This was not only because of betrayal of Shinpachiro NAKANISHI and Heishiro MIYAWAKI, but also because a certain number of ashigaru taisho (samurai in command of a troop of foot soldiers) of the garrison force had been convinced by Shinpachiro NAKANISHI and so on.
これは中西新八郎と宮脇平四郎のみが裏切ったわけではなく、中西新八郎らの説得に応じた守備兵力の足軽大将らが加わったためである。