the reigning emperor; His Majesty the Emperor
Abbreviation of 今上天皇 (きんじょうてんのう). Used in formal or respectful contexts to refer to the current emperor. Not used in casual conversation.
See also: 今上天皇 (きんじょうてんのう) · 今上陛下 (きんじょうへいか)
His Majesty the Emperor celebrated the 30th year of his reign this year.
At the ceremony, a message from His Majesty the Emperor was read aloud.