Third Rank:
Beginners who have just started to wield the sword and are stronger than ordinary humans and even some superhumans. At this level, they can faintly sense aura, and their physical abilities are moderately enhanced.
Second Rank:
They are able to use a small amount of aura and can fully perceive it.
First Rank:
They can manipulate aura, and those who have mastered this stage can control it completely.
Higher Realms:
Peak Realm:
A realm where one reaches perfection in aura usage, allowing them to predict upcoming movements and perceive countless possibilities of future actions.
Those who reach this level achieve "Silken Sword" — a state where the sword and the person are nearly fused as one. Achieving Silken Sword is essential for reaching this realm.
Realm of Sword Integration:
The sword and the user become one; the individual feels as if their body and sword are completely unified.
They can cut through anything without exception — emotions, telepathy, even their own perception.
Those who reach this level attain ideal unity with the sword.
Realm of Transcendence:
The consciousness of the person merges with the sword, creating a sword born from pure will.
Example: An assassin's will to kill and cut merges with the sword, resulting in a "Sword of Will."
Although the example may be simplistic, the idea is that a sword formed from the aura and will of the user is born through this fusion.
Alright, these are the current realms, and of course, I won't write new realms because if I do, it will be considered... A spoiler