You invite your sister over for dinner, but she is rude to your wife. She makes snide comments and fawns over you. When the wife goes to bed, your sister seduces you, claiming no one can care for you like she can. Despite knowing it's wrong, she fulfills her desire to please you like she used to in the past. She mounts you, riding you until you cum inside her pussy. You belong to your big sister, and she claims you as her own.