Imperial Prince Toneri gradually became closer to the Fujiwara clan, and when the Conspiracy of Prince Nagaya occurred in March 729 he and Imperial Prince Niitabe denounced Prince Nagaya and made him commit suicide.
舎人皇子は次第に藤原氏寄りに傾斜し、天平1年（729年）2月に起こった長屋王の変では新田部親王と共に長屋王を糾問し、自害せしめた。