It is the largest sect among the various Nichiren sects which includes various monryu (school of a sect) having different doctrines such as 'the school of Shaka Honbutsu-ron (the idea Shakya-muni is the True Buddha) and Icchi-ha (the idea the thought of shakumon and honmon is the same),' 'the school of Shaka Honbutsu-ron and Shoretsu-ha (the idea the thought of honmon is better than shakumon)' and 'the school of Shuso Honbutsu-ron (the idea Nichiren is the True Buddha) and Shoretsu-ha.'
「釈迦本仏論と一致派」、「釈迦本仏論と勝劣派」、「宗祖本仏論と勝劣派」など教義の異なる諸門流を包含する日蓮系諸宗派中の最大宗派。