It was known that, in the Sengoku Period (Period of Warring States), when the Emperor or Sekkan (regents and advisers) was to issue hosho paper (edict paper) to make a command regarding low ranked people, the benkan (Council of State) who received the order commanded his own Aozamurai to issue the hosho paper, which was called Aozamurai hosho (according to the diaries "Chikanaga Kyo ki" [The Diary of Chikanaga KANROJI], "Nobutane Kyo ki [The Diary of Nobutane NAKANOMIKADO] and "Sanetaka ko ki" [The Diary of Sanetaka SANJONISHI]).
戦国時代(日本)には天皇や摂関などが身分が低い者に対して命令を下すための奉書を発給する際にこれを承った弁官などが自己の青侍に命じて奉書を発給させた青侍奉書が存在したことが知られている（『親長卿記』・『宣胤卿記』・『実隆公記』など）。