It is the room of highest social status in the Kyuden, where the main regular ceremonies are held, including Their Majesties' New Year Reception, Ceremony of the Presentation of Credentials, Imperial Investiture, Ceremony of Appointment of Official with Imperial Attestation, Ceremony of Imperial Conferment of Decoration, Ceremony of the Kosho Hajime (Imperial New Year's Lectures), Ceremony of the Utakai and Hajime (Imperial New Year's Poetry Reading) and important ceremonies of the Imperial Family, including Choken no gi (Rite of audience) and Enthronement Ceremony.
宮殿内で最も格式の高い部屋で、新年祝賀の儀、信任状捧呈式、親任式、認証官任命式、勲章(日本)親授式、講書始、歌会始等の主要な通年の儀式に使用される他、朝見の儀、即位礼正殿の儀などの皇室の重要儀式でも使用される。