I woke up the next morning, naked and with my wrists bound behind my back. I squirmed, twisted, and struggled, but I couldn't get free from my restraints.
Then I remembered; my sister had buckled the restraints around my wrists the night before. Our relationship had changed recently, and I had encouraged her to treat me like I was her lesbian sex slave. After some initial awkwardness, Holly took on the mantle of my loving mistress.
When I awoke, she was sleeping next to me. Of course, while I slept naked, she wore an oversized t-shirt that covered her body all the way down to mid-thigh.
My sister is incredibly beautiful, but as she slumbered with her blonde hair spilling all around her face and pillow with her eyes closed, her eyelashes seemed somehow silkier, her lips seemed poutier, she seemed even more tantalizing asleep than she did awake. I just wanted to scooch closer to her, nuzzle my face against hers and kiss her.
It was difficult with my arms bound behind my back, but I crawled on my belly, leaned my face in and kissed Holly on the lips. And then, just like in a Disney movie, my kiss awakened the beautiful damsel.
"Hey, you," my sister said softly after her eyes had fluttered open.
"Hey, you," I said back. "Good morning."
"Good morning, yourself. I must say, I like being awoken by a pretty girl kissing me on the lips. It's a great way to start my day."
Holly stared adoringly into my eyes for a time, and then she added, "Although, I can think of something that would be even better than a kiss."
I raised an inquisitive eyebrow at her, expecting her to elaborate. She pulled down the covers, and pulled up the hem of her t-shirt, exposing her loins. Her vulva was almost as smooth as mine, with just a neat, narrow landing strip above her pubes.
"A beautiful slave girl could lick me to my first orgasm of the day."
I squirmed awkwardly and leaned on one arm. Maneuvering my face down towards her crotch with my hands bound behind my back would be possible, but it wouldn't be easy. I crawled, and slithered, and made my way arduously down the mattress until my face was in between my sister's legs.
When I got there, I wasn't surprised to see that my sister's pubic lips were plump and glistening with her juices. She has an obvious crush on me and having me naked, in her bed and at her mercy is enough to get her sexually aroused.
I worked my mouth and my tongue into her wetness and squirmed, straining my arm muscles as if I were trying to break free from the leather restraints that forced my wrists behind my back.
If I had my hands free, exploring the inner and outer folds of Holly's vulva would have been a lot easier; however, I did the best I could within the limitations of my bondage. Holly's clit was easy for me to find, as it was large and swollen and poking slightly out of its hood.
I trapped it gently between my teeth. Holly seemed to enjoy that and made a great number of vowel-sounds that sounded very contented and blissful. And when I began to suck on her clit, she made a series of gasping sounds that told me she was delighted with my performance.
"We should do this every morning," my sister exclaimed in between gasps and moans. "Oh, God! Ohh!"
It was declared that every morning I was to wake my sister by working my face into her crotch and eating her pussy. Failing to do so would result in me being punished. After Holly got out of bed, she updated and printed up a new slave agreement and had me sign it.
After I signed it, I told her about the wet dream I had the night before.
"So, you were the property of a women's college?"
"I think so," I replied. "Some of the details were fuzzy, but I owed tens of thousands of dollars in student loan debt and to pay it off I had to have sex with students and teachers and campus security guards. I was forced to be naked the entire time. I guess that was so everyone on campus would never forget that I was a sex slave and that they were allowed to do anything they wanted to me, no matter how kinky or perverted."
"You're a real exhibitionist, aren't you?" Holly asked.
"I guess. Maybe?"
"Being naked and on display for an entire campus of college students and teachers. Sounds like exhibitionism to me."
"There's a kink I read about online. It's called CFNF. It stands for clothed female, nude female. I feel that describes me more appropriately."
"It still sounds a lot like exhibitionism," my sister commented. "Only instead of men staring at your perfectly shaped buttocks and bald pubes, it's women. Not that there's anything wrong with that."
"It's sort of like lesbianism and exhibitionism mixed in together," I said.
"And maybe a little bit of BDSM," Holly said. "Because you're definitely the submissive one in this scenario and the clothed women are the dominant ones."
"Oh, definitely."
"It's too bad we can't find a school that will let us do that for real. I think you would look cute being naked on campus while an army of lesbian students and teachers felt you up and ogled you."
"And me being bound and gagged and helpless to stop them," I added.
My sister took a few seconds to mull that over and then she observed, "We're going to that party tonight. There won't be an entire campus of women there, but we can strip you naked, get you bound and gagged and get a few clothed women there to feel you up and ogle you."
* * *
Since people at the party were going to be staring at my body, I wanted my body to look as firm and sculpted as possible. I spent much of the day doing exercises to firm up my abs, my glutes and my obliques.
Holly joined me for a lot of the exercises, but while I exercised in the nude, she wore a smart spandex unitard. The contrast between her stylish outfit and my blatant nudity made me feel even more exposed. And some of the exercises I did left my pussy explicitly on display. A fact that my sister took advantage of multiple times.
Reverse planks and side planks with legs lifted were the most obvious examples of how my exercises left my bare loins exposed. Sometimes my sister would smile wickedly at my exposed pink slit. Other times she would walk right up to me and place a hand between my legs. I whimpered and snapped at her for grabbing my sensitive labia, but she just smacked me across my thigh and insisted I allow her to do it.
"If you're going to be a sex slave, you have to get used to free women grabbing your naughty bits," she insisted as she rubbed her fingers up and down my swollen labia. "Slaves that complain about getting felt up are likely to get punished.
She pinched my pubic lips together before releasing them, getting my juices all over her hand. She wiped her hands off on a towel, and went back to doing her own exercises, but twenty or thirty minutes later, she was grabbing me between my legs again. I had mixed feelings about how I should react. On the one hand, I wanted to be submissive to my sister. I wanted her to be proud of how obedient I could be for her.
On the other hand, I got a throb in my loins every time she talked about punishing me. A certain part of me was thrilled at the prospect of being punished by my sister. Especially if I could have her punish me in front of a prurient audience.
At one point I was doing a glute bridge with my pelvis lifted up exceptionally high and my legs more than shoulder width apart. In this position, my vulva and plump, glistening pubic lips were indecently exposed. It was as if I was raising them up in offering to some sort of pagan goddess. Holly couldn't resist taking advantage of my vulnerable position. She marched over and thrust her hand between my legs. She felt how wet I was, and my whole body trembled as she found the entrance to my vagina and plunged a finger inside of me.
"Holly!" I admonished her. "How am I supposed to concentrate with you doing things like that to me?"
She withdrew her finger, gave me a wicked grin, sucked my juices off her fingers and then said, "Is that any way for a slave to talk to her mistress?
I took a deep breath, gathered my courage, and said, "It's not. You should really punish me for my shameful behavior."
Holly had a brief look of confusion on her face. Apparently, she wasn't expecting that sort of reaction from me. I elaborated by saying, "When we get to the party, you should explain to Anja and everyone else that I've been a bad slave. You have no choice but to punish me, and to increase my shame and humiliation, you'll have to do it in front of them. Getting thrown naked over my sister's knee and being spanked like a naughty schoolgirl while an audience of imperious, fully clothed women watch might just be enough to teach me a lesson."
The look of shock and confusion on my sister's face was slowly replaced by an enthusiastic grin. Once she understood the rules, she was happy to play my game.
* * *
Of course, working out the way we did caused both Holly and me to work up a sweat. We both ended up in the shower together, as I'm no longer allowed to shower by myself. Holly declared there's too big a risk of me masturbating if I'm given any degree of privacy.
Holly stood in the shower behind me and proceeded to wash my naked body once we were both soaking wet.
My sister grabbed a bottle of bodywash and lathered and rubbed and teased every inch of my naked body. Her hands roamed all over my back; she washed my neck, then my chest. She lingered forever on my naked breasts, running her slippery hands over my nipples until they felt inflamed, swollen and embarrassingly erect.
