By SubstituteWriter
someassembly1964a@gmail.com
Copyright 2026 by SubstituteWriter, all rights reserved
[1,750 words]
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* * * *
This
story is intended for adults only. It contains depictions of forced
nudity,
spanking, and sexual activity of preteen and young teen children for
the
purpose of punishment. None of the behaviors in this story should be
attempted
in real life, as that would be harmful and/or illegal. If you are not
of legal age in your community to read or
view
such material, please leave now.
Big Sister’s Submission
Part 1
(Two sisters who have always been best friends suddenly develop an
interesting relationship)
During the evening on the day on which I turned 17, my 15-year-old
sister burst into my room unannounced and caught me staring at a
website featuring one woman dominating another.
At first, I was so entranced with the video I did not react to her
entrance. She was able to sneak up behind me before gasping, putting
her right hand in front of her mouth in shock and taking a step or two
back.
“Roberta Ann Dean, what are you watching?” she
demanded.
That’s when I realized I had a visitor. Luckily, I had not
yet put any fingers inside myself. I twisted around in my chair, not
bothering to hide the screen and stood up.
It’s not your business Rebecca!” I bellowed.
Her walking into my room without knocking was nothing new. We never
held secrets from each other (so OK, technically I had a secret) so it
was always okay to interrupt each other.
Since the age of five (she was three) we were together nearly 24 hours
a day; kind of like having a twin. That never changed and until I
turned 13, we always shared the same room. Sure, we had disagreements,
but we always resolved things by being open and honest.
We began discussing boys since she encountered a boy in the first grade
who would tease her all the time. Being the wise older sister, I
explained that really meant he liked her and boys always seem to do
stupid things. She took my advice to heart, taking him aside and
confronting him. After he admitted having a little crush on her, Becky
smiled and told him he could give her a kiss on the cheek.
That’s the way Becky went through life, always confronting
people who seemed dismissive of her and turning that into respect.
Becky demanded respect and carried herself in such a way as to command
it. She never slouched, for example, and she’d look you in
the eyes when talking to you. Even her handshake was firm but not
overpowering.
I could never muster the same kind of confidence and often gave in to
avoid conflict. Even when I knew I was right, I would give in. It just
seemed better that way.
I was different with boys though. My mother had taught both of us to
stand up to them. It worked for me, but only with boys I had no
interest in getting to know. I was still a virgin and always managed to
avoid situations that might lead to something like actual sex. But I
did let a lot of boys kiss me and feel me up. I never really liked it
but I didn’t want to get a reputation.
Once (maybe twice), when I was 14, my sister asked for kissing advice.
It started with her using the top of her hand and wrist to practice but
eventually she wanted to know what lips felt like. I agreed to let her
kiss me on the lips. I closed my eyes and then felt her lips on mine,
only for a second, and it felt wonderful. I would have done anything to
feel that again. She was satisfied, though, and that was that.
That feeling didn’t make sense to me. Why did it feel so nice
when she kissed me? I never had that reaction with boys. I started
going to the city library (no way was I going to do it home) and
researched my issues. That led to online forums and eventually
exploring dominance and submission.
I had only begun using my personal computer for such websites a week
before my birthday and I was hooked. Now it seemed like I had something
to explain to Becky.
“Yes, it is definitely my business, Bobbi,”
she responded sarcastically. “How long have you been keeping
this from me?”
“Please Becky, can we just forget about this?” My
eyes were leaking tears.
“No Bobbi, we can’t forget about it. You were so
into it you weren’t even aware I was in the room until I said
something.”
Becky suddenly dropped her stern front and threw her arms around me,
holding my head against her left shoulder blade for about a minute or
so.
“There, there, my sweet Bobbi, it’s
okay,” she purred into my ear. “There’s
nothing to be ashamed of. But we do need to talk about it.”
The video was still running as we moved to sit on my bed. I felt
shameful about it and moved to turn it off, but Becky stopped me,
placing her hand firmly on mine. I did not resist.
“We don’t hide things from each other,”
Beck said gently as she wiped the tears from my face and stroked my
cheek. “You’re my big sister and I love that.
You’ve always been good to me. I’m not going to
stay mad at you. I just want to understand what’s going on
with you.”
I threw my arms around her and sobbed uncontrollably into the fabric of
her blouse. She stroked the back of my head with one hand and rubbed my
back with the other. She waited patiently while I cried it all out.
When I regained my composure, she apologized for being so rough in her
first reaction and let that sink in before continuing.
“Oh Bobbi, everything is okay. I mean, I’m sure
you’ve seen two girls kissing at school. I’ve seen
it even among the sophomores. We know it happens and we know
it’s not a big deal. Gays and lesbians have the same rights
we all share. I just need to understand how you feel so I can support
you.”
Her voice was soothing and helped me calm down. I still
couldn’t look up at her though; I was so ashamed. She
didn’t force me to say anything, patiently holding my hands
in hers and allowing me to feel safe.
I was finally able to look up at her and saw sympathetic eyes looking
back. That look melted away all the bad thoughts and shame. I was able
to share my story.
I told her how I still remember when we practiced kissing and how great
it felt. I had let boys kiss me but it wasn’t the same. I had
always assumed I would get married and have kids. I still wanted kids
but I didn’t have any desire to have a husband.
I explained how I went to the library, thinking I had to hide what I
was feeling. One thing led to another and I realized what I really
wanted was a relationship in which a woman would take charge of me.
“I’ve only been watching these videos for a week or
so. They awakened something in me. I guess I knew things like that
happened in real life but I don’t think I could do it.
I’m too scared.”
“So, you dream about that happening to you?” asked
Becky. “You want it to happen in real life but
you’re just scared. I get it. You need someone that
understands you. Let’s just watch the rest of this video
together and then we can talk some more.”
We sat, cross-legged, on the carpet, with Becky holding the computer in
her lap. I rested my head on her shoulder to get a better view. She put
her arm around me and I felt safe.
After the video ended, Becky closed the computer and turned to me.
“I know you got excited watching that. I couldn’t
help but notice a stain on the front of your shorts. It’s OK.
I was getting a thrill out if too, just not in the same way.”
“I’m sorry …. “
“Don’t be sorry Bobbi, you have wants and needs
just like I have wants and needs. I want you to share with me. I love
you, big sister, and I want what you want. I think we can work
something out.”
“Wh--, what do you mean?”
“I told you I got a little thrill too, only I identified with
the Dominatrix. I thought she was cool and I realized even though she
seemed vicious, she still loved her sub. I think we can practice
together, just like kissing.”
I felt a warmth rush down my chest and into my core. I was turned on by
the idea!
“Do you trust me?” Becky asked.
“Yes, of course I do.”
“Do you solemnly swear to submit to my authority? It would
mean I set all the rules and you must obey or get punished?”
I briefly thought about the consequences of what my sister, two years
younger than myself, might mean before agreeing.
“Remember to call me Mistress from now on,” she
said. “And to show your acceptance, I want you to take off
all your clothes and kneel in front of me while I sit here on the
bed.”
A wave of embarrassment swept through me as I got up and took off
everything but my bra and panties. I was hesitant to be naked in front
of my sister. It felt humiliating. Just as I felt the humiliation,
another warm feeling crawled in my stomach and lower. I took off my bra
and panties and kneeled in front of her, hands over my breasts.
“You have to expose everything to me,” Becky said.
“Put your hands behind your back.”
I obeyed and she spent the next few minutes just looking at me. She got
up and walked around me. She shifted my hands from behind my back to
the top of my head. She told me to get up off my heels and kneel
properly (her words) and then returned to sitting on the bed.
“Here are some rules for now,” said Becky.
“You will remain naked until you wake up tomorrow morning.
I’m going to sleep in your bed, which means you will sleep on
the floor. I’ll give you a blanket. Upon waking, I want to do
your business in the bathroom, still naked. Then you go to the kitchen
and pour juice for both of us. Bring a bowl too and then assume this
position until I’m ready to get out of bed. Do you understand
little one?”
Calling me ‘little one’ made me feel small and was
accompanied by a hot flash speeding down my spine.
“Y-Yes, Mistress.”
“Good girl.”
End of Part 1