Chapter Text
Without a husband to take care of her needs anymore, Talia calls to Peter to fill that void. Her husband wasn't really in the children's lives anyway but now that it's been so long since she's orgasmed or been pregnant, her omega needs are building again, and Peter will gladly take that weight off of her shoulders. When they were younger they couldn't keep their hands off each other so now that his sister's husband is out of the picture, he can't wait to get his hands on his omegan sister again, maybe even get her pregnant with another pup. The thought of it makes his dick throb in his pants.
Talia has been overly motherly towards her children and couldn’t keep her emotions in check when she saw a baby in the grocery store. She knew what was happening to her, she experienced it after having Derek. After the birth, taking care of baby Derek just took up so much time and by the time she noticed how long it had been, her husband had been focused on work again. After that it took 6 years for them to be intimate again, resulting in the birth of Cora. In that time she also felt overly motherly but back then she had her husband to take care of her needs. Even if he ignored her most of the time, so she always ended up in her brother’s room for some comfort but she never allowed it to get past simply touching, she didn’t want to betray her husband like that.
After Cora’s birth, he finally seemed to have enough of Talia’s encounters with her brother and her neediness, so he left them. Now that it had been almost 6 years, her need to be pregnant again couldn’t be held back by simple touching anymore, she needed to be knotted. She couldn’t ask just anyone to fill that need, they’d think she was too much, they wouldn’t be able to handle her relationship with her alpha brother.
So she ended up where she always ended up, right at her brother’s door in the middle of the night.
When Peter opened his door he saw his omegan sister dressed in scandalous little clothes that barely covered anything, she looked like she was finally giving in to his request to fuck her again after all these years and Peter couldn’t be happier. He took a hold of his cock through his robe, making sure his sister saw exactly what he was doing. Talia swallowed as she noticed her brother getting hard through his robe, he was always the bigger one between him and her ex-husband. The omega inside of her crooned at the sight of such a powerful alpha showing off in front of them. It made Talia bite her lip and softly moan. It has been such a long time since an alpha took an interest in her like that, it made her feel wanted again, which only exacerbated her need for a pup.
Peter couldn’t take it anymore and took ahold of his sister, dragging her towards the bed before taking off his robe, his dick already rock hard and leaking from her little show at the door. He grinned as Talia gave him a sultry look and went down on her knees in front of him.
Talia looked up at her brother between her lashes while taking his whole length in her mouth in one go. It took some getting used to after having gone so long without, but she adapted quickly, licking and sucking all the places she knew Peter was extra sensitive.
“Fuck, you little whore, so you still remember then? Good, I’m gonna knot your little holes so good, you won’t even remember you ever took anyone else in your pussy huh,” Peter’s words only egged her on, making her suck harder. Peter growled and took ahold of her hair with one hand, grabbing the back of her neck with the other before starting to fuck her throat. He was moaning as he felt her throat give way to him, Talia swallowing around him.
“You’re such a fucking slut, coming to beg for my cock,” the speed of his thrusts made her gag a little, not used anymore to sucking such a big cock.
Peter pulled on her hair as he started knotting her mouth. Talia struggled a little, trying to pull back so the knot wouldn’t lodge behind her teeth but Peter pushed her all the way to the base, coming down her throat as his knot formed, locking her in place as he emptied his balls down his sister’s throat. The sight and feeling of his knot made Peter groan and try to move, to get his knot deeper down her throat. Talia was gagging but the taste of alpha cum made the omega inside her calm down and take it.
“Fuck, there you go, just take it you little slut, be a good omega and swallow my cum.”
Talia swallowed as much as she could, the knot pushing her jaws apart. Her hands move from his hip to his balls, massaging them to try and get more cum out. She was disappointed he wasn’t knotting her pussy but it felt and tasted good nonetheless.
“You’ll get more cum omega, don’t worry, I’m not done with you yet,” Peter moaned as his sister squeezed his balls for all they had.
When his knot finally went down, Talia had to be convinced to stop sucking him.
“Fuck, if you don’t stop I’m gonna knot your mouth again little omega, or did you not want this knot in your pussy first? Isn’t that why you came to my room in the middle of the night to seduce me?” that seemed to make Talia pull back, saliva running down her chin and her eyes and lashes teary from gagging, still looking at her brother, as if she was waiting for the next instruction. On how he was gonna knot her next.
Peter grinned and grabbed her breasts, squeezing them both momentarily to admire how they bounce as he lets go. He can’t help but smell the air, smell how his big knot affected his little sister.
“Are we leaking on the floor are we? Got excited from the taste of my dick in your mouth omega? Lay down on the bed so I can inspect your little holes, see how wet you are for me,” Peter’s voice had a soft growl to it, he needed to see how desperate his sister was, needed to feel her pussy again after so long.
Talia obeyed quickly, laying down on the bed, spreading her legs out of instinct. Peter joins her and swipes his thumb over her dripping panties before licking it clean, moaning at the taste of his sister. He takes ahold of her panties and pulls them tight over her clit and holes, enjoying how she squirms and moans underneath his touch.
“So desperate and wet for me little sister, fuck I’ve missed your holes,” Peter rips off her panties and grabs one of her breasts, squeezing as he starts eating her out, licking up all of the slick. His sister tastes just as delicious as she did 18 years ago, the potent taste making him moan and lick her more aggressively.
Talia was squirming at the feeling of her brother eating her pussy so vigorously. Her orgasm was building quickly but Peter didn’t seem to care or slow down, it only made him suck even harder. Talia couldn’t take the pleasure anymore after a few minutes, cumming on her brother’s tongue, squeezing her legs around his head. Peter wasn’t satisfied yet, not slowing down as he licked and sucked her into oversensitivity.
His little sister was squirming and squeezing her legs around him but he didn’t care he wanted more than just her cum after having waited 18 years. He kept sucking her clit and licking at her entrance.
In between the moaning Talia called for her brother to stop, that it was too much. Peter didn’t listen of course and soon Talia realised he wasn’t going to stop until he got what he wanted. And even though the oversensitivity made her see spots, the possessiveness her brother was exuding over her right now turned her on more than anything else. It’s what allowed her to cum again, squirting on her brother’s face as she rode the waves of pleasure.
Peter grumbled possessively and started licking up every drop of liquid, hungry for it after having gone so long without. Every time he licked her clit Talia squirmed intensively, the sensation was like fire crackers to her nervous system.
After what seemed like an hour, Peter seemed satiated for now, sitting up and turning his sister on her stomach. All of the licking had made Talia riled up again after a while so she was glad Peter seemed a long way from quitting.
As Peter slotted up right behind her, he moves his cock towards her hole and kisses her neck.
“Ready for my knot little omega? Show me how bad you want it, beg me for it,” Peter sounded ravenous as he used her ass to rut against, the slide between her cheeks having been coated by the slick that escaped his attention earlier.
Talia moans, the feel of her brother’s cock so close to where she needs it so badly, but it passes over it every time. The frustration makes her whine, her hips moving to try and take ahold of his cock and put it where it belongs.
Peter grabs her breasts and squeezes, the sight of his sister’s body begging for his knot fuelling his desire to impregnate her even more. He uses his other hand to squeeze her throat.
“Keep still my little omega, you’ll get what you want in a minute. You look so perfect begging for my cock, do you want it so badly huh?” Peter’s about to cum just from the sight of his sister underneath him like this alone, so he takes a second to stave off the orgasm that was building before guiding his tip to his sister’s warm and wet hole.
Talia goes still as she feels her brother’s cock going exactly where she needs it the most. The feeling of being stretched out almost too much before her body remembered how badly it needed a knot.
The sound that comes out of Peter when he bottoms out in his sister is mixed between a growl and a moan.
“Fuck, you feel so divine little omega, so tight and wet for me.”
Peter stays like that for a few seconds, enjoying the feel of his sister’s wet hole around his cock. He imagined this day for so long, jerking off to the memory of his sister touching him every time she got denied by her husband. Finally getting to enjoy her tight holes again now that that bastard left them alone. If he wouldn’t have left soon, Peter would’ve gotten him killed or paid him off, just to fuck his little sister again whenever he wanted. Now that that day is finally here, he has to hold himself back from knotting her right away, he wants to enjoy this as much as possible before that.
Talia squeezes around his cock, desperate for him to move and knot her. As Peter kisses her neck, he squeezes her throat too, as a warning. It makes his sister quiet down and lay still underneath him, only whining a little bit from desperation.
“Peter, please knot me, please?” Talia’s voice was sweet, anything to get her brother to fuck her. When the pleading didn’t work, she turned her head and kissed him, trying to push her tongue into his mouth. Peter resisted and bit her lip in warning.
“Wait your turn little omega, or you won’t get any knot at all tonight. So be a good little sister and wait for your brother to fuck you huh?”
Talia whined but did nothing, even though she was desperate for him to move.
After what felt like an hour, her brother finally started moving, first slowly and then quicker and quicker. He slammed into her repeatedly, no concern for leaving bruises on her as he grunted and moaned.
Peter squeezed anything he could reach, her breasts, her throat, and so much more, he needed to claim every part of her. Despite taking a break to stave off the pleasure earlier, it was quickly building again, the feeling of his sister’s tight and wet hole too overpowering.
“Fuck little sister, you’re gonna make me cum, gonna knot your tight and pretty hole yeah? Gonna fuck you until you’re carrying my pup, would you like that?” Peter was rambling now, moaning and grunting as the pleasure overwhelmed him. He switches between fucking her and rutting against her ass to be able to enjoy this a little longer.
Talia could do nothing but take it, moaning and whining when her brother reached that special spot inside of her. Her breath was starting to get cut off from her brother’s hand around her throat but that only made her enjoy it more, and if she was being honest, she wanted it even tighter.
Peter’s knot was starting to catch on her entrance every time he slammed into her, the stretch it provided felt incredible to Talia, it made her orgasm, squeezing around the knot. Peter finally couldn’t pull his knot back out again so he rutted against her as it grew some more, locking him into place. Peter moaned as he felt the white-hot pleasure wash over him, cumming in his sister’s hole. Inside Peter was hoping his seed was gonna take, that he would breed his sister. The image of his sister with a round stomach squeezed the last of the cum from his balls.
Even though they had great stamina, the pleasure made them tired, their libido’s satiated enough to be able to sleep. So Peter turned them onto their side, his knot still swollen inside his sister.
----------–
Peter was having the most incredible dream, he felt a wet hole surrounding his dick and he dreamt he knotted someone repeatedly. When he opened his eyes he was pleasantly surprised to find his sister cockwarming him in her sleep. As the events of yesterday came back to him he smirked and started feeling up his sister, rubbing his scent all over her, claiming her.
His morning wood also wanted some attention though, and who was Peter to deny himself that with a wet and willing hole right here on his bed.
He started kissing her throat as his hips begin moving and his hands find their place on her breasts. He feels all of his cum from last night dripping down his dick, which makes him want to knot his sister again, to keep it all inside a little longer so that he might breed her some more.
Peter’s movement was starting to get aggressive, which made Talia wake up, groaning from all the stimulation she was getting, the feeling of a big cock in her holes making the omega inside her preen with pride. The cock was hitting that special spot inside of her again which made the pleasure start to build quite quickly, making her moan and go pliant in Peter’s arms.
“Oh fuck, such a good little omega for me, taking my knot and keeping my cock warm throughout the night. Fucking take it,” Peter’s pleasure was building again, it made him jackhammer his sister a little harder, squeezing her throat and breasts some more too.
Talia moaned loudly, she could feel her brother’s knot forming again, she wanted nothing more than his knot, her hips moving on their own to try and get it as deep as possible.
“Oh my god, yes, fuck!” Peter’s knot expanded quickly as he started cumming, the pleasure so intense his fangs came out, they were itching to bite. So that’s exactly what he did, he bit his sister’s shoulder as he rutted against her, claiming her as a mate officially.
The feeling of her brother’s fangs in her shoulder made her squirt and tremble, the pain mixing quickly with the pleasure. She didn’t care that they were now mates, all she wants is his knot, as many times as he wanted to give it to her.