A TABOO WINTER SPECIAL! You come home expecting your sister's boyfriend to be over, but she's sitting alone, wearing her cute warm sweater. She tells you that he left, because they had a disagreement: she asked him to eat her pussy, and he refused. You agree with her that this is incredibly unfair; if she's going down on him, of course he should return the favour. Your sister asks you to shut your eyes whilst she changes position, as she has no panties on. But you can't help but look, as you've always had a thing for your sister. And it turns out, she feels the same way. It's your turn to please your sister in a way her boyfriend did not...