First, Beelzebub stabbed Mazuru in the back, and then after he devoured Mazuru, it was Mazuru who came out of the blood-red cocoon. Things changed so fast that even Yamamoto didn't have time to process it easily.
It wasn't until he heard Mazuru's words that he came back to his senses, looked at Mazuru in front of him, and said in an extremely indifferent voice, "Accepting the power of hollows? Kyo Mazuru, how low you have fallen!"
Although he didn't understand the process, in the end, he could still see that Mazuru and the arrancar named Beelzebub had merged into one.
For this kind of thing, in the Soul Society, there was another term, called "Hollowfication".
About the hollowfication incident, which caused the disappearances of all those souls that year, after Aizen betrayed, Kisuke and others were whitewashed from that guilt. Especially during the battle in Karakura Town, those captains and vice-captains who were persecuted by Aizen showed up to fight against him, and so, for today's Soul Society, this was no secret anymore.
The principle is to pour hollows's soul into a shinigami's soul and try to sublimate the target to a higher level of soul by destroying the boundaries between souls.
There were two conditions to get and use hollowfication.
First, one must possess a huge amount of reiatsu, at least vice-captain-level and above reiatsu, otherwise, they would be swallowed by the instable reiatsu brought by hollow.
Second, one must meet his hollow-self in his body and defeat it. These two conditions were indispensable, otherwise it was impossible to successfully hollowfy.
Although Beelzebub was an arrancar and the leader of Espada, in the final analysis, he was also a hollow.
He swallowed Mazuru, a shinigami, into his body, and in turn, it could be seen that he merged into Mazuru's body.
This undoubtedly provided the second condition for achieving hollowfication, there was now a hollow inside Mazuru's body, as long as he defeated it, he could master the power of hollow and complete his hollowfication.
As for the first condition, having a huge amount of reiatsu.
For Mazuru, it could not be said to be even a condition.
However, although it could be seen that Mazuru has accepted hollow's power and carried out the hollowfication, Yamamoto still had doubts in his mind.
Did Beelzebub devour Mazuru before, only to be suppressed by Mazuru in turn, or did Beelzebub voluntarily dedicated his life for Mazuru and became his strength?
If it was the latter, why was an arrancar, that too the head of the Espada, such a powerful entity, willing to sacrifice for Mazuru?
"Fallen? I don't think so."
Mazuru responded to Yamamoto.
"In your opinion, who was Beelzebub? Was he a hollow? A hollow who was arrancarized? And now, that I have accepted his power and merged with him, you think I have opted hollowfication and voluntarily gave up the glory of being a shinigami and so and so…?"
Mazuru asked questions Yamamoto one after another.
Without waiting for Yamamoto to respond, Mazuru took the initiative to answer these questions himself.
"You don't understand."
"Beelzebub, he was originally a part of me from the beginning."
"Right now, I'm just taking back the power that I've separated all those years ago back into my body."
This was also the reason why he valued Szayelaporro very much at the beginning. Even if he killed Szayelaporro, he kept his body with him all the time. Because his own soul was incomplete.
But after so many years, with that part of his soul occupying a dominant position in Metastacia's body, and then evolving into Beelzebub step by step, it was not so easy to take this part of the power back into his body and integrate it without any problems.
After all, there were all kinds of strange hollows in Hueco Mundo, and they had all kinds of strange abilities.
Just like Szayelaporro's Gabriel.
It was an ability to devour all the power of the target and all the nutrients in its body, and then create a new body for the caster itself.
For Szayelaporro, it's a means of fighting the enemy.
But from Mazuru's point of view, it was a way for him to take back the power he had divided without any risks or problems.
After Beelzebub devoured Szayelaporro's body, he possessed Szayelaporro's Gabriel.
Then, with the help of that same techinique, Mazuru's body was devoured, and at the same time, Beelzebub's body belonging to category of hollow was decomposed.
The two divided souls reunited as one.
Then, in the old body where Mazuru and Beelzebub were mixed together, with the ability of Gabriel, all the spiritual power was extracted to create a brand new body out of thin air.
Yamamoto didn't understand the process, and neither did the other arrancars of Hueco Mundo.
But they all heard Mazuru's words.
Especially for those arrancars, it was even more of a shocking fact.
Beelzebub, the head of Espada, turned out to be a part of Mazuru.
They have all seen the power of Beelzebub.
Such a powerful arrancar is only a part or maybe a half of Mazuru?
The shinigami side doesn't know when Beelzebub was born though.
But after learning the fact after his partition of power, they soon realized a certain reality.
"Then you… In the fight in Las Noches earlier, and you even before and after that, only have been fighting with half of your power?" Byakuya couldn't help clenching his fists, his nails were deeply embedded in the flesh, and his complexion was extremely bad.
"Even if the you in front of us is your complete vessel, even if the arrancar is a part of power you had split off, it is a given fact that your Zanpakuto had been destroyed in the state of Bankai."
Yamamoto who was silent all this while, spoke to Mazuru.
"Zanpakuto?"
Mazuru raised the broken sword in his hand, and a strange smile formed on the corner of his mouth.
"In your opinion, what is Zanpakuto?"
"Isn't it just the manifestation of shinigami's soul? So if the sword is destroyed, shinigami can't exert the ability of Zanpakuto, right?"
Mazuru's tone changed again, "Sadly, that's only aimed at you people."
"For me, Zanpakuto is nothing more than a vessel for the realization of my power into reality."
Before he awakened Zanpakuto all the way back then during his life in Hueco Mundo, he already had the ability to devour spiritual energy.
Then his Zanpakuto was awakened after he learned Sword Zen and got his hands on an asauchi, and several of his abilities became stronger.
But as another part of the soul merged into the body, the boundary was broken in an instant, and after the power reached an unprecedented level, Mazuru also understood part of the truth.
The so-called Zanpakuto was nothing more than the power that already exists in his body, following the laws of this world, looking for a carrier, a name, and manifesting it.
His soul was not a soul of this world, and his power does not originate from the rules of this world.
While speaking, Mazuru casually threw away the broken sword in his hand.
Then, he pulled out another sword from his waist.
This is Beelzebub's Resurrección blade.
"Sword... Liberation"
Mazuru released his sword.
The crimson enchantment reappeared, covering the world.
He looked at Yamamoto whose complexion changed drastically, and had an extremely ugly expression and said, "Look, don't my abilities still exist?"
*****
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