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,
Buddhism surrounded by protective gods and goddesses. Visualizations with deities and mandalas in Buddhism is a tradition traceable to ancient times, and likely well established by the time the 5th-century text "Visuddhimagga" was composed. According to Peter Harvey, whenever Buddhism has been healthy, not only ordained but also more committed lay people have practised formal meditation. Loud devotional chanting however, adds Harvey, has been the most prevalent Buddhist practice and considered a form of meditation that produces "energy, joy, lovingkindness and calm", purifies mind and benefits the chanter. Throughout most of Buddhist history, meditation has been primarily practised in Buddhist monastic