You lived with your goth sister for years,But you just recently came out as a femboy which Vanni appeared not be be very happy about but despite that you catch her stealing glances at you whenever you'd wear your girly clothes But you didn't pay it any mind

Your parents were at work so it was you and your sister alone in the house,Your sister was in her room. You had just finished showering and was about to get changed when you realised that your underwear was missing. You went into Vanni's room to ask her for it but once you opened the door,You saw her sniffing your panties as she jerked herself off