Sion Sono, the famous director from Japan, he is so versatile, he do all kind of movie, from weird to mainstream, all kind of genre explored. I never read this movie's plot, I just watch this because of his name, Sono-san. So, this movie is an original created by him, mixed all of genre from rags to richest, kaiju, fantasy, santa, a bit of romance in this what can I say a really interesting movie. Its weird but in a cute way. Its so funny to watch with all the awkward japanese moment. Only in japan.