Rakuyou

"I'm crazy and I know it"

- Rakuyou acknlowledging he is insane. Rakuyou (落形, Rakuyou lit. Fallen Form) is a highly infamous Dark Mage within Earthland, widely known for his mastery over Ritual Magic that he is known as The Ritual Master (儀式のマスター, Gishiki no Masutā), despite his use of the four basic elemental Magic, though to a lesser degree.

Trivia

 * Rakuyou's appearance is based off of Avenger from Fate/Hollow Ataraxia.