The idea is good, the characters have complex stories, but the few episodes that are available are few to tell them, so everything seems a little rushed. The story begins with witch hunters, but these do not represent much of the plot, which weakens the whole construction a little, not to mention that the mixture between magic, technology and demons complicates the plot a little more, leaving everything poorly told or superficial . The beginning villains are well defined, but something interesting is the air of doubt about good and evil throughout the plot, but again, the few episodes available spoil a little, because everything has to be resolved quickly, but it is still a fun anime.