After releasing the highly successful "Why? (Keep Your Head Down)" in their native Korea, the TVXQ duo of Changmin and Yunho has released the Japanese version in the land of the rising sun. To commemorate this release, Avex has just unleashed the official (non leaked) Japanese MV on their official youtube page, check out the MV below and you can support them by purchasing the music. [Thanks to everyone who sent this in.]