User blog comment:Crimson and Darkness/Volume 24 discussion blog/@comment-39.33.223.204-20171118131522/@comment-139.193.173.232-20171118140025

Each Maou has their responsibility, for example Asmodeus deals with military and Leviathan deals with Foreign affair. I would bet the position of Satan is all about Inteligence gathering and black ops stuff which means the general people don't consider Satan as an "official" Maou position.