It has very good story and it isnt predictable which is pretty rare, you need to watch it more then one time to understand it and the last episode can be explaned in minimum 3 ways. It has a pretty unique story and the story lines are good, the base idea is good too i enjoyed the story but its pretty hard to understand The characters are well drawn and the art style does fit the story it does give you that dark feeling I enjoyed it to the end its pretty good if you like grotesque animes if not then dont watch it