Religion in Japan capital at Heian (now Kyoto). The six Buddhist sects initially established in Nara are today together known as "Nara Buddhism" and are relatively small. When the capital moved to Heian, more forms of Buddhism arrived from China, including the still-popular Shingon Buddhism, an esoteric form of Buddhism similar to Tibet's Vajrayana Buddhism, and Tendai, a monastic conservative form known better by its Chinese name, Tiantai. When the shogunate took power in the 12th century and the administrative capital moved to Kamakura, more forms of Buddhism arrived. The most popular was Zen, which became the most popular type of Buddhism of
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