Religious culture is an important keyword for understanding rapidly changing East Asian society, especially China, Japan, and Korea. Despite the common influence of Confucian culture on these countries, each has shown a very different pattern of social progress in modern and postmodern times. Although surveys report a low ratio of religious identification and membership in this region, people in this area are religious in a different way from Western societies, and religious culture is closely related to political, economic, and social subsystems. A real force of changing East Asian society is not only political powers or economic classes, but also an invisible culture based on religious belief and practice. This book focuses on the dynamic relationship between social progress and religious culture, organization, or movements in each society since 1945.