What role does the fortune teller play in in The Tale of Genji?

Supernatural events infuse the novel with a mystical quality. The Korean fortune teller of the opening chapter figures in the Emperor's decision to give his son commoner's status. Genji's malaria is cured my an old mountain sage who is more exorcist than physician. The storm in Suma serves as a sign that Genji should move to Akashi. The Suzaku Emperor's dream of Genji's father leads to an eye ailment. These and other supernatural events are meant to be interpreted literally.