A young, horny sister can't resist the allure of her brother's massive cock. She watches him stroke it, his punheta becoming more intense as she touches herself, unable to hide her desire. She begs him to fuck her, promising to be his "coroa" or "novinha," whatever he wants. He slaps her face with his cock, then bends her over, giving her a hard, unforgiving fuck, making her moan and beg for more, their taboo lust consuming them both.