Later, he became Kokuji Sanyo (national affaires council), and he spearheaded the Joi ha (group of expulsion of the foreigners) with Sanjo, but in 1863, he was attacked by an assassin at Sarugatsuji outside the Sakuhei-mon Gate in Kyoto on the way home from a Court Council late at night, and died at home at the age of 27.
のちに国事参与となり、三条とともに攘夷派の先鋒となったが、文久3年（1863年）に深夜朝議からの帰途、京都朔平門外の猿ヶ辻で刺客に襲われ自宅で死去、享年27。