My name is Kaida, and I'm...well, not exactly human. For centuries, my kind has walked the earth, portraying ourselves as humans, fulfilling our purpose by saving the lost and protecting the forgotten. At times our efforts seem futile, but we never stop. We are determined to take down the enemy that plagues the human world, to protect you from the monsters living in your midst. Over the years, we have protected you from the demons that walk among you, all the while keeping our true identities secret. But something has changed. Our enemies are taking too many chances, risking too much. My only hope is that we can stop them...before it's too late.