A theory most awesome!
stormwreath has written The Secret History of the Slayers - a brilliantly cohesive theory weaving together all the different aspects of the Slayer mythology: What is the demon essence that makes a girl a Slayer? What role did the Guardians have? What about the Shadowmen? Etc etc.
Go read, it's thrilling and very persuasive.
Go read, it's thrilling and very persuasive.