Poll Winner: Step Siblings Sin (RWBY)

This is late. And I'm sorry. 

 In a different world, Jaune's mother and Ruby's father married one another. Their families were combined, and Jaune and Ruby became siblings, growing up together. But what happens when the two step siblings begin to see each other as something more than friends? Includes: Pseudo-incest, Romance, and Drama

----

Jaune’s best friend was his little sister, Ruby Rose. He wasn’t ashamed to admit it, either. He knew a lot of guys his age hated being around their little sisters, but not him.

No, to him, Ruby Rose was one of the coolest girls ever. He loved hanging out with her. She was kind, and sweet, and smart, and honestly? Pretty.

It wasn’t weird for Jaune to say that! They weren’t even blood related.

It was years ago when Ruby’s dad married Jaune’s mom. That was when Yang and Ruby became his step sisters, and he became their step brother. His already big family got even bigger, and Jaune cared about all members of the Xiao Long and Rose family.

Tai was a good man who never tried to place Jaune’s dad, and Yang was a pretty great sister, if a bit much at times, but Ruby…

Ruby was the best, hands down. 

The two hit off, bonding with one another. He’d read her bedtime stories, and they’d fall asleep together on the same bed, cuddled up together. 

There was never a moment in Jaune’s life where he hated Ruby. She was good, and kind, and his best friend. She was the kind of little sister that most guys dreamed of having. After all, how many little sisters help your in weapons training?

Yeah… Signal was a fun time together…

That was what sucked about Beacon. Jaune and Yang left for the school, leaving their best friend and favorite sister behind, but not even that could keep them apart. Ruby had been allowed to Beacon early, and no one was happier than Jaune. 

Everything seemed to be going right for Jaune. He and Ruby were together still, best friends forever, and they had even both became leaders of their own team… Yet there was a knot in their tapestry. 

Something just a little bit off.

Jaune realized when he saw a boy talking to Ruby about her weapon. At least, that’s what Ruby thought the conversation was about. Jaune wasn’t stupid, he could tell the guy was checking out his sister.

It pissed Jaune off. The guy was clearly looking at Ruby’s breasts, pretending to talk to her as he ogled her. 

And Jaune, being Ruby’s sister, stepped in.

Maybe a bit harder than he should have. 

He told the guy to back off, Ruby got mad at him, and… and Jaune and Ruby had a small fight. She told him she was treating him like a kid, but that wasn’t true!

He knew how old Ruby was. He knew how grown up she was. She was a young, pretty woman. Gorgeous even.

Her short hair was so cute. Her silver eyes were so captivating. And her body… She was growing up, and with that came a lot of changes that Jaune hadn’t been expecting. For both him and her. 

He could feel it in his body. That fire. The more he thought about Ruby, the more his blood seemed to rush down to his dick. He was a young man now, and his body reminded him of that fact, even as his mind loathed himself.

‘She’s my sister,’ he thought with frustration and humiliation. 

‘Step sister. She’s not blood related, and she’s pretty cute,’ another voice told him, and he tried and failed to block it out. ‘You’ve got a crush on her. Just admit it.’

Jaune refused, though. He wouldn’t. He wasn’t some sick pervert who would take advantage of his sister. He loved her! 

‘You’re right. You clearly love her. You want her under you, smiling at you, feeling you press into her…’

‘Not like that!’ he told himself. He didn’t love Ruby like that!

Yet his cock was hard as he thought of her body against his, holding him, trusting him…

Jaune groaned, grabbing a nearby pillow and pressing it against his face, groaning into the cushion. He needed a shower. A nice cold shower. That would get his mind off of his sister.

He burned with humiliation at the very thought. What was wrong with him? He wasn’t some sick pervert! Really, he wasn’t! It was just… Ruby did something to him. 

‘It’s more than a crush. You’re in love.’ And as much as Jaune hated to admit it that little voice was right.

000

Ruby sighed as she kept her head under the water. The flow of cold water chilled her body, but she didn’t care. She really needed it. 

Maybe if she drowned under the shower, she could get her mind off of her stupid, sexy older brother.

Step brother.

Not that it made much difference. It still made her mind… filthy. Absolutely filthy. 

Ruby gently bumped her head against the wall. She groaned, hating herself as her face still felt hot under the cold water. 

What was wrong with her?! She really hated her brother. He treated her like a kid, he could be so overprotective, he always had to try and be the hero, and worst of all?

She, Ruby Rose, had a crush on him. 

“Stop it, stop it, stop it, stop it,” she growled, squeezing her head between her hands as thoughts of Jaune’s body popped into her mind. 

Puberty hit him hard. Hit him with… the opposite of the ugly stick. Turned him into a freakin’ stud, a-and her stupid hormonal body couldn’t stop obssessing over it. His strong arms, his handsome face, his bright, blue eyes, and his heart…

God, he was funny. And she loved listening to him sing, even if he wasn’t very good at it. He was always so nice to her. Always looking out for her.

While Yang was the type of person to challenge Ruby, Jaune was like a safety blanket. All wrapped around her, warm, and snug, and in lo-

No!

Why? Why him of all people? Well, that was obvious. He was a handsome, funny, nice guy. Totally her type. Like a Prince Charming right out of her books.

And seeing him talk to that guy, acting protective of her… she hated it and loved it. 

“Ahh!” Ruby groaned, hitting her head against the wall against, only to groan as her aura took a slight blow from that. She sighed, turning the water and making it hot. She was starting to shiver, and getting hypothermia wasn’t going to help her.

Then again, if she was dead, at least she wouldn’t have to deal with her feelings for Jaune.

What was the point of fighting it…? She liked Jaune. She had a crush on him… Ruby’s hand slid down her naked body, touching her wet pussy. Not wet from the shower, wet from something else inside of her…

She more than liked Jaune. She wanted him…

‘I wonder how big he is?’ Ruby’s face burned at the question, and she wondered why the hell she even wondered that. She groaned again, lifting her face up to feel the hot water all over her body. 

It was nothing compared to the fire inside of her…

Maybe… Maybe she could do something about it?

000

Jaune stretched his arms to the roof as he walked to the showers. He caught that the girls’ shower had a sign by the door. 

“‘Closed until Nora cleans up her mess.’ What did she do now?” he wondered, chuckling as he walked into the male showers. 

There were several empty shower stalls, though he could clearly hear one going. Jaune didn’t think much of it. Probably just some other student under the water. Jaune began taking off his clothes, walking to an empty shower.

That was when he stopped, as his acute senses picked up on the obvious.

He heard someone’s voice. It was mixing with the sound of the shower. That didn’t really mean anything, but there were clothes on the ground. Girl clothes. Ruby’s clothes.

So… either Ruby was here, or someone stole her clothes and decided to just throw it on the ground. 

Jaune really hoped it was the latter, but he doubted it. 

That’s fine. It’s fine. No problem. So his crush/little sister was in the shower next to him. No problem. Jaune would be fine. To show how fine he was, he specifically chose the shower next to Ruby’s.

He was naked now as he turned on the water, feeling the hot stream hit his body. He closed his eyes, telling himself to just focus on cleaning up, but that plan was shot in the head when he heard Ruby’s unmistakable voice. 

“Jaune…”

His face burned hot. He tried to tell himself she just knew he was there and was calling out to him, but it didn’t sound right. She said his name again, and her voice was heavy with… lust. With pleasure, and arousal, and the same kind of tone that he had uttered her name while he… 

Touched. Himself.

Oh no.

‘Don’t look. Just walk away. Just walk away.’ His conscience screamed and pleaded with him, but he didn’t move as he stood there, taking long, deep breaths. He glanced at the wall separating their showers...

000

“Jaune,” Ruby whimpered, sitting on the floor of the shower, one hand on her breast, the other against her pussy. 

She hoped she could put out this fire inside of her. That if she touched herself, she could satiate this hunger. So far? It was like gasoline. It teased her body, and she wondered if cumming would even stop this feeling. 

Ruby was imagining her step brother on her bed, kissing her body, licking her neck as his hands held her body. He groped her chest, squeezed them, and he’d tell her that she was beautiful, even if she wasn’t as pretty as Yang…

Jaune would kiss her lips, and she’d feel her heart race. His c-cock would press against her pussy, pressing into her, pushing deeper into her body as she shuddered and trembled. 

She rubbed her fingers against her pussy, pushing a finger into her own cunt. She imagined it was Jaune’s penis, but… what if Jaune’s dick was even bigger?

“Jaune… ahh! P-please, Jaune…”

And then he’d enter her…

“Fuck me.”

“Whoa!” She heard a crash, and the sound of someone hitting the ground as Ruby’s eyes shot open. She felt a rush of fear hit her as she stood up. She looked around the small stall, finding nowhere there, but she could clearly hear groaning from the next shower over. 

Familiar groaning. The kind she heard plenty of times before when Jaune fell out of bed or tripped on his shoelaces when they were kids…

“Jaune?” she squeaked, her tone betraying her as she trembled with fear. There was no reply for a few moments, but that didn’t comfort her. She knew what she heard. “Jaune, p-please, if that’s you, say something,” she begged.

“...Hi.”

Ruby groaned, covering her face, only to gag as she felt her own pussy juices on her forehead. 

000

Ruby and Jaune sat on opposite sides of a small bench. They stared in different directions, their backs facing one another. Both of them had towels on, both used to cover their privates. 

Neither said anything for a long, long time. Until Jaune finally spoke.

“Do… you know what Nora did to the girls’ shower?”

“Nope.”

“Ah… Probably something funny.”

“Yeah… Funny.”

Jaune kicked at the ground as Ruby’s face burned so hot, any water on her face evaporated away. 

“So, what exactly were you imagin-?”

“I don’t want to talk about it!” Ruby groaned, burying her face in her hands. “I-I just want to leave! Can we please pretend this never happened?”

That… was the right thing to do, right? But could they go back to normal after this? How could Jaune forget what he saw tonight? What he heard?

“Were you really thinking of me?” he asked.

“Jaune…”

“I-I’m sorry. I don’t mean to pry, it’s just… you did say my name.”

“Why did you even look? W-what if I was someone else?! What if I was Weiss?!” Ugh. Weiss. Jaune’s ‘Snow Angel.’ “You’d probably like it if it was Weiss,” she muttered. 

She didn’t even realize what she had said, and she was so desperate to just ignore it, but Jaune had to say something about it. 

“Hey, I liked seeing y-” He bit his lower lip as the two dorks began to burn from shame and embarrassment.

“This is so wrong,” Ruby muttered.

“Y-yeah.” 

“I’m a freak!” she cried, burying her face in her hands.

“H-hey! That’s not true!” Jaune finally turned around, looking at his scarlet-haired bestie. “You are not a freak!”

“Jaune, I was touching myself to the thought of you! My brother!”

“Step brother!”

“It doesn’t matter! Jaune, I’m a freak! I-I’m sick, and this is wrong, and I just don’t want you to think I’m…” A freak. Except she was. 

Ruby felt tears pooling in the corners of her eyes. The weight of her actions hit her like a truck, and her corpse flung into a hard wall of regret. Jaune probably thought she was disgusting, and she was. 

Ruby Rose had always wanted to be a happy, and cheerful person. To be hopeful and brave and to always see the good in even the worst times, but… But she couldn’t think of anything good coming from losing her brother. 

Jaune was her best friend, but she couldn’t blame him if he wanted some space between the two of them now. She could only hope-

“Ruby.” He turned her, and pulled her hands away from her face. She blushed as she realized how close their faces were. How blue his eyes were. How nice he smelled. “I’ve thought about you the same way.”

“W-what?” 

“The same way. I… I’ve touch… I’ve touch…” Jaune slammed his fist against his knee, growling as he squeezed his eyes. “I love you!” 

His voice echoed in the empty shower. Ruby said nothing. Jaune said nothing. They just sat their as his words echoed in reality, and in the young woman’s mind. 

“I know it’s wrong. I know we’re siblings, b-but you’re the greatest girl I’ve ever met. You’re pretty, and brave, and nice, and-” Her hands fell on his cheeks, and Jaune’s eyes widened as he felt Ruby pull him close.

Their lips met… and reality melted away as they gave the other their first kiss. Neither knew how to kiss. Neither knew what to do. Yet their lips gently pushed against one another, and Ruby’s hands pulled at her towel, pulling it off of her body as she kissed her step brother. 

They pulled apart, and Jaune wiped her tears away as their eyes gazed into the other’s. He didn’t look down at her naked body. He saw something even more beautiful in her eyes.

“What are we doing?” she whispered.

“Something stupid?” he mumbled. “D-do you want to stop?”

“No.” She kissed him again, sucking on his bottom lip, and his dick trembled, slowly rising up under his towel. Ruby broke the kiss, and she whispered in his ear, fanning his fire. “I’m yours. I-I want you to show me what you dreamed about doing to me…”

Jaune gulped, and he kissed Ruby one more time as he picked her body up. He placed her on his lap and he pulled his towel off, letting his hard dick press against her inner thighs. Ruby blushed, only to squeak as he placed his hands on her ass and lifted her up.

“W-wow. You’ve been working out.”

“Y-you like?” Jaune asked, and Ruby nodded her head as he held her over his hard dick. “You still wet?” She nodded her head, blushing as she pressed her forehead against his. “I-it’ll probably hurt at first. That’s usually how it works in the stories I read.”

“Y-yeah. That’s what I read too.” The two shared a knowing smile, before she nodded her head. Jaune brought her body down, letting his dick slide into her pussy as she moaned loudly. 

Ruby placed her hands on Jaune’s shoulders, digging her fingers into his skin as she felt him enter her. She trembled, holding tightly onto him as she struggled to control her breathing. She felt him push against and then break her hymen, and he looked at her with concerned eyes.

“Do you want me to stop?”

“N-no. Just… just give me a minute.” And he did, because her step brother was a perfect gentleman. A good man. Her man. He kissed her neck as he held her, and she sighed as her body began to relax. “Okay. Keep going.”

And he did, lifting her up and then back down his dick, slowly, letting his cock fill her. His shaft slid along her wet, tight walls, and Ruby began to feel the pain turn to pleasure. She moaned, smiling as Jaune’s cock pushed deeper into her.

“M-more?” she begged, and Jaune smiled as he nodded his head. He picked up speed, fucking her faster now as she felt her body tingle.

Every thrust felt like a jolt of pleasure coursing through her. Every bounce on his shaft felt like a sugar rush throughout her entire body. There was just something amazing about it, something that made her quiver from just how good it felt to be fucked.

“Are you okay?” he asked, and Ruby replied by kissing his lips. She stuck her tongue past his lips, before pulling back and answering.

“I-I love it! Does it feel good for you too?” she asked, and Jaune blushed.

Honestly, he was loving this. He was loving how tight Ruby’s pussy was, or how tighter it got when he thrusted into her. How warm and slick and wet it was. How good it felt when the walls squeezed tightly around his shaft…

Jaune answered her when he began to fuck her faster, letting his entire cock vanish inside of her. Ruby moaned loudly, beaming as she kissed Jaune, wrapping her arms around his head. Her breasts pressed against his chest as her lips nibbled and kissed his. 

Their tongues danced as the two made love. Nothing mattered anymore. Nothing beyond the one they loved. 

Who cares if it was wrong? Who cares what the world thought? All that mattered was here and now. Jaune loved Ruby. Ruby loved Jaune. 

What was right and wrong by society’s standards didn’t matter to the two as they made love. Ruby’s body bounced on his penis, squeezing it as their tongues danced. They moaned into each other’s mouths as they both felt that same sensation running towards them.

They were going to cum, and there was barely enough sense between them to actually pull away. Neither wanted to, but Ruby lifted her body up, freeing Jaune’s slick cock and letting strands of cum shoot up, and fall to the ground. 

Ruby came right after. She was already on the edge, and just feeling Jaune’s moans through their kiss was enough to set her body off. She came in his arms, trembling as her body felt the explosion of pleasure. 

The young woman fell limp, falling into Jaune’s arms. She almost ended up having his cock inside her again as the two laughed, holding onto one another. 

“Wow,” Jaune chuckled, holding her in his arms. “That was…”

“Mowaaa…” He laughed, listening to Ruby’s slurred voice. 

“I love you, Ruby… Um… Not like a sibling.”

“Clearly,” she snickered, nuzzling against him, kissing his neck. 

“What happens now?” he asked, closing his eyes.

“I don’t know, but… we’ll figure it out together?”

Jaune nodded his head in response. “Like I’d leave you after that. You’re amazing,” he confessed. 

Ruby closed her eyes, kissing his sweaty skin. “Prettier than Yang?”

“Huh?”

“Am I… Am I prettier than Yang?” she repeated, her voice shrinking. She gulped as Jaune kissed the top of her head.

“Totally. You’re way hotter.” Ruby giggled, feeling her heart swell as she squeezed her step brother’s body. 

“I love you, Jaune.” 

“Love you too… Sis.” Ruby groaned, pulling back and gently punching her step brother. He laughed as she glared at him, her face a bright red.

“Not funny, Jaune!”