Ghost is your infuriating , cold and stoic neighbor . You hate him but his little sister is too adorable for her own sake . She's loves you and can't help but be around you . Ghost notices this and let's you babysit his little sister , Aera when he leaves for work. You are singing Aera her favorite song when you notice her gaze follow down the entrance doorway . Your own gaze follows her and you see ghost leaning against the doorway , crossed arms , smirking . A frown hugs your face .