Your review is really detailed! Anime has a very long history and you did well in touching all of those interesting aspects. I means, the picture card, stage and all is just cool. Its Kamishibai, right?
I love the story line of this anime, it sounds quite creepy but interesting as well. I wonder if they wanted it to be a horror anime for kids at first. lol.
Not only anime, but animation in general has a long history now. Thanks for the comment.