He sent Hajime SAITO to Goryoeji formed by Kashitaro ITO and took measures to successfully prevent ITO's plan to assassinate KONDO; he assassinated ITO and Heisuke TODO and completely destroyed Goryoeji (however, there are different stories regarding Goryoeji and ITO).
伊東甲子太郎の御陵衛士にスパイの斎藤一を送るなどして伊東の近藤暗殺計画を未然に防ぎ、伊東、藤堂平助を暗殺し御陵衛士達を壊滅させた（油小路事件）（御陵衛士、及び伊東に関しては異説有り）。