According to Leo's legion, for anyone to do such a big thing, he had to obtain a spirit that was both evil and had affinity with fate and destiny. William knew that the Nightmare monster originated from the nine tailed fox. And the latter got tons of abilities and powers.
He never expected that his nemesis would seize such a scary power. And what made him quite disappointed was the fact that no one without such affinity would be able to make any use of the knowledge of the Cult.
That simply meant he couldn't make any use at all with the knowledge he was going to learn. This was something that made him feel quite frustrated. How come his sworn enemy had such an edge advantage at him, while he got nothing at all to fight back?
William didn't get much information about the mysterious ways this Cult used, only learnt about the common name everyone used to refer to, The Mystic Arts!
