Eon

VANGUARD is a story set on the world of Eon, however it follows many other worlds. The story is about an Irishwoman named Delta who makes a pact with a eldritch genie, and due to it becoming botched, has to jump between worlds and stop evil versions of herself from destroying the fabric of nature.   Delta ends up joining a hunting organization, called VANGUARD, that takes down monsters who eat people called Daevahs. The 2 of the main organization members, Catastrophe and his childhood friend Calamity, fight against these monsters and rogue elements to keep not just their nations safe but the entire world. However, they discover that something very nefarious has been brewing for thousands of years.