In June 1864, bringing his ability into full play as the Shoshi shirabeyaku ken kansatsu, he contributed to the arrest of Shuntaro FURUTAKA, which triggered the Ikedaya Incident.
元治元年(1864年)6月には諸士調役兼監察の能力を存分に発揮し池田屋事件の発端となる古高俊太郎捕縛に貢献している。