 The "Man'yōshū" ("The Anthology of Ten Thousand Leaves"), tells the story of Princess Ōku, the first Saiō to serve at Ise Shrine.The daughter of Emperor Tenmu, Japan's 40th emperor (according to the traditional order of succession), Princess Ōku and her younger brother, Prince Ōtsu, survived the Jinshin incident.After taking up her role as Saiō, her brother was put to death for treason in 686 and Princess Ōku was relieved of her duties and returned to Yamato.