Seems interesting .......but is the girl also pretending to be a boy or????

yes the girl is pretending to be a man and the empress is pretending to be a female

i get the man pretending to be female, but why would the girl pretend to be a man?

Lack of desire to have too many man and be part of a possibly chaotic drama in women's high society?

ohhh, okay. Makes sense, but like it's not like she HAS to have a harem
maybe it'll make sense later on?? ahaha what do i know