One of the best anime i've seen with supernatural theme and highly linked to Japanese folklore The development of characters in highly noticeable if we compare the the beginning and end of the story The story takes the protagonists through a plot full of adrenaline and unexpected surprises, always playing with the suspense that something worse could happen, the touches of yuri that she has are in the right measure The protagonists sometimes have very human reactions and other times, of complete psychopaths In the manga it has a very interesting continuation that further enriches that aura of mysticism that surrounds the course of the story