Since it's common that there are Mana-Wrecking Auras amongst those who are high-ranking aura users, there are different ways of using and controlling auras, different techniques created by many.
But apart from the Knight of Destruction, whose aura is simply the sun, there are ways other auras can be restricted. The Dark King Lucan Baylor has been working on that. The moment he reached the level of a Supreme Mage, he created a magic formula to restrict auras.
A magic technique known as the Breaking Point, a magic formula he created to restrict the usage of auras against him. Rey Castle understood that. While his magics aren't at the highest level, he is the type who watches his opponents.
Before the battle started, he released a faint aura to see the reaction of the Dark King Lucan Baylor, but there was no reaction. No reaction meant only one thing—his auras had been restricted.
