Prince Nagaya became an authority of the political world as a leader of the imperial family, but committed suicide in the Nagayao no Hen (Conspiracy of Nagayao) which was said to be a conspiracy of the Fujiwara clan.
皇族勢力の巨頭として政界の重鎮となったが、対立する藤原氏の陰謀といわれる長屋王の変で自害した。