I asume you mean Hirohito, the wartime "Tenno" or emperor.

The military dictatorship that overthrew the fledgling Taisho-era democracy was a very bad thing that destroyed Japan.

The (much diminished) military was therefore excluded from the tripartide "Iron Triangle" system of the post war era that divided power between the political class (feudal clan leaders) , the bureaucrats (a Confucian strict meritocracy) and business (the urban haute bougeoisie - who pay the bills and cannot, therefore, be ignored).

HTH.