What Era Is It, Still Writing Traditional Diaries

Concise, very concise.

Six years old, no information on parents, first-grader at Teitan Elementary School, currently residing at the detective Mouri Kogoro's home.

As for Mouri Kogoro's file, there's much more.

From elementary school to police academy graduation, he married Eri Kisaki, who is now a famous lawyer, had a daughter, and then separated. He worked as a police officer for a few years, suddenly resigned, and opened a detective agency. In the years prior, he was merely a third-rate detective, until recently when he suddenly had a breakthrough, consecutively solving numerous murder cases and earning the title "The Sleeping Detective," all of which are recorded in his file.

"So, it's actually Edogawa Conan, who suddenly became a child, who is guiding him behind the scenes to solve cases?" Through the diary entries, Shinomiya Kaguya could certainly discern the truth. At the same time, she felt a ripple of emotion due to APTX4869, a substance that could revert someone to a younger age.

Unfortunately, she quickly saw the warning from a mysterious person that followed.

A 99% mortality rate, and that criminal organization that dared to fire upon Tokyo Tower in an armed helicopter, and in the story, even nearly killed the second daughter of the Suzuki Conglomerate. Shinomiya Kaguya knew very well that this was not something she could provoke.

The same applied to the Pandora Gem, which could grant immortality. Currently, she was not qualified to even consider such a matter.

After finishing the rest of the diary, she fell into deep contemplation.

The fact that Hoshino Ai's children were reincarnated individuals might have been explosive on its own, but compared to APTX4869, which could revert people to their youth, the Pandora Gem, which could grant eternal life, and the many other secrets this world might hold, it was insignificant.

The impact on Shinomiya Kaguya's mindset was less than the mysterious person's casual mention in the diary about the later plot of Kaguya-sama: Love Is War collapsing into a rushed ending.

"This 'Kaguya-sama' should be my story."

The surname wasn't mentioned in the diary, but just as Kasumigaoka Utaha could instantly identify the "Kasumigaoka senpai" mentioned in the diary as herself, Shinomiya Kaguya was also very certain that the "Kaguya-sama" mentioned by the mysterious person was indeed herself.

"Because the later stages involve politics and business wars, the author couldn't grasp it, leading to problems in the plot..."

With just this sentence, Shinomiya Kaguya couldn't deduce the specifics of her future experiences. However, from the mysterious person's slightly teasing words, she could tell it wasn't anything good.

"Why couldn't you write more, even just one more sentence..." Even though Shinomiya Kaguya knew from childhood that she would become a tool for her family in the future, she still held the right to freely decide her own life.

Thinking this, Shinomiya Kaguya wrote a "3" in the diary, representing the three paths laid out before her.

Find a way to locate this mysterious person, ask her about her future, and make plans in advance—but the mysterious person, besides revealing a clue about having a sister, had no other information so far.

Accept fate and act according to the original life trajectory—this was the simplest, and the path she was most unwilling to accept.

Seek the hidden secrets of this world and gain the power to change her own life—this seemed like the most convoluted path, but...

Shinomiya Kaguya looked at the diary in her hand. This was naturally part of the world's secrets, and perhaps even the biggest secret.

"If I accumulate 5 more reading points, I'll unlock the usage permissions for the diary. Will I be able to change my future with the diary's power then?"

Chapter 8: The Optimal Combination of Pure Yang Body + Ripple Chi Kung

As Shinomiya Kaguya chose her future direction, Miyauchi Hiyage, on the other hand, eagerly received his daily reward.

[You have drawn Ripple Chi Kung (JoJo's Bizarre Adventure)]

The moment the prompt sound fell, Miyauchi Hiyage felt a flood of unfamiliar knowledge pour into his mind.

As he closed his eyes and accepted this memory with his heart, his breathing rhythm unconsciously drew closer to that in the memory.

And this change in breathing rhythm was no small matter.

Ripple Chi Kung was researched by ancient humans, using breathing rhythm to control the flow of the body and blood, capable of stimulating the body's life energy in the form of solar energy.

Simply put, Ripple Chi Kung was a breathing technique that allowed one to use solar energy.

And Miyauchi Hiyage, possessing the Pure Yang Body, was undoubtedly the most compatible person with Ripple Chi Kung.

Even by subconsciously adjusting his breathing to the rhythm of Ripple Chi Kung, the ripple energy surging within him already far surpassed the limits of ordinary people. His skin even emitted a dazzling golden glow due to the overflow of ripple energy!

Fortunately, he was trying it in his own bedroom with the door closed, so no one saw this scene. Otherwise, he estimated he would have been worshipped as a deity by the villagers.

Miyauchi Hiyage quickly controlled the ripple energy according to the memories in his mind.

"This is killing me. I didn't expect the Pure Yang Body to have such a great boost to Ripple Chi Kung. I wonder how it compares to Kars, who became a perfect being in the manga?"

In the manga, after Kars became a perfect being, his first use of Ripple could directly melt a human. As for him, his first use of Ripple turned him into... well, a light bulb.

Of course, this was just because the method of using Ripple was different.

In his memory, the technique that could generate high temperatures should be "Scarlet Overdrive." He planned to find a chicken by the river tomorrow and try to see if he could perform a bare-handed roast chicken under the effect of Ripple Chi Kung.

Speaking of which, besides granting the user physical abilities and combat power far beyond ordinary people, Ripple Chi Kung also had various other uses depending on the breathing rhythm.

Stimulating human potential, delaying aging, healing external wounds, promoting plant growth, controlling creatures, and so on were all abilities that appeared in the manga.

"But Ripple Chi Kung is clearly a technique that uses solar energy. Yet, I didn't feel any signs of overheating just now. In fact, I felt much more comfortable. Could it be that Ripple Chi Kung can control the side effects of the Pure Yang Body?"

Realizing this, Miyauchi Hiyage's eyes lit up.

The Pure Yang Body originally only had the passive function of repelling evil. However, Ripple Chi Kung possessed infinite possibilities. If Ripple Chi Kung could truly control the power of the Pure Yang Body, then he would truly have the ability to protect himself in this world.

Moreover, based on his current observations, the possibility he suspected was very high.

People with the Pure Yang Body had extremely strong Yang energy within them. Chongyun from Genshin Impact, for example, couldn't find a way to channel his internal Yang energy and could only rely on his Cryo Vision to suppress it, carefully avoiding anything that could cause his internal Yang energy to go berserk.

Ripple Chi Kung, on the other hand, wasn't about suppression but about stimulating the body's life energy through breathing rhythm.

Yang energy itself was life energy close to solar energy, so it wasn't strange for it to be stimulated by Ripple Chi Kung.

With this thought, Miyauchi Hiyage cautiously tried again, confirming that Ripple Chi Kung could indeed regulate and channel the Yang energy within the Pure Yang Body to a certain extent.

The only problem was that the channeling process inevitably produced the light of Ripple.

"This means that as long as I can find a way to hide the Ripple light and maintain the Ripple breathing, I won't have to worry about Yang energy going berserk ever again."

It sounds easy to say, but it's actually quite troublesome to do.

Ordinary people wouldn't have this problem; after all, they don't have such a vast amount of life energy within them. Even maintaining Ripple breathing constantly wouldn't cause any unusual effects.

But Miyauchi Hiyage had too much pure Yang energy within him.

If life energy were quantified, a normal Ripple user would convert 1 to 2 units of life energy into 1 unit of Ripple energy. However, the Yang energy within him could achieve 1.5 units or even more Ripple energy from 1 unit.

His original Yang energy was already in excess, so naturally, he couldn't store much of the converted Ripple energy.

"At least I've found a place to vent. After I test the combat power of Ripple Chi Kung tomorrow, I'll go to the orchard behind my house and try to accelerate its growth. That should bring the Yang energy in my body back to normal levels. I wonder what kind of fruits the trees will bear after being accelerated by Ripple energy."

Miyauchi Hiyage had even started thinking that if the acceleration effect of Ripple was good, he might secretly cultivate some ginseng seeds in the future.

"To start off with the best combination of Pure Yang Body and Ripple Chi Kung, my luck seems to be quite good," Miyauchi Hiyage, who had been complaining about the diary's rewards just yesterday, had completely changed his attitude today.

"Speaking of which, the cultivation conditions for Ripple Chi Kung aren't that strict. As long as you maintain a steady breathing rhythm, it's much more reliable than the 'Ki' in Dragon Ball that requires you to feel it with your heart."

Compared to other superpower systems, Ripple Chi Kung, aside from having more minor tricks, only offered mediocre combat power.

Let alone comparing it to Ki, which can destroy heavens and earth, even when compared to Sun Breathing from Demon Slayer, which is the most similar in nature to Ripple Chi Kung, their expressive power was vastly different.

However, the breathing techniques in Demon Slayer have the suspicion of draining life force, and there's even a debuff that limits your lifespan to 25 years after opening the Demon Slayer Mark.

Ripple Chi Kung, on the other hand, at least in the manga, didn't show any negative side effects. Even Joseph Joestar, who frantically pushed his potential in his youth, lived into his nineties even after neglecting his Ripple cultivation in his later years, making it a rather safe method for health preservation.

"Even if ordinary people with no talent cultivate it, it can strengthen their physique and slow down aging. For girls, this should be the ability they dream of, right?"

Thinking of Lisa Lisa's youthful appearance in the manga, still looking like she was in her 20s or 30s at 50, Miyauchi Hiyage stroked his chin, feeling like he already knew what to write in his diary tomorrow.

He would directly write down the cultivation methods of Ripple Chi Kung and some cultivation insights. Which girl reading the diary could resist such temptation!

Miyauchi Hiyage didn't know if those girls could successfully cultivate Ripple just by relying on written instructions without any guidance.

He also didn't know to what extent they could cultivate Ripple Chi Kung with their aptitude.

In any case, he would be happy if even one succeeded. Besides maintaining health and youthfulness, it would also serve as a last resort for self-preservation when encountering danger.

As for whether it would affect this world?

Miyauchi Hiyage pouted.

What a joke. If they already have the diary, do they still need to worry about a mere Ripple Chi Kung?

Chapter 9: On the Improvement Effect of Ripple Chi Kung on Skipping Stones

The next morning, a refreshed Miyauchi Hiyage went alone to the mountain behind his house to find a place to experiment with the abilities of Ripple Chi Kung.

When he watched anime in his previous life, Miyauchi Hiyage knew that the Miyauchi family had mountains, but he only realized after transmigrating that they had mountains, and not just one. However, in such a rural place, there was neither the energy nor the manpower to develop these wild mountains.

Miyauchi Hiyage had initially thought it was a shame that his backyard mountain was always left unattended, so he thought about filming rural videos to earn some money to develop the wild mountain.

Three years have passed, and a large pear orchard has been planted on the previously abandoned mountain.

These pear trees are part of a cooperative project with the Agricultural Cooperative. The Agricultural Cooperative manages everything from the initial selection of species to pest and disease control. Once the fruits mature, they will be sold under the name "Asahigaoka Pear," and he can just wait to collect his share of the profits.

Similarly, there are newly established breeding farms and fishing grounds in Asahigaoka. These were all funded and managed by the Agricultural Cooperative. Relying on the reputation of Asahigaoka as a popular village, these products are guaranteed to sell well in the coming years.

Although Miyauchi Hiyage knew that Asahigaoka, which he had built up, would have at least 70% of its profits taken by the Agricultural Cooperative, it was already considerate of the Agricultural Cooperative, as a super organization that basically monopolized the Japanese agricultural market, to leave him 30%. After all, how many people in Japan were not coveting that 30%?

Bypassing these pear trees managed by the Agricultural Cooperative, Miyauchi Hiyage naturally wouldn't use them for accelerated growth; it was too conspicuous.

He walked to the other side of the mountain, where there were about a dozen fruit trees of various types planted crookedly.

There weren't many, but they were four or five-year-old fruit trees. Miyauchi Hiyage had instigated the students of Asahigaoka branch school to plant them together when he was bored at the age of ten.

Although it was just for fun, the children from various families were all excited when Miyauchi Hiyage painted a "big picture" back then, saying, "As long as we can grow them, we'll have endless fruit in the future."

During those days, families with children in the village were consuming all sorts of fruits, collecting seeds from over ten types of fruits, digging hundreds of holes, and working for several days to plant them all.

The germination rate of this somewhat chaotic tree-planting activity was naturally disappointingly low. Only these dozen or so trees managed to survive tenaciously to the present.

The quality of the fruits they bore was also hard to describe, considered defective products of modern agriculture that even a dog next door would shake its head at.

When the first batch of fruits from these trees matured, the village children even held a celebration, but that was the end of it.

Now, apart from the tattered wooden signs hanging on the fruit trees that indicated the identity of the planters, there was no longer any sign that these were artificially planted fruit trees.

However, such an unvisited place suited Miyauchi Hiyage's intentions.

He found the peach and plum trees he had planted. The small peach tree was now in its flowering season, while the plum tree's flowering season was a bit later, and it only showed a few small buds.

Miyauchi Hiyage glanced around, confirmed no one was there, and then placed his hand on the trunk of the plum tree.

As Ripple energy was carefully transmitted through his palm to the plum tree's trunk and then conducted to the branches, a miraculous scene immediately appeared before Miyauchi Hiyage's eyes.

The plum tree, which was supposed to enter its flowering season in another half a month, quickly bloomed with delicate white plum blossoms in a short period.

The accelerating effect of Ripple energy on plants seemed quite significant. If Miyauchi Hiyage could unleash one unit of Ripple energy with a single breath, he would only need 0.5 units of Ripple energy to make this underdeveloped plum tree bloom ahead of time.

By injecting another unit of Ripple energy, the plum tree's congenital deficiencies were basically compensated. Now, anyone who passed by would recognize the vitality of this tree.

However, after blooming, it needed pollination to bear fruit.

Although Ripple Chi Kung had many functions, helping flowers pollinate was indeed a bit beyond its scope.

Plum trees have low self-pollination rates. Miyauchi Hiyage tried again and found that after replenishing the plum tree's nutrients, continuing to input Ripple energy wouldn't result in fruit but rather cause the Ripple energy to gather at the roots and overflow into the soil, wasting it.

"After the fruit trees complete pollination, it should still be possible to use Ripple to promote fruit growth. I hope that with the effect of Ripple energy, the fruits will become tastier."

Having noticed this, Miyauchi Hiyage's test on the growth-stimulating effect of Ripple energy on plants was complete.

He then transmitted one unit of Ripple energy to each of the other fruit trees in sequence, preparing to wait until the summer vacation returned to taste the fruits of his labor.

Afterward, he briefly tested other uses for Ripple energy.

Due to the amplification of Ripple Chi Kung by his Pure Yang Body, he could easily ignite branches using Scarlet Overdrive.

Turquoise Blue Overdrive formed an extremely taut ripple net beneath his feet, allowing him to run effortlessly on the water's surface. With further research, flying and running along walls like in Naruto shouldn't be a problem.

Hermit Purple Overdrive, which was adept at conduction, manifested in the original work as striking a bull through a mountain. In his hands, the "mountain" in the middle was skipped entirely; the powerful ripple could directly transmit through the air to attack a target two meters away.

As for Yellow Ochre Overdrive, the most powerful one, Miyauchi Hiyage had not yet determined its upper limit. Anyway, when he threw a punch, a fist-sized rock felt no different than tofu. He'd probably need to find some thick steel plates to test it properly.