A few days passed in the blink of an eye—
Because after leaving their main world, the time experienced by a group member does not align with their original world. No matter how long they are away, upon returning, only an instant will have passed. Even making a round trip right in front of others would go unnoticed.
Therefore, many group friends stayed here in Castlevania, choosing to linger for a few more days.
Especially since quite a few group members were curious about Rias's world, particularly the aspects referred to as demon civilization, culture, and so on.
Kuro Usagi was the same.
Although she hadn't made a final decision yet, she spent the entire few days conducting on-site investigations.
Bringing the noname members to the outside world was an extremely significant decision, even if they could return at any time.
Aside from that, like Sasha and Morgiana, the two were sent by Rias to the newly opened school in Castlevania.
Similarly, the school's teachers and leadership were also held by Rias's peerage, crimson butterfly.
They received comprehensive education ranging from basic mana manipulation, to combatant training, mana and magic development, various theoretical knowledge, the histories of different Pantheons, and cultural literacy.
The school did not distinguish between nobles and commoners, or even specifically between races, as long as one was humanoid.
Within the Underworld, the demon territory, many Non-demon Races also existed.
These people would receive twelve years of compulsory education.
Although it's called compulsory education, it wasn't entirely free in practice.
Many of the tuition, miscellaneous fees, material resources, and such were allowed to be deferred, to be repaid in the future when the demons grew up and gained the ability to support themselves.
After all, demons have long lifespans; even a Low-class Devil's lifespan far exceeds that of a human.
By the way, just the many conflicts erupting daily in Castlevania led to troublemaking demons being caught in batches, and to this day, not a single person has been released.
In the end, their actions would come back to bite them.
On the other hand—
Among the group members, three chose to stay.
Morgiana, Yasuri Nanami, Sasha.
Among them, Morgiana was the most normal child and was sent by Rias to school for learning.
Sasha was the same, but after obtaining Sasha's consent, Rias gave her an additional daily task.
That was to help Rias research the power of Small Universe.
Sasha may seem ordinary, but in fact, everything in the Saint Seiya world is composed of atoms—flowers, trees, grass, rocks, stars, galaxies... even the universe is no exception.
Fundamentally, all people in the Saint Seiya world are different from those in other worlds.
Moreover, even without being fully awakened, Sasha is still the reincarnation of Athena.
Rias didn't even need to go to the Saint Seiya world; just by observing Sasha daily, she could gradually understand and integrate the Saint Seiya system into Rias's unique system.
That system named 'Small Universe'.
In the Saint Seiya world, the universe was born from the Big Bang. The 'Will of the Gods', liberated by the Big Bang, collided with fragments of the universe, creating the stars shining in the sky, thereby forming the cosmic world where life could reside.
In other words, the Will of the Gods is the foundation of the Saint Seiya world.
The foundation of all things in the material world is the atom.
The foundation of Small Universe is shattering atoms.
The foundation of Small Universe lies within oneself.
No, it should be said, it lies within one's own Small Universe!
In Rias's system, there are two ways for the essence of life to grow stronger.
One is outward expansion.
For example, the concepts of Destruction, Omnipotence, create, life, Wisdom, and so on.
The other is inward excavation.
Observing the superpower of the tornado and excavating based on it had already reached its limit.
After clearly observing Sasha's special nature, using the Wisdom concept to accommodate it, and using the life concept to transform herself, Rias gradually acquired the essence of life from the Saint Seiya world.
The first five senses, the excavation of sensory perception, and the training of the body along with the cultivation to ignite Small Universe.
Upon understanding the essence of Small Universe, Rias instantly surpassed the first five senses.
The Sixth Sense was the same.
Rias already had deep research and excavation into the Sixth Sense. In just a few short days, Small Universe was deduced to an extremely high level, advancing towards the Seventh Sense.
The Seventh Sense is the essence of life, hailed as the ultimate Small Universe.
That is to say, generally, the Seventh Sense is the individual's limit.
Upon reaching the Eighth Sense, one transcends life and death, no longer bound by the external laws of life and death.
Simultaneously, the Small Universe of the Eighth Sense far surpasses the ultimate Small Universe of the Seventh Sense.
Because the Eighth Sense is already equivalent to a demigod.
The ultimate Small Universe has no more potential to excavate, so the Eighth Sense excavates the divine essence of Small Universe.
If the Seventh Sense is hailed as ultimate, the Eighth Sense is the foundation, that is, the origin.
Namely, the Alaya Consciousness.
As for the Ninth Sense... in reality, that is no longer the orthodox path, but the path of the cosmic root.
After reaching the pinnacle of the Eighth Sense, severing one's good thoughts, evil thoughts, and self, embracing the sensory perception of nothingness, entering an inconceivable state, and conforming to the path of nothingness.
This bears some resemblance to the'Severing the Three Corpses' in the Primordial Chaos genre.
On the orthodox side, there is no so-called Ninth Sense, but rather the 'Domain of the Gods'.
Legend says the Will of the Gods originates from the Old World.
That was a world destroyed by the formless, faceless great god, Kronos, and what remained were the fragments that constituted things.
The Will of the Gods can be said to be the essence of a god. For a god, even if they lose their divine body, divine authority, divine power, divine status entirely, even if their form and spirit are annihilated, and their primordial spirit no longer exists, they still will not die, only falling into a prolonged slumber.
Fundamentally, the Small Universe of the gods and the Small Universe of the Saint Seiya are already completely different things.
Beyond that, there is also the Ultimate Force (Dynamis).
The Ultimate Force, also known as the True Power of Gods, or directly called divine power, is the power possessed by the ancient gods who created the world. It is the chaotic power that composes everything in the universe. This power can cause the universe to expand infinitely, create and destroy all phenomena in the world. Small Universe, including the Ninth Sense, is merely its inferior product.
Regarding this, Rias only had a slight understanding; truly wanting to analyze it was still far off.
Even so, one cannot deny Rias's rate of progress.
Originally, after reaching the Dragon God Level, her progress had slowed down.
It was akin to seeing the vastness of the starry sky and adapting to the speed of a rocket, so she was no longer satisfied with the rocket.
Fundamentally, her rate of progress hadn't slowed; it just seemed less satisfying compared to the obvious progress before.
After Sasha's arrival, Rias plunged into a new round of cultivation.
Simultaneously, Rias also took the time to create a magical device that could help Yasuri Nanami.
Apart from that, Yasuri Nanami's rate of progress also greatly surprised Rias.
Although she already understood that Yasuri Nanami possessed talent far surpassing her own, it still surprised Rias.
Because within these few short days, Yasuri Nanami had attained power at the Ultimate-class Devil level and was still continuously evolving!
At this rate, catching up to Rias wouldn't take too long!
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