Adrift in Tokyo, translating obscene rap lyrics for giggling Japanese high school girls, thirtynothing Robert Twigger comes to a revelation about himself: He has never been fit nor brave. Guided by his roommates, Fat Frank and Chris, he sets out to cleanse his body and mind. Not knowing his fist from his elbow, the author is drawn into the world of Japanese martial arts, joining the Tokyo Riot Police on their yearlong, brutally demanding course...