It doesn't receive the attention of the U.S. or UK scene, but it's safe to say Japanese hip-hop has emerged from the shadow of its larger cousins, becoming a powerful musical force in its own right. In the early '80s, genre luminaries such as Toshio Nakanashi and streetwear impresario Hiroshi Fujiwara helped to export the New York sound to Tokyo, while Charlie Ahearn's seminal 1983 documentary, Wi