In this chapter we discuss how the idea of Karmic Retribution deviated from its Indian or Chinese form in the Japanese literature from ancient times to the first half of the Middle ages. Buddhism's ultimate goal lay originally in everyone's becoming a Buddha (an awakened one) or in his attainment of the sublime state of Nirvana by overcoming Samsara or Karmic Retribution. However, the sort of Karmic Retribution expressed in "Buddhistic tales" in Japanese Ancient (Nara and Heian Period) had already been all-too-Japanese, that is "this world-centered". These tales didn't tell ordinary people that they should become Buddhas, but that they should wish to live comfortably both in this world and in the other world. Naturally, the true object of salvation here were only good people. This is called the theory of "Zennin Shohki". In the early Middle ages, however, Shinnran began to preach the theory of "Akunin Shohki" (evil people as the true object of salvation) . This isn't so much a special form of Karmic Retribution as the transcending of itself. Therefore, we can call it "causal simultaneity" or "the same time of cause and effect". This is one