Master: Okay. Let's try this. I want you to do whatever you can to get me hard without removing a shred of clothing. Straddle me, slide your panties aside, and ride me when I'm ready.
Selene grabbed her phone and typed for a moment.
Slut: Should I change into my other clothes, in case Kate knocks or something?
Master: No. I told you what you were to do if she came in.
Selene's eyes widened for a moment, but she nodded slowly and came up with a plan. She reached up and tugged his pants down a little, giving her easier access. She looked up at him, leaned forward, and kissed him softly on the lips. He kissed her back, and then she moved to kissing his neck and running her hands over his chest. She held onto his arms as she slid back down, rubbing herself against him as she did so, and then brought her tongue to the base of his shaft, licked up its entire length, took him in her mouth, and pushed herself down on him as far as she could.
She was only halfway down his cock when she felt it touch her throat, and she made a soft gagging noise. She pulled back a little, and they both froze. She felt him twitch a little, and she tried again, more prepared for it this time, and took him a little farther, without making any noise. She drew her head back up, did it again and again, each time moving slightly faster until finally, she was doing it as rapidly as she could, teasing him with letting the tip press against her throat but never entirely pushing it in.
Arthur gripped her shoulders and resisted the urge to thrust forward and impale her throat. He knew he could. She would probably thank him for it, but if she gagged and coughed and caused her sister to come running. He let her set the pace, and he simply sat back and enjoyed himself as his slave used her mouth every way she knew how to please him.
After a few minutes, Arthur tapped her shoulders twice, which grabbed her attention. He gestured for her to climb up onto the bed, and he patted the spot next to him. It was a little awkward bending over the edge of the bed the way she was, so she climbed up next to him, keeping her mouth on his cock as she did so. Arthur leaned his head back against the wall and closed his eyes.
The feel of her mouth working his shaft was exquisite, but all he could hear was the movie, which took him out of it. So he opened his eyes again and looked down. The back of her head was still bobbing, and the visual was nice but otherwise unsexy. She was clothed, and there wasn't anything sexy to see with the sweater loosely blanketing her.
He reached over and pulled the hem of it and the dress up until those wonderfully smooth thighs gave way to round bubble-cheeks separated by a thin line of cotton wedged into the crevice between them. He gripped one of her ass-cheeks and felt the suction on his shaft increase. He smiled to himself as he rubbed and squeezed, almost absent-mindedly. She pushed against his hand a little bit as he worked, and he knew what she wanted. She wanted him to spank her. She liked it; she needed it.
He glanced at the door. One stinging slap might not rouse Kat from the sofa, but it would undoubtedly awaken her curiosity, and Selene wanted to keep this private. They were both single, he reasoned. There was no real need to keep this a secret from anyone. Other than the non-vanilla aspects of what they were doing. And that Selene asked him to. That last fact was enough to keep him from doing anything to sabotage it, despite his teasing threat of having Selene confess her sluttiness to Kat.
He had his right hand on her ass, while his left began to stroke her scalp, playing with her hair while she bobbed up and down on him. She hummed slightly, and Arthur squeezed her ass quickly and hard both at the sensation and in alarm of her making noise. The result was that she made a still louder noise, between a moan and a squeak, and Arthur had to remind her.
"Sh."
Selene stopped for a moment and then brought her mouth off of him. She reached for her phone, typed for a moment, and held it up to him. She had to roll over to do it and twist slightly so that she could see his face.
Slut: Sorry, Master. I was enjoying myself a little too much. May I ride you now?
Master: Can you do it quietly?
Slut: I think so, Master.
Arthur didn't respond verbally, but he brought his right hand to her thigh and then slid it up until it came between her legs. His fingers curled and played, slipping beneath the thong panties that she'd soaked to the touch. He smiled. She was slick and ready for him, though she stretched and twitched, almost convulsing, to keep from making noise while he played with her like this. His other hand came forward, gripped her by her hair, and forced her to look at him.
He kept playing, moving his fingers faster and more forcefully while the bottom of his palm ground into her clit and began to push it around in small circles. She didn't cry out, but she was gasping now and flailing for her phone, where she struggled to type.
Slut: I cum?
"What?" Arthur asked, verbally but softly, as if he were genuinely confused by the message. He did not stop what he was doing or even let up, but neither did he hasten or strengthen his efforts. His arms remained rigid, and his grip on both her pussy and her scalp remained unyielding.
She was having trouble keeping her eyes open, and her breathing was heavy with her mouth open, panting, as silently as she could. She wanted to cry out, Arthur knew she did, but she was afraid of her sister finding out what she was. She was ashamed of who, what she was. Arthur almost felt sorry for that, but there would be time to teach her to embrace it later. Right now, he simply wanted to see how far he could push this, tormenting her through pleasure rather than pain.
"Please, Master." Selene gasped and clawed at his arm as she writhed against it. "Please let me cum." Her whisper was barely audible.
Arthur heard it, aided by reading the words on her lips, he knew exactly what she said. Still, he asked: "What did you say?"
"Please." Selene gasped, this time at normal volume and louder than she meant to, as her eyes shot open wide in fear. Her following words were a whisper, between her first and normal volume. "Please, Master. Please. May this slut have your permission to cum?"
"Cum for me slut." Arthur whispered in as soft a growl as he could manage. He smiled as her bucking intensified, and he felt her clamp down on his fingers and quiver. He felt her legs clamp together around his hand. Then he watched as she grabbed the sweater that hung down, shoved it into her face, and used it to silence an orgasmic cry of pleasure that otherwise might have been quite loud indeed.
By the time her muffled cry ended, the clamping down had relaxed, and every muscle in her dance-toned body was as loose as putty. She took in a deep breath but did not stop to rest, despite the euphoria she felt. He was rock hard now, and she was ready for him, though she did not have the energy to ride him as he'd asked. She felt guilty for wanting to ask him to fuck her instead, letting him do the work after he'd just brought her to an orgasm like that. The least she could do for her Master was to put in a little effort.
Selene shuddered as he withdrew his fingers from her and opened her mouth suggestively to clean them, but he did not bring them to her lips. Instead, he dipped them inside of her dress, under her bra, and wiped them there, first on one breast, taking his time to tease her overly sensitive tit, and then on the other. He dried his fingers there and made sure of it by tasting them himself and wiping his saliva off on the skirt of her dress.
Selene caught her breath a little and then pulled herself up to face Arthur and straddle his lap. His dick was pressed against her, her thighs on either side of his, her hands on his shoulders. She bucked her hips forward a little and back a little. She couldn't move enough to slide along his entire length the way she wanted to, but it was enough. He was already hard beneath her, and he nodded slightly to her as she looked at him.
Selene reached between them, sat up on her knees, pulled her thong aside, guided him, and sank slowly onto his shaft. Slowly because she was still not accustomed to his size, and she was amazed that she always seemed to be able to take the next inch. Until she wasn't. Her eyes flitted for a moment as she held herself there, and she bit her lip to keep from making noise.
Arthur ran his hands under her skirt, over the tops of her thighs, over her hips, until she felt him grip her cheeks. She bit her lip even harder, almost worried that she would draw blood, and let her head fall back a little. Selene lifted herself and then sank back down. She was slow, but she was doing it, and that had to count for something, she figured.
Arthur didn't seem to agree. He squeezed her thigh, and she looked at him. He gestured something, but she couldn't tell what he was saying until he started to do it. He shifted, so he wasn't sitting back against the wall anymore but lying flat on her bed with his head on her pillow. She looked down at him like that, her hands on his pecs to keep herself up, and smiled.
Then he started thrusting.
"Oh-" Selene started to cry out and silenced herself, again pushing the sweater into her face and muffling her cry. She bit down on it, trying to vent the noises like breath rather than letting them rattle in her throat.
Arthur reached up, slid the straps of the dress off her shoulders, and pulled it down. It pinned her arms to her sides, and she had trouble keeping her balance while he was thrusting from below, but she managed. Arthur helped by holding on to her waist and keeping her upright. At least for a few moments.
He reached up and scooped her breast out of the bra, first one and then the other. He smirked as he watched them bounce, though they weren't large enough to bounce very much. They were still slightly slick with the juices he'd wiped on them.
He braced his feet on the mattress and pushed up until Selene realized that she was no longer riding him. He was lifting her and pulling her down, matching each movement of his arms with his hands on her hips with a thrust from his hips, driving into her harder and faster with every stroke.
He was silent, but his breathing was heavy. Selene was only quiet because of the sweater she was half-swallowing at this point. Neither seemed to notice or care about the noise of slapping flesh every time they slammed together. The movie played on, and its music swelled, and Arthur hoped that would be enough. Selene quivered for a moment, and her eyes opened wide in alarm as they both realized that she was cumming again, this time without permission. Arthur smiled as he felt her inner walls clamp down on his cock, and he felt the spasm behind his balls as he blasted her full of cum. He grunted from the effort and let his head fall back against the pillow.
He felt Selene lower herself slowly forward and lay with her head on his chest, her arms still pinned to her sides, and part of her sweater still in her mouth. She let it fall, wet with saliva as it was.
"I think you may need to pick a different outfit for me to wear tomorrow." Selene whispered.
Arthur chuckled. "Oh no. You'll be wearing what you're wearing now." Arthur whispered back. "Red bra and panties stained with juices and cum. Bare legs. A white dress and a sweater with who knows what staining the inside, your bite marks still on it."
Selene shivered, but she didn't protest. Arthur could tell by the look in her eyes that she was imagining it, and the dazed smile on her face told him she found the idea arousing.
He took a deep breath, moving her with it on top of him. She started to shift off of him, but he held her in place. "Stay." He whispered. "I may decide to use you again later when I get bored with the movie."
"Yes, sir."