In 807, she was suspected of rebellion with the conspiracy of FUJIWARA no Munenari who came from the Northern House of the Fujiwara clan, and confined in Kawahara-dera temple (Gufuku-jiTemple) with the Prince Iyo and fasted with no food and drink (Conspiracy of Iyo Imperial Prince).
807年（大同2年）藤原北家の出身である藤原宗成によって謀反の嫌疑がかけられ、伊予親王とともに川原寺（弘福寺）に幽閉されて飲食を絶たれた（伊予親王の変）。