The story contains a nude image.

I woke up in my room with a huge boner. It was just another Saturday morning without anything to do. I pressed my cock against my mattress and felt a burning sensation. I really needed to fuck someone.  I thought of jerking off, but I wanted to put my dick inside a pussy, feel some flesh, feel the wetness of a female body. My most proximate option, my sister.

I looked at my alarm clock. 9 am. I got up, went to my bathroom and took a leak. Then, I went to the kitchen and grabbed a bottle of water. I was so thirsty. I took a sip and walked around our massive house, a place that I shared with Valentina, my sister. My parents lived abroad, which in a way had caused this closeness with Valentina, a sexual bond that had started some months ago, and which had driven us to do some really crazy things. Actually, just some days ago we had been on a crazy trip with some friends, which had ended up in a wild orgy.

As I recalled the events of that trip, my erection came again. I stroked my cock and decided to go upstairs to look for some relief. My sister’s bedroom door was closed. I opened it slowly trying not to make any noise. I took a quick peek inside, and there she was, a sleepy angel, an innocent girl who could turn into a real slut if she wanted to.

She was asleep, her head lying on her soft striped pillow, her warm comforter covering her body up to her belly, but leaving her big boobs uncovered. A gorgeous sight, a splendid image that not even the most skillful painter could ever create. I stared at her round white tits and I fancied her more than ever.

I sneaked into her bed and lay on my side behind her. I hugged her and moved my hands along her body, caressing her thighs, her belly, her ass, and then her huge boobs. She uttered a soft moan. I kissed her neck, her left cheek, her back, and then moved my left hand and placed it on her vagina.

I rubbed her clit gently, softly, slowly, and then I used one of my fingers and started digging into her pussy. I moved one layer, and another, and gradually my finger got to get inside her cunt, which now was a little wet.

Valentina moaned and turned her head and kissed me. Her eyes were half open. She grabbed my cock and stroked it without any hurry. She knew how to do her job, she knew how to please me, how to make me feel good.

“I want you to put that big cock into my cunt, right now,” she said in a soft sexy tone of voice.

I obeyed my sister’s command, and immediately, my dick made way into her pussy. She moaned again. I grabbed her gigantic tits and began to thrust slowly. I kissed her neck, I sucked her skin, and made sure she felt pleased.

“Fuck me harder, little bro,” whispered Valentina.

I liked how she called me “little bro”, even though I was one year older than her. I began to fuck her harder, but without rushing, one thrust at a time, hard enough to fulfill her desires. Her pussy was totally wet by now. I inserted one finger into her sacred hole, just to feel our sex. I told her to do the same. I told her to feel what it was like to be there together, our flesh bonding, our fluids mixing. She introduced her finger and touched my shaft.

“Do you like it? Do you like to fuck your sister?” She asked me.

“I love it, I love your body, I love your pussy, and your tits.”

I thrust again, harder and faster. Valentina screamed. I slammed her big ass and then placed my hand on her boobs again. I moved them in a circular way, as if I were massaging them.

“Do you like my tits, little bro? Do you like playing with them?” She asked again.

“Yeah, I loved them,” I said as a I grabbed her left boob and put it in my mouth.

I licked her boob and pressed her small nipple, and made it harder. She hissed and raised her hand to reach for my hair, which she caressed gently.

I stopped, moved towards her nightstand, opened the drawer and looked for a present I had given her some months ago, a small butt plug. I also took a bottle of lube she kept there, and poured some on one of my fingers. I moved closer to her, spread her ass cheeks, and with my lubed finger, I dug into her asshole.

Valentina moaned again as I moved my finger inside her anus. I played with her hole for some more seconds and then inserted the butt plug in her ass.

“You like it when I fuck your ass, huh, little slut?” I whispered into her ear.

“I love it, hon. Put your dick into my pussy again, please. I love to have both holes filled,” said my slutty sister.

I penetrated her again, and then I remembered how, in the orgy, Valentina had been double penetrated by two strangers who had shown up at our party. She looked amazing that night, so hot, so lustful, the most desired girl of the evening.

I kept fucking her like that for some minutes until Valentina told me to stop for a second. Then, she made me lie, and she got on top of me. She removed the butt plug, grabbed my cock, and put it inside her anus. She moved very slowly until her ass absorbed my dick. Then, she began moving faster as she moaned and hissed, and I got hold of her tits.

I also began to rub her clit with my fingers, increasing the pace gradually until Valentina exploded and had a powerful orgasm. She stopped for a while and then grabbed my cock and introduced it in her pussy. It was so humid, a total flood inside my sister’s sex cave.

I grabbed her big ass and used it as support to thrust. I pushed faster and harder. My sister screamed and so did I. I was on the verge of coming. I accelerated, fucked her harder, and then I came. She kept on moving, trying to take advantage of my still hard cock, and some seconds later, she came for the second time.

She lay next to me. We kissed while I caressed her boobs and she rubbed my now weak cock.

We spent the rest of the morning in bed, just chilling out, until my cell phone rang. It was dad, so I answered.

“Hey dad! How are you?” I said enthusiastically.

“Fucking creep. What have you been doing to your sister?” he shouted at me.

“What? What are you talking about?” I replied.

“Fucking asshole! Fucking bastard!”

“Dad, what’s going on?” I asked, now terrified.

“Asshole! A friend of mine sent me a video yesterday. I opened it. There were a lot of people having sex and there was your sister fucked by two guys. I also saw you approaching her to come in her mouth. What the fuck is going on?”

I was speechless. Then, I remembered that guy. The bearded guy, one of the people who came to the party, people we didn’t even know, and I remembered him filming us with his cell phone. Fucking asshole. I guessed he had uploaded a video somewhere, the one my dad had happened to watch.

“Listen very carefully, Andrew. I just bought a ticket for your sister. She’s traveling early tomorrow to join us, and you won’t see her again. As far as the house is concerned, we are going to sell it. We are going to pay the final year of your tuition so that you can graduate, but you will have to live on campus and find a job to cover the rest of your expenses. Once you finish, we won’t ever help you again,” said my dad angrily.

He told me to put my sister through. She grabbed the phone, and as my father began giving her the news, some tears started to roll down her face.

That afternoon was awful, one of the hardest moments of my life. My sister began packing her stuff as she cried every now and then. It felt so bad, and I totally felt guilty because I knew we had let it go so far.

In the evening, I was lying in bed when my sister entered my room. She looked at me, a very sad look came from her beautiful eyes, and as I prepared myself to say how much I lamented what was happening, she took off her t-shirt, revealing her amazing tits.

“I…”

“Shut up,” she said as she took off my pants and hers.

She jumped on top of me and made me penetrate her. I knew it was going to be our last time.

“Fuck me, fuck me, fuck me, please”, she pleaded.

We made love for the last time. Our bodies became just one lustful and unique mass. I penetrated all her cavities for the last time, her pussy, her ass, her mouth. She sucked my dick wildly as I played with her enormous tits, the ones I would never have with me again.

We came several times that night. Our last encounter. The beginning of the end. And then, when the sun came up in the morning, we hugged one more time as Valentina opened the door of the house to leave for good.

She was leaving. She was leaving me. A fatal mistake was separating us now. She looked at me one more time, and said, I love you, silently.

A cab was waiting for her outside. She opened the door of the car, put her baggage in the trunk, and gave me a final look. I sent her a kiss, and then she got on the cab.

As the car went away, she waved goodbye, and I felt shattered, disheartened. My heart and soul broke into pieces. Our lust had taken us too far, and now we were about to pay the consequences.