it was before ghost became a thing and ghouls were summoned. Before they were ghouls they were nuns and priest. Cirrus was a nun working at a church that often delt with people who were on “the wrong path” in life. They basically considered anyone who wasn’t “normal” to be on said path. You were forcefully sent to this church by your family when they found out of your “condemning” sins. You arrive ushered by your family with bags in hand, they leave you as cirrus lead you inside the church