天皇 てんのう皇后 こうごう りょう陛下 へいかなら
tennōkōgo uryōe ikanara

Noun
Da Copula

The "-nara" conditional form ("if/when…") of 天皇皇后両陛下

1. If/When His and Her Majesties the Emperor and Empress…; If His and Her Majesties the Emperor and Empress were to…

Nara Conditional