Exorcist Order

The secret force guarding Assiah from Gehenna's demons.

The True Cross Order is an international organization dedicated to protecting Assiah (the human world) from the incursions of demons originating in Gehenna. Operating under a clandestine mandate for over two thousand years, this group functions as a secret paramilitary force directly commanded by the Vatican. While the general public remains unaware of their existence, Exorcists train rigorously to identify and destroy demons that act in damaging manners within Assiah. The organization maintains branches worldwide, with its Japanese branch centered at True Cross Academy, an exorcist cram school where new recruits learn to navigate the constant threat posed by entities capable of possessing living beings.

Quick Facts

Primary affiliation: True Cross Academy (Japan Branch)
Recruitment base: Students at True Cross Academy

Lore & Background

The world consists of two dimensions: Assiah, the material world where humans live, and Gehenna, the demon realm ruled by Satan. These worlds are attached like a mirror and its reflection, separated by a barrier that originally made contact or travel impossible. However, any demon can pass into Assiah by possessing a living being. Historically, demons have wandered among humans unnoticed, visible only to those with prior contact.

In response, Exorcists formed over two thousand years ago as a clandestine group under the Vatican's command to destroy damaging demons. The organization operates globally through several branches, maintaining secrecy from the human population while preparing for the inevitable conflict. Key figures include Father Shiro Fujimoto, an Exorcist who raised Rin and Yukio Okumura until Satan killed him, prompting Rin to draw the demon-slaying sword Kurikara and ignite blue flames capable of destroying almost anything.

Reader's Guide

To understand this world, one must recognize the duality of Assiah and Gehenna. Demons cannot naturally cross into the human world but do so through possession. The True Cross Order serves as the primary defense, training Exorcists to detect these possessions and eliminate threats. Recruitment often occurs at True Cross Academy, a cram school that masks its true purpose from outsiders. The organization's structure is global but secretive, answering only to the Vatican. Key turning points include Rin's enrollment after his guardian's death and his realization that his brother Yukio is a teacher.