Short Story] [Fucked the Flirty Sister-in-law] (Family Incest Adult Fiction)

My sister-in-law is 32 years old this year. She is pretty, plump, has big breasts, a round butt, and is very sexy, full of the flavor of a mature woman.
Her company started new operations this year and added several computers. The rule was that those who don't know how to use computers are not allowed to work. This made my sister-in-law very anxious because she knows nothing about computers.
So she came to me to ask me to teach her computer. Actually, I didn't know much, but of course I was more than capable of teaching her.
These days, I was alone at home and very bored, so I often read the incest novels I saved. I usually hid them after reading them, but one day, I was so engrossed in reading that I heard someone shouting in the yard, telling me to close the file quickly.
I opened the door and saw my sister-in-law smiling and saying to me, "Sister-in-law is here to learn computer from you. Do you have time?" "Yes, come in." My sister-in-law walked into the room and sat on the computer chair. "I want to see your games, the small games that come with the computer." "It's in the program on the start menu." "I don't know how to find it." "I'll help you."
The weather is very hot in the summer. The temperature in my room is very high and I feel stuffy. Even though I turned on the fan, it doesn't seem to work.
My sister-in-law was sitting in the chair, and I was leaning on the back of the chair. I leaned my head next to hers, holding her hand to teach her how to use the mouse. I held her hand with the other hand to familiarize her with the keyboard. I touched her soft white little hand, and the scene in the incest novel I had just read echoed in my mind. The fragrance emanating from my sister-in-law stimulated my nerves, my body gradually heated up, and my penis became a little erect.
I can't stay here any longer or I won't be able to control myself.
Although I really want to have sex with my sister-in-law now, how can I dare to offend her easily without knowing what she thinks?
"Sister-in-law, I'm thirsty. I'm going to go out and drink some water. You can explore it yourself. It doesn't matter. Just click randomly. It will be fine once you get used to it." "Okay, go ahead."
I went out to drink some water and took a shower to freshen myself up.
When I returned to the room, my sister-in-law was concentrating on watching something. She didn't even notice me coming in. I quietly came up behind her without disturbing her, thinking: What is my sister-in-law doing? She's so serious!
Oh my god! I was done, I found my sister in law reading those incest novels that I forgot to hide.
In my sister-in-law's eyes, I am a very normal person. Although I am getting older, my sister-in-law has always cared about me. Now that my sister-in-law has discovered that I was reading an incestuous novel, what should I do?
I was secretly anxious, but my sister-in-law didn't notice me behind her and was still concentrating on reading the novel. I thought to myself, forget it, I don’t want to think about it anymore, let’s just leave it this way for now. I don't bother my sister-in-law either. Always standing behind her.
"Hmm..." I suddenly heard a muffled hum coming from my sister-in-law's throat. Her hips moved back and forth, and her legs came closer and clamped. Ah, it was my sister-in-law who had a reaction after reading the novel.
As time went by, my sister-in-law read an article about incest between her brother and sister-in-law, and her attention became more focused. I could hear her heavy breathing and see a blush on her face from the side. It was the content of the novel that stimulated her.
After finishing reading the novel, my sister-in-law stretched unconsciously, perhaps because she was tired because it took too long. But her hand touched me who was standing behind her, and I didn't even have time to dodge.
“Ah...Brother, is it you?...” My sister-in-law’s face suddenly turned red.
"Well..." I didn't dare to look into my sister-in-law's eyes.
My sister-in-law and I didn't know what to say and remained silent.
. . . . . .
"Brother, when did you come?" After a while, my sister-in-law asked me, "I have been here for a long time."
"Have you been standing behind me for a long time?" My sister-in-law raised her head and asked me, "Yeah." I looked at my sister-in-law, but I didn't dare to look at her again. I lowered my head and asked, "Are these novels yours?"
"No, I downloaded it from the Internet." I hurriedly explained. My sister-in-law turned around and still sat in the chair. "It's well written."
"Ah?" I heard my sister-in-law's words and was a little confused. "Is incest really exciting?" My sister-in-law didn't look at me, but I knew she was asking me, "It should be, the novels all say it's so exciting." I answered. My sister-in-law's hand stroked her thigh and whispered, "Brother, I want to try it now, can you help me?"
"Ah?" I wondered if I had heard it wrong. "Yes, of course I do. In fact, I often fantasize about doing it with my sister-in-law..." I whispered, "But you can't tell anyone. If you agree, my sister-in-law will do it with you. If you don't agree, forget it." "Of course I agree." "Okay"
My sister-in-law turned her head to look at me, then turned away. She didn't move her body, but just leaned lightly on the back of the chair and looked up at the ceiling.
Ah, I get it. My sister-in-law wants me to take the initiative. After all, she is a woman. Even though I have opened it, I still can’t touch it. Then I'll take the initiative.
I walked closer to the chair, hugged my sister-in-law's waist from behind, and kissed her lips from above. The round little mouth, fine teeth and clever tongue are all very tempting to me. I explore my sister-in-law's small lilac tongue in her mouth and greedily suck her sweetness.
It was a long kiss, and they separated after a long time. I was panting, and my sister-in-law's chest was heaving. Looking at her plump breasts, my hands moved up unconsciously.
"I finally touched my sister-in-law's breasts!" I shouted in my heart.
I gently kneaded my sister-in-law's breasts through her clothes. After a while, she had a big reaction. She leaned back with her arms and actively pushed her chest forward, moaning intoxicatingly, "Mm... Mm... Oh... Oh..." "Mm... Brother... Mm..."
My sister-in-law's legs began to rub against each other unconsciously. I stood up and walked to my sister-in-law, smiled at her, and then gently took off her clothes. I took off all my clothes, revealing my huge penis, with the foreskin turned up and the purple-red glans. My sister-in-law stared at me with big eyes, "Brother, your penis is so big and thick."
I spread my sister-in-law's legs and moved her body down a little to make her more comfortable and more convenient for me.
I squatted down, rubbed my sister-in-law's breasts with both hands, and put my head between her crotch. The pubic hair I saw just now was clearer, thick, black and shiny. Love fluid was already flowing out of her dark red labia, which was obviously caused by the arousal just now.
My sister-in-law's sweat, love juice, and body fragrance hit my face, greatly stimulating my sensory nerves. I couldn't help but hold her labia in my mouth.
"Ah..." My sister-in-law made a slight sound of comfort, and her body trembled a little.
I kept licking her, and her labia gradually opened, revealing her clitoris, which was trembling and jumping. My tongue licked along the slit of the vagina from bottom to top, and my tongue touched the clitoris, which aroused a greater reaction from my sister-in-law.
"Ah...brother...you licked...sister-in-law...so well...ah...yeah..." "yeah...yeah..."
My sister-in-law kept thrusting her butt, just like she usually does when having sex.
I also licked my sister-in-law's vagina more vigorously. Love fluid flowed out of her vagina, wetting her labia and flowing into my mouth like sweet spring water.
"Ah...brother...ah...yeah..."
"Yeah... brother... hello... I can... lick... Yeah..."
"Well...sister-in-law...I've never...enjoyed...this...before...well...let me...feel...good...well..."
My sister-in-law's butt was moving with increasing amplitude and speed.
"Mm...ah...ah...so...beautiful...mm..."
"No...Sister-in-law...is coming...ah..."
"ah........."
My sister-in-law let out a long scream, her lower abdomen contracted sharply, and a large amount of vaginal fluid suddenly spurted out of her vagina, and she had an orgasm.
At the moment when my sister-in-law had an orgasm, my mouth was pressed tightly against her labia and I sucked hard. My sister-in-law felt that her vaginal fluid was more than ever before, and the orgasm lasted for a long time.
But I swallowed all of my sister-in-law's vaginal fluid.
"Are you comfortable, sister-in-law?"
"Well, I didn't expect you to be so good at licking. You sucked my soul away. Sister-in-law is the most comfortable today." Sister-in-law said with a flushed face, "Sister-in-law is comfortable, but brother is suffering." I pretended to be sad and said, "What's wrong?" Sure enough, sister-in-law asked hurriedly, "Look." I stood up and raised my swollen and painful penis, "Oh, it's so big and hard, sister-in-law will help you solve it." Sister-in-law touched my penis and said, "Okay."
My sister-in-law lay back in the chair and put her legs on my shoulders, at just the right height, and my penis was facing her vagina.
"Come on, insert your big penis into my sister-in-law's vagina and let me see if it works well."
"good!"
I held the armrests of the chair and rubbed my glans on my sister-in-law's labia, which was covered with abundant love fluid.
"Good brother... come in... stop torturing... your sister-in-law... hurry up..."
My sister-in-law's sexual desire was aroused again by my big penis.
I held the penis with one hand, aimed it at the vaginal opening, and with a "click", I pushed it in with force. With the love fluid acting as lubrication, the penis encountered no obstacles at all.
"Oh, sister-in-law, your pussy is so hot and tight, it feels so good."
"Brother...your...cock...is really...big...and it makes my...pussy...feel...full...and feels...so good..."
“Move…move…ah…”
Encouraged by my words, my sister-in-law finally said what she usually found difficult to say. I thrust my big cock in and fucked my sister-in-law's pussy hard.
"Ah...ah...comfortable...really...comfortable...ah...mm..."
"Yeah...brother...your...cock...is really...powerful...yeah..."
ah. . . ”
"Ah... my sister-in-law's... pussy... was... fucked... over... by... a... big... cock... ah... ah..."
"Ah... it's hitting... my uterus... ah..."
"Well...sister-in-law...likes...your...big...cock...ah...faster...insert...harder...insert..."
"Brother...use...your...big...cock...to fuck...my...cunt...ah...yeah..."
My sister-in-law's moans became louder and more lewd, and my penis became more swollen and harder due to the stimulation.
"Ah... my brother's thick cock... is fucking... my sister-in-law... and it feels so good... Yeah..."
"Ah... it's hitting... my uterus..."
I inserted it forcefully, pulled it out quickly, and then inserted it forcefully into my sister-in-law's vagina again. My scrotum frequently touched my sister-in-law's anus. The hair on my scrotum stimulated the sensitive nerves of her anus, making her more horny.
"Ah... I... am... ascending..."
“Beautiful... so beautiful... harder... brother... harder... ah... ah... ah...”
A large amount of vaginal fluid flowed out with the movement of the penis, wetting my and my sister-in-law's pubic hair. More flowed down my sister-in-law's buttocks through her anus and dripped onto the ground.
The room was filled with my sister-in-law's moans and the "pa ji pa ji" sounds of sex.
"Sister-in-law, your pussy feels so good..."
"A big...cock...fucks...me...so...good..."
"...Use more force... Yeah..."
"I... am... going to... die... Push harder... faster... Push harder..."
"Ah... my sister-in-law... is going to... become an immortal... ah... well..."
My cock was starting to feel a little numb and I knew I was about to cum.
"Sister-in-law...I...am...going...to...cum..."
"Quick...pull harder...sister-in-law...is coming...too...quick...ah...ah..."
"ah..."
I penetrated my sister-in-law deeply with all my strength and could no longer hold back. Thousands of sperms gushed out from the opening of my penis and shot into my sister-in-law's uterus.
“Ah… here it comes…”
The hot semen was sprayed into my sister-in-law's clitoris, and she thrust her buttocks violently to welcome the second climax of today's sex. A large amount of vaginal fluid hit my glans, and her clitoris bit my glans tightly, and her vagina also clamped my penis. It was so comfortable.
Putting down my sister-in-law's legs, I leaned weakly on her body. My sister-in-law also hugged me tightly, and my penis was still shaking in her vagina.
After enjoying the orgasm, my sister-in-law straightened my face and said happily, "Brother, I didn't expect you to be so capable. Today is the most comfortable sex I've ever had!"
I kissed my sister-in-law's sexy lips. "If you are willing, I want to make love with you often, is that okay?"
"Okay, from today on, sister-in-law never wants to lose such a good big cock like my brother again."