This is based on the story "My Mom is a Slut" by darkride (with the author's permission).
Chapter 9
Sandy woke with a start, the dim morning light trying to peer in through the heavy curtains. She tried to calm her racing heart. It was just a dream. A dream about being a sex slave... Her subconscious had been dealing with her and Steven's decision whilst she was asleep. As the teen came to grips with reality again, she remembered an important fact.
Today was the day they had decided to submit her sexually to their parent's Master and Mistress. Sandy decided that her dream boded well for this decision, leaving a smile on her lips. This thought also made her consider touching herself before she got up for the morning, considering her body was already tingling.
Last night had been the greatest night of her life. Steven was able to see all her thoughts. She did find Steven the hottest man she had ever seen, she did love him and she did lust after him, but he wasn't the force of nature that Nathan was. When Steven had asked to give each other their virginity, it scared her and excited her to no end. The act itself was so good. Steven was so gentle and sweet, almost too gentle. When Sandy used her dildo on herself she pounded her pussy, pinched and twisted her own nipples, and slapped her own ass; she liked it rough. But, what Steven did let her orgasm build up slower and made the first orgasmic scream louder than any before, so he seemed to know what he was doing. He'd then actually fucked her and held out long enough for a second, she'd never been able to give herself multi-orgasms.
Then, of course, Steven asked something that made losing her virginity seem minor by comparison. Asking her to be his slave. Sandy understood why he asked, beyond the obvious of more sex between them. He was afraid of the sway that Nathan was having on her. He was right to be afraid; the game, the orgasm, the talk after the game, then carrying her into the family room, and holding her on his lap had turned her mind to putty, and she would have done anything for him in that moment. If he'd asked for her to be a slave right there she'd have agreed and last night with Steven wouldn't have happened. And Steven knows he can't compete with Nathan right now. He's risking so much. Nathan is so strong in more ways than physical. But, Steven's plan seems like it gives her everything she wants. If Steven does what he claims he can do then she gets a stronger version of her best friend and lover, if he fails then she can stay with Nathan.
For a moment Sandy considered moving her brother's hand gently off her so as not to wake him, but, there was something about the feel of his warm palm on her sensitive flesh, knowing he was just as naked as her, that made her decide to leave it there. When she instead rolled back a little toward her big brother, a slight gasp broke her lips as she felt her brother's rock-hard cock against her bare ass cheeks. She could imagine herself waking every morning like this causing her body to shudder at the thought.
Deciding that this really was a brand new day for them both, and knowing she was about to embark on a journey that she had never imagined herself taking, Sandy lifted a hand and placed it gently on top of her brother's. Both of their hands now held her small breast, and her eyes fluttered closed again as the sensations that coursed through her young body tingled her nerve endings and grew her already hard nipple into her brother's hand. Laying in her bed, with her naked brother spooning and caressing her, Sandy knew this was definitely going to be a very different day to the ones that had come before.
"Steven," the younger sibling whispered. "Steven?"
The older brother mumbled and murmured.
"Cuddle me," Sandy whispered as she pulled on his arm gently, and wriggled her body. Without too much complaint, Sandy felt Steven bring his body closer to hers. Somehow it felt very apt to begin their day with such an embrace, Sandy thought, especially feeling her brother's very obvious erection pressing against her ass. For some time the twins simply embraced each other silently.
Getting out of bed naked, and then pulling her pajamas on with her brother watching felt wicked, and yet equally right, especially as she saw her brother's erection bouncing around before he concealed it in his boxers.
When the teens both emerged into the kitchen, they almost felt a sense of disappointment as they found everyone was already awake, and hadn't come to wake them. Their mother was under the table sucking Nathan's cock as their father finished hand-washing a few dishes. Ericka was at the kitchen sink with their father, affectionately teasing him about how his caged penis leaked knowing that his wife was pleasing Master's cock. As the teens sat at the table slave Aaron brought them some scrambled eggs and coffee, and everything seemed rather uneventful. Or at least, compared to the events of the previous morning.
The teens both noticed that the dominant couple's robes appeared a little bulkier than the previous day, with Ericka wearing a longer and thicker one than last night, pondering whether they were wearing night clothes under the gowns. The conversation around the table was light and Sandy began to wonder whether Nathan had forgotten about the question he had posed to them both the night before. When the teens finished their food, and slave Aaron cleared the table, Nathan finally called slave Maryanne out from under the table, giving her a slow kiss on her lips, before asking the two parents to take their children into the living room. This was it, Sandy thought.
The slaves herded their teens and had them stand at the end of the living room, before taking up their position behind the young offerings. The wait seemed to take forever.
When Nathan and Ericka walked into the room, Sandy and Steven were both struck in awe and surprise as they saw the older couple now very much looking the part of a Dominant and Dominatrix. Nathan was wearing a pair of leather pants with an open leather jacket exposing his chest, whilst Ericka was wearing a leather bustier that cinched in her waist, pushed up her breasts, and exposed them right down to the nipples. The skirt around her waist flared out granting the teens a view of her black panties that were only for ornamental purposes. The long crop in her hand perfectly accented her appearance as the couple walked slowly up to the nervous family.
For a long moment, the Dominant couple stood and stared at the mother, father, son, and daughter that stood before them.
"My slaves, do you present your children to me today of your own free will, and do they stand before me now of their own free will?" Nathan finally broke the silence.
The two slaves both nodded their heads and answered with a simple "Yes sir".
Sandy noticed that the older couple thought this was a foregone conclusion. They were speaking and acting like she and Steven were about to say yes. Even her parents looked like they expected the next words out of their mouths would be 'Yes, Master'. She could understand why they'd think she would say yes, but why were they so sure of Steven?
"Sandy," Nathan spoke again, "Do you wish to serve Mistress Ericka and I today, to submit your body and mind to our control, knowing this will include sexual acts that you may not always find comfortable, and knowing at all times that I shall have your safety and pleasure in mind?" His eyes bore into Sandy's soul as he stood there in front of her, awaiting her reply.
Sandy felt the hair stand up on her neck as she stood with her parents behind her, her brother to her side, and Nathan and Ericka in front. "I can't answer that until Steven does, sir." She said as Nathan frowned at her. She didn't like disappointing him.
