The extraction of battle aura failed.
This was because battle aura was derived from Eastern martial arts. In theory, it was still a type of physical energy. It was fundamentally different from the combat method of a mage who rubbed fireballs with his mental strength.
It swam in his body and acted on his body. It could resonate with his muscles and cause his body to erupt with extremely powerful strength, allowing him to do things that mortals could not do, such as rebounding, enduring, killing, and so on.
In short, it was used to buff warriors.
This involved a problem.
A warrior with a buff was still a warrior. Even if his battle aura erupted, he still had to slash with a large knife. It was just that his slash was stronger and more exciting.
Battle aura could not be released.
At the very least, at the knight's level, he could not do this.