よるがおでしょう【
夜顔でしょう
】

yorugaodeshō

Noun

,

Desu Copula

Expresses probability in a polite manner ("probably…") of よるがお

1. Probably dark-faced.; Likely to be nocturnal.

Polite

,

Presumptive

,

Conjecture

,

Usually Written in Kana