Review Detail of Thesilverderp in Blessed by Night

I like it so far, but I want to be certain about something. Are Aubrey and Aisha (I know she’s into women but she could be Bi for all I know) a part of the harem or nah? In the description it mentions that they have a yuri relationship, but sometimes in harem novels that means they have a romantic relationship with each other AND the main character, so I’m just making sure.