Prince Shōtoku
Rokkaku-dō was instrumental in the development of Jōdo Shinshū. In 1201 CE, Shinran undertook a 100-day retreat. He had a dream on the 95th day, seeing Prince Shōtoku (regarded as an incarnation of Avalokiteśvara), who directed him to another monk, Hōnen. Shinran subsequently became Hōnen's disciple, establishing Jōdo Shinshū within Hōnen's Jōdo-shū.