On August 18th of the same year, upon the August 18 Incident, SERIZAWA left with KONDO, NIIMI and other members of Miburoshi-gumi to defend the Imperial Palace, but the warriors of Aizu Clan guarding the gate [of the Imperial Palace] held out their spears and did not allow them to pass because they did not know about the Miburoshi-gumi.
同年8月18日、八月十八日の政変に際して御所の警備のために近藤、新見とともに隊士を率いて出動するが、御門を固めていた会津藩士たちは壬生浪士組を知らなかったため槍を構えて通そうとしなかった。