Day by Day Ch. 01

Day by Day Chapter 1

This is an incest story with a twist. If incest stories are not your thing, then please move on. Otherwise enjoy the play between twins. This also a longer story (8700 words) so sit back and enjoy the buildup.

Steven Day – 21 years old, older twin by 10 minutes. Five foot eleven, athletic, brown hair kept short. Currently enrolled in University as a Junior studying Sociology.

Sarah Day – 21 years old, five foot seven. Brunette with hair to her shoulders, athletic with a toned body, C cup boobs, tight ass. Currently enrolled in University as a Junior studying Biology and would like to be a Vet someday.

Sarah and Steve shared an apartment at school to save their parents money. They had an arrangement that if either of them wanted some privacy, they would try and arrange it ahead of time so no one would be embarrassed. Every once in a while, there was a mix up in communication and one or the other would interrupt their twin’s fun. They got used to living together and didn’t mind walking around in their underwear or their PJ’s.

This story will be told from each of the twin’s perspectives as we go along. Pay attention to who is talking.

Steve

It was my turn to have the apartment by myself. Well, not by myself but with a woman that was more of a friend with benefits. We liked each other but knew we would not be in it for the long term. However, the sex was really good, and we both knew how to push each other’s pleasure centers. Amy looked a little like my sister and I always wondered what would happen if Sarah and I ever did the deed.

Amy was licking and sucking on my cock as we lay naked on my bed. I watched her slide her mouth down my cock and suddenly I imagined that it was my sister sliding her tongue all around my erection. My cock suddenly got harder as she stroked my balls and suckled on the head. She looked at me and the harder I got the wider her eyes got.

“Steve, are you thinking about Sarah again?”

I nodded my head as she told me to come in Sarah’s mouth. We had fantasized about this before as Amy had expressed a desire for my sister. Thinking about Sarah and Amy and I naked in the same bed tightened my balls and I started coming. Amy drank it all down and when finished, she had a big smile on her face.

Sarah

It was Friday night, and I was studying at the library since Steve had invited Amy over for some private time. I had one of the private study rooms all to myself as I thought about what they might be doing in my absence. The thought of Amy’s mouth on my brother had my nipples hard. I knew that it was taboo to think of my brother like that. I also wondered if Amy liked women, because I often caught her looking sideways at me. Sometimes she would brush up against me, especially if we were in our galley kitchen together. I had never had a relationship with another woman and would probably never start one on my own.

I had been assigned a paper on the dual sexuality of animals. How some animals at times can change their sex to suit the situation. This usually happened more in the lower species such as worms. About 33% of all species (not including insects) can be hermaphrodites of one kind or another. The three main groups include:

Protandry: Where an organism develops as a male, and then changes sex to a female.

Protogyny: Where the organism develops as a female, and then changes sex to a male.

Bidirectional sex changers: Where an organism has female and male reproductive organs but may act either as a female or as a male during different stages in life.

I wondered what it would be like to have a penis and penetrate another female and experience a male ejaculation. Would the feeling be as intense as the orgasms I have as a female? What if I became my male twin and my brother became my female twin? I let my mind wander about all the possibilities. If my twin were the same sex as myself, would we enjoy it? I knew what it was like to suck a cock, would it be the same if I had a cock also? Or the opposite, what if we were both female and enjoyed licking each other pussies?

Loki

As the Norse God of Mischief looked down on the ramblings of Sarah, an idea came to mind. Here were two very curious individuals who might make good subjects for one of his mischievous ideas. How about we make changes to these two individuals to see how they would handle a complete change of body types. I will change them for a 24-hour period and observe their thoughts and actions. If successful, I will change the period of time to longer and longer periods of time. Would they appreciate the changes, or would they balk? Only time will tell.

Steve (female)

I awoke Sunday morning and felt like I had a hangover. My body didn’t feel right. I was lying in bed thinking about Amy and my sister. Would it not be fun to get the two of them together and watch Amy seduce Sarah? I lay there thinking about the two of them licking each other’s pussies while I watched.

I felt a strange tightness in my chest, and I felt like I needed to get up and pee. It was still dark out and the room was very dimly lit. I reached up to brush the hair out of my eyes. Wait, I had never had to do that before. My hair was across my forehead, and I brushed the silkiness out of my eyes. My skin on my forehead felt much softer. I slid my hands over my face and felt the same soft skin.

I had only worn a pair of boxers to bed, so my chest was bare. I ran my hands over my neck and down to my chest. Gone were the muscles that I had so carefully cultivated. All I felt was soft mounds capped by large nipples. What was happening to me? I continued to explore following the small waist and then over what appeared to be very womanly hips. Shocked, I quickly reached for my manhood but all I felt were female lips and my hand came away wet. I smelled and then licked my fingers tasting the most glorious pussy juice. Again and again, my fingers collected more of the familiar flavor as I savored it. What had happened to my cock? I felt like I was still me in my mind, but my body had been transformed into a female shape that was quite pleasing.

I rubbed my newly found clitoris, and my body tingled all over. I felt the ache deep inside me as I continued playing with my newfound toys. My breasts ached to be touched so I took one hand and grasped the flesh that was firming up nicely. As my palm crossed over my nipple, I let out a gasp of pleasure that seemed to travel straight to my pussy. Within minutes, I could feel the wetness grow between my legs. I spread them and inserted a finger into my new pussy. Oh, my, that felt so good. With one hand stroking my fingers in and out, I took the other hand and rubbed my clit.

All of a sudden, I felt my whole-body tense. My breathing came in gasps and my tummy tightened while my legs shook. It felt like my whole body was having an orgasm. Wow, this sensation was so different then when I had come as a man. As I calmed down from the intensity, my hands continued to explore and within minutes, I came again in a more powerful orgasm.

I curled up in a ball and lay there panting while my body slowly returned to normal. Don’t get me wrong, I loved the feeling of ejaculating as a man, but this was so pleasurable, I could not make up my mind which I preferred. Eventually I was exhausted and drifted off to sleep again.

Sarah (male)

I had been up late researching for my paper. I feel asleep on my bed in my bra and panties. I had taken my hair and put it in a ponytail for sleep. In the morning, I got up and half asleep, I headed to the bathroom in the dark. I pulled my panties down and sat down on the toilet seat. Something was not right. I felt like my pussy was different and when I let out the stream from my bladder, it felt like the urine was not coming from between my legs. Finishing up, I took some toilet paper to wipe myself. When my hand went to wipe, it was not me. I had an appendage where my vagina should be. Shocked I stood up and flicked the light on. Standing there in the mirror was my brother, short hair and all. I quickly removed my bra and panties as I stood there staring at myself in the mirror. My brother was looking back at me, and I had to shake my head to clear it.

When I opened my eyes, here was his male body, although I had never seen him completely naked since we were four. His penis certainly had grown in that time. While I examined his muscles, I felt a stirring in his cock. It started to lengthen and thicken. Wow, my brother was well built. I was staring at a cock almost eight inches in length and thicker than any I had sex with over the years.

My hand started stroking my cock as if it had a mind of its own. I was achingly hard now. My balls were growing larger, and the head of my penis was getting very sensitive. I kept stroking and stroking, and the pleasure kept increasing. I was hooked on the way it felt. Rubbing faster and faster, my balls tightened, and my cock vibrated as ropes of sperm shot out of the head and into the sink. I kept stroking until I was too sensitive to continue. Gasping in pleasure, I sat down on the toilet for a moment of rest.

What the hell had happened to me? Where was my body? I still felt like a female in my mind but the obvious male body before me was not mine. How did this happen? I had studied about lower life forms adapting their bodies from male to female of vice versa. But I knew of no known cases of it happening in humans. I tried to think back to what I had done differently before going to bed, but nothing in my routine changed except for not wearing a nightgown to bed because I was tired.

If I had become male, what happened to my brother, had he been affected by a change as well? I pulled my panties over the still semi-hard cock and went to my brother’s room.

Opening the door, I saw myself laying curled up in bed. The room smelled of a female in heat. I recognized the smell as one when I have masturbated in my own bed. I walked over to the bed and shook the feminine shoulder to wake my brother. Brushing the hair out of his eyes he looked at me in shock.