Marketa: My Twin Sister and Me
Copyright© 2026 by Marc Morven
Chapter 2: Getting Closer to My Sister (Two Days Later)
Incest Sex Story: Chapter 2: Getting Closer to My Sister (Two Days Later) - Marc and Marketa are twenty-three-year-old fraternal twins who have always shared an unusually close bond. Born in the Czech Republic and adopted by an American mother, they are now attending different colleges and beginning to lead increasingly separate lives. Marketa is beautiful, outgoing in everyday life, but deeply inexperienced and insecure when it comes to intimacy. After struggling to become comfortable with men, she turns to the person she trusts most: her twin brother.
Caution: This Incest Sex Story contains strong sexual content, including Ma/Fa Consensual Heterosexual School Brother Sister Oral Sex
Okay, I have a problem.
A very pleasant problem to have, admittedly, but a problem nonetheless.
The problem is figuring out how I’m supposed to keep seeing my little sister as just my sister after the incredible blowjob she gave me today—and after discovering how much we both seemed to enjoy the experience.
I’ll start from the beginning and explain exactly what happened.
After spending the last two days thinking about it from every possible angle, I eventually decided the best thing I could do was stop agonizing over it and just get it over with. So this afternoon, after lunch, I picked Marketa up in my car. She looked absolutely gorgeous, and we drove somewhere well away from the university, to a secluded place where people sometimes park to have sex. It’s a huge open overlook with a view of the entire city in the distance, and I’d been there myself with girls before.
When we arrived, Marketa looked at me with that bright smile of hers. We were both obviously a little nervous, so we talked for a while about how weird the whole situation felt and how we thought it was going to go. Then, because there really isn’t a more delicate way to put this, my little sister got onto her knees on the passenger seat beside me, put my cock in her mouth, and started sucking it.
I’m not going to lie—it was incredible. Watching my twin sister close her eyes as her head moved slowly up and down, her mouth working around me, was something I never expected to enjoy as much as I did.
And I know how wrong that sounds. I know. But she treated the whole thing with such a playful, almost lighthearted attitude that eventually I came in her mouth and she swallowed. When she stopped, we both burst out laughing, and then she gave me this incredibly happy hug and told me I was the best brother in the world.
But I should probably explain the whole thing properly, because the reason I enjoyed seeing my little sister sucking my cock in the car so much wasn’t just the physical side of it. It was the dynamic that developed between us and the things she said.
I’d been incredibly nervous all day. I’d made an unusual amount of effort getting ready, even grooming myself down there, and tried to prepare myself mentally as best I could. I’m not going to lie: I’d been anxious about this for the entire two days.
When I picked Marketa up at the agreed time, though, she seemed much more relaxed than I’d expected. She looked amazing, as Marketa always does, with her perfect long hair and that cheerful expression she always seems to have.
During the drive, we just talked. Family stuff. College. When the two of us were going to visit Mom again. Completely ordinary things. If you’d overheard us, you’d never have guessed we were driving to a secluded spot so my sister could suck my cock.
By the time we reached the overlook, I’d started to relax too. We kept talking about random things for a while after I parked, until eventually I realized one of us was going to have to acknowledge why we’d actually come.
“So,” I said, still half hoping she’d tell me she’d changed her mind, “how do you want to do this?”
Marketa laughed. “I honestly don’t know. How do you normally do it?”
She seemed a little nervous, but nowhere near as much as I’d expected.
I explained that normally a girl would touch a guy through his pants for a while, wait until he was hard, then take it out and start sucking him. It felt incredibly weird explaining that to my sister, but that’s what I did.
“Okay, then I’ll do that, and you tell me if I’m doing anything wrong, all right?” she said with a nervous laugh.
“All right.”
Marketa reached over and started rubbing me through my pants. I’m not going to lie: I got hard much faster than I’d expected. I’d thought being with my sister might make it difficult, but apparently not. After a while, while she was still touching me, I asked whether she wanted me to take it out or whether she wanted to do it herself.
“You do it,” she said.
So I leaned back slightly in the driver’s seat and took out my cock, already big and hard, showing it to my sister for the first time.
Her reaction caught me completely off guard. She laughed nervously and stared at it.
“Jesus, bro. How the hell do you expect me to put that in my mouth? It’s huge!”
Her nerves were obviously making her laugh, and I couldn’t help laughing too. I explained that she didn’t have to put the whole thing in her mouth, just the tip.
Marketa took things very slowly. Still smiling, she touched it first with one finger, then wrapped her hand around it and started playing with it, examining it with obvious curiosity.
Then she said something that caught me completely off guard.
“Jesus. Now I understand why Mireia liked fucking you so much. It’s perfect.”
She said it with a nervous smile. Mireia was an old friend of hers I’d slept with a couple of times years ago.
I’m not going to lie: hearing your own sister tell you your cock is perfect while she’s holding it is a very pleasant sensation. I thanked her, and she kept playing with it.
She took her time. I could tell she was struggling to work up the courage, but I didn’t say anything.
To be honest, at that point I wasn’t even completely turned on despite being rock hard. I was mostly watching my sister play with my cock as though it were some strange new toy.
Then she smiled, blew out a breath, and nodded to herself.
“Come on. I can do this. Here goes.”
She shifted onto her knees on the passenger seat, and I watched her lower her head toward me.
The first thing she did was kiss it. Then again. And again. Then, without warning, she put the tip in her mouth and started sucking while holding the base between two fingers of her right hand.
I’m not going to lie: I just sat there with my mouth open. Watching your twin sister put your cock in her mouth for the first time and slowly start sucking it with her eyes closed is one hell of a thing to process.
I checked the mirrors to make sure we were really alone. The last thing I wanted was someone turning up and catching my sister sucking her brother’s cock—my cock. But because it was still afternoon, the place was completely empty. It normally doesn’t fill up until nighttime, when young couples start arriving in their cars.
The first few minutes felt surreal, and it took me a while to relax. But once I did, I have to admit that watching Marketa suck cock was beautiful.
It was only then, with my sister between me and the passenger seat, that I really registered just how beautiful she was. That Czech face, that smile, that slim, perfect body. Once I’d adjusted to seeing her in such an unfamiliar position, I started stroking her hair and back. She didn’t react; she simply kept going.
After a while, she stopped and looked up at me with a smile.
“Am I doing it right?”
We both laughed.
“Marketa, you’re doing amazingly. I love it.”
“Really?” she asked, smiling.
“Seriously. It’s incredible.”
I meant it. I could tell she liked hearing that. She thanked me, then closed her eyes and went back to it.