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
Risshū (Buddhism) the Shingon sect by decree of the Japanese government. Today only Tōshōdai-ji, which resisted the government measures, retains its identity as a Ritsu temple. Risshū (Buddhism) , also "Ritsu school", is one of the six schools of Nara Buddhism in Japan, noted for its use of the Vinaya textual framework of the Dharmaguptaka, one of the early schools of Buddhism. The Ritsu school was founded in Japan by the blind Chinese priest Jianzhen, better known by his Japanese name "Ganjin". Ganjin traveled to Japan at the request of Japanese priests, and established the Tōshōdai-ji in Nara. During the Kamakura period,