It Was in the Genes - Cover

It Was in the Genes

Copyright© 2024 by Kin Asdi

Chapter 6

Romantic Sex Story: Chapter 6 - What do you do when your sexy sister, Cindy, is in love with you? Casper, a true nerd at heart, finds out she is adopted and realizes he has fallen for her as well. The dilemma of their ‘forbidden love’ forces them to find a bearable solution. Will they succeed to have a happy life after all?

Caution: This Romantic Sex Story contains strong sexual content, including Ma/Fa   Fa/Fa   Consensual   Romantic   BiSexual   Heterosexual   Fiction   Brother   Daughter  

I woke up because I felt a warm wet tongue lapping at my raging erection. It was a mind-blowing experience and I had trouble keeping silent because it felt so divine. With trembling hands, I roamed through my sister’s silky hair, and in my bedazzled state, I just figured out she must have crawled under the duvet.

I gasped loudly when she started to suck my girth into her mouth, because I knew I wouldn’t last long. I lifted the duvet, and I just could make out how she was holding the base of my cock in her hand. “Cindy,” I hissed. “Please, I’m gonna cum.”

Instead of slowing down she intensified her heavenly onslaught by bobbing her head even faster. My breathing started to get ragged when my orgasm was about to explode. I barely could keep silent when my cock started blasting thick ropes of sperm into her mouth. My body shuddered when she kept sucking hard while making soft slurping sounds and I sighed deeply when she finally let my cock go. I had never experienced such an intense orgasm before. She moved up to my chest and draped her voluptuous body against mine while my head was still churning from the amazing blow job.

She pecked me on my lips, but I definitely wanted more. Gently, I pulled her in for a decent French kiss. I didn’t care that I tasted my own jizz and I loved the lazy way we were making out. Cindy pulled away from the kiss and as she nuzzled my nose she whispered, “Happy New Year.”

“Thanks,” I gushed happily. “My new year started really good.”

“Uh-huh,” she replied with her voice sounding an octave lower, “Don’t expect other women to do the same.”

“Then why did you do it?”

It was silent for a few seconds before she replied softly, “Because you’re such a sweet guy.”

I knew for sure she’d done it out of guilt, which made me even more determined to help her with her problem. I squeezed her upper body and said, “You’re such a sweet sister.”

She huffed because she understood all too well, I wasn’t buying her explanation. I kissed her forehead and murmured, “Love you.”

I felt the tension drain out of her body as she lazily snuggled closer, “Love you too.”

The deep red color of dawn barely lit my room, and I reckoned it was around seven in the morning. It was New Year ‘s Day and my belated birthday dinner, which I always thought was somewhat strange. Now that Cindy and I were together, made it seemed even more bizarre, simply because we knew we had to stop, no matter what.

I felt sad and tried to divert my thoughts away from the inevitable end of our secret engagement. I needed to focus on something else, something I was excited about. I remembered that we were going to have dinner at my favorite restaurant tonight. The Owl; a typical fusion eating establishment with an amazing view over town. Suddenly I remembered Simon was working there as a waiter, which was the perfect opportunity for my sister.

“Have I ever told you Simon works at The Owl?”

“What?” she gushed, “No, you didn’t! Oh god! Do you think he will be there?”

I shrugged my shoulders. “I can ask him.”

“Don’t,” she immediately hissed, “it would only make it even more awkward, especially if you need to explain why you’ve asked.”

I chuckled, realizing my sister was getting cold feet.

She slapped her hand on my chest and whispered, “Not funny.”

“Hey,” I said soothingly, “I think Simon is the one who’s going to freak out, not you.”

“But I don’t know what to wear,” she whimpered softly.

I rolled my eyes because I thought it was one of those stupid remarks only women could say, but then I knew exactly what I wanted her to wear. “But I do,” I said resolutely, “and because it’s my birthday dinner I would like for you to wear your Christmas Eve dress, stockings included.”

“Oh god,” she groaned.

Those enticing memories flooded instantly back into my mind, which had a stimulating effect on my libido. Cindy giggled when she felt my thickening girth. “You men are all the same.”

We both were shaken by the distinctive squeak of my parents’ bedroom door. A few moments later the noise of splattering water told me my father was relieving himself. I held my breath until I heard him closing their bedroom door again.

It was funny that Cindy and I blew out our breath at the same time. The pent-up tension triggered the urge to be closer to my sweet sister. I pulled her in for another kiss. She responded eagerly, which turned up my desire to have much more.


The glass elevator gave us a wonderful view of the town’s center as it went higher, more Christmas lights on the houses were visible. It was a treat for my parents as well because we didn’t go out for dinner as a family often anymore. Cindy stood next to me and surreptitiously held my hand. I knew it was more her fear of heights than she just wanted to hold my hand as a lover.

The expected talk with my parents about Cindy’s adoption had gone pretty well. I responded surprised as if it was a real shock for me and I asked the obvious questions. There was not much else to discuss other than everything would stay the same. Cindy visibly relaxed after the talk, because it was clear mum and dad hadn’t a clue I already knew the story.

“I don’t know,” my mum said, staring at the vast number of decorated houses, “but it seems like there are more lights than last year.”

“There are,” my dad confirmed. “There’s a rumor that certain officials want to ban Christmas lights because of the excessive amount of energy they are consuming.”

I huffed. “LED lights are so much more efficient. I bet their numbers are based on the old light bulbs.”

With a shudder the lift cabin stopped, which abruptly finished our conversation. The doors opened and the soothing nondescript music of the restaurant told us we had arrived at our destination. A pretty woman stood behind a small desk, smiling demurely at us. “Good evening, Sir. May I know your name?”

“The Roper family; a table for four.”

I had a clear view of the restaurant and was happy when I saw Simon carrying a large tray of drinks. I glanced at Cindy and saw she was paying attention to dad’s interaction with the hostess. I wanted to warn Simon and I suddenly realized there was an opportunity when I saw him walking towards the kitchen.

“I’ll be right back,” I said to my mum and without waiting for her confirmation I dashed towards the corridor. I grinned when I saw Simon checking a piece of printed paper and said, “Yeah, I would like two red wines, a beer, and a coke.”

“Casper!” he exclaimed happily. “What the hell are you doing here?”

We bumped fists. “It’s my birthday dinner. Gonna eat with the family.”

“Oh man, sorry I forgot. Happy Birthday! Which table are you on?”

“Don’t know yet,” I replied and then I grabbed his arm and said with a low voice, “Cindy is here as well. Be extra nice to her if you understand what I mean.”

“What the fuck, man?” he hissed, looking suddenly stressed out, “You told her?”

I smiled while I nodded slowly. “She thought you had a girlfriend.”

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