If an ordinary person wishes to acquire Chakra, they only need a ninja to inject a small amount of Chakra seeds into them and teach them the Chakra Extraction Technique, and they will soon be able to extract Chakra on their own.
The biggest difference between ninjas and ordinary people lies in the number of cells in their bodies.
Those with ninja talent possess several times more cells than ordinary people, which means they naturally have much greater Chakra reserves.
This difference allows ninjas to perform more Ninjutsu, whereas the Chakra within an ordinary person's body might not even be sufficient to cast the most basic Ninjutsu.
With the advent of the Ninja Aristocracy era, the nobles, in order to obtain more Chakra,
began transmitting Chakra to all the commoners under their rule, at least ensuring that everyone could extract Chakra.
Although these commoners could not become a true ninja army, they could serve as living batteries and energy reservoirs, with their Chakra collected as taxes by their lords.
Alternatively, it could be used to provide cultivation resources for those with talent.
Thus, supported by hundreds of millions of people, the number of regular ninja forces in the Ninja World rapidly expanded from fewer than 500,000 to more than 8 million in just a few years.
Fortunately, on Nightmare Xiao's side, although there was a shortage of manpower, she possessed an enormous Undying Army as her foundation.
As a result, there was no major numerical disadvantage between the two sides. In fact, Nightmare Xiao's army even appeared to outnumber the ninja forces.
However, the unique nature and relatively weaker individual combat ability of the Undying Army also made them the primary targets of the ninja forces.
Fortunately, members of the Undying Army could not truly die and were capable of continuous regeneration, a trait that constantly gave the ninjas headaches.
Both the Ninja and Magician professions possessed comprehensive power systems that allowed balanced growth in physical ability, mental strength, and energy.
Therefore, when confronting unfamiliar enemies, they only needed a short period of study before discovering effective counters.
Just as Nightmare Xiao defeated Sea King Xiao, whether they were ninjas or Magicians, after fighting the undead for some time, they quickly found effective methods to counter them.
For example, using Genjutsu or Sealing Techniques against the undead were both excellent choices.
However, against these immortal ordinary soldiers, the most effective method proved to be Earth Release Ninjutsu.
Once large-scale Earth Release techniques were cast, vast numbers of undead would be buried underground, completely unable to escape.
Fortunately, among the Magicians were many Earth Mages proficient in earth magic, who could rescue the buried undead forces.
Thus, both sides fought fiercely, with countless Ninjutsu and spells flying across the battlefield as they continuously searched for each other's weaknesses and launched counterattacks.
This battle lasted for a full two and a half years.
Ultimately, because the ninja side's top-tier combat power was somewhat lacking, they gradually began suffering repeated defeats at the hands of the Magicians.
In particular, the Magicians' Slayer Magic displayed astonishing power.
This included Dragon Slayer Magic, Demon Slayer Magic, God Slayer Magic, and many others.
All Slayer Magic shared one terrifying characteristic:
they could devour attacks of the same attribute and convert them into their own strength.
In other words, once someone mastered this type of magic, they were practically invincible against opponents using the same attribute.
When facing Slayer Magicians with such abilities, there was almost no effective counter except Taijutsu.
Any same-attribute magical attack would simply be devoured by the opponent, while the Slayer Mage could continue bombarding the enemy with powerful spells.
Of course, the high-ranking ninjas were not to be underestimated either.
The greatest advantage of every top ninja was their versatility.
Every Jonin-level expert had mastered multiple Chakra nature transformations.
This was precisely to deal with opponents such as Slayer Magicians, whose resistance rendered a single attribute ineffective, allowing them to flexibly switch to different Chakra natures during battle.
Moreover, although the ninja side's top-tier combat power was slightly weaker, their greatest advantage lay in their ability to continuously summon reinforcements.
After capturing large numbers of Magicians as sacrifices, Orochimaru used the Impure World Reincarnation Jutsu to summon powerful heroes from Ninja World history back from the Pure Land.
The God of Shinobi who brought peace to the chaotic era—Senju Hashirama.
The Asura of the Ninja World—Uchiha Madara.
The man who single-handedly fought the Eight-Tails and battled ten thousand ninjas for three days and three nights—the Third Raikage, A.
The creator of Dust Release—the Second Tsuchikage, Mū.
The Mirage—the Second Mizukage, Gengetsu Hōzuki.
...
Countless legendary heroes of the Ninja World were awakened from the Pure Land.
Like lions that had slumbered for ages, they immediately threw themselves into fierce battles against the Magicians upon their resurrection.
Not only had these Impure World Reincarnation shinobi regained the full strength they possessed in life,
but because they now inhabited the bodies of Magicians, they could directly draw upon natural magic power, allowing their combat strength to increase even further.
With the addition of these legendary ninja heroes, the battle situation stabilized once again.
As the lower-ranking soldiers on both sides were nearly annihilated, the war entered an even more intense stage, becoming a contest fought almost entirely by top-tier powerhouses.
Both Xiaos personally joined the battlefield.
Every day, countless people injected Chakra into Sho Uchiha's eyes.
Even if Sho did absolutely nothing and merely allowed the Chakra to nourish them, his Eternal Mangekyō Sharingan continued evolving and growing stronger.
When Sho activated his Perfect Susanoo and rampaged across the battlefield, almost no one could stand against him.
Even Uchiha Madara's Perfect Susanoo was significantly inferior to Sho's.
Meanwhile, Nightmare Xiao transformed into the Queen of Succubi.
After absorbing the essence of tens of millions of people, she reached an unprecedented level of power.
Her physical strength became unimaginably terrifying.
Every movement could split mountains and shatter the earth, simply because the essence of tens of millions had accumulated within her body.
It would not be an exaggeration to call her comparable to a goddess.
However, what was even more terrifying was her beauty.
Her unparalleled charm meant that every glance and every smile could make people lose themselves, willingly becoming her loyal servants and even dying for her.
Countless ninjas fell under Nightmare Xiao's influence.
Her charm, comparable to Kotoamatsukami, caused many ninjas to avoid even looking directly at her, fearing they would instantly fall under her control.
As the leaders of both sides personally entered the battlefield, the fighting within the Great Firmament Arena became even more intense.
The two Xiaos finally clashed head-on for the first time.
Their confrontation also signaled that this Da Luo Duel was approaching its conclusion, with both sides fighting with everything they had.
The battle lasted for an unknown length of time.
No one cared about something as insignificant as time anymore.
The only thought remaining in everyone's mind was to kill the enemy before them.
Nightmare Xiao and Sho Uchiha also entered the final stage of their duel.
However, after such a prolonged battle, Sho Uchiha had become physically and mentally exhausted, and traces of fatigue began to appear on his face involuntarily.
(T/N: Note nightmare Xiao was a man but his succubi nature became so strong he ended up turning into a woman.)
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