Both characters in this story are 18+. This story contains incest and is fantasy only.
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Greta was home. Greta was only ever home.
It was New Year's Eve and she was still home, lounging on the couch with her pajama shorts riding up, along with her long sleeved hoodie that showed her midriff. Not that he was noticing. Not that he was allowed to look.
James was also home, but he had a good enough excuse. He lived half the coast away in another city and he hadn't been home in years. First the army, then university abroad, paid by the army and then he got a career in the gaming industry and worked eighty hour weeks whenever it was needed. It was needed a lot, it turned out. He missed countless Thanksgivings and Christmases and now that he was finally home, his parents had their own plans and his sister -- his own little sister -- felt like a stranger in a strange house.
He was thirty five and a stranger in his own home. Life had a funny way of working out.
All Christmas his parents had talked about the Maui trip they took with the Martinsons, their neighbors. James hadn't listened, focusing on the food and the eggnog and not Greta, staring at him incessantly across the table, making him feel like even more of a stranger. But he hadn't realized that the trip was actually taking place over the holidays and he would be stuck at home without his parents for New Year's.
What was Greta's excuse for not having plans? She was only twenty six, and had just graduated with a Master's in something he didn't really understand, no matter how many times his mom explained it. She lived at home, still, at least he thought she did.
Her room looked adult, as opposed to how juvenile his own looked. Everything in his room reminded him of his oversexed youth, and he found his hand slipping into his boxer shirts every single evening. Jerking it furiously like he was eighteen again.
It wasn't because Greta was always staring at him. It wasn't because Greta wore the tightest dresses known to man, or spent every day in yoga pants and tops that made it very evident she didn't wear bras at home.
His own mind admonished him. That's your fucking sister. But she didn't feel like his sister. She felt like just a staggeringly beautiful young woman, who was constantly staring at him.
"What's up?" He looked down at her.
That perfect ass. But no. His sister, he reminded himself.
"Nothing," she said, sounding bored, eyes glued to her phone. "Might watch the new Marvel show later."
"Didn't know you were into that shit," he said and flopped down on the couch, into the corner of it. Where his eyes could rake over her side profile, the shirt riding up on that toned midriff. The curve of her back.
It was fine to commit to memory for later, right? He would imagine that body on a different girl, some porn actress or a girl he'd swipe right on Tinder. He wouldn't really imagine his sister while jerking off.
He felt guilty and looked away, grabbing the remote.
"You haven't asked me a single question since you came home, James," Greta said. "So how would you know what I'm into these days?"
"Sorry," he replied, flipping through channels, desperate for a distraction that wasn't her ass. "Been a little off, I guess. This is my first holiday in a decade, you know."
"Well?" She sat up, facing him on the couch, legs tucked under knees, like a yoga position. "Are you going to ask me something?"
"Sure," he agreed. "Um, you going to a party tonight?"
"No," she said. "I don't have any friends in this town, everyone has moved away. Like you."
"Well, sorry, I kind of had to," he said, shrugging and his eyes focused on the television. "You got a boyfriend? Girlfriend?"
"No," she said, shaking her head. "Too busy studying."
"Hear ya," he replied and settled on a news network, covering the New Year's Eve celebrations in New York City. "Why do you keep staring at me?"
"I don't--" Greta began but then looked down, embarrassed. "You look so different from what I remember. You're huge now."
"Huge?" He almost laughed. "The fuck does that mean?"
"You're like, wide." She blushed. "I don't know."
He knew he wasn't fat. Gym was about the only thing he made time for during work weeks, sacrificing sleep for it. Maybe she meant he had filled out since leaving home.
"Guess we'll just watch TV, then," he said and pointed at the news coverage. "Make some popcorn."
"Drink some beers?" She stood up, headed for the kitchen.
"You drink beer? You never did that before."
"I do a lot of things you don't know about," she said nonchalantly and walked off.
He definitely didn't stare at that ass as she disappeared into the kitchen. He definitely didn't think about her on her knees in front of him, her full lips sliding over the head of his hard, hot cock as she said those same words. He slid a pillow over his lap, willing his dick to go down from its semi-hard state.
She came back with two beers and popcorn and to his great disappointment settled down on the fluffy mat on the floor in front of the TV. She lay down on her stomach again, giving him the full view of her ass in those pajama shorts.
Jesus fucking Christ. He was so hard and his mind was filled with images each more depraved than the last. His little sister. Riding his cock like she was in heat.
The news coverage continued on the TV until he offered her the remote.
"Watch your show, I gotta go take a leak," he told her and she didn't glance in his direction, just took the remote.
Inside the bathroom he checked his phone for the time. Only 9pm. He would not make it to midnight at this pace.
He pulled out his cock and began stroking it. It was long and hard, purple and slick with precum. He spread the slickness over the length and thought of his ex sucking his cock. But the fantasy morphed. Greta taking it into her mouth, moaning against the length of it.
"Oh," she said in the fantasy. "You're so huge, big brother."
Her tongue licked the head. "I need you in my wet pussy, big brother," she told him.
That mouth. That ass. Taking her tiny tit into his mouth and sucking the hard nipple.
He pumped his cock with increasing fervor and came into his fist, hot spill over his fingers. But this was better. He wouldn't be so horny for the rest of the night. He could just drink a few beers and go to bed after seeing the fireworks.
He returned to her watching her geeky show on the couch, with her knees up. She looked at him, her eyes looking him up and then down but she said nothing.
Something in her eyes lit him up again. But he sat down, few feet of air and couch between them and settled down, a eyes on the show. Hand in the popcorn bowl, that she seemed to not care for anymore.