Yoshida Shōin
He was a student of Yoshida Shōin at the Shōka Sonjuku and later joined the "Sonnō jōi" movement ("to revere the Emperor and expel the barbarians"), together with Katsura Kogorō. Active in the movement, he took part in an incendiary attack of the British legation on 31 January 1863 led by Takasugi Shinsaku, and in the company of Yamao Yōzō attacked and mortally wounded the head of the Wagakukōdansho institute on 2 February 1863, believing a false report that the institute was looking into ways of toppling the Emperor. Itō was chosen as one of the Chōshū Five who studied at University College London in 1863, and the experience in Great Britain eventually convinced him Japan needed to adopt Western ways.