Let's return to the original question.
"You mentioned conducting a ritual, but how exactly should it be done?" Rozen, as if speaking to himself, ignored the terrifying presence and magical fluctuations emanating from the being that had taken over Nagisa's body before him.
"The essence of the ritual is to usurp the accumulated time from individuals who have transformed into pseudo-vampires and those associated with the Fourth Primogenitor, to construct the blood memories of the Fourth Primogenitor, allowing the Fourth Primogenitor to possess latent magic power surpassing the other three Primogenitors. But what comes next?"
The substantial accumulated time flows to the twelve matrices, enhancing their magic power, a well-known fact. But what steps should be taken to awaken and resurrect the Fourth Primogenitor?
"I initially thought that the matrices would be liberated next, then engage in mutual combat. Through cannibalizing each other, they would absorb the power and beast vassals of the remaining matrices, akin to nurturing insects, continually repeating the process until only one of the twelve matrices remained, who would then possess all the power and beast vassals of the Fourth Primogenitor, ultimately awakening as the Fourth Primogenitor and being resurrected in this world."
Rozen stared directly at the other party.
"However, upon learning of your existence, I reconsidered."
If that were the case, then what kind of entity emerged from the seal of Avrora?
It couldn't possibly be unrelated to the Fourth Primogenitor, right?
"Then, I thought of something."
Rozen calmly pointed out an issue.
"If the legend is true, the original Fourth Primogenitor was torn apart out of fear by the Devas, its body and power divided into twelve parts, becoming the twelve matrices, sealed in various locations worldwide. So what happened to the original Fourth Primogenitor?"
The body of the Fourth Primogenitor had been torn apart into twelve pieces; even Zaharias had stated that it was used to create the twelve matrices, indicating that the body of the Fourth Primogenitor had long been gone.
But what about the soul of the Fourth Primogenitor?
Had it dissipated?
Gone to hell?
Ascended to the heavens?
Or, along with the divided body, was it sealed away?
"After considering this, I understood."
Rozen unveiled the truth.
"The soul of the Fourth Primogenitor was sealed within Avrora, within the twelfth matrix known as 'Kaleid Blood'."
Hence, while the other eleven matrices were sealed worldwide, Avrora's matrix was sealed in the oldest Demon Sanctuary—Gozo.
"And since the seals of the other eleven matrices have been completely broken, the spirit of the Fourth Primogenitor sealed within the last matrix has also awakened. After who knows how long, it finally awaited the opportunity for release."
This opportunity came with the appearance of the investigation team led by Gajou and Liana.
"Unfortunately, they lacked the ability to break the seal of the relic and couldn't bring out the last matrix from the underground tomb."
For this reason, when Nagisa, an exceptional spirit medium capable of communicating with spirits, appeared, the spirit of the Fourth Primogenitor immediately guided her to break the seal.
"If not for this, even if Nagisa's medium ability were exceptional, she wouldn't have been able to succeed in communicating with spirits all at once or breaking the seal, which even the joint investigation team formed by the Warlord Dominion and the Japanese government couldn't deal with."
And if all of this is seen as someone actively guiding and coordinating, then it all makes sense.
"So, under the guidance of the spirit of the Fourth Primogenitor, Nagisa successfully broke the seal and directly entered the ruin while in communion. Ultimately, she touched the seal of the ice, allowing the spirit of the Fourth Primogenitor within the ice to detach from the slumbering body of Avrora and enter Nagisa's body, causing her immense burden. She was taken to Itogami Island, her body continuously weakening. If not for this random divine child suddenly appearing and understanding soul suppression and exorcism, almost annihilating him, he would have continuously drained Nagisa's physical and spiritual strength until he could possess her body, resurrect, and gradually recover the matrices' power during the banquet, allowing his strength to return fully, and finally awaken?"
Rozen looked at the girl in front of him with a smile that wasn't quite a smile.
"So, how should I address you?"
"The Fourth Primogenitor."
Upon hearing this, the vampire Primogenitor occupying Nagisa's body revealed a cold smile, as if encountering an enemy.
"Yes, it's indeed inconvenient to have no name. Let me use that alias."
Which alias?
Naturally, it's the name given by the team including Akatsuki Gajou and Liana when the spirit of the Fourth Primogenitor was still sealed within the twelfth matrix.
"Avrora."
The Fourth Primogenitor reported this name.
"However, I am the original, the original Avrora."
The original Fourth Primogenitor.
The original Avrora.
This was the first alias used by the resurrected vampire.
"The original, huh?"
Rozen didn't express agreement or disagreement, but his gaze remained on the original.
Because...
"Leave Nagisa's body, Original."
Rozen commanded in a cold tone.
Naturally, this tone made the self-proclaimed Original Fourth Primogenitor quite displeased.
"Are you ordering me?"
The Original gazed at Rozen.
In its eyes, a pair of flames ignited.
The suppressed magic within it finally erupted.
"Boom!"
At this moment, the atmosphere roared.
The Original completely released the magic within it, turning it into pillars of gas that rose into the sky, stirring the clouds into a vortex, causing the earth to tremble continuously.
Once on the brink of being eradicated by Rozen, she, for self-preservation, had to manipulate Nagisa's body, break Avrora's seal, and take the magic from Avrora to regain her strength.
After that, the Original had been in constant conflict with Rozen, accumulating power while enduring Rozen's soul suppression and exorcism, and gradually building up strength through the unfolding ritual of the Blazing Banquet.
Upon closer inspection, all the magic that had flowed to the nine matrices lying in the coffin had begun to flow toward the Original.
In this situation, the flames burning in the Original's eyes became brighter and brighter, and its jet-black hair began to emit light, like a rainbow, changing colors from different angles.
This was the true Fourth Primogenitor—Kaleid Blood.
From behind it, its uneven wings spread out.
They were vampire wings, like bats, with clawed hooks.
The wings were jet black, with four on the left and five on the right, nine in total.
They were all formed by magic but carried terrifying power in each one.
"Boom!"
With the thunderous sound of the atmosphere, the nine wings suddenly extended, like sharp knives, fiercely slashing towards Rozen, causing the earth to collapse.