The method to unlock the Supreme Domain, according to the original work's nature, is still quite unclear.
It is said that by pushing oneself to the limit and enduring pain, one can reach this Supreme Domain but before this, didn't anyone fulfill these conditions?
Certainly not.
The world is never short of people who strive with all their might and endure great pain, yet few among them have unlocked the Supreme Domain.
Therefore, awakening the Supreme Domain likely involves other conditions. Otherwise, Akaza wouldn't have pursued this realm for over a hundred years only to achieve nothing.
In the end, many of the pillars did manage to unlock the Mark and wield the Sun Wheel Blade, but those who could unlock the Supreme Domain were very few, only two or three individuals.
Thus, in Reiger's view, the Supreme Domain should be considered the most challenging ability to unlock among the three.
