From Demon Slayer: Thunder Swordsman

In Kujo Tachibana's perception, the concentration of spirit particles in the area where he had just entered the Hueco Mundo was about 1.5 times that of the Seireitei, while the concentration of spirit particles in the barren mountain he observed at this moment was three times that of the Soul Society.

However, the barren mountain here already has an owner.

A great hollow that is about to undergo a transformation - Killian!

...

Looking at the Killian in front of him, who was slowly transforming into a higher-level Hollow - Achukas, Kujo Tachibana did not try to stop it, but just watched the scene quietly.

-

In the Hueco Mundo, Hollows have different types and levels, which can be roughly divided into four categories.

The first type: low-level Hollows, which are the most common Hollows. They have almost no intelligence, cannot dodge, and have weak attack power. A few low-level Hollows have super-speed regeneration. They can only threaten basic humans. If they encounter Shinigami and Quincy with high spiritual pressure, they will just be killed and exhausted.

In addition to basic combat forms such as head-on combat, they can also spit out some corrosive liquids to attack. They are the lowest level and most common existence in Hueco Mundo.

The second type: Killian, Hollow.

Killian was created after devouring hundreds of low-level Hollows and fusing them. Big Hollows rarely appear in the early stages and can be understood as the team leader level among Hollows. Generally, a deputy captain level Grim Reaper is required to deal with them.

Gillian's Hollow's defense has been significantly improved. Due to his tall and sturdy figure, ordinary sword attacks will not cause much damage to him. The Hollow's signature attack is the red flash, and its attack power and attack range should not be underestimated.

Judging from his performance in the plot, he seems to have no ability of language and only possesses the most basic instincts - killing and evolution. Although his strength is not weak, overall, he is only at the level of a thug in Hueco Mundo and cannot be on the stage. He is the cornerstone of Hueco Mundo.

But there are also a few special Killians who will be born with intelligence and have their own consciousness. And often only these special Killians will have the qualifications to evolve to a higher level of virtual "Yachukas".

And the third type is the Yachucas.

Achukas are generally medium-sized Hollows, and can be said to be rare strong ones in Hueco Mundo. Usually only the Gotei 13 or the captain-level Shinigami can kill them. The evolution of Achukas is very similar to Killian.

It is also a product that needs to devour hundreds of its own kind and fuse their strength and spiritual pressure. Before it was transformed by Aizen, Achukas was mostly in animal form and could use weapons. In battle, it focused on its special abilities, speed and Void Flash.

The fourth type, and also the highest level existence in the Hueco Mundo at this time, is Vastrode!

Vastod can almost be said to be the strongest Hollow. They are the real strong ones in the Hueco Mundo. These Vastods who have undergone multiple rounds of evolution have almost reached the ceiling of "Hollow" evolution. Ordinary Death God captains may not be able to deal with them.

The basic combat power is equivalent to the level of "Elite Death Captain", and the flash is called "King Xu's Flash", the power...

Well, it’s comparable to the Tailed Beast Balls in the Naruto world!

And Vastrod also has powerful super-speed regeneration and hard iron skin.

After meeting Aizen who was transformed into an Arrancar, he could still maintain his human form in daily life, use weapons such as swords, and learned to concentrate his strength to fight, similar to the transformation of a Hollow into a Death God.

After becoming an Arrancar, Vastode's strength increased exponentially. He can be said to be an elite in Hueco Mundo. Of course, Aizen has not yet ruled Hueco Mundo. Some Arrancar that will appear in future plots may still be just an ordinary Gillian at this time.

In Kujo Tachibana's memory, the most powerful "Vastod" in the Hueco Mundo at this time should still be the Bylergan Luisen Gang that rules the Hueco Mundo!

Vastod, who has mastered the terrifying ability of "aging", was easily defeated by Aizen in the play, but Kujo Tachibana feels that this guy's actual combat power should not be weaker than Unohana Retsu, and it is possible that he is even stronger.

There is also a self-propelled Arrancar named Vashtod, who is also very powerful. Aizen even believes that he is more powerful than the ruler of the Kuraya Palace, Bylergan.

But this guy seems to be rather indifferent. Although he has mastered terrifying power, he just wanders aimlessly in the Hueco Mundo all day long.

According to the introduction of the anime Bleach, when Stark was in Hueco Mundo in the early days, because he was too powerful, any weak Hollow who got close to him would have their souls automatically consumed and die. Therefore, he had no companions and traveled alone in Hueco Mundo.

In order to find a powerful companion who could stay with him and not be weakened and die, and also to get rid of loneliness, Stark split his soul into two individuals, Stark and Lilinette.

Afterwards, Stark and Lilinette met Aizen in the desert and were recruited as one of the Ten Espadas. At the same time, Stark was one of the only two Hollows among the Ten Espadas who could form their own Arrancar, the other being Ulquiorra.

But it is said that above Vastod, there is a higher level existence - Scritto!

Scritto - a super advanced Hollow, almost at the top of Hueco Mundo, but information about Scritto is still shrouded in mystery. It is said that he has the strength to capture the Gotei 13 alone.

The conditions for the creation of Scritto: All we know is that it was created by the mutation that occurred when Achucas evolved into Vastod. According to data, in the countless years of history of Hueco Mundo, only three Scritto-level Hollows have been born.

Scritto is the most powerful Hollow. In the Bleach anime, when Ichigo Gyuto transformed into a Hollow, he not only had the power of Vastrode, but also had the strength of Scritto at a higher level. His Fiery Hollow Flash was beyond the reach of Koyata Stark.

-

Jiujo Ju carefully watched the transformation process of the Killian in front of him and began to think silently.

Can he master the power of the god of death and the power of the hollow at the same time?

That is the virtualization of the god of death!

In the anime Bleach, although the Shinigami and the Hollows absorbed the same energy called Reishi, they developed two completely opposite powers.

The protagonist of the original anime, Ichigo Kurosaki, is a young man who possesses both the "power of Hollow" and the "power of Death".

After a Shinigami has mastered Hollowification, it is like a Hollow completing an Arrancar. It does not mean that the level of the realm will be higher, but Hollowification or Arrancar can raise one's spiritual pressure to a new level.

However, this matter cannot be rushed, and Kujo Tachibana also has enough time to conduct experiments in the Hueco Mundo.

Chapter 18 Elsa

After waiting quietly for several hours, Jiu Tiao Ju knew what was going on as he watched the Killian in front of him gradually transform into a giant wolf two meters tall with silver-white hair.

This Killian has completed its evolution and become an animal-shaped Achukas.

...

With her eyes fixed on the strange being in front of her, Elsa Kaslana did not dare to act rashly. She just slowly began to retreat backwards with her limbs.

"Hmm? You're not going to come and devour me?"

"It seems that your intelligence is not low... and you have a keen sense of perception! Can you feel my spiritual pressure?"

Jiu Tiao Ju, who asked this question, raised his leg and slowly walked towards the giant silver-white wolf in front of him.

Elsa's expression suddenly tensed, and she opened her wolf mouth full of fangs and began to sob softly.

"Don't come here!"

"If you move forward, I will fight you..."

Although he couldn't understand the wolf's language, Kujo Tachibana still understood what the giant wolf in front of him meant through his spiritual pressure and infinity.

Seeing this, Jiujo Tachibana stopped and smiled gently, then said through the spirit particle communication method:

"My name is Kujo Tachibana, you don't have to be afraid, you can call me "Tachibana" I'm different from you, I don't need to evolve by absorbing your spiritual pressure."

The information that suddenly came to her mind scared Elsa so much that she turned her wolf head and looked around.

Although Erza awakened part of her human consciousness during the Killian period, she has lived in the Hueco Mundo for hundreds of years after all.

Moreover, during these hundreds of years, Erza had never communicated with other self-aware Hollows. All that remained of her past memories were fighting and devouring other Hollows that were weaker than her.

Even though she had evolved successfully and separated from Killian's body, Elsa was still a little uncomfortable with the process of being able to communicate normally with other intelligent creatures.

...

Jiujo Ju was not in a hurry. He just patiently looked at the giant wolf in front of him and taught it for a whole day. Finally, this young "Yachukas" mastered the abilities that it should have mastered.

That is, the ability to communicate with other intelligent creatures!

"My name is Elsa, Elsa Kaslana!"

Hard work pays off. Seeing the giant wolf in front of him finally speaking human language, Jiujiao Ju breathed a sigh of relief.

"Thank you, Ju! You not only taught me how to speak, but also made me remember a lot of things." Elsa's words became more and more fluent.

However, the melancholy look in its wolf eyes did not show how happy it was.

"What's wrong with you? Aren't you happy about evolving from Killian to Achukas?" asked Kujo Tachibana curiously.

Elsa simply lowered her wolf head and whispered, "It is only our instinct to evolve to a higher level of Hollow, but this does not mean that I like this way of life or this world. In the memory I just got, there are many scenes..."

"There are green plants, blue lakes...all kinds of creatures living in them. The world shouldn't be like this, always gray...sand and pebbles..."

Upon hearing this, Jiujo Tachibana was stunned.

At this moment, he felt like a stupid student suddenly turned into a philosopher.

After Killian completed his evolution, did his self-awareness evolve so quickly?

At this rate, even if he had never appeared, it wouldn't take long for Elsa to regain her self-awareness.

Shaking his head, Jiujo Tachibana didn't think about it, just looked at Elsa and said:

"Erza, are you willing to follow me? There shouldn't be too many beings with self-awareness in Hueco Mundo, right?"

"If we can communicate with each other, we won't be too lonely during our days in Hueco Mundo. And I can give you the Hollows I killed to absorb."

Elsa didn't hesitate and nodded directly.

In fact, even if Kujo Tachibana didn't say anything, she would still follow him.

Erza herself couldn't stand living alone in the Hueco Mundo. Before, her self-awareness was weak and most of her consciousness was instinctive. Now that Erza has regained consciousness, she naturally hopes to communicate with others from time to time.

"Where are we going?" Elsa looked at Kujo Tachibana and asked curiously.

"Don't worry, Elsa, wait a minute." After saying this, Kujo Tachibana did not explain the specific reason, but just put all his strength into practicing Breathing Method 4.0...

“Whoosh…whoosh…”

A strong wind suddenly roared up, sweeping up the sand and spirit particles in the air. In just over ten seconds, a tornado with a diameter of tens of meters formed around Jiujouju and the giant wolf Elsa!

The invisible spirit particles rushed towards Kujo Tachibana's body like a storm.

Feeling the concentration of spirit particles around Kujo Tachibana's body, Elsa couldn't help but start to smack her lips. No wonder he said that he didn't need to evolve through swallowing.

The speed of absorbing spirit particles is much faster than that of devouring other great voids!

One day, two days...until the third day, this thick tornado began to gradually shrink. After feeling the concentration of spirit particles around it gradually approaching the average concentration of the Hueco Mundo, Kujo Tachibana adjusted the power of his breathing method back.

Even if the concentration of spirit particles around him returned to the average value of Hueco Mundo, he could still increase the efficiency by maintaining the previous absorption speed, but Kujo Tachibana did not want to do that.

First, the noise was too loud.

Second, if he maintained this breathing method at full power, he would not have the energy to do anything else.

Moreover, it didn't take him much effort to find this place. Doesn't this just prove that similar places are not uncommon in Hueco Mundo?

Since there is a place with twice the concentration of spirit particles as Jinglingting, why can't there be a place with three or four times as much as Jinglingting?

So just leave after sucking, change place after each shot, and move to another place when you reach the average value. And you can't suck the Jiujiaoju too dry, otherwise.

If the concentration of spirit particles is too low, it will also affect the surrounding "residents". As mentioned in the previous article, the three realms are one. The Hollows in the Hueco Mundo are also transformed from souls in the real world. If serious damage is caused to the Hueco Mundo, the real world and Soul Society will also be affected.

...

Looking at the gradually weakening tornado around him, Jiujo Tachibana only said softly: "Elsa, let's go."

But at this moment, Elsa jumped up, came in front of Kujo Tachibana, and crawled on the ground on her own initiative.

"Ju, can you sit on me? I can carry you on your way."

"The closer I am to you, the faster I absorb the spirit particles. Although most of the spirit particles are still absorbed by you, it is still much faster than my normal absorption speed."

Jiujo Tachibana just smiled and nodded, then jumped onto Elsa's back which was covered with soft wolf hair.

You know what, Jiu Tiao Ju feels pretty comfortable lying down...

As for the little bit of spiritual energy that Elsa absorbed, Kujo Tachibana didn't care at all, it was just a drizzle.

Immediately afterwards, Elsa carried Kujo Tachibana on her back and headed towards the next area with high concentration of spirit particles that Kujo Tachibana sensed.

Chapter 19: Bankai Second Level

Through subsequent communication, Kujo Tachibana also learned that Elsa actually possessed a strange "innate ability".

You know, apart from the racial abilities that they should possess, such as controlling lower-level Hollows, opening black cavity channels independently, and being able to launch Hollow Flashes and Hollow Bullets, generally speaking, Yachukas and Killian will not awaken other special abilities.

But Elsa is an outlier. During her Killian period, she possessed a special ability that even Kujo Tachibana found difficult to explain.

To sum it up in eight words, it is - "seek good fortune and avoid disaster, and sense misfortune and blessing"!

Although this ability cannot increase Elsa's combat effectiveness, it allows her to survive safely during her long "Killian" career.

And eventually evolved to the level of Yachukas.

This is why, when she first saw Kujo Tachibana, Elsa could sense the danger. If she took the initiative to attack, Kujo Tachibana would indeed kill Elsa without mercy...

In Kujo Tachibana's cognition, this is already a kind of power that involves the rules of fate and cause and effect. If Elsa is given enough time to grow, Kujo Tachibana believes in Elsa's future abilities.

It will never be lower than the Ten Espada members that appeared in the original work.

Thinking of this, Kujo Tachibana suddenly felt that he could use the black cavity to randomly come to the vicinity of Elsa in the vast virtual circle. Could this also be affected by her ability?

Or was it that Elsa was influenced by this ability and took the initiative to go to that place, waiting to meet him?

Is this a destined bond between the two?

...

Lying on the wolf's back, Jiu Tiao Ju looked at the gray sky above and asked curiously: