Anzai
Anzai is a world in which there are no males--only "maidens." It seems to be a medieval/fantasy type world, in which a moon goddess is worshiped and impregnates women when she chooses for them to have a child. Erilynn and her son Máni are from this world, as well as Junoko and a few other characters.
Junoko has noted that she seems to enter the House/Hotel through a kind of fog, and is usually unaware of her visits when she returns to her own world.