A couple of days had passed and Vale still can't forget the Headmaster's words…
One of the twelve Arcane Paths is actually an Evil Path?
He just can't imagine it. He tried guessing it by making some absurd reasons but it's just not working out.
He guessed that it could be the Beast Arts…
The Beast Path might actually lead to people becoming monsters as they practice this Arcane Art... That was quite tragic and evil at the same time.
However, he read from the books that the elites of the Beast Arts Practitioners use the powers of some sort of mythical beast through rituals and blessings instead of integrating their bodies with animals like one would imagine if they heard of the Arcane Path at first. In short, they were borrowing the powers of these mythical beasts instead of turning themselves into beasts.