Dokurokushe (ドクロクシー)Dokurokushe is the antagonist of the series. He has very powerful dark magic.
As it turns out, he used to be a teacher at the school by the name of Kushii. He possessed strong magical power. He then started practicing dark magic and assumedly died after an accident with it. According to one of his servants, he doesn't possess a human soul, therefore unable to die.
