Author's Note:
the order of each POV is randomised for each chapter. They both describe the same events. You can read just one POV throughout, or both, in either order.
Chapter 1: by Gina
It was just another long day in the house, and I was on a fetish site I'd been on a thousand times before. I found a guy who was into stepsibling sex, like I was, but I didn't know just quite how much we had in common yet. After a bit of flirting, I sent the first picture, of my naked body from my boobs downwards. There was something familiar about the cock he sent back. About five inches long and very thick, it reminded me of my stepbrother's cock, which doubled my desire to sit on it. I'd had a thing for my stepbrother since he turned 20, a couple of years ago, and suddenly started getting lots of pussy. I thought I was jealous of him at first, as a horny bi virgin who wouldn't have turned down pussy, but I was actually jealous of them for getting to suck and fuck his cock.
It would be so convenient too, if there was a dick in the next room over I could use whenever I needed it, but for now I'd have to settle for my green vibrator. I put on some panties that the guy wanted me to and imagined being fucked by my stepbrother as I masturbated, mesmerized by the cock on my screen. I had two mini-orgasms before a big earth-shattering, mind-blowing release that my quivering hand-held phone camera couldn't do justice. I hadn't cum like that in a long time. I thanked the guy and hoped to find him online again the next day.
Chapter 1: by Ben
When my stepsister Gina sent me a picture of her naked body, I recognised it immediately. I had been talking to a stranger on a fetish site. Annasub69 said she was 22 and into handcuffs, subbing and stepbrother roleplay. She'd unintentionally found the perfect guy. I told her I liked panties and she put a gray pair on for me, and pulled them to the side so I could see her tight, hairy pussy. I knew these panties because I'd blown a load in them, taking them from the laundry when she wasn't looking. I felt my cock go hard in a way it'd never done from talking to someone online, and sent it to her. "Wow, you remind me of someone I know," she said. "Do you find him hot?" I asked, and she said yes. "An old boyfriend?" I suggested. "No, he actually doesn't know I've seen his cock," she said. "Would he fuck you if he knew you wanted it?" I asked. "I could never tell him," she said, "we're related."
We send each other videos of us wanking, her with a green vibrator. In her last one, the camera shakes heavily and badly captures her intense orgasm. I send just a final photo of my stomach covered in cum. I think for a bit about what's just happened, and whether Gina needs to know.