Demon Kakka

Demon Kakka, his exelency the demon, the highest lord of the hell, comes from another universe with his cortege to defeat the Kamis (gods) on the earth, the primal objective was to eat the human society once the kamis falls, but then the demons start to enjoy the life in earth, so they decide to start a new religion trhought a heavy metal band known as Seikima-II, their concerts are known as black mass and Demon Kakka act as the priest, singing the demons thoughts.