Assembly of the 8th Sacrament

The Assembly of the 8th Sacrament (第八秘蹟会) is the Inquisition group of the Church. Its members, the Executors, have two main purposes, which are recovery of holy relics and demon killing. The Executors hunt anything that is heretical, that is not part of God's teaching. No heresy can be tolerated in the world of God, and demons who corrupt and defile His children must be exterminated.

The Burial Agency is related to the Assembly. Kotomine Kirei and Kotomine Risei are Executors members of the Assembly, and Ciel is an Executor member of the Burial Agency. There also are Exorcists who do not specialize in demon hunting.