Precise Measurement

It can be trained!

Akaseki discovered with pleasant surprise...

The emotional stimulation during "Immersion" was effective for chakra transformation; as long as he activated his Sharingan in time, he could solidify the results!

With this realization, Akaseki began to lock onto specific emotional points, activating his Sharingan. Following the methods Fugaku had taught him, he visualized Fire Release chakra, using emotional stimulation to fuel his ocular power, and using his ocular power to excite his chakra...

An hour passed, and Akaseki felt... the results were even better than he had imagined!

Technically, this kind of technique relies on the accumulation of time; ocular power does not immediately affect the nature or shape of chakra.

Generally speaking, any method for training chakra nature or shape transformation is difficult to master quickly, let alone achieve sudden enlightenment overnight; it is merely a matter of geniuses being faster and mediocre talents being slower.

However...

This one hour for Akaseki was actually 120 hours!

Moreover, during these 120 hours, he was kept in a high-density state of emotional immersion, with a new emotional trigger every few minutes...

Even if the impact of such forced emotions was small individually, it could not withstand such accumulation.

Furthermore, because his conscious time was elongated while his body—especially his Sharingan—only experienced one hour, Akaseki was able to persist—the total time spent stimulating his eyes was only about ten minutes. With fine control, he didn't actually need to fully activate his Sharingan; as long as there was some stimulation, it wouldn't consume much ocular power.

In just one hour, Akaseki could already feel that his Fire Release ninjutsu had a higher temperature and was slightly more difficult to extinguish...

That's right, in terms of the types of stimulation, Akaseki's hour could be described as "seventy percent anger, thirty percent sorrow." As for "joy" or "happiness," they were completely negligible.

The reason there was "sorrow" at all was entirely due to his Hypothalamus being forcibly hijacked; otherwise, Akaseki would have only felt "anger."

Consequently, Akaseki added another item to his training regimen—whenever he was immersed in a short drama, he would activate his Sharingan during emotional outbursts to stimulate his chakra transformation!

Akaseki estimated that even the most talented member of the Uchiha Clan could at best achieve better results from a single stimulation, but they could never compete with his efficiency.

Right during his "binge-watching" session that night, Akaseki unlocked a new reward...

[Prosperity Realm Physical Examination Device: Only one drop of blood needed to detect the condition of the entire body. Results in sixty seconds. Know your health early...]

"A physical examination device? What kind of thing is this?" Just as Akaseki was feeling puzzled, he felt a slight sensation between his eyebrows, and a drop of blood was already taken—that's right, once again, it had automatically agreed without him noticing.

Akaseki: ...

However, Akaseki had originally wanted to test its functions anyway.

[Detecting... Abnormal genes detected... Correcting detection items... Detecting... Correcting detection items...]

Akaseki was also confused; this seemed to be taking longer than sixty seconds?

After two or three times the expected duration, the results finally appeared.

[Detection Results:

Fire Release chakra (Awakened, 0.43%): Swift Flame (0.01%), Scorching Heat (1.12%), Incineration (0.88%), Overspread Burning (0.20%), Unknown, Unknown.

Earth Release chakra (Awakened, 0%): Unknown, Unknown, Unknown, Unknown, Unknown, Unknown.

Lightning Release chakra (Awakened, 0%): Unknown, Unknown, Unknown, Unknown, Unknown, Unknown.

Wind Release chakra (Unawakened).

Water Release chakra (Unawakened).

Yang Release chakra (Unawakened).

Yin Release chakra (Awakened, 0%).]

Akaseki: ???

What is this?

Is this a physical exam?

Why did it directly detect chakra changes?

And... what do these Swift Flame, Scorching Heat, and Incineration mean?

Akaseki first felt that the detection results were inexplicable, but then he recalled the surprises it had brought him before. He calmed down, thought about it carefully without bias, and immediately made a new discovery!

"Wait... judging from the 'Awakened' status, it does indeed match my current state: Fire, Earth, Lightning, and the Yin that naturally awakened after I opened my eyes... and now, except for Fire Release chakra, the others are all 'Unknown' clusters. For the Fire Release category, there are four known items, could it be..."

Akaseki immediately realized that the difference in his Fire Release chakra lay in the fact that he had just used four emotions to stimulate its transformation!

Having thought this far, Akaseki understood—[Swift Flame] was the spread speed, [Scorching Heat] was the temperature, [Incineration] was the difficulty of extinguishing, and [Overspread Burning] was the flame range. These corresponded exactly to the Fire Release chakra changes brought about by the four stimuli of "joy, anger, sorrow, and happiness."

From the percentages, one could also see the differences between the four...

Swift Flame was the lowest, Overspread Burning was second, Scorching Heat was the highest, and Incineration was second.

This matched Akaseki's previous stimulation situation perfectly...

As for that piece of trash Family Happiness, who could possibly feel joy watching that? Akaseki couldn't even figure out where that 0.01% of joy came from... perhaps he felt the protagonist deserved it, and found it "amusing" in a self-deprecating way?

As for "happiness," he could occasionally feel it, mostly in the sense of being "so angry he laughed."

"Anger" was the most frequent, followed closely by "sorrow." For Akaseki, the former was mostly an emotion he actively triggered himself, while the latter was more often driven by the rhythm of the Immersion system...

After seeing through this layer, Akaseki understood that it seemed this Immersion system categorized chakra changes into six types, rather than just "nature transformation" or "shape transformation."

As for the percentage after [Fire Release chakra, Awakened], Akaseki calculated it and realized it was the average of the other six items, feeling similar to a total progress bar.

In this way, the fact that the other chakra categories remained "unknown" made sense—it was simply because they hadn't changed yet!

Akaseki had previously only used emotions to stimulate his Fire Style chakra. After all, within the Uchiha Clan, there were no specific summaries on how to cultivate other types of chakra; how to stimulate them and how to correspond to them were things Akaseki had to figure out for himself.

Furthermore, within Fire Style itself, there were still two variations that remained "unknown." It was evident that beyond "joy, anger, sorrow, and happiness," there must be other emotions capable of stimulating chakra changes, but they were perhaps rare enough that the Uchiha Clan had never summarized them.

However, Akaseki could make a rough guess as to the nature of these corresponding Fire Style variations. The other two were likely "adhesion" and "explosion." The former allowed Fire Style chakra to stick to targets more easily and could be applied to ninja tools, while the latter caused Fire Style chakra to undergo an "explosive" change, enhancing its impact force rather than relying solely on heat to inflict damage.

Fire Style: Phoenix Sage Flower Nail Crimson and Fire Style: Ash Pile Burning were the representatives of these two variations. The former attached flames to shuriken, while the latter generated explosions, both being ninjutsu distinct from standard Fire Style.

"This percentage... could it really be this precise? It isn't just random, is it?" Akaseki remained somewhat skeptical.

But upon second thought, considering the miraculous nature of the system thus far, perhaps... it was true?

On the surface, this Physical Examination Device only allowed Akaseki to view his own status—it was merely for observation and didn't change anything.

Yet, if it could truly be this specific, the value of "observation" alone was immeasurable, perhaps even surpassing the Eye Protection Device or the Massage Device!

Just as Fugaku had said before, cultivating chakra changes was a grind that required day-in and day-out effort; it was a process of accumulation before a breakthrough. It wasn't like mastering a new ninjutsu, where once you learned it, you had it...

In other words, before the "breakthrough," the positive feedback from that "accumulation" was minimal. It was easy to develop thoughts like "this doesn't seem useful" or "did I cultivate this wrong," leading one to slack off and fail to persist.

But if one could precisely see their own progress, that in itself would be a tremendous encouragement...

Just like now, Akaseki was immediately filled with enthusiasm again, lost in the immersion of his training. He began to continue his cultivation: he would practice ninjutsu when his ocular power was replenished, and practice taijutsu when his physical strength recovered... he trained for the entire night.