Speed Tribes: Children of the Japanese Bubble by Karl Taro Greenfeld

Journalist Greenfeld exposes elements of Japanese culture that most Westerners never knew existed--the gangsters who control Japan's drug trade, a lucrative porn industry, and more. Greenfeld uncovers a Japan out of kilter with the orderly society of popular conception, and teaches how Japan's once miraculous economy has given rise to a predatory subculture.