Nichirō wants to follow Nichiren when Nichiren is exiled in 1261; but Nichirō is forbidden to do so — Postcard artwork, circa 1920s.
Nichirō agreed with Nisshō's defense of Nichiren as a Tendai reformer. He founded a practice hall that became part of Ikegami Honmon-ji, the site of Nichiren's death. His school is now part of Nichiren-shū.
Nichirō designated nine senior disciples. Among them were Nichizō and Nichiin.