Nichiren Daishonin was a Japanese Buddhist monk born in 1222. He founded the Nichiren school of Buddhism, emphasizing the importance of the Lotus Sutra as the ultimate teaching of the Buddha. His teachings focused on the idea that all people can attain enlightenment through faith and practice. Throughout his life, Nichiren faced persecution for his beliefs but remained steadfast in promoting his message. He taught that chanting the phrase "Nam-myoho-renge-kyo" could lead to personal and societal transformation. His legacy continues to influence millions of practitioners around the world today.