Kaio-ken's Geographical Analysis

Yuhara took a deep breath again. The next moment, his entire body seemed to dissolve into lightning. At the same time, he could no longer suppress the intense Lightning Release. The unrestrained current began to scatter outwards. The lightning that extended from his body crossed the narrow stream and reached the rock face on the opposite side.

Tigo was forced to retreat step by step, and the piercing sound made her involuntarily cover her ears.

If Yuhara's previous feeling could be described as boiling water, then now it was like pouring boiling water into hot oil.

Seeing himself looking like a gaudy firework, Yuhara couldn't help but frown. Then, under his control, the lightning on his body gradually weakened until it extinguished.

"Success."

Yuhara gave Tigo a heartfelt smile, even striking a playful peace sign.

Based on the Six Rulers Technique, the Blood Loss Technique and Arc Gradual Sevenfold Rhythm took effect. However, rather than calling these three Ninjutsu, they were more like three enhancement buffs.

The Blood Loss Technique goes without saying; its greatest effect was to greatly enhance Yuhara's physical abilities. The Six Rulers Technique and Arc Gradual Sevenfold Rhythm were spell formulas that increased Chakra quality.

Furthermore, the Arc Gradual Sevenfold Rhythm and the Six Rulers Technique did not have fundamental differences. Their only difference lay in the output efficiency of Chakra and Nature Energy.

Compared to the Six Rulers Technique, which directly infused Nature Energy into the meridians, the Arc Gradual was more complex.

After witnessing the Magnet Release Ninja from Kumogakure, Yuhara had been intentionally or unintentionally playing with his Chakra because he discovered the controllability of his own Chakra...

Yuhara, it seemed, was magnetic from the very core. Simply put, he could control not only metal but also the energy within his body, or rather, the latter might be the basis and internal cause of the former.

Therefore, after gathering Nature Energy together using a sealing spell formula, it also had a basis for further manipulation.

To put it metaphorically, if Yuhara's Arc Gradual Sevenfold Rhythm was to be explained, let's assume the Chakra flowing through his meridian system was a ball of blue cotton, and the Nature Energy in the seal was a ball of red cotton.

When the Chakra flowed through the sealing spell formula, Yuhara began his manipulation. By stretching and self-spinning, he twisted the blue "cotton" into a thread. The same applied to the Nature Energy. The next step was to twist the blue thread and the red thread together again... This was the origin of what was called the "double helix structure" in biological structures.

Alright, it should be said that this was "Arc Gradual Sevenfold Rhythm."

And since he could twist it once or twice, he could naturally twist it three or four times. The reason for the twofold increase in Yuhara's Lightning Release intensity was precisely because he twisted the two red and blue threads together again. Strictly speaking, what Yuhara had just used was not a sevenfold rhythm, but a onefold and twofold rhythm.

In terms of energy density alone, the twofold rhythm already significantly surpassed ordinary Sage Mode Chakra. However, Yuhara's method was very different from true Sage Mode—Sage Mode Chakra was a chemical reaction, while his method was physical addition.

Sage Mode Chakra had higher energy utilization efficiency. But regardless, the Arc Gradual allowed Yuhara to quickly apply Nature Energy in actual combat, so it was a good spell formula.

Even if we assume that the energy density of Nature Energy is on par with a ninja's Chakra, his output efficiency in the twofold rhythm state would be four times that of the original, which could be called a fourfold Kaio-ken.

According to Yuhara's completely subjective conjecture, in the onefold rhythm state, the quality of his Chakra was certainly inferior to Sage Mode Chakra, but in the twofold rhythm state, it should be greater than or equal to Sage Mode Chakra... He used twice the energy of Sage Mode Chakra and expected the killing effect to be on par with Sage Mode Chakra; this should not be too much to ask, right?

His Lightning Release in the "fourfold Kaio-ken" state was completely different from his Lightning Release in the "twofold Kaio-ken" state.

The Arc Gradual Sevenfold Rhythm was Yuhara's first attempt to organically combine "Magnet Release" with Sage Mode (simple splicing), and the effect it brought was very satisfying.

As for the drawbacks of this technique, there were mainly two.

First, this internal ZIP would cause a surge in energy flow and place a heavy burden on the meridian system. At Yuhara's current state, the twofold rhythm was already his limit.

Second, the Chakra consumption in the twofold rhythm state was double that of the normal state, so Yuhara would not use it unless it was an extreme situation... The Six Rulers Technique was already a very good enhancement.

Having completed the development of his new Ninjutsu, Yuhara's use of Nature Energy was now at a level higher than Jugo's but lower than a Sage's. He could also achieve an effect close to Sage Mode through secondary compression, although it was only physical addition, Yuhara added a lot.

In a sense, he could now be called a "Half-Sage," commonly known as Half-Sage Yuhara.

When operating at full power, Yuhara's strength could truly reach the Jonin level. In fact, his offensive power could surpass Kakashi's, but the problem of his Chakra deficiency had not been resolved from the root; the thirty-second "true man" time was still too short.

In this sense, Yuhara could express a little gratitude to Orochimaru, after all, the Nature Energy that ordinary people would never encounter in their lifetime was resolved by Orochimaru's needle.

With high-quality Chakra, Yuhara could actually try another technique, but there was no rush, because the problem he faced from beginning to end was not a lack of attack power, but a lack of endurance... He was tough, but also fast.

If Yuhara were to step onto the battlefield again, he could be considered a top-tier combatant.

Let's rewind time a bit.

When Yuhara and Tigo left Konoha's forward camp in the Land of Rivers, the Fourth Hokage had not left. Besides offering condolences, he had other matters to attend to here.

The Land of Rivers was situated between the Land of Fire and the Land of Wind. This country originally had a small ninja village called the Valley Hidden Village, but unfortunately, it disappeared during the Third Great Ninja War... For unknown reasons, it just vanished.

If the Vortex Hidden Village of the Uzumaki clan could be destroyed, it was perfectly normal for other small ninja villages to be wiped out by one of the Five Great Ninja Villages. As for whether the Valley Hidden Village would be rebuilt after the war, it would depend on whether the Land of Rivers could gain the support of a major power.

Geographically, the Land of Rivers was a long, narrow country stretching from north to south. In the western part of the country, close to the Land of Wind, there was a mountain range running north and south across the country. This mountain range was called the "Brown Earth Mountain Range."

This mountain range was not very famous, but a certain peak on it became very well-known after the Third Great Ninja War because its name was Kikyo Mountain... the battlefield where Konoha defeated the main force of Sunagakure.

In short, due to the obstruction of this mountain range, the warm, moist airflow from the South Pacific was blocked east of the Land of Wind. This terrain was one of the reasons for the desert environment in the Land of Wind.

The warm, moist airflow traveled north along the Brown Earth Mountain Range, and after entering the interior, it was finally blocked by the plateau terrain of the Land of Earth to the south... This was the origin of the rainy climate in the Land of Rain.

Simply put, after the Kikyo Mountain Battle, Konoha controlled most of the Land of Rivers, while Sunagakure could only hold the mountain line, preventing Konoha's influence from advancing further west.

Another important reason for the Fourth Hokage's visit to the front line was to prepare to sign an agreement with the Fourth Kazekage, namely the "Konoha-Sunagakure Border Non-Crossing Agreement."

The main content of this agreement was to prohibit Konoha and Sunagakure from crossing the Brown Earth Mountain Range, thus making the Brown Earth Mountain Range effectively a ceasefire line between the two major ninja villages.

The previous conflict was likely the last attempt by both countries. The result was that neither side could make any effective progress, and both sides completely gave up.

Since neither side was capable of advancing, the agreement was signed very smoothly, without any complications.

After the agreement was signed, Konoha controlled approximately three-fifths of the Land of Rivers, and these were all plains and valleys with suitable climates and fertile soil, suitable for grain production. As for the area west of the mountains controlled by Sunagakure... let's not talk about it; imagine it yourself.

This non-crossing agreement could basically be seen as a sign that the two countries were about to withdraw from the war, and it would be followed by a ceasefire agreement and a peace treaty.

PS: The map used in this article is posted in the book review section.