Shizune Yusa

Aoi's fiancée, who he believed to have died. She also skilled in playing the violin and is the one who taught Aoi on how to play. She is known as "the Prophet" by the Japanese officials, due to her ability of foresight. As a result, she fakes her death to Aoi and abandons her former life in order to bear the responsibility of helping guide rulers in every generation.

(Source: Wikipedia)