from the back of the book:
Before making any important decision, the Japanese consult their horoscope, determined by Kigaku, the "science of the spirit." This is the first book in English to explain the fascinating and ancient science of Japanese astrology. With a wealth of charts, diagrams, and crystal clear explanations to help you understand your number, color, element, and animal sign, you'll be able to discover -- and learn to outwit -- your destiny. Casting the Kigaku horoscopes of your family, friends, and business partners will be as revealing as it is fun.