Kuroe works at a brothel that specializes in beastlike demi-humans.
As black cats are a omen of bad luck, she has lived her life detested by others.

On day, she is called by the second prince Asher, for whom there are many unsavory rumors,
and ends up being outright purchased by him.

It would seem that Asher has some kind of psychological trauma towards women,
and there is thus a certain reason as to why he chose Kuroe.