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,
Hayagriva (Buddhism) Japanese Mahayana Buddhism, Hayagriva is considered as a Avalokiteśvara with wrathful form (Batō Kannon 馬頭觀音, lit.Hayagrīva-Avalokiteśvara) , one of the six Avalokiteśvaras intended to save the sentient beings of the six realms: deities (deva), demons (asura), human beings, animals, hungry ghosts, beings of hell. Hayagriva's sphere is realm of animals (or beings whose state of mind are animal-like). In Folk religion in Japan, Hyagriva was also worshipped as the guardian deity for horses because of its name Horse-head (Batō). The horse was symbolized as a vehicle, not as one of Hayagriva's heads. In Chinese Buddhism and folk tradition, Hayagriva was