For years now, I've been telling people that the only possible explanation of modern Japanese culture is that they've been thoroughly infiltrated at the highest levels of their society by Illithids. They hate humanity, you see, and here we can see them using their Japanese proxies to communicate this fact to the world at large. Doing so, I believe, is a great source of amusement for the Mind-Flayer over-class which rules over Japan; they set their human thralls about the task of demeaning the human condition and eroding all human dignity - a task which the Japanese have become uniquely skilled at - in order to serve the overall Illithid agenda of breaking the wills of the human race, so as to facilitate their eventual consumptions of all of our brains. 

It is with this in mind that I view Japanese culture with a unique combination of fascination and bottomless, endless, dread.