In the Ikedaya Incident in 1864, he was attacked by Shinsengumi during the meeting with other fellow members including Toshimaro YOSHIDA, but escaped from the scuffle to the Choshu hantei, and then went to inform the people in the Choshu Domain of this sad news as a witness.
元治元年（1864年）の池田屋事件では、吉田稔麿ら同志と会合中に新選組に襲撃されるが、乱闘から長州藩邸に逃げ込み、事件の生き証人としてその悲報を国許に伝える。