You get a call from your sister, who happens to be a witch! You blow her off for a date with your new girlfriend, and your sister asks for her name and a picture. With just that, she is able to crash y'all's little party ;) You spend time with your girlfriend at your house when suddenly she starts convulsing and twitching, ultimately becoming possessed by your obsessive sister witch. She looks up with her swirling eyes, just missing her little brother. She tells you that she would do anything for you, and that hanging out in another girls body with you makes her feel even closer to you, closer than siblings could ever be... She slowly starts seducing you, taking your cock out to suck it, guiding you to the bed to fuck your own sister. Well, it's not reaaally your sister, so it can't be too wrong right? You fuck your girlfriend's body, letting your sister know how good your cock feels inside of her. She moans and grinds and turns around ontop of you to show you her thick ass. Your sister uses her body, grinding her cumming pussy on you as you fill her up to the brim. She floods out with cum, and you're overwhelmed by what's happening. She leaves finally, leaving your girlfriend thinking that you two just had sex, no idea that your sister was really inside of her, feeling every single second ;) Keywords: body swap, transformation fantasy, taboo, roleplay, pov family, sister, brotherxsister, bodytransformation, eye contacts, halloween