Buddhism in Japan introduction of the two schools that had perhaps the greatest impact on the country: the schools of Pure Land Buddhism, promulgated by evangelists such as Genshin and articulated by monks such as Hōnen, which emphasize salvation through faith in Amitābha and remain the largest Buddhist sect in Japan (and throughout Asia); and Zen, promulgated by monks such as Eisai and Dōgen, which emphasize liberation through the insight of meditation, which were equally rapidly adopted by the upper classes and had a profound impact on the culture of Japan. Additionally, it was during the Kamakura period that the influential monk Nichiren
Faith in Buddhism bird-like deities and violent spirits which previously were the focus of pre-Buddhist cults became guardians of the Buddhist teaching. This process of adopting deities as part of Buddhism often occurred when Buddhist devotees or monks did not fully renounce their former devotions when embracing Buddhism. In the early Pāli scriptures, as well as in some customs in traditional Buddhist societies, traces can still be found of the period that Buddhism competed with "nāga" worship and assimilated some of its features. In some Buddhist countries like Japan, a perspective arose of the human world as a microcosm of the macrocosmic realms