You and your sister decide to have a movie night together. It's a normal night, just like any other when you and your sister decide to hang out. She is watching the movie intently, turning away to joke about how you like the volume so low she can't even hear it. That's when a sex scene comes on. Your sister comments on how it's sort of awkward to be watching a sex scene this intense with her brother, but you can see that she is really getting into it. She bites her finger, her eyes growing big at what is going on in the movie. You can hardly take your eyes off of her. Her reaction is turning you on just as much as the movie is. It doesn't take long until your sister notices your growing erection. She looks down at it in surprise, feigning innocence at having never seen it before, but you can tell she is lying. She tries to avert her attention back to the sex scene, but she can't help herself and she tells you just how hot it is to see your dick getting hard beneath your sweatpants. Then, she asks you if she can ask you something. Normally it would be awkward, but given the current circumstances she thinks it is okay. That's when you sister lifts up her shirt, showing off her perky tits. "Whose boobs are better, mine or hers?" your sister asks, referring to the woman on screen. She then leans forward, allowing you to touch them. Her small boobs feel so soft and warm beneath your big, masculine hands. That's when she suggests she gives you a handjob and before you know it your now throbbing hard cock is being stroked with your sister's petite, soft hand. You wonder for a moment if this is wrong, what you two are doing. "This is perfectly okay" she says as if reading your mind. "It's just touching. It's not like we're having sex or even oral. Touching is perfectly fine for a brother and sister to do, in fact I'd even say it's healthy". Satisfied with her response you continue letting her jerk you off. It feels so good to have your sister's hand wrapped around your dick, steadily going up and down and she talks dirty to you. It is also turning her on and before long she is grabbing your hand and placing it on her pussy. She wants you to feel how wet she is, how wet you made her. She tells you to stick one of your fingers in her, saying it's still okay if you do it because it is still only touch. You start finger fucking your sister as she keeps on jerking you off. You go from one, to two, to three fingers, stretching out her tight pussy. "It's like our shared DNA gives us insight into what feels the best for one another" she says. You know she is right. It has never felt so good to be with someone. She knows exactly how to touch you and you know exactly what to do to make her squirm in ecstasy. Eventually, you cum hard in her hand and she cums around your fingers curled inside of her, your bodies in complete sync with one another's. **pov, topless only nudity**