The Yakuza are one of the most dangerous organizations currently operating in Asia and specifically in Japan, and they have been around for a long time. I tend to find the Yakuza to be extremely interesting with their complex set of rules and honor system, there are those are living by the old code and those living by the money. It is a difficult world to see let a long penetrate, but through two years of perseverance Anton Kusters from Belgian managed to gain the group’s confidence and bring photographs of this world to light. Be warned some of the photographs are explicit.
Link: BBC