When Edgar reached the third level of aura, he came to Marshal Frey at the border accompanied by his personal guards to ask about the concept of martial arts that was needed to reach the fourth level of aura.
According to the Marshal, there was actually a stage before an aura master could reach the 4th level: the King's Field! The embryonic form of concept. The field mixed with the understanding of one's road of power or martial art. The founder of Flameworth Sacred Art did not completely understand it, so he was not able to explain it clearly in his written notes that were passed down to every generation of Baynard kings.
