INTRODUCTION

Assiah, where humans live, and Gehenna, where evil lives.

These two dimensions essentially cannot directly interact with each other,
but demons can interfere with Assiah by possessing physical objects.

However, some humans—exorcists—take it upon themselves to drive out the demons..

Their duties beyond exorcism are broad, ranging from preventing demon-related disasters or terrorism,
to listening to the worries of the local residents.

In contrast to the exorcists engaged at the front lines against demons,
there are many others who are overwhelmed by daily chores at the Japan Branch of the Knights of the True Cross.

In order to protect the lives of the local residents, they take on all manner of odd jobs,
from solving unnatural phenomena, to making offerings at forgotten shrines, to debugging the exorcist support app, TapChat.

One day, a fire breaks out in the Hyakusai Pagoda,
the location of one of the personal collections of possessed relics owned by Mephisto Pheles, the Preceptor of the Japan Branch.

Since then, there have been ever-increasing eyewitness reports of unfamiliar evils lurking within True Cross Academy Town.

What set fire to Hyakusai Pagoda and what drew evil to that place?

The disaster will set into motion a new chapter in the exorcists' lives.