Kira told a lie that the formal dress at the ceremony of Emperor's reply was long kamishimo, in fact it was eboshi (formal headwear for court nobles) daimon (shogun or daimyo's formal costume consisting of wide sleeved jacket with family crests).
勅答の儀の日の礼服は烏帽子大紋なのに長裃でいいと吉良が嘘を教えた。