Chapter Text
Nui licked her lips. The sight in front of her was an absolute feast, one better than any array of food. And it was one she intended to fully sample.
In front of her, Ryuko was walking down the hall. She was swinging her hips from side to side, her fat cheeks not even remotely hidden by Junketsu. Each huge, perfect globe jiggled as her high heels forced her to walk like that. Nui could already see her fingers sinking into each cheek, the fat orb warm and soft underneath her hands.
Nui slowly exhaled. She was feeling pretty horny all of a sudden. And she knew exactly how to work out the heat that had started to rise in her lower belly. With a wide, happy smile on her face, she skipped forward, getting ahead of Ryuko before turning to smile up at her.
“Hello, dear sister Ryuko,” Nui said happily.
She paused momentarily to run her gaze up and down Ryuko’s front. It was just as fine of a sight as Ryuko’s ass as. She looked even better in white than she did in black, and Nui was sure she would think that even if Senketsu wasn’t a filthy traitor to the cause. Nui had turned all of her considerable skill in fashion to redesigning Junketsu to properly show off Ryuko’s body.
At first she had thought about making a hard shell over Ryuko’s breasts with a white and blue strip running down to her waist. But then Nui had decided that Ryuko’s boobs deserved to be shown off. And to give Nui or Ragyo or whoever decided to use Ryuko easier access.
So now, in addition to the impressive shoulder growths, Ryuko had two thin triangles going down and covering her breasts. Both of them just barely covered her nipples, with plenty of sideboob, underboob, and, with the strip connecting, the breasts were held together tightly enough to create cleavage. Nui was very proud of her work, and never passed on the chance to admire it or the body that it was on.
“I’m not your sister,” Ryuko said dazedly. She often sounded confused, her mind still adjusting to the proper truths Ragyo had instilled in her. The fog only cleared when she was fighting or fucking.
“Oh, of course we are,” Nui said happily, wrapping Ryuko in a hug. Her hands immediately went to Ryuko’s ass, squeezing each fat cheek in turn. “We both Ragyo as our loving mother, don’t we?” And Ragyo was a very loving mother to both of them. Almost every night, she loved one or both of them.
“Um, I guess…” Ryuko said slowly. Nui smiled as Ryuko’s cheeks started to darken as Nui kept on groping her ass.
“Of course I’m right,” Nui said cheerfully. “Remember, you can always leave the thinking to me!” Ryuko slowly nodded. “And now I’m thinking we should have sex. Don’t you?”
Nui already knew the answer to that. She could feel Ryuko starting to press against her belly. She smiled winsomely, and started tugging on Ryuko’s hand, leading her back to Nui’s quarters before Ryuko could even say anything.
Ryuko stumbled after Nui, her high heels clacking on the hallway floor. It was a pity that Nui couldn’t turn around and see how Ryuko jiggled as she walked, but she would have the chance to do it in her own rooms soon enough. Not that Nui was opposed to having sex out in the hall, but she didn’t have any of her toys and restraints with her at the moment. And sex was so much more fun when she was properly equipped.
Skipping into her quarters, Nui slammed the door shut as soon as Ryuko was inside. That done, she leaped up onto the black-haired girl, wrapping her arms and legs around her in a tight hug. Smiling widely, she pressed her lips against Ryuko in an enthusiastic kiss.
Nui pressed her tongue against Ryuko’s lips, forcing it inside her mouth. Ryuko was kissing her back, but far more submissively, as was only right and proper. Her arms came up to hold Nui in a hug, resting against her back. And underneath Nui, she could start to feel Ryuko’s dick pressing against her thigh. Inwardly, Nui smiled.
It was always so easy to get Ryuko excited. Probably because she was an exhibitionist, and Junketsu was one of the more modest outfits she had been given to wear. It was way easier to get Ryuko excited than it had ever been for her older sister. And while Nui enjoyed a challenge, it was also fun to get together with someone who was always ready and eager.
By the time the two of them parted, both Nui and Ryuko were blushing and panting for breath. Nui smiled widely. Her nipples were stiff against her dress (with built-in bra) and she could feel her pussy start to moisten. And Ryuko was in a far worse state. Her dick had entirely slid out of Junketsu and was pressed against Nui’s bare thigh. Nui wiggled it as much as she could, smiling at the noise Ryuko made in the back of her throat as her lower head slid around Nui’s skin.
“What shall we do today?” Nui asked, detaching one arm from Ryuko to tap her chin. “Should we play dress up? I always made big sis Satsuki look so pretty when I put her in latex as Doll. And I’m sure I could find some more that will fit you like a glove!” Nui’s brain was buzzing with ideas as she started into Ryuko’s eyes.
“Oh! Or I could take you down to the Life Fibers pit. Remember them? They’d fuck you so hard! We wouldn’t even be able to tell that you were Ryuko when they were done, there would be so much cum covering you.”
Nui’s breathing was becoming huskier as perverse idea after perverse idea flashed through her mind. The biggest problem was that she wouldn’t be able to do all of her ideas today. But that was the only real problem. There was certainly nobody who would tell her no.
“I’ll do whatever you say,” Ryuko said quietly, not looking Nui in the eyes.
“Oh, of course you will,” Nui said happily, patting Ryuko on the cheek. “You being so obedient is one of your best traits, now that we’ve gotten rid of all that stupid rebelliousness!”
Nui released her grip on Ryuko, dropping to the ground. In an instant, she was wrapped around Ryuko in a hug again. This time, though, she had one hand wrapped around Ryuko’s dick, slowly stroking it. She smiled up at her big (in so many senses of the word) sister.
“But today, I think we’ll just stay in here. I won’t even have you suck off some REVOC employees. Aren’t I nice?”
“Yes, Nui,” Ryuko said. She was starting to shift her hips as Nui jacked her off. It was adorable.
With the hand Nui had on Ryuko’s ass, she could feel the muscles shifting around underneath the fat, heart-shaped ass. Maybe she should spank Ryuko. Not that she had done anything wrong, but that sort of thing simply didn’t matter to Nui. If she wanted to spank Ryuko, then she would spank Ryuko, regardless of how she had behaved. There was something so liberating in that kind of worldview.
And it was a treat to spank Ryuko. The way her ass jiggled underneath each slap was better than food to Nui. And, just like their older sister, Ryuko was tough enough that Nui could settle into a good rhythm without having to worry about actually damaging her. Maybe that was what Nui would do. Bend Ryuko over her lap and spank her with one hand while giving her a handjob with the other. The blend of pain and pleasure always interested Nui.
But first she should get Ryuko out of Junketsu. After all, if Nui wanted to play dress up with her later, she would need a blank canvas to work on. Letting go of Ryuko, Nui stepped back.
“Strip, Ryuko,” Nui said easily. “And remember to treat your clothing with the proper respect!”
Nui sat down on her bed, humming to herself as she watched Ryuko strip. It was a fairly complicated task to get out of Junketsu, since he had never really been designed to be removed in his battle state. But Ryuko’s struggles with it still gave Nui a chance to slowly, idly touch herself as more and more bare, soft, warm skin was revealed.
Finally, Ryuko straightened up, the last part of her outfit safely hung up. Nui took a moment to appreciate the jiggle of Ryuko’s boobs as she stood up straight. She really was beautiful. Nui supposed it was a good trade, exchanging Ryuko for Satsuki, though she would have really preferred to have both of her older sisters with her, so they could all be a happy family together underneath Ragyo.
“Now come over here and help me out of my dress,” Nui said, sliding off her bed and raising her harms over her head.
She was sure that this would take a lot less time than taking off Junketsu had. After all, the only thing Nui was wearing was her dress. She hadn’t even included any panties.
Ryuko stepped in front of Nui and slowly lifted Nui’s layered pink dress off of her, taking the care appropriate when handling a creation of REVOC’s Grand Couturier. Which was quite smart of her, since even wrinkling it would earn her an actual punishment, something far more intense than any spanking. Maybe Ragyo telling Ryuko that she was disappointed in her. That ought to do it.
Once it was off and neatly folded and put away, Ryuko turned back to Nui. Nui took the chance to take another good look at her older sister. And she thought Ryuko looked just as sexy naked as she did in Junketsu. Nui knew that was a bit of a slur against her skills as an artist, but it was true. The way Ryuko’s slender dick stood up from her crotch, standing stiff and strong made Nui’s lips water as she stared. And then there the clean lines of her limbs, not overly muscled, but still with the strength to hold Nui up no matter what Nui did. And then there were the breasts, perfectly shaped mounds standing out from her chest, with a stiff nipple capping each one.
As for Ryuko’s face, well, that didn’t change whether or not she was wearing Junketsu, though Nui did have some ideas for veils and the like. But all in all, she was an absolute treat to look at. And Nui knew she would be even tastier to sample.
While Nui was watching Ryuko, Ryuko was watching Nui. Nui spread her legs a bit, letting her sister get as much of a view as she wanted. Nui knew she was attractive, even if she was built on a smaller scale than Ryuko. Her shaved smooth peach, her breasts, and, of course, her innocent, smiling face.
“Get over here,” Nui said.
Ryuko responded instantly, walking over to Nui. Nui was delighted to see that Ryuko put as much sway into her step as if she was still wearing high heels. It made her erect cock sway from side to side in a delicious manner. Nui licked her lips, wondering if she should start with a blowjob or wait until Ryuko was begging for it.
Ryuko stopped just in front of Nui, looking down at her. Nui smiled at the spots of red on her cheeks. Her sister was one needy girl.
“Get down on your knees,” Nui said happily.
Ryuko’s knees hit the carpet almost before Nui had finished speaking. Instant obedience, that was the kind of thing Nui liked to see. And it was only fitting, given how rebellious and willful Ryuko had been before Ragyo took her back into the fold.
Nui’s bed wasn’t very high up, and Nui wasn’t very tall. That meant that she was in an excellent position to play with the kneeling Ryuko’s boobs. And Nui had a healthy appreciation for breasts. Especially big, soft breasts like Ryuko’s.
Nui leaned forward and gently grabbed both of Ryuko’s tits. She smiled as her fingers slightly sunk into the soft orbs and made Ryuko whine. She could feel a stiff nipple pressing against her each of her palms as she played with Ryuko’s tits.
“I definitely made the right choice in changing Junketsu,” Nui said happily. “These breasts need to be shown off. Don’t you think so, Ryuko?”
“Mmh. My body is for people to look at,” Ryuko said obediently.
Nui smiled at the appropriate response. It was so good that Ryuko had properly internalized her lessons. Since Ryuko didn’t have a position in REVOC like CEO or Grand Couturier, she had to do something to earn her keep when she wasn’t being sent out to deal with those no-good free thinkers in Nudist Beach. And being decorative eye candy was very useful. And sometimes more, whenever any company employees got up the courage to do something the hot, scantily-dressed teen that wandered around the office.
And it had taken even more special counseling for Ryuko to accept that her body was also for people to use. But she hadn’t been able to refuse her beloved and loving mother after Ragyo had led her into the boardroom full of REVOC’s top executives and told them that Ryuko was free for them to use.
Nui smiled as she molested Ryuko’s tits. She had seen Ryuko get carried out of the boardroom after that. She had been fucked so hard she hadn’t been able to get her legs to work. Both Nui and Ragyo had been so happy that Ryuko had properly accepted her place underneath her mother’s vision.
And all that told Nui why she didn’t expect any trouble from Ryuko. She knew what she was supposed to do far too well. Not that that meant Nui didn’t have plans to tie Ryuko up and punish her and do all the other things that she had been forced to do back when Ryuko was being bad. Spanking that fat ass was just too much fun to stop doing just because Ryuko was an obedient girl now.
Nui licked her lips as she kept on playing with Ryuko’s tits. They squished underneath her hands in a lovely way, and each caress made Ryuko moan and squirm a bit. It was beautiful to see someone who was so tough and fiery on the battlefield act so weak and helpless in bed.
Speaking of which, Nui should probably get Ryuko into the bed. Letting go of Ryuko’s tits, Nui hopped off the mattress, smiling down at Ryuko. She ignored the fact that, even with Ryuko kneeling and Nui standing up, her sister’s head still came up to her chest.
“Get up on the bed, Ryuko,” Nui said in a happy voice, absolutely sure that her orders would be obeyed.
And they were. Ryuko climbed up onto the bed and then looked at Nui. She had a very lustful gaze, and her cock looked like it was as hard as it could be. And that was absolutely perfect.
“Now lay down on it, and point your feet and hands towards the corners,” Nui said, calling out over her shoulder as she headed for the small workshop next door. “Like a X!”
It only took a moment for Nui to gather what she needed. When she stepped back into her bedroom, she was happy to see that Ryuko had done exactly what Nui had wanted. Her big sis was splayed out on Nui’s bed, just waiting for her. It was nice to have such an obedient sister.
“I’m back!” Nui unnecessarily announced. Four ribbons of cloth, each one a different color, dangled from her hand. “Now we can really start to play!”
“Okay, Nui,” Ryuko said. It sounded as if her mind wasn’t fully tracking, as if most of her thought was focusing on the lust surging through her body. How wonderful.
Hopping onto the bed with Ryuko, Nui laid each ribbon down on Ryuko’s stomach, for easier access. Black, blue, red and white. None of them were very long, but each one should be enough to tie a limb to the bed. And then, once Ryuko was completely under Nui’s physical power (she was already there mentally), the fun could really start.
Humming to herself, a smiling Nui grabbed the first ribbon. Ryuko stared at it, licking her lips. That was good to see, Nui thought. Obviously, her body associated bondage with all the various kinds of pleasure Nui and Ragyo had inflicted on it while convincing Ryuko about her proper place in the world.
Nui quickly and neatly tied Ryuko up. In a matter of moments, her sister was firmly lashed to the bed, each wrist and ankle in a different corner. And there was absolutely no way Ryuko was breaking out of it either. She just wasn’t strong enough, not without Junketsu or Senketsu. She was going to stay on Nui’s bed until Nui decided to let her go.
And Nui certainly wasn’t going to do that until she had satisfied the fire raging in her belly. So at least one, maybe two, maybe more, orgasms. And if she was feeling very generous to her sister, Nui would let Ryuko cum as well, instead of just cutting her loose once Nui was satisfied. That was a lovely image, Ragyo forced to leave Nui’s rooms, her hard dick wet with Nui’s arousal.
But no, Nui was feeling kinder to her sister than that. She’d let Ryuko cum, though she hadn’t quite decided where. In or on Nui, maybe. Or maybe along Ryuko’s stomach, or lift her hips up so that Ryuko covered her own face in her cum. There were so many different ways to do things, every single one of them fun.
Nui sat down on one of Ryuko’s thighs. She leaned forward, grinding her hips against Ryuko’s leg. It felt nice, rubbing her pussy against something soft and warm. But Nui knew that it would feel even better to put her pussy around something hard and hot.
“How are you feeling, Ryuko?” Nui asked, drawing her fingertips along Ryuko’s shaft.
“Tense,” Ryuko admitted. Her cock throbbed as Nui lightly touched it.
“Really?” Nui asked innocently. “Why don’t we figure out a way to help you unwind.”
“Yes, please,” Ryuko said, closing her eyes. She was almost begging Nui to do it.
And Nui planned to help her sister out. After all, that was what family did for each other, right? They’d sink down on a hot, hard cock, wrapping their wet, sensitive pussies around it as both of them cried out in sweet, sweet bliss…
Nui ran a hand across her mouth, making sure she wasn’t drooling. Oh yeah, she was ready for this. So was Ryuko, though that was a bit less important.
Lifting her hips up, Nui walked herself forward a bit on her hands. And then, when she was hovering above Ryuko’s shaft, Nui stopped. Nui slowly, slowly, lowered herself down so that just the tip of Ryuko’s dick was pressed against Nui’s entrance. Nui slowly rocked her hips back and forth, feeling the tingly sensation of her arousal leaking out of her. The hand she had wrapped around Ryuko’s dick could feel the arousal trickling down the hot shaft.
“How are you feeling today, Ryuko?” Nui asked. “I don’t think I’ve asked you yet, and it was rude of your little sister not to take an interest in how you are doing.”
Nui’s smile was as wide and happy and innocent as could be. She was truly enjoying herself, and felt even happier when Ryuko threw her head back and groaned.
“Please, Nui,” Ryuko said. “Stop wasting time and just fuck me!” She sounded tortured, as if she would die if she didn’t get some relief.
“Fuck you?” Nui asked, covering her mouth in shock. “You mean you want me to ruin my pretty, pink, perfect pussy on my big sis’s big cock? To ride you until neither of us can feel our hips anymore? To make sure the both of us cum so hard neither of us can think?” Nui paused for a second. “Alright.”
And then she dropped down.
Instantly, Nui went as far down Ryuko’s shaft as it was possible to go. She didn’t go all the way, there were still a few centimeters between her and Ryuko’s bodies. But neither of them was complaining about that. Both of them groaned, closing their eyes at the feeling of each other’s bodies.
Nui fell forward, catching herself by planting her hands on Ryuko’s stomach. She kept her eyes closed, slowly adjusting to the feeling of Ryuko’s shaft inside her. She had felt it before, but it was always so good to experience it one more time. Nui squeezed down, drawing another moan from Ryuko and then relaxed.
Nui shakily exhaled and opened her eyes. The sight of Ryuko beneath her, face red and scrunched up, was just too adorable for words. Nui wanted to eat her up. Smiling, Nui straightened herself up, resting her hands on her thighs.
“Are we having fun yet?” Nui asked, her voice wobbling a bit as she talked.
“Ye, yeah,” Ryuko managed to get out. “Please, move.”
Nui knew she had made the right choice, bringing out the bondage. Taking away her partner’s control, and leaving them completely and utterly at her mercy was such a lovely game to play. And it was one that Ryuko had learned to love just as much as Nui, though she had a rather different part to play in it.
“Move?” Nui asked innocently. “You mean you want me to leave you and get back to all that work that’s piling up? Well, if you’re sure…” Nui said, shrugging.
Planting her hands on Ryuko’s lower stomach, Nui made to lift herself up and off of Ryuko. The tortured groan Ryuko made at that brought a smile to Nui’s face.
“No, please!” Ryuko begged, not a trace left of the confident, cocky fighter Ragyo would deploy. “Please, please, fuck me!”
“Oh!” Nui said, acting shocked. “Why didn’t you say so?”
And with that, she lowered herself back down onto Ragyo’s dick. And then she shifted her hips from side to side a bit, making Ryuko’s cock move around inside her a bit. The look of needy happiness that appeared on Ryuko’s face was so sweet Nui wished she had a camera.
Nui started to ride her sister, rising up and falling down in stroke after stroke. She leaned forward enough that she could play with Ryuko’s breasts. They were just as fun to touch with Ryuko laying down as they had been with her standing up. And just as fun naked as when she was clothed and so on and so on. The point was, Nui enjoyed making her sister squeal and squirm, and Ryuko did a far better job of that than Satsuki ever had.
Nui squeezed down inside herself, tightening her inner walls around Ryuko’s dick. Ryuko moaned and twitched from side to side. Nui glanced at her hands, and saw that Ryuko was alternating between closing her hands into tight, bloodless fists, and scrambling at the posts she was tied to. It was cute, and Nui wondered what Ryuko would do if her hands were free. Grab Nui’s hips so tightly even she would feel a bit of pain, probably.
But Nui wasn’t planning to untie Ryuko until she was so tired that she wouldn’t even be able to bring her hands to her sides, let alone do anything with them. She wondered how many orgasms that would take, on both their ends. There was only one way to find out, she supposed.
Or maybe she’d change her mind. It was always good to shake things up and not let things get too stale. Variety was the spice of life, after all.
Humming to herself, Nui bounced up and down on Ryuko’s cock and wiggled from side to side. It felt nice to have it shifting around inside her, stirring up all kinds of wonderful sensations. But there were ways to make it feel even better.
Lifting her hands, Nui started playing with her breasts. There was more than enough there for her hands to keep on roaming, slowly massaging her boobs and teasing her stiff nipples. Nui hummed a little tune to herself as she rode Ryuko, feeling her orgasm rise and rise.
Nui had always been on a hair-trigger, in several different ways. But the most relevant one right now as how quickly she could cum. Especially after so long playing with Ryuko’s body before her dick entered Nui’s pussy. Nui thought she’d be orgasming in a minute or two. And that the training Ryuko had undergone meant that she would be taking much, much longer.
“You feel really nice inside me, Ryuko,” Nui said chipperly. “You know how to treat me exactly right, don’t you?” She didn’t look down at Ryuko as she spoke, instead closing her eyes to focus on what she was feeling inside.
“Yes, Nui,” Ryuko said obediently, though Nui could tell that her sister had just said that because she had to say something instead of her actually believing it.
“We’re both such good girls,” Nui said, reaching down to pat Ryuko’s cheek. Then she started playing with her breasts again.
Nui was sure that Ragyo would agree with her that they were both good girls. And their mother had such wonderful ways to reward girls who were good. Nui shivered at the thought of what Ragyo could when she was happy with Nui.
For just one example (one that Nui loved to get), there were the Life Fibers. On one hand, the orange tentacles could be absolutely relentless and unforgiving, like they had been when Ryuko was coming to learn why she should join the right side. They could fuck and fuck and fuck until Ryuko or Nui or whoever else had been disobedient was a limp, cum-covered mess who couldn’t even think, much less disobey.
And on the other hand, they could also slowly, oh so slowly, tease and arouse Nui, until she was practically bursting with need as the tentacles crept across her flesh, lightly playing with every one of her sensitive spots. The few times Nui had been allowed into the pit as a reward rather than as a punishment, she had cum two or three times before the Life Fibers had even inserted a tentacle inside her.
Speaking of cumming, Nui’s orgasm felt great. She softly moaned, feeling her pussy squeeze down around Ryuko in a tighter grip than she could ever consciously manage. She could feel even more arousal rushing out of her, running down Ryuko’s dick and onto the bed.
Nui hunched over herself, softly breathing in and out. It had felt good. It had felt so very good indeed. She could feel a lot of the tension and lust that had built up inside her leave her. But there was still more there, and Nui just had to get it out. And she had the perfect way to get the rest of it out.
Smiling, Nui reached down and patted Ryuko’s other cheek. She wiggled her hips from side to side as she did so, drawing a sweet groan from her sister.
“Don’t give up now, Ryuko,” Nui said. “I have…” she paused, trying to decide how many more orgasms she wanted. “I’m not done with you yet! And surely you don’t want to give up on my sweet little slit. You don’t, right?”
To make sure Ryuko gave the right answer, Nui rose up, until only Ryuko’s lower head was still inside her. She shifted her hips back and forth a bit, almost letting it slip out. It felt a bit bad, not to have Ryuko’s cock filling her up and satisfying her lust, but Nui was sure that it felt even worse for her big sister.
“Yes! I mean, fine, sure,” Ryuko said hurriedly. “I agree with you, just keep fucking me!”
Nui giggled. Her sister could be so funny! And because Nui was a good sister, she dropped back down, letting Ryuko fill her up once again. The sigh of satisfied relief Ryuko let out was sweet to Nui’s ears.
Nui started properly fucking her sister again, feeling her orgasm slowly rising inside her. The lovely warm tingles bouncing around her insides told her that, once again, she wouldn’t have too long to wait before she was once again shaking in climax. Nui wondered how long it would take Ryuko to cum as well.
And how much she would cum. Nui from hands-on experience (and mouth experience, boobs, pussy, ass, so on and so forth) that Ryuko could cum a lot even soon after an orgasm. But she would cum even more if it had been a while since she had last gotten her rocks off. Ah, the fun Nui had had, tying her sister up in red ropes and leaving her there for a day or so in order to ensure that Nui got the data she wanted.
Enjoyable memories aside, if Ryuko hadn’t cum recently, then when she did, she would absolutely flood Nui’s pussy with her seed. And that could feel nice, obviously. Feeling the heat rising inside her, filling Nui up with a satisfied warmth was quite lovely. But it also made a mess that could be hard to clean up. If Ryuko was really backed up, then Nui might be feeling her sister’s seed dripping out of her for the next couple of hours, distracting her as she went about her work.
Nui decided she didn’t want to get a creampie. It was just to much of a mess to cleanup afterwards. Even when she made Ryuko (or Satsuki, once upon a time) lick her cum out of her. No, she’d either let Ryuko cum on her belly, or maybe just let Ryuko cum on herself. Or maybe she wouldn’t let Ryuko cum at all.
Nui smiled widely at that thought. It would be so amusing for Nui to her fill, and then, with Ryuko whining and struggling underneath her, just stop. Get off the bed, take a shower and come back and then, and only then, once Ryuko’s arousal had finally died down, and her cock was limp, untie her. That would be so funny.
“What’s so funny?” Ryuko asked, looking up at Nui. Her brow was furrowed in a pale imitation of what their older sister could do.
“Oh, nothing, nothing,” Nui said happily. “Just thinking about what we can do together in the future!”
That seemed to satisfy Ryuko. Not that she had a choice, trussed to the bed like this. That was how Nui preferred her partners. Firmly under her thumb, letting Nui do whatever she wanted to them. And Nui had some pretty expansive wants. It was only because Ryuko was her dear, sweet sister that she wasn’t writhing under the full force of Nui’s imagination.
And being part of Nui’s family meant that people would get a special level of care and affection from her. That meant that the metal case stayed closed, and that Nui didn’t even think about doing anything that would need some wood stain remover. Because Ryuko mattered to her.
And right now, a special part of Ryuko was really mattering to Nui. She rocked back and forth, feeling her sister’s dick inside her. Nui was almost at her limit, and from the way Ryuko was twitching underneath her, she was about to cum too.
Nui came first. Once again, she started shuddering on Ryuko’s cock, feeling herself melt around her sister’s hard rod. The pleasure welled up inside her and spread out, filling her up all the way to her fingers and toes. Nui sighed deeply, feeling a wonderful sense of sublime happiness.
The way Ryuko’s cock was twitching inside her was almost enough to ruin the mood. It demanded action if Nui didn’t want to end up creampied after all.
Lifting her hips up, Nui slid herself off of Ryuko’s cock. The sound of her tight, wet pussy coming off of Ryuko’s cock was lost under the betrayed whine Ryuko made. Nui looked at her sister and smiled at the horrified look on her face. It was absolutely precious beyond compare. Obviously Ryuko thought that Nui was going to do something cruel like leave her there, dick hard and aching, and her limbs still tied to the bed. Leave her there until her cock went all soft and limp and there was no hope for Ryuko to orgasm quickly. Such a terrible thought. Who could even imagine doing something like that?
Luckily for Ryuko, even though Nui could easily imagine that, she couldn’t do it to her sister, when it came down to the moment of decision. That would be just too cruel. Instead, Nui reached down and wrapped her fingers around Ryuko’s cock. It twitched in her grip.
“Here you go, Ryuko!” Nui said, without a hint of malice in her voice. “I hope you have a great orgasm for being such a good sister!”
As she spoke, Nui stroked Ryuko’s cock, her hand quickly moving up and down its slick surface. She could feel her arousal sticking to her palm. It only took a few smooth strokes before Ryuko came.
“Nui, Nui!” Ryuko called out, shaking like a leaf in her bondage.
Nui watched with fascination as Ryuko came, long jets of white cum shooting high up from her dick and landing on Ryuko’s belly. There were three large, long jets, that made an utter mess of Ryuko’s stomach, smearing her hot white cum all around it. And there was one more, lesser, shot, that dribbled down her cock and Nui’s hand.
Nui smiled to herself as she wiped her hand clean on Ryuko’s thigh. That was so lovely to see. To know that she controlled her sister’s pleasure, and it was only with her desire that Ryuko had been allowed to cum. And Ryuko was quite the sight even now. With her belly covered in sticky white cum, her head turned to one side and her red cheeks rising and falling as she panted for breath. It was absolutely lovely. Nui wished she had a camera, so she could add today’s session to the collection she had of herself, Satsuki, Ryuko and Ragyo.
Ah well, there would be other chances later. So, so many chances. Nui sat down on the bed in between her sister’s spread legs and smiled happily at her. She reached out and ran her hand down Ryuko’s thigh, feeling the muscles quivering underneath her skin. So strong, and so helpless right now.
“So, do you have anything else you need to do for the rest of the day?” Nui asked, letting her fingers trail down to play with the ribbons binding Ryuko to the bed.
“I, I,” Ryuko panted for breath, still kind of out of it from her orgasm, “Mother wanted to see me about attacking some Nudist Beach rebels. But that was after she was done with her meeting in an hour.”
“An hour…” Nui said to herself, thinking. Sadly, she decided that an hour wasn’t enough time to have some proper fun with her sister. Not if Ryuko wanted to be presentable to their mother.
“Okay, I’ll untie you,” Nui said, giving her favorite big sister a smile.
As her fingers started undoing the binds, Nui’s mind wandered. She hoped Ryuko would do a good job taking care of those no-good nudists. Oh, maybe if she did really good, Ragyo would reward her! And maybe even have Nui do the rewarding! Ragyo was sometimes nice like that. And Nui would welcome the chance to get to spend more time with her sister underneath their mother’s loving gaze.
Nui loved being part of this family.