In spite of the provisions of the Ritsuryo Code, ministers and Dainagon, along with Chunagon, Kurodo no to (Head Chamberlain) and Konoe no daisho (Major Captain of the Palace Guards), stayed at Tonoidokoro (Tonoi's station) and Jikiro (ministers and counselors' station for attendance) in the Imperial Palace during the night in order to prepare for an emergency.
また、律令の規定に関わらず大臣・大納言は中納言・蔵人頭・近衛大将とともに内裏内に置かれた宿直所（とのいどころ）・直盧（じきろ）に宿直して緊急事態に備えた。