Gary sat in his room, the thoughts of yesterday weighing heavily on his mind. The blowjob, the fact that his sister… his actual fucking sister got on her knees and put his cock in her mouth. When he closed his eyes, he could feel the phantom heat that came from her, and the sensation of her tongue wrapping around him. And he’d fucked her as well. She’d bent over, and he’d pushed his cock inside her. He had to tell himself that it wasn’t a dream, and the thought made him hard again, not even for the first time that morning.

He opened his eyes again and tried to focus on the task. He’d spent most of last night editing the video so that it looked even remotely professional, adjusting the lighting and clipping out a few frames here and there that dragged the action out too much. He’d had to try and forget that it was Caitlyn’s mouth and pussy that were doing the work on screen and that it was just another porn video that he jacked off to.

Once he was happy, he uploaded it to their website and added a few comments and descriptions, hoping it would sound like he knew what he was doing. Before he logged off, he checked the balance. It was over a thousand; that was more than enough to help pay the rent.

Then his eyes caught a few new messages in the inbox. He swung open his door and whisper-shouted down the hallway.

 “Caitlyn! Caitlyn, get in here; we’ve got some more requests.”

 Caitlyn’s door flew open, and she practically leapt out into the hallway in a long white t-shirt that barely covered her black cotton knickers. As she bounded towards his room, her massive tits, which were obviously unsupported, bounced enthusiastically, nearly hitting herself in the face. Gary sat mesmerised by them; even though he’d seen them in the flesh, he still absently touched himself at the sight of them.

 “What is it, Gary? More blowjobs? More fucking? Did you upload those videos?”

 Her mind was racing as fast as her heart; the excitement spread across her face and she almost shoved Gary from his chair so that she could look at the messages herself. Gary held firm, and she bounced into him, eventually curling her legs over him and sitting like a naughty child on his knee. Gary scrolled the mouse as they both scanned over the messages. Even as they were looking, new ones popped up, commenting on the video that he’d only uploaded just minutes earlier.

 “Look, the comments are still coming,” Caitlyn said, practically vibrating on his lap. “This guy said that my blowjob was fucking hot. See, I knew I was good at them,” she said as she playfully punched his shoulder.

 She shifted on his lap, and he felt his cock dig into her ass. She turned her head and smiled at him, deliberately wriggling and pushing herself down onto him. Gary’s face flushed as he felt his shaft slip between her thighs.

 “More and more saying they loved the fucking, look ‘Wow she’s hot’, ‘that girl can take a fucking’, ‘what a lucky guy’, yeah you were. See, Gary, people are jealous that you got to fuck me,” She giggled. “Hey, there are some others, a few asking for a solo masturbation session. A live stream.…oh”

 Caitlyn blinked hard. Recording the videos was one thing; they didn’t feel like it was anything but just them recording sex, but a live stream? One where people can interact and tell you what they want? She swallowed hard.

 “Yeah,” Gary said, “They want you to fuck yourself with a dildo on a live stream. Caitlyn, this is where the money comes in. We got a bit lucky with the one-off payments, but live streaming is where the long-term money comes from.”

He looked at her, feeling uneasy that he was now pushing her to do this. Before it had been her trying to convince him to let her suck him off; now he was trying to convince her to go live with a dildo and do what people asked, for money. Caitlyn looked back at him; she was trying to read his thoughts, but deep down she already knew what she wanted to do. The live streaming was scary, really scary, but she also found herself aroused and excited by it. She became acutely aware of Gary’s throbbing dick between her thighs and her head just kept coming to the same conclusion.

 “Ah fuck it. I mean I’ve already sucked a cock and been fucked on camera. What’s a big fucking dildo in my pussy? I tell you what it is…more money.”

 She leapt off the chair, exposing Gary’s raging hard on poking at his trousers. She stared at it for a moment, and a wicked grin spread across her face.

 “Oh God, Gary, we can’t have you distracted with that whilst I’m on camera.”

 Before he could flinch, Caitlyn was already kneeling in front of him, her fingers tugging at his waistband, causing his cock to poke out into the air. Gary gasped, looking down at his sister whose lips were only inches from him. His mind was reeling a touch with the sight of her there, but he’d enjoyed her performance the first time, and he let his hands rest on her head as she leaned forward and glimpsed him through her eyelashes. The heat from his pulsing erection made her cheeks flush, and she felt wet between her thighs — but this wasn’t about her; this was a necessity so they could continue with the videos.

 With a business–like determination, she pushed the thought of who the erection belonged to and wrapped her fingers around his shaft, her lips effortlessly sinking over the tip. There was no finesse; it wasn’t erotic — it was just a mechanism to satiate his need for sexual stimulation. Working quickly, she began to slurp against his smooth skin, his rock hard cock pulsing in her mouth as she flicked her tongue over him. She felt his fingers dig into her head as she worked along him.  Her bobbing increased, and she took more and more in, her throat accommodating his size and allowing her to deep throat him without gagging. Gary’s moans filled her ears as he melted into her furious sucking, his fingers tangling with her hair to ground him in the moment.

 “Oh fuck, Caitlyn…Oh my God, I’m going to cum…nnnngggghhhh…ahhhhhh,” he moaned as the pressure ripped through him and into her mouth. Instantly she started to try and gulp his eruption down, but her mouth was filling fast, his cock pumping large ropes of cum into her. For a moment her eyes widened with panic, but she worked harder until she felt him fall limp on her tongue and she swallowed the last of his seed. Caitlyn wiped her mouth with the back of her hand and stood up, her athletic frame looming over her brother.

 “There, now that we’ve taken care of that, we can get on with some actual filming,” she said whilst smoothing her t-shirt down.

 She turned around and walked through the doorway as if what had just happened was no big deal. Gary sat slightly shocked by what had just happened, his limp dick flopped onto his trousers and his brain trying to make sense of the fact that she just gave him a blowjob for basically no reason other than she could. A smile spread across his face as he realised that this wasn’t just about the videos anymore; they had a sexual relationship. No more trying to keep a girlfriend happy or going on expensive dates, just sex on tap; the thought alone made his heart race with excitement. His mind clicked back to reality, and he tucked himself back into his trousers and grabbed his phone as he headed to Caitlyn’s room.

 He stood by her bedroom door and held his hand up to knock, but did he have to anymore? He’d seen her naked, and she’d sucked him off twice now; they really had no more secrets. If she was getting changed, then it wouldn’t be a big deal, although he was fairly sure that he’d be instantly hard again.

Pushing the last of his hesitation aside, Gary turned the handle and pushed her door open, cradling the laptop as he stepped inside. He stopped dead, and his eyes nearly popped out of their sockets as Caitlyn was pulling her PVC skater dress over her head, his stare focused on her hairless mound, which disappeared as the dress dropped into place. Gary licked his lips subconsciously and shook his head to try and throw the image from his mind, but his cock was already starting to harden again at the thought of his sister naked under that dress.

 “Oh, good, I was beginning to think you weren’t coming,” Caitlyn said. “I thought I’d go with no panties; after all, I don’t think my fans are bothered about seeing me shift the underwear; they just want the main event.”

 Her eyes drifted to his crotch. “Oh come on, Gary, I’ve just taken care of that; you can’t be hard again,” she teased.

 Gary’s face burned, and he felt his erection start to ease; his embarrassment was the biggest hard-on killer known to man. He waited a moment before he walked over to his usual spot in the corner to set up both his phone and the ring light.

 “I was thinking,” Caitlyn began, “That probably the best thing to do would be for me to sit on the bed with my legs open and the camera pointing straight down at my naked pussy as I use the dildo. You should be able to get some good close-ups as I thrust it inside of me.”

 Gary swallowed hard again; his confidence from only a couple of minutes earlier had evaporated. His sister was talking about her naked pussy and fucking herself with the dildo, which he couldn’t even see yet. Heat crept up his neck, and he scratched furiously at it, which only seemed to make his awkwardness worse. Caitlyn smiled at him; she knew what effect her words were having, watching him carefully as he suddenly tried to make out that his socks were far more interesting than they really were.

 After letting him sweat for a moment, she brought the conversation back to the video. She moved over to a space directly in front of her bed and gestured with her hands.

 “If you bring your phone over to here, this should give you a direct line to where the fun is happening. Remember this is a live stream too, so we need to keep it interesting.”

 After repositioning the phone to where Caitlyn had requested, Gary set up the laptop close by so he could monitor the requests as they came in. She climbed on the bed and positioned herself in front of the camera in a mock-rehearsal, her hands positioned between her legs holding an imaginary dildo.

 “Yes, that’s about right. You’d get some really good footage of me, and hopefully we’ll get some cash from it.”

 Gary gawped at his sister. He was in awe of how she could go from the sheer vulgarity of what she was going to do, to talking about it as if she was buying a packet of sweets. He watched her as she slid off the bed, her dress riding up to give him another full frontal view, her expression still the same; she wasn’t even bothered anymore about flashing him. Gary’s body trembled, and his cock twitched. She may not be bothered, but he was certainly still very much aroused by the sight of her naked, athletic body; he was aware that it was suddenly very warm.

 Caitlyn moved over to her chest of drawers and bent at the hip to slide out the bottom drawer, her dress riding up once more; like she was presenting herself to him. He gripped his phone tightly, his knuckles white, feeling like he would break the plastic casing.

 “Fuck,” he whispered to himself. Meanwhile, Caitlyn pulled out an enormous black plastic penis; Gary’s eyes widened at the sheer size of it.

 “Whaddya think? Too much? I figured this would be a great dildo for this stream. I really get off on it; it stretches me so much.”

The sheer size of the monstrosity made Gary’s eyes water. The thick black head was about the size of a snooker ball and the shaft seemed liked it went on forever, cut with deep ridges for maximum pleasure. He gulped hard; fairly sure that his sister heard it as she flicked her eyes from the huge black cock to his eyes, her mouth curling at one side. She slowly moved back over to the bed and slid onto it like she was deliberately trying to tease him. Every thought in Gary’s head shouted at him, but he pushed his feet harder into the carpet, determined to stay where he was despite the urge to run over and bury himself inside her again.

“Gary! Gary!” Caitlyn snapped, “What’s gotten into you? You’re acting like you’ve not seen me naked. We’re doing this for the video. We can have sex later if you want?”

His eyes flew wide open; the thought of being inside her again, if they could get past this, was the only motivation he needed. He blinked as if to reset himself.

“Okay, okay,” he said, “I’m ready.”

Gary touched the screen on his phone, and the recording started; he gave her a quick thumbs up to begin her performance. Caitlyn leaned back against her headboard and rested in amongst her cushions, making herself comfortable.

“Right boys,” she began, “Who wants to see how much of this I can take today?” She held up the enormous black penis to the camera and set it down beside her. Gary looked at the laptop screen, watching the viewer count rise steadily, a few messages starting to come in with donations of ten and twenty. He gave Caitlyn a sign to keep going, she was doing well.

She leaned over to her bedside table and grabbed a clear bottle of lube, pumping a few squirts into her hand. Gary zoomed in on her legs as she spread them apart, the dress bunching around her hips, which gave everyone a clear view of her glistening, hairless mound. A smile spread across her face as she imagined all the viewers with their cocks out watching her; the thought made her even wetter, and she had to stop herself from just diving straight onto her clit with her fingers.

Slowly she rubbed herself; the urge to flick herself was great, and she pulled herself back, almost physically restraining herself. The torture of her own fingers on her pussy was almost too much, and she started to whimper, her eyes closed as she melted into her own touch. The sound of the lube mixing with her own arousal started to fill the room. The wet slopping of her fingers against her pussy made her hips buck slightly.

Gary felt his hand against his crotch, absently stroking himself as his sister moved her fingers across her private area. His eyes were completely fixed on her; this was the most intoxicating thing he’d ever witnessed without being directly involved. He was a mere spectator as she pushed herself, like everyone else who was watching, but he still felt like this was his own private showing. He glanced at the laptop, and the money was coming in slowly but steadily; she was doing what they needed, even if he was still staring at her masturbating.

“Now guys, do we want to see me with the big boy?” Caitlyn whispered in a dangerously low tone, her ragged breaths punctuating her words.

Lifting the dildo like a sword and not as a sex toy that was about to fill her, she stroked her pussy once more, gathering the lubrication on her fingers as if she was collecting honey and she spread it over the thick plastic head. Her fingers lingered on the tip for a moment, and she slid them down the shaft like it was a real cock and she wanted to prolong the tease. Gary’s mouth opened slightly as she licked the full length of the mighty fuck toy, tracing her tongue up slowly.

“Mmmm, I bet you guys are so hard right now. You just want me to fuck myself with this, don’t you?” she purred, her voice carrying an edge that made Gary shiver, and he felt his head nod unconsciously.

Without another word, Caitlyn moved the head of the enormous dildo to her slick entrance, staring right down the camera lens as she pushed it into her aching pussy. The immediate impact of it filling her was met with a groan, one that she had been building up for several minutes.

“Oh god! It’s so fucking big. Mmmm I love being stretched by a big, fat cock!” She glanced at Gary as she began to move it in and out; the slick sound of her earlier foreplay meant that it glided along her walls with almost no effort. Her brother stood motionless except for his hand grinding against the outline in his trousers. She focused on him as she pushed the plastic cock deeper inside her.

“YESS!!! Fuck, Yes. Nnnngghhhh give it to me….fuck all of it…!” Her breaths were short and sharp as she lost herself in the sheer pleasure she was getting from being pushed to her physical limits. Her eyes rolled back in her head, and she rammed the dildo harder and faster into her, the wet slopping sounds of the massive toy inside her filling the room.

“Yes….Fuck me, Gary. Fuck me.!!!” She panted. Gary’s hand stopped on his cock, and he flashed a glance over to her. She was completely gone with the sensation, and yet she was...