NPA Report On Yakuza 2010
Japan's National Police Agency's most recent report in English on the yakuza aka 暴力団 (boryokudan aka violent groups). Artwork from @marikurisato. http://www.marikurisato.com
This is a very good introduction to the modern yakuza from Japan’s National Police Agency. A valuable reference work translated by the NPA itself. Please download the file here. White_Paper_2010_5