

Tsunade then pointed to the round crown on top of the long pillar.

"The axon of this neuron swells at its end, forming a cup shape called the 'synaptic body,' which comes into contact with the cell body or process of another neuron postsynaptic. This is a structural diagram of the contact area between two nerve cells."

"Very good, a long cylinder, a cup-shaped crown, synapses." Sakura stared at the diagram drawn by Tsunade, silently reciting these words, feeling an uncontrollable urge to laugh.

"After a nerve impulse is transmitted to the synapse body, the presynaptic membrane releases neurotransmitters—mainly acetylcholine—which cross the synaptic cleft and are sprayed onto the postsynaptic membrane of the next cell, stimulating it to produce nerve excitation. This is the process of nerve signal transmission between two cells," Tsunade explained to Sakura, pointing to various parts of the diagram with a pencil.

The synapse propels the medium onto the other's membrane. Sakura listened to Tsunade's explanation, nodding repeatedly. This process is really not hard to understand!

"Because the process is complex and uses chemical media to transmit signals, its efficiency is very low. Therefore, if your Phase Two development only focuses on accelerating the transmission of nerve signals in the fibers without considering this process, you will naturally reach your limits quickly and be unable to further improve the reaction speed!"

"Hmm..." Sakura took the paper and pen and pondered over the simple diagram for a while.

I carefully digested Tsunade's content. Stripped of all the technical jargon, Tsunade's content is actually quite simple.

All it takes is a bit of imagination.

She was quite intelligent and quickly sorted out her thoughts.

Nerve signals are transmitted from one end of a cell to the other, and then to another cell; these are two processes. The former is conducted using electrical signals, and the latter is conducted using chemical signals.

In other words, it's not enough for the signal light to travel quickly within the long column; the speed of the medium being ejected onto the back membrane also needs to be increased.

Sakura's previous second stage only considered accelerating the first electrical conduction process, without considering the chemical transfer process. The latter actually takes up a considerable amount of reaction time.

"I see... I understand now." Sakura put away the scrap paper.

I understand completely, without any ambiguity.

Her medical skills are really only so-so—but it's a big improvement from when she was practically an empty bucket. And this half-baked knowledge is the result of what she's learned by cramming into the medical books Tsunade gave her.

Since it involves studying books, it inevitably involves rote memorization without a deep understanding. Therefore, the development of Cherry Blossom Impact - Stage One was largely achieved by relying on her superb Chakra manipulation ability. However, in Phase Two, her limited knowledge became a major obstacle to developing Ninjutsu.

Sakura now deeply regrets not studying medicine in her past life. Trying to learn these massive medical concepts is incredibly painful and progresses very slowly. She knows she lacks knowledge about the human body, but expecting to learn it all in a short time is wishful thinking. Therefore, she can only continue learning while asking Tsunade questions.

Tsunade then asked, "So, have you figured out how to handle this problem?"

Sakura shook her head; how could she possibly have a good idea right away?

"I need to go back and think about it some more," the girl said honestly to Tsunade.

"Then I suggest you continue using the previous method; that method has great potential!"

The method Sakura used before was simply to create a new ion channel in the nerve fiber using Chakra to replace the original inefficient sodium-potassium channel. The nerve signal was transmitted in the new Chakra ion channel, and its speed was much higher than the signal transmission speed of normal cells.

She calls it Motor Nerve Electronification.

Tsunade's idea was to extend this approach to the chemical transmission process between the presynaptic and postsynaptic membranes, transforming the slow chemical transmission of nerve signals into efficient electrical transmission—a truly bold and enticing idea.

However, there are still a lot of problems to be solved regarding how to do it specifically.

Sakura was convinced that this was a good idea, and she couldn't help but start to think about it in her mind.

"Ahem, don't rush, Sakura, think about it when you get back," Tsunade coughed twice, interrupting Sakura's thoughts, and continued, "I have something else to say..."

She pulled two papers from the pile of documents and handed them to Sakura Haruno.

"I want you to join the Anbu."

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(A long-awaited 3,000-word "long chapter"! Celebrating the blooming of the night-blooming cereus in my home last night. Not as stunning as I imagined, just averagely pretty.)

(Book club group number 488076541, welcome to join!)