For the longest time, I knew I had a second sister. But I didn't meet her until she just turned 15. And being 17 myself, I was still young and confused myself about life. Her name is Melinda. The first time we met, we hugged of course. But I never even saw her until she was 15, so it was a hard thing to process finally meeting her. What was even more difficult to handle was the way she looked. Oh my dear lord!!! 5 foot 5, 135 pounds, dd cup tits, long black hair, completely flat stomach, and an ass that just wouldn't quit!!!! It was difficult not checking her out, as she is my sister. But not being around her all those years, I guess it never registered. So I just saw her as some hot chick. What made it even worse, whenever we stayed over at a relative's house ( which will remain unnamed), we had to share a bed. And if you could only see what she had on that day... Dressed just like a classic farmer's daughter look. Her tits were just pouring out of her shirt, and her shorts revealed some of the most gorgeous legs I have ever seen, not to mention the very bottoms of her ass cheeks as well. Her hair was even done up in high pigtails. My god was she hot!!!!! Well that night at said relatives house, we had no choice but to share a bed. I was extremely nervous, as you could Imagine. We lied there for hours talking that night. Then the first awkward moment happened. I couldnt help it, but I had a rock solid erection. But this girl was fucking hot!!!!! I tried hiding it, which I did a pretty good job of, until she rolled over to face me and accidentally bumped my dick. Our jaws both dropped simultaneously, our faces both red from obvious embarrassment. We didnt speak the rest of that night. I couldnt sleep for the life of me, but she was out pretty quickly. Its obvious what I did as soon as I knew she was out cold. I knew it was wrong, but I just couldnt help myself. I was so careful not to shake the bed, but I masturbated to an extremely intense orgasm... right next to my sleeping sister.
The next night, after staring at her ass all day again, I was out in the living room of the apartment and she went for a shower. I have no idea why she didnt notice the full lenghth mirror hanging across from the bathroom doorway. And the way the apartment was set up, if you sat on the end of the couch, you could look right at that mirror and see in the bathroom, which luckily did not have a door on it from it needing repaired. I knew It was wrong, but I just couldnt help myself. There she stood, taking off her tight black tank top revealing a pink lace bra. "Should I look away?" I asked myself. But I just couldnt. Then the bra came off. To this day, I have seen very few sets of tits as perfect as the ones I saw that night. But I just couldnt look away. That's when I saw her perfectly hard and round nipples and my cock began growing rapidly in my jeans. Then, her tight blue jeans came off to reveal that she was not wearing any underwear at all, a big, thick, black bush making its appearance. I couldn't believe that watching my sister get undressed for a shower would make my dick so hard!!!! Then, it happened. She looked up at the mirror and saw me there, sitting on the couch, staring at her with my mouth hanging open from just being caught. But for some reason, she did nothing about it. She just stood there, watching me staring right back. Instead of covering up, she slowly started rubbing up and down her stomach making her way up to her tits with both hands. She then started playing with her nipples, and smiled at me. She turned around, bent over, and gave me an awesome view of that sweet little pussy of hers. The whole time she just let me watch without saying one word. Then she did something I thought she would never do, especially this being my 15 year old sister. She sat down on the toilet and spread her legs wide open!!! She then pointed at me through the mirror, then at her own crotch. Then she started rubbing herself. I just couldnt take it any more. I pointed to my own crotch, the whole time doing this from the couch while she masturbated on the toilet from the view of the mirror. She nodded her head in approval, and I wasn't going to hesitate, I will tell you that much. My dick immediately came popping out from my unzipped pants, and she stared in awe at me. Slowly we touched ourselves, not believing what the other person was doing. Here I was, sitting on a couch, getting caught peeping on my 15 year old sister, and a mere 10 minutes later we are masturbating together!!!!! Faster and faster we went, her face contorting with obvious pleasure, her head tilted back, and she let out the sexiest moan I had ever heard as the orgasm took over her body. I could feel myself getting closer, and her eyes never left my cock. Then it hit me... The fact that my own sister openly let me watch her masturbate herself to orgasm was too much to bear, and my balls started that ever pleasurable feeling of the mounting satisfaction that was about to occur. The wave hit the tip of my dick so itense that my muscle contractions were strong enough that I came on my own face. IN FRONT OF MY SISTER. She then leaned around the corner and threw a towel at me and said "nice job. I didn't think my brother would have such a huge cock." I proceeded to wipe myself clean as she started the water for her shower. We haven't repeated the actions of or spoke of that night since.
The End