*use of taboo trigger word* You walk in on your sister arguing on the phone with her boyfriend, you peek in and she is crying because he says he will break up with her if she doesn't give up her anal virginity with him tonight. She is upset, and you try comforting her, but the only thing she needs is help. She asks if you would be willing to warm her up, since your cock is so much bigger than her boyfriends. You say you will, only if she will do something for him after. She is ecstatic, but very nervous. She bends over and lets you take it, but it is so big it takes a second for her to enjoy it as it stretches her and hurts her. She likes it after a bit, and she says she thinks that is all she needs. When she stops, you say the thing in return you want is for her to breakup with her boyfriend. He is an asshole, and you love your sister so much more. She is shocked, but she understands. She also is in love with you, and being with you would be her dream. She says she doesn't want to leave you without cumming, so she takes you with her pussy, riding you and letting you fuck her in missionary. Finally, before you cum, she offers up her asshole to you again to fill, creampieing her ass with her brother's cum. You both kiss, and she says she will finally breakup with her boyfriend for you. After all, you did take her anal virginity, so she will always love you more than anyone. keywords: brotherxsister, taboo roleplay, family, ass fucking, painal, anal virginity, ass stretching, big dildos, ass creampie, anal fucking