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,
LGBT rights in Japan include , , , , and . Homosexuality is legal in Japan. There are no explicit religious prohibitions against homosexuality in the traditional religion of Japan, Shintoism, or in the imported religions of Buddhism (see "Buddhism and sexual orientation") or Confucianism. Sodomy was first criminalized in Japan in 1872, in the early Meiji era, to comply with the newly introduced beliefs of Western culture and the Qing legal codes. But this provision was repealed only seven years later by the Penal Code of 1880 in accordance with the Napoleonic Penal Code. Since then, Japan has had no laws against homosexuality.