Eko Eko Azarak

Eko Eko Azarak (エコエコアザラク) is a manga written and illustrated by Shinichi Koga. It has been adapted into a live-action film series with six films, two Japanese television drama series' and an original video animation.

Plot
When the chant "Eko Eko Azarak" sounds, something is bound to occur, be it within the town or the school!

A classic horror manga, Eko Eko Azarak follows the witch Misa Kuroi ("Black Mass" in Japanese), and the various horrors she encounters during her travels.