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This is based on the story "My Mom is a Slut" by darkride (with the author's permission).

Chapter 21

A beam of sunlight to his eyes awoke Steven with a start. He felt Sandy still squeezed tightly into him, breathing gently, but his mother was gone. Sandy was lying on his arm and one of her legs was sitting heavily over his. He pulled out his arm as carefully as possible, but with barely half of it out, Sandy's eyes popped open and found Steven's face. "Morning, Master," she purred as a shiver ran down her spine.

"Morning Sandy," he said back casually, no force in his voice.

She frowned back at the interaction, "What's wrong?"

"Nothing. The rules Nathan and I set up mean we wake up in 'family mode'." Steven said smirking.

"Na ah. That only happens after we dress," she pouted and flipped the blanket off them, showing her nakedness. "I'm still in 'slave mode'," she said waggling her eyebrows.

Steven laughed heartily, then grabbed her face and kissed her roughly, "Okay, Little Slut. Crawl out of my room, get into proper clothes, and enter 'sister mode', and I'll meet you in the kitchen for breakfast."

"Come on, Master! Don't you want to fuck me in the morning?" Sandy whined.

"Slave!" Steven nearly yelled, "I gave you an order! I tried to do it as your brother, but if you want me to act as your Master, you'll be punished for this childish argument! This arrangement, where we're all here pretending to be normal is going to take a little time to get used to, but you're still my slave and you need to do as I say!"

Sandy looked abashed and also kind of horny, "Sorry, Mas... Steven."

"I love you, Sandy."

"I love you too, Stevie," she said with a smirk as she got out of bed, dropped to all fours, and crawled toward the door. Steven got up and opened it for her, watching her ass closely as she moved past him down the hall.

Steven quickly put on some running shorts and a simple t-shirt and headed out toward the kitchen. As he rounded the corner he saw his mother at the stove, frying some eggs. She was wearing a short, satin robe which put her long fit legs on full display. It was sexy and a robe Steven had never seen before. He wondered if his mom was also pushing boundaries the way Sandy tried to. "Good morning, Mom," he said putting extra emphasis on 'mom'.

"Morning honey," she said and moved over to him and almost kissed his lips, but switched to a chasted cheek kiss at the last moment. "Breakfast is almost ready, have a seat."

Steven took a seat and watched as his mother floated around the kitchen finishing the meal. Sandy came into the kitchen a few minutes later, wearing cute, tight, white, underwear with a cartoon character on them and a tank top that showed off most of her stomach. While Steven could remember a time or two when she walked around the house wearing something like that, it was the exception, not the rule. So, the question was, were his mother and sister teasing him and pushing boundaries, or was it that since nudity, sex, and sexuality had been so normalized over the weekend that they just feel comfortable like this now? As the Master-on-duty, Steven had to decide if this needed to be addressed. Maybe he should text Nathan?

Mom came over, bringing two plates of food, one in front of Steven and one in front of Sandy. Then she moved back toward the breakfast bar and just stood as she had for several of the previous meals over the weekend. Steven sighed inwardly, this could be going better. "Are you not joining us?" Steven asked cheerfully.

"Well, um, sir... Steven. Normally..."

Steven gave his sister's smirk a side-eye, as he addressed his mother, "Were you not told that after you dressed you'd be in 'family mode'? Was this not an order given by both Master Nathan and myself? Have you ever asked your 'son' permission to eat before?"

"Well, no, ah, Steven. I'm sorry." She said and rushed back to the kitchen for her own plate, then returned to the table and took a seat.

Steven let out a slight sigh and gave a small shake of his head, as everyone started to eat uncomfortably. "Alright, there are several large elephants in the room. Let's start dealing with them." He took another bite of food.

"I know you're both horny and 'want' to continue like yesterday," he smiled at each of them warmly. "I'm an 18-year-old male, so, of course, I also 'want' that! But, it's not what we all 'need'. It's part of my new role to give you what you 'need'. We 'need' to continue on with some type of normality; we have to go to work, to school, maintain friendships, cook, clean, to have some life outside these walls...

"Sandy, do you remember what I said, that I loved you as a sister and a best friend, but also hoped we could love each other as lovers? " he asked her.

"Yes..." she replied seemingly wanting to add an honorific.

"While being with you has been the greatest experience of my life. I truly do not 'want' it to end our relationship as friends and siblings. We all 'need' to be able to sit here like family, to rib each other, to ask about mundane things, to have our mother complain about our dirty rooms, or about us being lazy bums wasting our summer," he smirked at his mother.

His mother squirmed in her seat, "so, um, Steven? As your slave, you could order me to clean your room while naked, and I'd do it with a smile on my face." She practically moaned that. "But, as your mother I could order you to do it. Will I be punished for demanding... um, anything, from you?"

"No! Absolutely not! The entire point of 'family mode' is that we live, act, and pretend we are the same as before the family meeting. Anything you would have expected of me before then, you should expect now."

"Oh, okay," his mother answered sadly.

"What is it? Speak truthfully," he said, making it a demand.

"I was kind of hoping, that, uh, more of my life would now be, um, 'slave mode', with you living in the house."

Steven laughed out loud at that, "Let me ask you. What did you and Dad do between visits to Nathan? I seem to remember at least five or six weeks over the holidays when you didn't go out. How did you get relief?"

"Well, sometimes, we were made to completely hold off until our next visit. That was hard! Sometimes, Master let us use toys on each other. But, we are in contact with Master every day and could get some relief from doing random things he asks of us. But, the reason we wanted to move from just one night a week to the whole weekend is because we enjoy it so much and we wanted more of it in our lives, and I really hoped we could have had you try it for the whole week." Maryanne said with a sigh and a shiver in her body.

"Well, first off, thank you for believing in me and my authority, but I feel there are several reasons why that is ill-advised. First is the reason I stated before, we can't lose our family to this. We can't risk jobs, friendships, or our college education to this. A base position is important. Second, you're still Nathan's slave as well, it'd be unfair to him and Ericka if you disregarded all their desires in favor of your own selfish 'wants'. He wants you wanting and waiting for him, and I'd be remiss if I took that all from him. I agree that some level of teasing is important. Third, before this weekend, nearly every meeting with Nathan was confined to a handful of hours. Moving to long weekends was the next step in the process, and we all need to spend a fair amount of time doing it that way before we move on to 'full-time'. We all need more time to adjust to this new reality."

Steven reached out and took one of their hands each, "All that being said; don't worry. I'm still horny a lot, and I'm sure we'll be playing often enough to scratch your itches." He smiled smugly.

His mother's eyes lit up at that and she gave him the most sultry look she could manage. "Yes, baby. I understand," she said.

"Well! Now that that's settled, what are everyone's plans for today?" Steven asked, "I need to leave by four to get to Nathan's by five, but I'm free until then."

"I planned to take Sandy to the mall to follow your orders from last night, but we're in no rush and could also wait until four. Leaving me free as well," Maryanne said.

"Abby wanted to hang out, but maybe, I'll go to her house after the mall. Since you're going to stay the night in the city, right?"

"Yes. Please be careful Sandy. You're not a good liar, and I know you'll want to tell her about losing your virginity. You need a very good and well-rehearsed story about this weekend and a fake story of your first sexual experience. Come up with some lies and practice by telling Mom and me. We'll work out all the kinks, pun intended," he said smiling.

Sandy sat back and thought about it, "Yeah, that could have been a disaster. She'd have seen right through me."

"You can cancel with Abby if you're not comfortable or ready." He said giving her a worried look. "What do you say to hanging out by the pool today?"

"That sounds great," Maryanne said. "Summer's running out quickly."

Steven got up and made a show of taking his plate, rinsing it off, and putting in the dishwater, to make sure that his slaves wouldn't feel compelled to do so. "Alright, change, and let's meet outside," Steven said heading back to his room.

-

Sandy noticed that Master cleaned his own plate; not ordering either her or her mother to do so. His self-control impressed her. He'd turned her down in bed, even when she practically begged him. Then, he'd only given her a quick glance when she dressed the way she did. Then, he didn't even command Mom. It was clear she was naked under that short robe; she was likely expecting more as well. Then, he was able to explain himself so clearly, trying to stay neutral, but still making new rules for them. It was so hot that he did it without thinking.

She rushed to clean her plate, her mother pushing her aside to do the same; playfully bumping her butt into hers to push her over, while smiling. Sandy laughed, but let her mother take over, leaving it behind to her. Rushing back down the hall she passed Steven walking slowly back toward her. Dressed in simple black trunks; he'd changed so fast.

She entered her room, leaving the door open, she stripped off her clothes and rushed over to the drawer that held her swimsuits. She dug through and pulled out piece after piece. She'd never been overly proud of her breasts, so she didn't have many sexy tops. She really felt however that her ass was perfect and as such had several smaller bottoms that showed off quite a bit. A nice black, high-hipped, thong drew her attention. Then she remembered Master Steven saying last night that he liked lingerie colors to match, so she rifled back through the pile until she found a black top of similar material; a nice crop bikini top.

She put it on and checked herself out in the mirror, surprised how similar it looked to the 'lingerie' she wore last night. She turned her ass to the mirror and smiled at how good she looked. Thinking to herself, this will get a 'rise' out of him. That was until she turned and saw her mother watching from the doorway. "Mom! That's not fair!" she whined. Her mother was wearing a white microkini, little more than string holding a few inches of cloth. The material over her ample chest was so small that Sandy could see hints of areola on the edges.

"Sorry, honey. But, you have to play to win." She smirked as she walked into the room to check herself in the mirror next to her daughter. After a few seconds, she turned, grabbed her daughter's ass with both hands, and gave her a deep kiss. She pulled back, giving a small smack to one cheek, and said, "Let's go wow him."

"Yeah." She said, grabbing her mother's hand and walking out together. There they saw Steven floating, arms splayed over the edge, watching intently as they exited the house. Sandy's breath caught seeing his glistening hair and toned chest perfectly reflecting the light. She'd always found Steven beautiful; a face prettier than other men, a body lean and toned, nice well-styled hair, yet ever since she'd agreed to be with him, all those attributes multiplied by several orders of magnitude. Now, he was almost an Adonis to her; just seeing him wet and relaxing at the of the pool made her face flush and pussy wet.

Master Nathan still exuded more raw natural power; bigger, stronger, like a raging river. Master Steven was quiet intensity, a somber beauty, a still pond with hidden depths. She was so glad she didn't have to choose between them anymore. As they moved across the deck, Master pushed off the wall, heading toward the stairs. As they approached the pool he ascended the steps, as his crotch left the pool it showed he was naked. He stepped past them and reached down to his towel, where his until now unseen trunks were sitting, and grabbed a bottle of sunscreen. "You two are overdressed."

Mom moved faster than Sandy could even process, untieing her top and bottoms at the same time; all of it failing easily from her body. Sandy's mind caught up quickly and she followed suit.

"Let's help each other with the sunscreen. I know you redheads burn from just seeing sunlight." He smiled down at their bodies. She and her mom did burn quickly if they weren't careful, but after a couple of months of tanning, it didn't happen anywhere near as fast as the beginning of the summer.

"Oh, don't pretend you weren't one of us pale redheaded creatures for more than half of your life." She teased him like a brother.

"True, but the universe saw fit to free me from that curse." He smirked back. An old conversation, they both agreed red hair looked better on women than men. "Mom. Lay there. We'll help you."

Sandy noticed Master Steven didn't call her slave or bitch or slut; she wondered if that meant anything. Their mom dropped the back of the pool lounger, placed her towel down, and laid down on her stomach. Steven then led Sandy to the one next to it and told her to sit, while he pulled a chair to the other side.

He squeezed a liberal dollop into his hand then handed the bottle to Sandy, where she copied the action, setting the bottle down next to her. Master Steven started on the shoulders, neck, and arm, the same way he'd do for anyone. Sandy mirrored him on the other side. He moved down the body making sure she was covered fully; looking like he was trying to avoid it being sensual. He even passed over the ass and upper thighs and covered the leg on his side. Sandy watched, trying to figure out his game as she continued to copy him.

Once he did return to her rear end, he covered it clinically, while he did need to dip down the ass and pussy crack, it was only one quick rub before he pulled away and told her to flip. He repeated the same formulated actions to the front, not offering anything too sexual. "Alright, I'll go next," Steven said and switched places with Mom. "And remember I'm your brother and son." Just letting that linger in the air. Sandy realized this was some kind of test. She looked to her mother, who just replied with a shrug.

Together, they applied the sunscreen carefully across his body. As Sandy got to his butt she was so tempted to touch and caress it, but held back and finished with some difficulty. Then he flipped over and his cock was standing hard and fully erect in front of them. The sight sent a thrill through Sandy's body. With a lump in her throat, she rushed to continue the task, carefully covering his face and chest, ignoring the cock as long as possible. On the other side, her mother did the same thing, moving up from the legs. Eventually, though, they met in the middle; Sandy looked up at her mother, then down to her brother's face, his eyes were closed, more test. She took the lead and used both hands to rub down his dick, rubbed the balls quickly, then ran quickly between his thighs, before removing her hands and saying, "Done."

"Thank you, Sandy," he said still using her name. "You're next."

She laid down on her belly. Then she felt the sunscreen pouring onto her back and shoulders. He was sitting alongside her and began massaging her shoulders first and the relief was almost instant. It felt wonderful as he pushed and pulled her body, it felt more like a massage than applying sunscreen. He worked down her back until he came to her buttocks and then he massaged her butt cheeks, but not touching her between the legs or ass crack at all. He then worked down her legs starting at the knees and reaching to her ankles and feet. He made them feel good and then started again at the knees and worked his way up to her thighs. The higher he went the more turned on Sandy became and she was beginning to get nervous that she might have an orgasm.

He was massaging the very tops of the insides of her thighs when he moved her legs apart so he had better access to the upper thighs. 'Oh, boy', she thought and was very hot at this stage but she bit her lip and waited to see what he would do next. He didn't touch her pussy but she knew he was looking right at it with her legs apart as they were.

When he had finished her upper thighs, both inside and out, he asked her to roll over on her back. He started with her ankles and worked his way up to her thighs again. He left the inner thighs and worked on her hips and then her belly and then he started massaging her small breasts. She moaned ever so slightly, trying to hold it back. She was getting so turned on now as he rubbed her breasts and afterward her nipples. She just loved having her nipples played with and could have cum right there, given the circumstances. He moved away and concentrated on her shoulders and neck and she was feeling extremely good.

He began massaging the lower stomach and she started to get very excited. Then, without any warning, he slipped his fingers right down onto her cunt lips and started massaging her there but he didn't enter her. She didn't know what to do and was flushing furiously from excitement but he continued to stroke her gradually moving up until he was playing with her clit. She was so worked up that she started to cum almost straight away.

She had her legs apart as he played with her. She was gushing juices everywhere and her body was shaking with excitement. He continued to stroke her until she just had to stop him; she couldn't stand it anymore!

With that, he leaned over her still-shaking body and kissed her lightly on the lips. "I thought I was your 'sister'?" She whispered through shallow breaths.

"I get to decide when you're my sister and when you're not. You don't." He said with a flat look. It took her several minutes before she was able to climb up from the chair.

-

For the rest of the day, they played, ate outside, worked on Sandy's lies, swam, and reapplied sunscreen, and aside from the fact that they continued to be naked, it was all rather normal. Eventually, it was time for everyone to get ready to leave and they headed together into the house. Steven moved to his room and then sat at his desk until he heard the shower running. He then boldly entered his parent's room, then into the bathroom, and joined his mother in the shower. "Hey, mom," he said.

"Hi, Steven?" She said back confused.

"Your shower is nicer than ours. Didn't think you'd mind." He said with mock innocence.

"Oh. Of course. You're, ah, always welcome." She said, biting her lip and looking down toward his dick.

Steven moved close to her, his face just inches from her own. She closed her eyes and subtly leaned her lips forward toward him. Steven saw this and just reached past her and grabbed the shampoo, then stepped away. After a moment, he noticed his mother opened her eyes and looked at him with disappointment.

First, Steven had to turn down his naked sister, begging in his bed in the morning. Then, he didn't jump on his mother when she said outright she'd do anything for him. Then, he pulled himself away from both of them rubbing lotion on him. Then, they spent all day touching and playing while naked. Now he had his mother, wet and naked in the same shower where just yesterday he'd fucked Ericka. It took an act of near superhuman will from Steven to continue to hold off from fucking them. But, the fact was, that right away he saw the ladies pushing him. He needed to teach them they couldn't manipulate him and in turn, it helped with his self-control.