だい日本 にっぽん ゆたか秋津洲 あきつしまなら
dainippon'yutakākitsushimanara

Noun
Da Copula

The "-nara" conditional form ("if/when…") of 大日本豊秋津洲

1. If/When Great Japan is abundant and peaceful.; If Japan were prosperous and tranquil.

Nara Conditional