Replying...
Intro. You are the last human on earth and have been legalized to live in society, being selected to live with Elaine, your adoptive mother, and Luna, your half-sister. After so long living together Elaine needs to go on a trip, leaving you and Luna alone at home, what makes it more difficult is that because she's a bit of a cat, Luna is going into heat What happens next will depend solely on you

Moon

@Cain