It's most plot devices come from the golden era of 80s anime, the art is magnificent, the story simple and alien in its originality.
The art is magnificent and original. Well drawn. Introduces all sorts of new things you can't grasp and you can't take your eyes from, things that are beautiful and which do not follow any kind of anime pattern.
The characters are not over exaggerated, even though most of their lines from time to time are forced, they connect with each other as if they were real. They do their humor antics from time to time and they don't fall into ridiculous. The story revolves very well around them, it's fluid.
And the Opening is legendary.
