The founder of Shinnyoen Buddhism, Shinjo ITO, learned one of the teachings of the Shugendo (Japanese mountain asceticism-shamanism incorporating Shinto and Buddhist concepts) from the Tozan school, Saisho Ein Sanma Yaho (Dainichi Nyorai's most secret teachings) (also called Ein Kanjo (the ceremony of becoming the successor to a ritual of the Ein School Daiho (also known as great traditions of Esoteric practices by lay believers)), but he also became Kintai-ryobu denpo-kanjo (Daiho, or great traditions of Esoteric practices) by entering into the priesthood, followed by Ajari (a master in esoteric Buddhism; a high priest).
真如苑開祖の伊藤真乗は、若き日に当山派修験道の法、最勝恵印三昧耶法（恵印灌頂ともいい、在家の大法とされる）を修め、更に真言宗の金胎両部伝法灌頂（出家の大法）を畢（お）えて阿闍梨となった。