One of the six new disciples of Nikko. A native of Echigo in Japan, when young he was led by a follower of Nichiren in the neighboring village to Taiseki-ji temple at the foot of Mount Fuji and entered the priesthood under Nisse of the Kujo-bolodging temple at Taiseki-ji. He later served Nichimoku, the chief priest of Taiseki-ji, and at the same time frequented Omosu Seminary where he met Nikko, Nichiren's immediate successor, and studied under him. In 1333 he and Nichizon accompanied Nichimoku to remonstrate with the imperial court in Kyoto. Nichimoku died on the way and the two disciples went on to Kyoto in his stead. Nichizon remained there, and Nichigo returned to Taiseki-ji with their teacher's ashes. Before his departure for Kyoto, Nichimoku had named Nichidoto succeed him as the chief priest of Taiseki-ji. Nichigo then claimed the Renzo-bo lodging temple and its vicinity in Taiseki-ji, stating that Nichimoku had willed it to him on his deathbed. Nichigo eventually left Taiseki-ji and moved to Yoshihama in Awa Province, where he built a temple named Myohon-ji. He continued pressing his claim on the Renzo-bo, and this conflict between Nichigo and Nichido and their respective successors lasted for some seventy years.