A/N: Well, I never thought I'd ever go back to writing RWBY smut again, but after the recent episode that introduced Jaune's sister Saphron and her wife Terra, I decided to change that by writing some perverted incestual love between our favorite knight and his sister, but this time, I've decided to continue writing RWBY smut after this, so if there's any couples you want me to write, whether it's straight, gay, threesomes, futa, etc, PM me (no NTR or gross fetishes though).

Also, I'm calling this ship "Crescent Planet."

Quality Time with the Arcs

Everyone at the Arc-Cotta house were planning to go visit the Atlas military base at the edge of the city to inquire about getting a ride to Atlas when Jaune's older sister, Saffron, stopped them before they could all head out. "Sorry, but, Jaune, would you mind staying here? I need some help moving some boxes out of the basement, and I figured my little brother would be so kind as to help his sis," she said with a kind tone and a smile.

"Seeya later, Jaune!" Nora told him before everyone headed out the door, with Saphron closing the door behind them and watching them disappear down the street, with the female Arc locking the door and closing the curtains.

"I suppose you can guess why I really wanted you to stay, Jauney," Saphron cooed as she put her arms around her brother. "I really missed you, and look how much you've grown since you left for Beacon; you're already a big man now, though I helped you become a man before you left for school." She rubbed her hand along his crotch area as she said that last part, giving Jaune a wink and a smile.

"Saph, you really want to do this?" Jaune asked as his face grew red at her touch. "I mean, what about Terra? I figured you'd give up on this…game, as you called it, after you got married to her."

"I still love Terra, but it doesn't mean I can't give my favorite brother some sisterly love." She pulled herself close to him and looked up at him with her smile. "Besides, I'm sure you're all pent up from everything you've been through, right?"

"I'm your only brother…" Despite her position, he made no attempt to stop her as she undid his armor straps and gauntlets, which she set aside by the coffee table. "…and I am a little tense…"

"See, you should definitely relax then." Saphron pushed herself against Jaune's chest, rubbing her breasts against him, her face a deep red. Jaune swallowed hard, but his hands found their way around his sister's waist before going south and groping her butt cheeks. "I see you still like my butt." Saphron unbuttoned her vest and pressed her boobs against him again. "So, you want to spend some quality time with your sweet sister?" she asked as she inched closer to his face, her lips pursed open in a smile.

"Yeah…" With that, Jaune leaned in and pressed his lips to Saphron's, where they softly moaned as they kissed. Saphron leaned into her brother, making him step backwards. Their hands explored each other, with hers around Jaune's neckline and his digging into her jeans' waistline, his fingertips touching her warm skin. They both backed up and Jaune fell onto the couch while Saphron climbed onto his lap. They kissed again, this time, Jaune poked his tongue at her lips, to which she opened up and they traded tongues while his hands pulled up the backside of her shirt, allowing him to feel her skin.

"Hmmm seems you've learned to take initiative while at Beacon," Saphron cooed, thinking back to how prior to Beacon, she had to lead in everything when she and Jaune first had sex together. "which probably means your stamina has increased since last time." During their first time, Saphron learned of how male Arcs seem to have massive sexual stamina, as Jaune last for over 3 hours when she imagined he would last less than one due to his inexperience.

"Just you wait and see," Jaune grinned before pulling her vest and shirt off, catching his sister by surprise. He pressed his mouth to her bare breast's skin while his hands cupped them both, making Saphron moan in pleasure.

"Oh…wow…" she moaned. He's really improved a lot since last time. Only Terra could get me this wet so fast, she thought as her panties grew wet from her love juices. Jaune proceeded to remove his hoodie, exposing his well-toned chest to his sister, who drew in a deep breath at how much her brother has changed over the last year. Fuck, I can't resist my cute little brother! She went down onto him, rubbing her fingers along his toned abs as she kissed him again. Her hardened nipples rubbing themselves against Jaune, enticing her further. "Oh, fuck! Jaune, suck on my boobs again!" Jaune obeyed, slapping both of his sister's breasts together and wrapping his lips around both nipples at once, making her cry out. Inside his mouth, his tongue lapped around both nipples at once. "FUCK! JAUNE, I'M GONNA CUM! MAKE ME CUM, JAUNE!" Jaune pulled her closer, one hand on her butt and the other on the back of her as he continued sucking on her boobs before her voice suddenly cut out and she shivered on his lap. Her under region got vastly wet and her panties became soaked. Jaune let go of her boobs with a "pah" before giving her a grin.

"How was that?" he whispered. Her response was to go down and kiss him with a long moan.

"Incredible…so much better than our first time…" she cooed. "but you've been giving me so much pleasure while your cock is throbbing in your jeans." Her hand went down and rubbed at his massive bulge. "Would you like your sweet sister to make you feel good too?" she cooed again, to which he nodded with a smile. "Let's get these off of you then." With that, Saphron unbuckled his jeans and slid them off, allowing his erect penis to fly out and stand tall for her to see.

Saphron gasped at its size, her face flushed red. "Still as big as I remember, probably more now," she remarked before pressing her face against it, giving its base a soft kiss. "Ahh, it's so hot, you really want this, don't you, Jaune?"

"Not like you don't want it more," he retorted with a smirk. Saphron smiled back while taking his cock in her hand and dribbling saliva onto it and giving it a rub down. "Ahh…that feels so good, Saph…"

"I thought you'd like that," she cooed before giving his cock's head an open-mouth kiss, followed by a long lick of his shaft from all sides. "How's this?" she whispered before sinking her teeth into his shaft, making Jaune twitch from the sensation.

"So good…I'm getting close…" he moaned with one eye closed.

"Already? Guess the Arc's sexual prowess goes both ways." Back then, I only sucked him off to keep things simple for his first time, but now…Saphron lifted herself up along Jaune's hips, allowing her breasts to rub against his cock, before she went back down, now with his hard member lodged between her breasts, making him moan loudly. "There, that's better, isn't it? Your hard cock is in between your big sister's tits, and it's SO hot and it's making me super horny," she cooed before giving his head a soft kiss.

Saphron began bouncing her tits up and down on Jaune's cock as she took his head into her mouth, causing him to moan loudly from the sensation. Gods, he's so cute like this! I wanna fuck him! "Let me know when you're going to cum so I can swallow it all, Jaune."

"Sis…!" Jaune choked, which was a signal for Saphron to take his cock into her mouth, where he sprayed his cum into her cheeks, making her gasp before she swallowed it all down her throat. Saphron pulled away for a minute giving a little cough upon finishing. She looked up a Jaune and showed him her open mouth coated with leftover semen before closing with a smile. "C'mere…" She hopped onto his lap and kissed him again, trading tongues, and allowing him to rub her breasts again.

"I want more, Jaune…I want you to fuck me…" she whispered into his ear before climbing off, where she turned around and slowly slid her pants down, giving her brother a full view of her butt and wet pussy in the process, before tossing them aside and standing before him in all her glory. "How do I look?"

"Sexy," purred Jaune. With that, Saphron sat back onto his lap, hovering herself over him as she ran her hands down her breasts, stomach, and towards her pussy. Jaune leaned forward and kissed her navel, making her moan. His fingers teased her pussy, making her wince with a yelp, before he slid two fingers in, making her moan. He thrusted inside of her a few times before she took hold of his hand, making him stop.

"Don't make me cum again, not without your dick in me, little brother…" she moaned.

"You got it." With that, Saphron lowered herself down and allowed Jaune's penis to tease her entrance before she went down further, making his cock disappear inside of her with them both moaning. "Fuck, your pussy feels so good, sis!"

"It feels better than the first time…I want more!" she cried before falling onto Jaune and bopping up and down, moans of pleasure escaping them both. They both relished in this forbidden taboo for minutes before Jaune's scroll suddenly rang, prompting him to reach for it from his jeans' pocket while Saphron kept him in place, focusing on bouncing on his wet cock while he answered the call, which turned out to be Ruby.

"Hey, Jaune, so you know, we won't be returning to the house anytime soon. Nora went into a coffee shop when we weren't looking and she got hyper and ran off, so we have to look around for her. When you finish helping Saphron, could you come help look for her?" said Ruby.

"Yeah…yeah, no problem…" he moaned into the phone as Saphron continued slapping her lower half against his.

"You okay? You sound out of breath."

"Yeah, I'm…fine. I've just been carrying a lot of heavy boxes around, is all."

"Well, take it easy, okay?" As Ruby continued on, Saphron pressed her lips against Jaune's with a loud moan as the call was ignored. "Anyway, see you later tonight, knowing Nora."

"Seeya…" he got out in between kisses before hanging up. "She could've heard us, you know!" he spat out at Saphron, who merely grinned.

"Oh, c'mon, wasn't it hot to be on the phone with your friend while she was unaware that we were fucking?" Saphron cooed.

Jaune was silent for a moment. "…Yes. It was pretty hot." Saphron giggled and kissed him again, but she was quickly caught off guard by Jaune pushing her to the floor, where he flipped her onto all fours and teased his cock against her wet pussy. "Now I'm gonna fuck you from behind, sis." With that, he inserted himself into her and began thrusting, his hips making loud SLAPS against her butt with each thrust.

"YES! FUCK ME LIKE AN ANIMAL!" Saphron cried in sexual ecstasy. "FUCK ME AND FILL ME WITH YOUR CUM, JAUNE!" Jaune lifted her up, where he fondled her breasts and kissed her neck, where she cranked her head to the side to meet his lips with her own.

"You're so sexy, Saph. Maybe I should stay in Argus so we can keep fucking," he teased her.

"I wish…From now on, only your cock is allowed in my pussy, Jaune…I want only you to fuck me like this, okay, little brother?" He answered her by kissing her again and thrusting harder. "Jaune! I'm about to cum again! Cum inside your sister's pussy, okay?"

"You got it!" Jaune held her tightly as he thrusted faster and faster, making Saphron cry louder and louder until he finally thrusted in completely with a grunt and climaxed, shooting hot cum into her, making her cry out before her voice died out.

Jaune pulled out, allowing cum to dribble out of his sister's pussy and onto the floor, where she fell over, breathing deeply. She stretched her arms out to him, where he then fell onto her and in her embrace, where they passionately kissed while holding each other. "You were incredible, Jaune…"

"Thanks for the fun time…"

"It doesn't have to end yet, since we have plenty of hours for more fun." She winked at him.

"Want to go at it again?"

"No, I was thinking that we get Terra involved in our family fun."

Jaune sprang off of her. "No way would she be okay with this! You told me before that no one must know!"

"I know, but I know how to coax her into it and make her give into the temptation, if you're interested in giving my wife her first cock."

Jaune thought it over for a minute. "Okay, tell me what you have in mind."

( )( )( )( )( )( )( )( )( )( )

At the relay tower where Terra works, she was dozing off at her computer terminal when her scroll beeped with Saphron's assigned ringtone. She flipped it open to a text message, but she quickly hid her scroll in her lap when she saw the picture accompanying it: a smiling, naked Saphron with a beckoning finger with the message "Come home early. I have a special surprise for you: just the one thing you always wanted us to try in the bedroom. 3"

A chance for us to have a hot threesome?! She finally found someone?! She hastily typed out "Who did you get to join us?" before sending it, where she watched the text wall for a few seconds before three blinking dots appeared, indicating that Saphron was typing.

"You'll see. It's a surprise. ;3" That was all she needed to call out early and rush home.

Upon heading inside, she was greeted by Saphron wearing nothing but her bathrobe with her cleavage obviously exposed, which got Terra excited. The two women shared a loving kiss while Terra put her work gear aside and took off her shoes. "So, our participant?" Terra eagerly asked.

"Upstairs, and I moved Adrian in his crib to the guest room, where he's fast asleep," Saphron informed her, earning a thumbs up of approval. The two kissed again before heading upstairs. Terra's minds was swarming with various mixes and matches of various girls, wondering who Saphron got to join them.

Maybe a redhead. Oooh, another blonde would be fun! Maybe she went extra and found us a sexy black woman! Oooh, I can't wait! she wondered until they reached their bedroom, where Saphron motioned for Terra to enter first. Terra took in a deep breath and entered, but she came to a dead stop when she saw Jaune lying in their bed, his body completely naked. She instantly went red in the face and could only mumble out stutters before Saphron came up beside her, acting completely normal with a smile on her face.

"So, ready for our first threesome, honey?" her wife asked playfully, yet so serious.

Terra continued to stand frozen in shock at Jaune's naked body before her, but she soon gave an "eep!" when Saphron suddenly disrobed and approached Jaune, where the two kissed and began making out, which made Jaune's penis stand up erect, making Terra go "Eeeee!"

"Something wrong, hon?" Saphron asked, approaching her now.

"You…he…Eugghh…What the Hell?!" she garbled out. "When have you two…you two just…AAAAHHH!"

"I think she needs a little help," Jaune chuckled, going along with Saphron's earlier instructions.

"I think so too." Saphron pressed herself against Terra's body, making her blush a deep red and kept her frozen to the spot. "Must I help you unwind from such a stressful day, Terra honey?" Saphron leaned up and kissed her wife, moaning as she did so, where she then unbuttoned her blazer and shirt, opening it up and revealing her bare chest and bra. Jaune watched as his sister continued to pleasure Terra, shifting her bra to suck on her breast while her hand slipped into her pants and fingered her pussy, making her cry out.

"No…Jaune is watching…this is wrong…" Terra moaned, trying to remain morally in control. "…Saph…you fucked your brother…"

"I did, and it felt so good, and I want you to have him as your first cock," Saphron whispered as she continued pleasuring her wife. "You HAVE to feel him inside of you like I did."

"…No…it's wrong…this is all wrong…we can't…" She gradually began to lose her composure until Saphron suddenly released her from her sexual control, allowing her to breathe easy.

"I guess you need to see for yourself." Saphron went back to Jaune, where they kissed again, then she climbed onto his lap facing Terra, who watched them without moving, and she lowered herself onto Jaune's cock and took it into her pussy, moaning loudly. Terra's knees buckled and she gasped at the sight before her, but she would not move or try to stop them.

She watched with unblinking eyes as her wife had sex with her brother. She watched as his cock slid in and out of her pussy and she howled with pleasured. Just like whenever I use my strap-on on her, but she seems to be enjoying it more. Is it because it's a real dick, or is it because it's Jaune? Terra wondered as her legs grew wet. No! This is wrong! I need to stop this! And yet she would not move, and her hands moved to her breast to fondle herself and the other went into her pants. I have to…I want to…I want to join them… Terra bit her lip as she fingered herself, watching as Jaune continued to fuck his own sister, and the sight only aroused her more.

"Honey, you can join us, if you want. Just be sure to get naked first," Saphron cooed, blowing Terra a kiss.

Terra swallowed hard and stripped down naked. This is still wrong, yet I'm so horny… She made her way to the bed, where Jaune pulled Saphron off of himself so she could sit up at the edge and kiss her wife.

"You ready for our first threesome and your first cock?" she whispered.

"Y-Yes…and I want Jaune to be the one to give it to me…" Saphron smiled and gave her a kiss before moving over to the side so Jaune could face her. Jaune too smiled and stretched his arms out for her, where she slowly sat onto his lap, his erect cock brushing against her snatch, making her wince. "It's…such a strange feeling…"

"Don't worry, it'll feel good soon," Saphron assured her before teasing her breast.

"I'll go in slowly for you, Terra," Jaune promised before lifting her up and gently lowering her onto his cock. His head brushed against her, making her shiver and cry, until his head pierced her entrance, making her cry louder, then he slowly finished, going all the way inside.

"IT'S SO HOT!" Terra cried before falling onto Jaune, who pressed his lips to hers, catching her off guard, but she quickly gave in and moaned with him. Terra steadily began bouncing up and down on him, loud moans leaving her lips with each bounce while Jaune sucked on her breasts and touched her all over. "I can see you and Saph share some similarities with each other," she remarked as she watched Jaune suckle on her nipples like her child.

"Save some room for me, Jaune," Saphron added as she squeezed in and began sucking on Terra's other breast.

"Fuck, you two feel so good!" Terra moaned as she continued bouncing on Jaune's cock. "I wish you came around sooner, Jaune! Your cock is so hot!"

"I'm gonna cum, Terra!" Jaune warned her.

"Please…cum inside of me like you did with Saph!"

"How cute! Be sure to cum inside my sexy wife, Jaune!" Saphron informed him as she wrapped an arm around her brother and kissed him. Terra sped up until Jaune held her down and climaxed, shooting his hot cum inside of her and making her cry out in sexual ecstasy.

"My first time having cock…with my wife's brother…" Terra pleasurably moaned before pulling herself off of Jaune and taking a moment to catch her breath.

"Wasn't that fun, hon?" Saphron asked before kissing her, trading tongues and saliva.

"So much fun, Saph, but I still want more. My pussy has tasted cock and it needs more from Jaune." She spread her pussy lips open, showing them how wet she was.

Terra wasted no time in climbing back onto Jaune and reinserting his cock back into her pussy, making her moan loudly, then proceeded to bounce up and down again while Saphron kissed her brother and fingered her wife's clit as she bounced. "MORE! MORE! GIVE ME MORE CUM, JAUNE!" Saphron kissed him with open tongues just as he came again, shooting more hot liquid into Terra.

"My turn now, Jaune," Saphron whispered before trading places, where Terra then sat herself on Jaune's face, allowing him to effectively eat her pussy out while his sister's pussy engulfed his cock again. "Ahh, how's Jaune's mouth taste, Terra?"

"As good as yours, babe!" Terra moaned before she came, squirting onto Jaune's face with a cry.

Saphron bounced and shook her hips until Jaune finally came again, spraying her insides and making her scream in pleasure.

"Looks like Jaune still has plenty of stamina though." Saphron motioned at his still-erect dick with a giggle.

Terra smiled, licking her lips as she readjusted her glasses. "Maybe we should service our new play thing ourselves, make him feel good for making us feel good."

"Sounds like a good idea." The two women pushed Jaune onto his back and crawled up to his dick on all fours, where they then took turns licking and sucking on his cock. Saphron went first, taking every inch of her brother with loud and long moans while Terra anxiously waited for her turn, where she spent more time licking before sucking him off. The two then came together, sucking on Jaune's head a little before kissing each other, then going back to licking his shaft simultaneously. They then came together with their breasts and rubbed themselves up and down Jaune's cock, spurring him on and making him reach climax again, causing him to spray hot cum all over their faces and breasts, making them moan with pleasure.

"Thanks for the fun time, little bro," Saphron cooed as she gave him a pinch on the cheek as she playfully rubbed her breasts against his chest.

"Thank you for being my first time with a man, Jaune. It was exciting," Terra cooed before giving his cock a light rub and kissing his lips with tongues out. Finally, both women reached up and kissed his cheeks.

"We need to do this again before you and the others leave for Atlas."

"Definitely, but right now, I need to rest," Jaune groaned before his head collapsed into the pillows. Saphron and Terra snuggled up to him, where he wrapped his arms around them.

"I love you, Jauney," Saphron cooed.

"I love you too, Jaune," cooed Terra.

"I love both you girls," Jaune moaned before he fell asleep, with them following soon after.

They wouldn't wake up a few hours later, where they cleaned up, dressed, and acted like nothing out of the ordinary happened when everyone else returned. As Saphron would put it, "It's a family secret."