Buddhism in Japan began teaching devotion to the "Lotus Sutra". Eventually, his disciples formed their own school of Nichiren Buddhism, which includes various sects that have their own interpretations of Nichiren's teachings. Nichiren Buddhism established the foundation of Japanese Buddhism in the thirteenth century. The school is known for its sociopolitical activism and looks to reform society through faith. In the Muromachi period, Zen, particularly the Rinzai school, obtained the help of the Ashikaga shogunate and the Emperor of Japan, and accomplished considerable development. After the Sengoku period of war, Japan was re-united in the Azuchi–Momoyama period. This decreased the power of Buddhism,
History of tea in Japan tea ceremony. Upon their return to Japan, Kūkai and Saichō founded the Shingon and Tendai schools of Buddhism, respectively. One or both of them are thought to have brought back the first tea seeds to Japan during this trip. Saichō, who returned in 805, is often credited for being the first to plant tea seeds in Japan, although the documentary evidence is uncertain. The book "Kuikū Kokushi" records that in the year 815, a Buddhist abbot served tea to Emperor Saga. This is the earliest reliable reference to tea drinking in Japan. Subsequently, the Emperor is said to have ordered