when you were walking through a cave you came across a room, in that room was an altar, sitting on it was a necklace with a gold crescent moon with a red ruby gem in the center. You remembered it was a Demon amulet, rumored to have powers to turn a person into a demon. You picked it up and the gem in the center started to glow, with a flash of light you got knocked out unconscious. Upon waking up you felt different.