This is a fantastic Anime that covers the gambit of horror, comedy, romance, and action with an amazing and complex plot. This is a satisfying collection that takes the audience on a roller coaster of emotions. I've owned it for years and seen the entire collection about 5 times now. The series chronicles the journey of a young girl destined to save the human race from an ancient race of monsters - which ALL monsters throughout history are based on - trying to destroy the world and remake it in their own image. Along the way the young girl has to battle her own internal demons. The cast around her (very well fleshed-out) also have to deal with their own internal demons. While based in Japan, the underlying theme/message is important to the entire world - especially in light of the recent environmental events.