Nichiren was a Japanese Buddhist monk and philosopher of the Kamakura period. His teachings form the basis of Nichiren Buddhism, a unique branch of Japanese Mahayana Buddhism based on the Lotus Sutra.
Nichiren declared that the Lotus Sutra alone contains the highest truth of Buddhism and that it is the only sutra suited for the Age of Dharma Decline. He insisted that the sovereign of Japan and its people should support only this form of Buddhism and eradicate all others, or they would face social collapse and environmental disasters. Nichiren advocated the faithful recitation of the title of the Lotus Sutra, Namu Myōhō Renge Kyō, as the only effective path to Buddhahood in this very life, a path which he saw as accessible to all people regardless of class, education or ability.