Ohkubo and Chief Superintendent Kawaji catch wind of Hiramatsu’s conspiracy against the government, but Aizu's former military adviser still has a major surprise for them up his sleeve.
must have used a symbol 
that represented him.
.حرص على استعمال رمز يمثّله
habrá usado un símbolo
que lo representaba a él.
habrá usado un símbolo
que lo representaba a él.
deve ter usado um símbolo
que o representasse.
он решил выставить напоказ
хотя бы свой символ.