August 1419: Nichiu, at the age of 17, was chosen by the eighth high priest Nishiei as his successor through granting of Kechimyaku Sojo (transmission of the heritage of the teachings) and engaged himself in missionary activities for an extended period of time, travelling throughout various districts, such as Oshu (Northern Honshu, the region encompassing Mutsu and Dewa provinces), Kyoto and Echigo Province.
1419年8月、17歳で8世日影から血脈相承を受けて奥州から京都、越後国などの諸国へ長期間にわたり布教を進めた。