今上陛下His Majesty the Emperor; the present emperor; the reigning emperor
Noun
両陛下their Majesties the Emperor and Empress
Noun
上皇陛下retired emperor; ex-emperor; former emperor; emperor emeritus
Noun
上皇后陛下retired empress; ex-empress; former empress; empress emerita
Noun
皇帝陛下His Imperial Majesty; Your Imperial Majesty
Expression