I can honestly say I have never watched a movie even vaguely like that one. I still don't know how I feel about it, but I am going by the assumption that since it left me with such a deep impression, it must be good, maybe very good, maybe unique, or maybe just.. awful?
Well, I couldn't stop watching it, and certainly couldn't stop being amazed.
The story is a mockumentary of Japanese superheroes, and follows an aging superhero who is incredibly flawed and has a quite depressing life. Parallel to that are his fights against monsters who are invading Japan. There are actually many very interesting social commentaries and some of the scenes made me tear up I was laughing so hard, but as a whole the movie is just very, very, very strange...
Should you watch it? if you want to see a movie like you've never seen before... sure. Otherwise.. well, see it anyway...