おう東亜 とうあ共栄 きょうえう けんでしょう
ōtōa kyō eukendeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 大東亜共栄圏

1. Greater East Asia Co-Prosperity Sphere, probably.

Polite
Presumptive
Conjecture