Imperial Investiture

The Imperial Investiture (親任式, Shinninshiki) is an official inauguration ceremony whereby the Emperor of Japan formally appoints the nominated Chief Justice or the nominated Prime Minister of Japan to office. In practice, the Prime Minister is nominated by the Diet, while the Chief Justice is nominated by the Cabinet. The Emperor is required to appoint the nominated person, without the right to decline appointment.

During the time period of the Empire of Japan, as the Emperor was the source of executive authority, there were also investitures held for military officials. Such appointees were called the Shinninkan (親任官).