A crown used for an emperor or nobleman role, with a tail hanging in an arc behind it. The emperor uses a crown with an upright tail called ryūei-no-kan, but this has been in use only since the middle of the Edo period, and Noh plays do not use it even they include the role of an emperor. Civilian officials use a suiei-no-kan, while military officials use a crown with a rolled tail called ken’ei-no-kan.