The Other Sister (RWBY) (Patreon)

Poll Winner

Themes: Rough Sex, Breeding, Cheating

Summary: Jaune and Ruby have been married for a few years now and he's getting the itch to start a family. Only, it seems that Ruby doesn't want children and has been blowing him off to go play hero. Good thing her freeloading sister, Yang, is around and ready, nay, downright eager to be a mother... 

-x-X-x-

“Ruby, I really think we should talk about this! Even if you don’t want to carry the child to term yourself, there’s always adoption!”

“Sorry!Alreadylate!Gottajet!We’lltalklaterloveyoubye!”

As Ruby Rose-Arc zips out the door, she stops for only half a second to place a peck on Jaune Arc’s cheek, and then she’s gone, leaving him standing there with his hands on his hips, staring after her already disappeared form. That semblance of hers had seemed like such a godsend, back when they were at Beacon and working with one another. Now though? Now that she was using it against him? It really was a hassle.

They’d been married a few years now, the two of them. And Jaune loved Ruby with all his heart, really, he did. She’d pulled him out of the depths of despair after Pyrrha’s death, her and Ren and Nora. They’d all given him a reason to keep on living. Of course, Ren and Nora had each other… just as Ruby and him were supposed to have each other.

But while they had plenty of fond memories together, Jaune wanted more than that. He wanted to start a family. One might think that as a boy with seven sisters he wasn’t interested in children or something like that, but they’d be wrong. He was VERY interested in being a father, even if his and Ruby’s profession was a dangerous one. Sure, they were both hunters, but that didn’t stop their parents from having kids, so why should it stop them?

Unfortunately, every time he brought it up, Ruby shut down. She’d been constantly blowing him off for months now, just to go and play hero. Jaune knew for a fact that all these extra jobs she was taking weren’t necessary. They were making plenty good money already as hunters, to the extent that they had a nice, large house with all the trappings and amenities that one might want in it.

And yet, Ruby kept on taking extra missions, and it felt… it felt like that was a direct result of HIM trying to bring up the family thing. Like he was pushing her away, or something. But then… wasn’t she pushing him away in turn? By constantly blowing him off, by refusing to actually sit down and talk about it with him?

She always said they’d ‘talk later’, but that ‘later’ never materialized. Whenever Jaune tried, Ruby would find another excuse to put it off even more. He was honestly reaching the end of his rope…

“Yo Jaune, Ruby gone again? Just got done with my workout, so I’ll be heading into the shower. Better not peek or anything, heh!”

And then there was THIS bitch. Alright, so maybe that wasn’t exactly fair, to either Ruby or her sister. Still, as Jaune turns to regard Yang Xiao-Long, he’s not exactly surprised to see the buxom blonde bombshell dressed in a tight, orange tank top and a pair of black workout shorts and nothing else. Covered in sweat, she’s got her arms back behind her head and is clearly stretching as she walks through the living room.

Their house is a sizable one, and one of those aforementioned amenities they’ve got is a full blown gym for working out and training their bodies. It’s a worthwhile expense for a pair of married hunters like him and Ruby, as it keeps them in tip-top shape… but at the same time, it feels like the one who uses it the most is neither of them… but instead Ruby’s freeloading sister.

Yang had shown up several months ago, right around the time he’d started trying to talk to Ruby about starting a family, in fact. Ruby had told him that the blonde needed a place to stay for a little while, and of course Jaune hadn’t minded. They had plenty of room, after all.

But it was soon after that Ruby started taking on more and more extra jobs, and he had found himself home alone with only Yang for company more often. It wasn’t like he never left the house or anything, he had plenty of missions himself after all, but still, the end result was situations like this, where Ruby was gone… and Yang seemed to be going out of her way to tease him with her rocking bod.

Rolling his eyes, Jaune ignores Yang to the best of his abilities, and a moment later she disappears through the other doorway, heading for the bathroom like she’d mentioned, having no real reason to linger. The shower starts up a moment later and Jaune frowns at how loud it is. A quick check down the hall reveals what he already suspects… Yang left the door open again.

He’s definitely NOT going anywhere near there. Honestly, if he didn’t know any better, he’d say that Yang and Ruby had planned this, and both wanted him to cheat on his wife with her sister, or something crazy like that! But no, that was insane, right? There was just no way. Still, it was getting harder and harder to ignore Yang’s advances, especially when she went out of her way to be as provocative as possible.

The way the sweat slid down her body after a workout, the way she stretched this way and that, showing off her curves. It wasn’t like she was better than Ruby, or anything like that. They just had different body types, and Jaune loved his wife, truly he did. But after being blown off by her for months, he found himself imagining Yang in his nightly fantasies more and more. Yang, with her wide hips perfect for birthing. Yang, pregnant with his child.

Moving to the couch, Jaune groans and puts his head in his hands. He knows he’s a mess. Really, he does. He’s nearing the end of his rope, and he needs someone to talk to. Preferably his wife, but she’s not here right now. And it’s not like he can talk to his sister-in-law, she’s-

“Still moping around, Jaune?”

In his angst, he hadn’t even noticed the shower turning off. Instinctively looking up, Jaune blushes and regrets it a moment later. Yang stands there, her hair done up in a towel… and that’s it. She grins and cocks a hip out to one side as she thrusts out her chest in his direction.

“Sorry. There was only one towel in the bathroom. And you know how I feel about my hair. You don’t mind, do you? We’re practically family~”

He’s seeing… everything. He knows he should be looking away, or covering his eyes, or removing himself from the situation, but instead, Jaune finds himself just staring at her. She’s perfect for his purposes. She always has been. Still, his hands clench into fists, as he tries to control himself.

“Yang… walking around the house naked is grossly inappropriate.”

Violet eyes twinkling, Yang stalks forward, sashaying her hips as she goes.

“Yeah? Well, if you need to punish me for it, go ahead. You are the man of the house, aren’t you?”

“Yang… please go put some clothes on.”

Humming, she puts a finger to her lips, bouncing on her heels a bit in a way that does… fascinating things to her breasts.

“Mm… sorry, no can do Mr. Arc. See, those were my last clean workout clothes. All my laundry is dirty. Guess I should have done it earlier… but I’m just so irresponsible~ Maybe if I had a big… strong… man to tell me what to do, I’d be a good girl~”

She comes to a stop right in front of him, and leans forward, her breasts almost defying gravity with their perkiness, even as they hang ever so slightly from her chest. She grins at him as she brings herself down to eye level. And staring into those challenging violet eyes… Jaune snaps. With a snarl, he comes up off of the couch and in one smooth motion, yanks Yang down into his place.

The blonde bombshell yelps but also squeals in excitement, as he pushes her face first into the back of the couch, forcing her to kneel on the cushion where he’d just been sat. The towel keeping her recently washed hair up flings free as a result, and her blonde locks come spilling out as her hands grab at the top of the couch, a gasp of exhaled air leaving her lips.

Jaune, meanwhile, grabs her by her hips and yanks her ass higher into the air. Then, he delivers a harsh smack to her buttocks.

SMACK!

“Eep!”

“Enough is enough, Yang! I will not be disrespected in my own house by a… by a freeloader!”

And then, for good measure, he spanks her three more times as well.

SMACK! SMACK! SMACK!”

“Nnngh!”

As he finishes up, he finds himself still holding her by the hips, and instinctively crouching in such a way that the bulge of his crotch is mere centimeters away from her glistening, freshly showered ass cheeks. Panting noisily, flushed as all hell, Yang looks back over her shoulder at him and licks her lips.

“S-Sorry… I’d be m-more than happy to p-pay some rent… maybe with my w-womb, perhaps?”

Jaune’s eyes widen, at the blatant offer. She was seriously all but begging him to knock her up? Did Ruby know about this? He opens his mouth to ask, only to let it click shut as he realized… he actually didn’t want to know. Because in the end, he’d already made his choice, hadn’t he? In the end, the answer to that question… didn’t matter.

With a rough, guttural growl, Jaune yanks down his pants with one hand while gripping down harshly at one of Yang’s toned buttocks with the other. She stays right where he put her, watching over her shoulder as he pulls out his cock and lines it up with her waiting, dripping wet pussy. Jaune hesitates for only a brief second more, imagining Ruby’s face in his mind’s eye… but then, he imagines her running away in a flash with her semblance, avoiding yet another conversation about family and their future together.

Snarling, he slams home into Yang’s cunt right there on the spot, thrusting into his wife’s sister from behind and fucking her hard and fast without hesitation or mercy. Once he’s buried in the blonde bombshell’s hungering twat, his hands end up gripping down tight around her hips, and he uses that hold to really rail into her.

Luckily, the couch is flush up against the wall of the living room, or it’d probably be rocking nonstop from the force of his blows. They’re both hunters after all, a little property damage is the least of what one should expect from a coupling. Of course, Ruby was a hunter to, and so when she and Jaune had bought this place, they’d made sure the furnishings were… mostly hunter-proof.

Wouldn’t do for the bed to break on them mid-coitus when Ruby was riding him to kingdom cum as fast as her speed semblance allowed, while he was hanging on for dear life and relying on his own semblance to maintain his endurance.

Of course, he and Ruby hadn’t had sex since he’d brought up the thought of having children. Instead, she’d completely blue balled him, on top of blowing him off every time he brought up the conversation. Yang though… Yang was available, apparently. More than available, she WANTED him to knock her up.

“H-Harder! G-Give it to me, Jaune! Fuck! Y-You can… nngh, p-play with my hair, if you want!”

That startles him anew, as Jaune stares at Yang’s freshly washed hair with wide eyes. Really? She’d always had a thing about people touching her hair. And now? Well, fuck it, he was in too deep to back out now. One hand comes up, reaching out and grabbing a fistful of Yang’s blonde locks. Gathering them up into a makeshift ponytail, he wraps them around his fist and yanks, hard.

Yang gasps and cries out, her back arching beautifully as her pussy clings down all the more aggressively around his cock. She lets out a wanton moan, and it takes Jaune a moment to realize she’s cumming for him. This only further invigorates him, reenergizing him and spurring him on to fuck her even harder as he leans forward and growls in her ear.

“You like that, Yang? You like when I pull your hair?”

“Y-Yeah… yeah! I like it! Nngh, I love it! F-Fuck, lover-boy! D-Do it! Breed me! Knock me up!”

Either Yang had been listening in on his attempts to have the conversation with Ruby, or Ruby had specifically brought Yang in to act as the surrogate womb for the children she didn’t seem to want. Either way, Jaune finds he doesn’t care. Even if Ruby is in on it, it doesn’t matter… because he’s chosen to do this without knowing for sure one way or another.

He’s cheating on his wife… with her sister. Burying his cock deep inside of Yang’s hungering cunny again and again, while the blonde begs him to breed her, to fill her with his seed, to make her his broodmare. There’s no going back from this. And frankly, Jaune isn’t sure he wants to anyways.

“Take it, Yang! Take my fucking load!”

“YESSSSSSS~”

As he cums inside of her, Yang shrieks, her head tilted back from him still pulling her hair. Thus, he gets to see it all as her eyes roll back in her skull and her tongue sticks straight up out of her mouth. He gets to watch the fucked silly expression she makes, even as he feels her cumming along with him, her spasming pussy milking his cock for all it’s worth.

He cums what feels like buckets. It’s definitely the biggest climax he’s ever had, secure in the knowledge that every last drop of his seed is going right into Yang’s womb, breeding the fertile bombshell on the spot. She definitely has the body to be a mother, what with those fat tits and wide hips of hers. But does she have the mindset?

Jaune finds… he doesn’t really care. Even if he has to raise the kids all on his own, because both sisters turn out to be useless in that department, he’ll do it. He’ll be the best damn father to his children that he possibly can be, no matter who their mother is.

With a grunt, Jaune pulls out of Yang’s cunt and flops down on the couch next to her kneeling form, panting a bit himself as he rests there. Of course, he doesn’t get to rest for long, because Yang pretty quickly shuffles around and, still kneeling on the couch, leans forward to take his cock in her mouth, cleaning it off with her tongue and sucking on him hard to get him back to full mast.

Glancing up at him, she pops off of his cock for a moment and gives it a good solid squeeze as she grins at him.

“Hope you’ll be ready for Round Two soon, lover-boy. We have to make sure, after all~”

… He’d be ready soon enough. Frankly, he was already ready. But he wasn’t about to let Yang control the pace of this. He’d fuck and breed her at HIS pace and no other’s…