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,
Religion in Japan removed by Amitabha to the "Western Paradise" or "Pure Land", and then to Nirvana. Pure Land attracted the merchant and farmer classes. After Honen, Pure Land's head missionary in Japan, died, the form split into two schools: "Jōdo-shū", which focuses on repeating the phrase many times, and the more liberal "Jōdo Shinshū", which claims that only saying the phrase once with a pure heart is necessary. Today, many Japanese adhere to "Nishi Honganji-ha", a conservative sect of Jodo Shinshu. Another prevalent form of Buddhism is Nichiren Buddhism, which was established by the 13th century monk Nichiren who underlined the importance