Between Sisters and Brothers (Transformation Series Adult Novels)

Three years ago, I had just retired from the army and moved from Hsinchu to Taichung to work for a food company.

At that time, my sister had been married in Taichung for more than a year and had given birth to a boy. Because she was also working, the child was taken care of by my mother-in-law who lived in Miaoli. Everything was very ordinary and normal.

But at the end of that year, a train trip back home for New Year's Day changed the lives of my sister and me.

During the New Year's Day holiday that year, my sister originally wanted my brother-in-law to drive us back to our home in Hsinchu to celebrate the holiday. However, on the day before New Year's Day, my brother-in-law had something urgent to do, so we had to take a ride back by ourselves.

There was no choice. I hadn’t bought the tickets in advance, so I had to squeeze on the train with my sister to go home.

On December 31st, at around 7 o'clock in the evening, the train station was crowded with people, all of them were passengers returning home.

I followed the crowd through the ticket gate and finally squeezed onto the train, but there was almost no room to turn around.

After passing Miaoli, the carriage became even more crowded, and as the crowd rose and fell, my sister and I were squeezed together face to face.

At first I didn't feel anything, but as the train swayed, my sister's breasts rubbed against my chest and abdomen, and my little brother was pressed against my sister's abdomen (I am a head taller than my sister).

Although we all wanted to move seats to avoid this embarrassing scene, we were unable to move in the carriage, and then an even more embarrassing situation occurred.

My little brother woke up at this time!

To be honest, I didn't have any evil thoughts towards my sister at that time. It was purely a physiological reaction.

Of course, it didn’t take long for my sister to find out what was going on.

She raised her head, looked at me with a smile, then lowered her head again.

I was sweating all over. The more I wanted my little brother to lower his head, the harder it became.

I felt my sister's soft breasts touching my body lightly and heavily. During the whole ride, I only remember that my little brother was pressing against my sister and her breasts were against me.

Although it was very embarrassing, my sister didn't say anything. She had several opportunities to change her posture, but she didn't move.

And in the meantime, we arrived in Hsinchu.

On the way home, we didn't talk. I kept thinking, what was my sister thinking?

Will she think I'm a pervert?

Is she angry?

But I didn't dare ask her.

On the first day of the New Year's Day holiday, my parents said they were going to visit an old friend and would not be back until the next day.

My sister was out all day and didn't come back until the evening.

As soon as she got home, my sister took a shower. After the shower, she only wore a loose T-shirt that just covered her buttocks, and came out to walk in front of me.

Although she has given birth to a child, she still maintains a very good figure, which amazes me.

My sister saw me staring at her, rolled her eyes at me and said, "Don't stare at beautiful women with lustful eyes!"

I swallowed and replied, "I only saw an old lady~~"

She threw the towel at me and picked up the hair dryer to blow-dry her hair.

Just as she raised her hands, the T-shirt she was wearing was also pulled up. My eyes lit up, and a small, white pair of panties suddenly appeared in front of me, and then was covered again.

I just felt a lot more saliva all of a sudden, and my little brother quickly stood at attention.

My sister was combing her hair in front of me as if nothing had happened. More than ten minutes later, when she finished combing her hair, I was still staring at her.

She turned around and gave me another look: "You haven't finished yet! Go take a shower!"

I was reminded of her and rubbed my nose and went to the bathroom to take a shower.

While washing, I was thinking: Isn’t she angry with me for what I did the day before?

Judging from my sister's tone, did she deliberately let me see her underwear?

She is my sister, is this considered incest?

incest!

My heart beat suddenly faster. For the first time, I felt like I was a little perverted. I didn't expect that the idea of ​​incest would excite me.

What is my sister thinking about?

She will agree with us...

As I was thinking about it, I quickly finished my shower and decided to go and confirm it.

After taking a shower, I put on only a pair of shorts with my upper body bare, and planned to walk in front of my sister to see how she would react.

When we got to the living room, she was sitting on the sofa watching TV. She was still wearing the same T-shirt and hadn't changed her clothes. But she was hugging a pillow to her chest, so there was nothing much to appreciate.

Seeing her randomly selecting channels with the remote control, I decided to take the initiative.

"There's nothing good to watch! Just watch the locked channel!"

“I don’t have a decoder at home!”

Sister said.

"Who said that? Of course you should only use it when you need it! Otherwise, it would be so embarrassing if your parents saw it by accident...Would you like to see it or not?"

"Let's see if there is one! Anyway, my parents won't be back today."

I ran into the room in two steps, took out the decoding stick and installed it on the TV.

Turning to the locked channel, the heroine of the porn movie was screaming loudly. I glanced at my sister and she spoke first.

"Do you often watch this when you have nothing to do?"

"Occasionally, but not often. The ones on Channel 4 are all pixelated, nothing exciting!"

I said.

"What! This isn't exciting at all?"

She pointed at the man and woman on TV who were having sex in exaggerated postures.

"If you want, watch uncensored porn!"

I challenged.

"What about you? Would you reject porn?"

"It's okay! I've watched it a few times. But I think the girls in these movies scream too exaggeratedly..."

"Didn't you ever call out?"

I asked cautiously.

"I won't call you like that..."

My sister still had a nonchalant expression on her face, staring at the TV.

I am a little confused. My sister thinks that talking about "sex" is a normal thing, so is it okay to discuss it with me in this way?

"You watch this often. Will you lose your feeling after watching it too much?"

This time it was my sister's turn to ask questions.

"Feeling? ...You mean..."

I'm playing dumb.

"…It's a physiological reaction…"

"Of course! When it feels too rich, I'll DIY it!"

"You mean masturbation?"

"Masturbation, handjob, handjob, whatever you want to say..."

"So how are you feeling today?"

It seems like my sister is testing me.

"Whatever you want to do, you can talk about it in your room later..."

"If you want, you can do it next to me... I'll pretend I didn't see it!"

Hearing this, it confirmed that my sister didn't just want to discuss sex with me.

"If you don't mind..."

"What does it matter? I'm your sister."

If you dare to watch, I dare to do it!

I think.

So I stood up, and under my sister's gaze, I took off my shorts, including my underwear, and sat down next to my sister.

It was the first time I grew up and took off all my clothes in front of my sister. It felt strange, but also very exciting. My little brother couldn't help but jump.

My sister stopped watching TV and just stared at me holding my cock and stroking it up and down.

After doing it for more than ten times, I saw that she was enjoying it, and I thought the next thing should be a piece of cake.

"You seem quite interested. Haven't you ever seen a boy masturbate?"

"…"

She shook her head.

"Didn't your husband show you how to do it?"

"…"

He shook his head again.

"…Would you like to give it a try?"

I tried.

My sister looked at me for a few seconds, took away the pillow, moved closer to me, and slowly stretched out her hand.

When my sister held my little brother, it twitched twice with excitement. My sister smiled and said, "It's quite energetic!"

As he said that, he started to help me masturbate.

I can't believe my sister is giving me a hand job!

I felt so comfortable and excited, and was looking forward to what would happen next.

Slowly, my sister leaned her body towards me. My hands were idle, so I started to wander around her body, from the back to her chest. I gently kneaded her breasts, and even through her clothes, I could feel her nipples gradually hardening.

So, I moved my hand slowly downwards, and because my sister was only wearing that T-shirt, I could easily touch her thighs, and then slowly moved to the base of her thighs.

When my hand touched my sister's panties, her breathing became noticeably heavier and her legs automatically opened a little.

I could feel with my fingers that the part of the panties covering the hole was already a little wet. Without thinking, I inserted my middle finger into the hole from the edge of the panties and easily found the entrance to the mysterious paradise. What greeted my middle finger was the wet, slippery and hot love juice. Sizzle!

In an instant, my middle finger was completely inserted into my sister's vagina, and my sister made a soft "Hmm~" sound in her throat.

Can you imagine what that was like?

The room was filled with the moaning sounds from porn movies. My sister was stroking her cock while I inserted my finger into her vagina. I was so 'frozen' that I ejaculated almost the moment I inserted my finger.

I just felt streams of semen spurting out, and the pleasure was really incomparable to that during DIY.

I held my sister's waist tightly with one hand, and the middle finger of the other hand was deeply buried in my sister's wet and hot vagina. It felt like a long time had passed before I recovered from the pleasure of ejaculation.

And my sister was helping me wipe and clean it with toilet paper.

I pulled out the fingers that were inserted in my sister's body and was about to say something like "You're wet!", imagining further developments. But my sister lowered her head and said nothing, and the smiling expression on her face was gone. After wiping, my sister stood up and said without turning her head: "I'm going back to my room to sleep, you should go to bed early too!"

After saying that, she went back to her room, leaving me naked sitting on the sofa with a soft cock and a wet middle finger.

Are we overdoing it?

Is my sister afraid of the taboo of incest?

I really wanted to rush into my sister's room to find out what was going on, but suddenly I felt weak all over and fell on the sofa.

The next day, when I got up, it was almost noon and my parents had just returned.

My sister said to me nonchalantly, "Strange, you are not born in the Year of the Pig, how can you sleep so much? After you have slept enough, you need to eat again!"

I tried hard to find some information about the impact of last night from her tone, movements and eyes, but I failed.

My sister is usually a person who shows her emotions on her face, so why can't I tell what she is thinking at this moment?

In the evening, my brother-in-law came to pick up my sister and said he wanted to go to Taipei to play for a while before going back.

As a result, there was no chance to ask clearly.

After returning to Taichung after the New Year's Day holiday, my mind kept revolving around what happened that night: Is what I did to my sister considered incest?

Why does the idea of ​​incest turn me on so much?

My sister must have seduced me, right?

Why did you back off at the last minute?

Afraid of touching this taboo?

I think I must make things clear with my sister.

I knew my brother-in-law would go play golf every Sunday morning, so I called my sister on Saturday night and said, "Sister, I want to come to your place tomorrow morning to talk about what happened last week. I will be there at 7 o'clock. If you don't want to talk about this... don't open the door. I understand."

After saying that, he hung up the phone without waiting for her to answer.

The next day, I rode my motorcycle to my sister's house. My brother-in-law's car was not at the door, so I was sure he had gone out to play ball.

I pressed the bell and waited.

Soon, the door opened and we walked into the living room in silence. I looked at my sister, and she finally spoke first: "Brother. Last week...we shouldn't have done that..."

"Sister, you should agree that we both wanted to do this that day, right? We are both in our twenties, you want to do it, I want to do it, why not? And no one knows, we won't bother anyone else!"

"But I'm afraid I might hurt you..."

"Don't be silly, sister. I'm old enough to know what I'm doing and what I want!"

"But, we are siblings, this is... incest, it's a taboo..."

"It's because it touches a taboo that it attracts us... isn't it?"

I looked at my sister.

"this…"

"You want to do it, but you're still afraid, right?"

She nodded: "Actually, I wanted to do it last week, but there seemed to be another voice in my head telling me not to do it..."

"Maybe we were too impatient last week. We did those things all of a sudden, and you got scared and backed off temporarily..."

"Um…"

"If we take it slow... follow the feeling of our bodies..."

"Follow the feeling of your body?"

"Sister, does the thought of incest make your heart beat faster and make you excited?"

"…"

He nodded slightly, almost imperceptibly.

"Think back to last week, how it felt when you saw my penis, how it felt when you masturbated me, how it felt when my hands touched you, and how it felt when my fingers were inside you..."

My sister took a deep breath.

"...Sis, if you don't tell me and I don't tell you, no one will know what we did..."

There was silence.

After a few minutes, she finally took a breath, looked at me and said, "I'll come to your place tomorrow..."

marvelous!

She finally agreed!

"Sister, can't I do it now?"

I'm worried that she will change her mind again tomorrow.

"No, my husband's playing time is not fixed. Sometimes he plays all morning, and sometimes he goes to the court to say hello to his golfing friends and comes back."

"Maybe he just played all morning today!"

I persevered and took action.

Knowing that my sister had agreed, I leaned gently against her body.

I put one arm around my sister's waist, massaged her thighs with the other hand, and gently touched her neck with my lips.

My sister stopped talking and the living room became quiet, but an atmosphere of lust immediately filled the room.

At first, my sister was a little nervous and sat on the sofa, not daring to move. However, after my gentle touch, her hands began to wander around my body.

Since we didn't know when my brother-in-law would come back, the incestuous caress between us added more excitement.

After a period of frantic caressing, I lifted up my sister's skirt, and what came into view was still white panties, but the style was much more conservative.

Without saying a word, I buried my head between her legs and kissed her thighs and around her panties.

When I kissed near her vagina through her panties, I could already feel the wet and hot touch, but I knew I shouldn't be too impatient and insert my fingers in right away like I did last time.

So I took off my clothes first, and then helped my sister take off her top and skirt one by one.

When my sister was down to her bra and panties, I paused and asked her, "Are you okay?"

She nodded, and I kissed her smooth belly and stroked her inner thighs.

Then, put your hands behind my sister's back.

When I gently unhooked my sister's bra, I found that her breasts were very beautiful. Although they were not very big, they were very firm. You couldn't tell at all that she was already a mother of a child. Her breasts were beautifully shaped and her areolas were of moderate size.

While I was gently caressing my sister's breasts, my other hand was slowly removing the last barrier between my sister and me.

From the very beginning, my sister only made very suppressed "hmm~" and "ah~" sounds, which reminded me of the last time I watched an adult movie, my sister said that she didn't scream like that, so how did she scream?

Will it be so quiet until the end?

When my sister's thick pubic hair and her flooded pussy were finally presented in front of me, I no longer had the heart to caress her.

I asked my sister to lie down on the sofa, and between her legs which were completely open, I used my penis to touch and rub her labia and clitoris.

Finally, I took my sister's hand, held my excited cock, leaned over and whispered in her ear, "Sister, take me inside you!"

My sister closed her eyes, held my cock in one hand, guided me, and slowly moved to the forbidden area: the vaginal opening, and gently pressed my butt with the other hand.

I knew that the most taboo moment had arrived. I sank my buttocks and my hard penis entered my sister's vagina unhindered.

My sister let out a "hmm~" and hugged me tightly.

Oh my God, this is not a dream, I really inserted my penis into my sister's vagina!

At that time, I was so excited that I almost ejaculated. I took a breath and paused for a few seconds before I started thrusting.

My sister still made small "hmm" and "ah" sounds intermittently. Although there were no passionate shouts, it was my sister's moans after all, which was more stimulating to me than screaming and moaning.

After thrusting in and out about ten times, I felt the stimulation was too great.

My penis contracted, and although I tried my best to hold it back, it was no use, and it spurted out solidly, with a series of twitches, and the thick semen was completely shot into the depths of my sister's vagina.

After the pleasure of ejaculation subsided, I lay on my sister's body in disappointment and said, "Sister, I'm sorry, I don't usually do this, it's just too comfortable..."

My sister patted my head and comforted me: "Silly boy, there is nothing to be sorry about."

"But you must not have..."

"I feel comfortable too! It's hard to describe the feeling... Having sex with my own brother... I can't put it into words. Knowing that it's my own brother, entering my body... I'm a little scared, a little excited... I also seem to feel a little guilty... My heart is beating so fast, it seems like it's going to jump out..."

"I will make you feel more comfortable next time..."

I suddenly remembered something important: "Sister, is it okay for me to cum inside you?"

She tapped my head gently and said, "You only remembered it after you had already ejaculated inside me! By the time you remembered it, it would be too late! It doesn't matter, I'm on birth control and taking birth control pills!"

My heart immediately relaxed.

I said to my sister, "Let me help you wipe it!"

My sister closed her eyes and nodded.

I slowly pulled out my much-shrunk penis from my sister's vagina.

All of a sudden, milky white semen flowed out. It was such an obscene scene – the brother's semen flowed out of the sister's vagina!

Maybe it was the stimulation of such a scene, when I was wiping it with tissue paper, I found that my penis was slowly erecting again!

When my little brother was fully recovered and ready to fight, I threw the tissue on the ground, leaned over my sister, and whispered in her ear, "Sister, I want to do it again!"

My sister opened her eyes and gently pushed me away: "Stop it, it's not possible to do it again so soon."

Before she could finish her words, I had already inserted my penis into her vagina.

She let out a soft "hmm~" again, her face showing an expression of both comfort and surprise, but she soon closed her eyes and enjoyed the pleasure of incest to her heart's content.

This time I put all my effort into it, sometimes fast, sometimes slow, sometimes shallow, sometimes deep, my hands and mouth were not idle, and my sister also cooperated with me completely.

I don't know how long I had been thrusting, I just felt that when my waist was about to run out of strength, my sister's whole body seemed to tense up, and she pressed my butt with both hands and asked me to "faster... a little bit." Of course I followed her instructions and increased the speed of thrusting.

Before long, my sister's back arched and her body seemed to be tenser, and I felt a sharp pain in my butt. It turned out that my sister's fingers were tightly gripping my butt.

I knew this was an important moment and I couldn't stop and make a final sprint.

My cock seemed to feel the strong tightening effect brought by my sister's orgasm. With each deeper penetration, it reached my critical point and ejaculated again.

At this time, my sister seemed a little dazed and opened her mouth, calling out "Ah! Ah! Ah!" with intense panting.

After I ejaculated, I lay powerless on my sister. The only sounds in the room were our breathing.

I think I will never forget this sex experience. The incest combined with perfect timing and the climax of incomparable excitement was the ultimate in sex.

As her breathing slowly calmed down, I let my penis slowly slide out of my sister's vagina, then gently turned off my sister's body, sat on the floor, and admired the afterglow of my sister's orgasm: her chest was rising and falling rapidly because of her panting, and her beautiful breasts were vibrating gently. Her limbs were spread limply on the sofa, and her pussy was a mess after my hard sprint. My semen and my sister's vaginal fluid had already overflowed onto the sofa.

“Huh… is this the climax?”

My sister talked to herself.

"No way? You've already given birth to a child... Is this your first orgasm?"

Although I know that most women, even in their entire lives, have never enjoyed a real orgasm.

"I don't know, but the feeling just now was the first time I've ever experienced it. My mind, in the last moment... was completely blank... My body... I can't describe it. And I've already used up all my strength..."

"This is also the first time I feel that sex can be so enjoyable!... Is it because of our incestuous relationship?"

I said.

"Maybe?... I felt a little guilty at first, but now I feel... it feels great."

"I think so too...Are we being a little perverted?"

"Who says we are siblings?"

My sister smiled.

"Sister, you haven't just recently started thinking about incest, have you?"

It suddenly occurred to me.

"Ah! You figured it out?... Do you remember, during the summer vacation of your junior year, you came to Taichung to see me..."

"Remember! I spent a night in the small suite you rented!... Could it be that it was from that time..."

"Yeah, that was the time! You slept on the floor that night, but the next morning, your private parts were exposed! Did you know that?"

I shook my head.

"When I woke up in the morning, your penis was sticking out of your shorts... I'm not afraid of you calling me conservative, it was the first time I saw a man with an erection... I was very curious, I observed it for a long time and even touched it a few times, but you were sleeping so soundly that you didn't even notice it."

I looked at my sister without saying a word, and she continued.

"Although you went back that day, I can't forget the appearance of your little brother. At that time, I was very scared, wondering how could I have a 'sexual' interest in a man's erect penis, and it was my own brother! I also thought of the word 'incest' and felt that I was so perverted. However, the more I told myself not to think about it, the more I thought about it. During that period, I would feel very uncomfortable when I saw you when I went home! Fortunately, not long after, I met my current husband's pursuit, and slowly I didn't think about it often. But, occasionally when I think of it, my heart still beats fast..."

I still didn't say anything and gently kissed my sister's white belly.

"That day on the train, your little brother kept pressing against me, which brought my thoughts back to that time. During the time I was on the train, that scene kept appearing in my mind, so I wondered if you would reject this idea. Then, it happened that on New Year's Day, my parents were not at home, so I plucked up the courage to see your reaction..."

"Luckily I understood your body language!"

I said.

"Well... we really did it... incest... will you regret it?"

My sister stroked my head gently.

"Of course not! I think it's great! And I hope we can continue... okay?"

My sister nodded.

Thinking that my brother-in-law might come back at any time, I picked up my sister and went to the bathroom to clean up.

After cleaning up, we helped each other put on our clothes and snuggled on the sofa for a while. I reluctantly rode my motorcycle back to my place.

This was the first time for me and my sister.

My sister and I have been maintaining this incestuous relationship for more than three years, but we are not addicted to it.

She has a husband and I have a girlfriend. We only have sex once every two or three weeks at most, but every time we do, it is still extremely passionate and wonderful.

Maybe it’s because of incest!

No third party knew about this relationship.

To outsiders, we are a pair of siblings with a very close relationship. In fact, our relationship has become even better because of this.