Acceding to "Nihonshoki," the duration of administration was only about ten months and she passed away in November in Emperor Seinei 5 (484) (in fact, she was treated as Emperor, describing it as 'hogyo' [demise].)
『日本書紀』によれば、執政期間は短くわずか10箇月余りで、清寧天皇5年（484年）11月に死死の表現（実際は「崩御」と表記し、天皇扱いにしている）。