When The Emperor Was DivineBy: Julie Otsuka 'A compelling, powerful portrait of a terrible endurance. Terrific' The Times Four months after Pearl Harbor, signs begin appearing up and down the West Coast instructing all persons of Japanese ancestry to report to 'assembly centers'. For one family reclassified, virtually overnight, as unwelcome enemies it is the beginning of a nightmare of oppression and alienation that will alter their lives forever. There is the mother, reeling