Most Shinigami's Bankai require knowing their names in order to be released through their master's words.
A small number of people do not need Bankai. These people have strong Spiritual Power and happen to encounter a potentially fatal crisis. At this time, the Zanpakuto will use the master's powerful Spiritual Power to materialize in this world and help the master.
For example, Sōya Azashiro's Zanpakuto, Urozakuro.
From his Shikai to his Bankai, he didn't know the names of his Zanpakuto, yet he was still able to unleash its power thanks to the Urozakuro.
Kenpachi Zaraki also didn't know the name of the Bankai, nor did he remember what happened around him when he used Bankai.
However, he can still use Bankai, through the Yachiru Kusajishi.
" Yachiru!" he shouted, slashing his sword to cut through the dense Heilig Pfeil, avoiding the stone waves formed by the black nerves invading the building.
The only lucky thing was that the inhabitants inside were knocked unconscious by the Reiatsu and couldn't feel pain.
" Yachiru!"
Kenpachi Zaraki continued shouting, then struck Ishinami with a heavy blow, before managing to escape before the black nerves could cover him.
Pernida's neural responses are getting faster and faster.
" Yachiru!" he called again. Without silence, a long-lost little girl jumped onto his shoulder, seemingly never having left, " Ken-chan ~"
"Let me Bankai!"
Kenpachi Zaraki shouted.
Yachiru Kusajishi looked troubled, then looked up. The sky was blue, just like it had been back then.
She stayed by Ken-chan's side the whole time, but she only really showed herself during that battle when Ken-chan had hundreds of enemies, and the scene was littered with corpses.
Because the Ken-chan Reiatsu too powerful, she did not have Shikai, but she still gained the power to materialize this world.
At first, no one except Ken-chan could see her, but gradually, as she absorbed more and more Reiatsu from Ken-chan, even those around her could see her appearance.
She wanted Ken-chan to have a name, but she also wanted to hear the name that truly belonged to her.
" Ken-chan, if you use Bankai now, you might be controlled by the enemy."
"I will stay rational and won't act like I did yesterday!"
Kenpachi Zaraki gave a positive answer.
What can be accomplished in such a short time, like yesterday and today, which is not the year before last and this year?
Yachiru Kusajishi wanted to retort, but seeing Ken-chan's serious expression, she helplessly said, "The person I want to protect the most is Ken-chan, but what Ken-chan wants is to fight, right? Then please don't die."
The berserk power of Bankai flowed along the hilt of Nozarashi into Kenpachi Zaraki's body, his blood boiling. It was the power that had left this body for so long, returning once again.
"Aaaaaah!"
Kenpachi Zaraki roared, and with just that, the sound waves he emitted shattered the nerve-controlled stone waves, and even scattered the Heilig Pfeil.
Reishi fled in panic from the beast.
Pernida asked in a playful tone, "Is this your Bankai?"
"That's right."
Kenpachi Zaraki struggled to suppress the urge to destroy everything. His skin turned blood red, and his forehead itched, presumably due to the extra sharp horns.
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It seemed as if some eyes were shedding tears; those were black patterns formed from liquefied Reiatsu.
"Do you still have any sense?" Gin Ichimaru asked from afar, his expression wary. The original Zaraki was terrifying enough, but the current Zaraki had become a demon from a story, which could be described as ferocious and terrifying.
"Yes!" Kenpachi Zaraki roared, his intense urge to destroy unable to be suppressed any longer. He raised his seemingly broken sword and swung it forward.
The crimson slash tore through the air forward, and Pernida used the same old method: reinforced buildings to form a shield in front of it.
Boom! It couldn't be stopped for even a second; even the black nerves on it were torn apart by the slash.
"Ah!" Pernida let out a painful scream as the information gathered by her nerves once again caused her body to begin evolving.
Before he had even finished evolving, Kenpachi Zaraki rushed forward at a speed too fast for his nerves to react to, and swung his broken sword.
Blut Vene.
Tree-like patterns appeared on Pernida's body as she was torn apart by that broken blade, blood splattering outwards.
Kenpachi Zaraki swiftly drew his sword, circled around, and with two more consecutive strikes, cleaved the other two hands apart.
"Ahh!"
The Reiatsu surged dramatically, Pernida's body, which had split in two, began to coalesce once more. "This level of power is insufficient to kill me!"
Swish.
Kenpachi Zaraki swung his sword once, and the violent Reiatsu sliced Pernida into countless pieces of flesh. With his two eyeballs still moving, all the pieces of flesh condensed into a ball, transforming back into that left hand, its surface covered in tree-like patterns.
"Fantastic!" Kenpachi Zaraki laughed wildly.
Chirp.
A finger, like Shinsō, suddenly extended and pierced through Kenpachi Zaraki's left shoulder, spreading through his nerves and causing his left arm to twist directly.
Kenpachi Zaraki unfazed, slicing off the left shoulder with ease. Blood spurted out, his destructive urge growing increasingly uncontrollable. "Hahaha!"
He pushed off with his foot and rushed forward.
"Hahaha." Pernida let out a laugh similar to Kenpachi Zaraki, and his five fingers stretched forward at a speed surpassing that of the Kamishini no Yari, black nerves covering the flesh beneath his skin.
Once he encounters Kenpachi Zaraki, an even larger nerve mass than before will flood his body, and he will then control this strongest body to begin annihilating the Shinigami.
Gin Ichimaru seized the opportunity, used Shunpo to the side, and aimed the Kamishini no Yari at the eye through the gap between his fingers.
A white light pierced out, and tree-like patterns appeared in Pernida's eyes, as she prepared to use her Blut Vene to fight head-on.
The strategy was to first take down Kenpachi Zaraki, and then deal with Gin Ichimaru.
Pernida sensed that the plan had failed; he was indeed evolving, Kenpachi Zaraki had also failed to fully exploit his potential.
No one knows the limits of Kenpachi Zaraki, not even himself. Only in the most intense battles can one understand that he has not yet reached his limit.
Blood spurted from his hands and feet, and his body couldn't withstand the power of Bankai. But unlike yesterday when he was unconscious, he was conscious and wasn't affected by such a minor injury.
He accelerated and circled around, rushing behind Pernida and leaping up to slash down with his sword.
Pernida's Blut Vene was immediately shattered, and her counterattack was incredibly fierce. Her evolved black nerves pierced through Kenpachi Zaraki's body, and she no longer had any intention of controlling him; her mind was filled with nothing but killing.
The nerves were sore that Kenpachi Zaraki was bleeding profusely, and Pernida wanted to devour the man whole.
Gin Ichimaru's Kamishini no Yari pierced his eyeball. Due to the Blut Vene on his head, the defense of his eyeball was weakened, but it didn't matter. Such a small wound would heal in an instant.
Gin Ichimaru sheathed the Kamishini no Yari; another piece was missing from the blade. Its inability to heal itself was truly troublesome. "Shoot it, Kamishini no Yari!"
boom.
Pernida's eyeball was instantly reduced to a gaping hole; the cytotoxic poison dissolved nerves and cells, turning them to ashes in a flash.
Is he dead?
Gin Ichimaru was somewhat uncertain.