Not so bad, is it?" Nova said quietly.
"Not bad," Skye agreed. "Good. Nice." A wide grin overcame her lips. "Really nice."
"Wait for the cum," Nova advised.
"His or mine?" Skye asked.
"Either, honestly," Nova said. "Both."
Skye whimpered softly as I kept thrusting into her. We were both feeling good. So good. And Nova was right there watching and waiting for us to cum together, which was absolutely crazy, but that was my sister all over.
Aurora was actually first to cum, rubbing her cute little pussy next to us. I found that really hot, even while balls deep in Skye at the time. It got me fucking Skye harder, making her moan deeper and louder.
"You should cum now," Nova advised Skye. "Cum while your bro-ther is deep inside you. Be a good girl. A good little sister, ok? Cum for him. Cum for us. We want to see it."
Skye cumming on my dick was so satisfying, and felt incredible the way her pussy squeezed me tighter. I didn't last much longer before unleashing inside her as well, filling her with cum for the first time.
Nova was quick to get back to her notes as soon as Skye returned her hand to her.
"The incest kink is really, really working for us," Nova said out loud. "I'm curious now how prevalent that is."
I sighed theatrically. "How many people am I gonna have to fuck for you to get a good sample size?"
Nova glared at me. "Technically... a lot. In reality we're going to make do with the people in this room. And don't you--"
"Kidding, Nov. Kidding," I said. "I actually like that you can in fact get jealous though. Feels nice. Um... and I recognize the irony of saying that while I'm still buried inside your friend right next to you."
"I'm not jealous!" Nova said. "Not exactly. I mean... it's different." She nudged my shoulder. "Anyway, my turn!"
Skye shrugged and graciously allowed me to roll off of her. Nova was on top of me almost before I'd finished moving, already rubbing herself on my cock through her panties.
"You sure you're not jealous?" I asked. "You need to take those panties off by the way."
Nova proved me wrong, tugging her underwear aside instead so she could slip me into her pussy. It hadn't taken much for her to get me fully hard again, and I loved how quick and needy she was about taking me.
"I just... I need you to be mine again right now," Nova said. "It's not about jealousy. Just... I need you."
"It's ok to be jealous," I told her, grazing my fingers up her sides. "It's kinda cute actually."
"It is rather," Skye agreed, having turned to Aurora for post-sex cuddles. She lay back against Aurora and let her friend hold her for comfort. "I get it though. Makes things different knowing your brother cummed in my pussy now, huh?"
Nova let out a small gasp and rode me harder. "Maybe."
"But you think it's kinda hot too, don't you?" Skye teased.
Nova blushed and looked away from everyone else. "Maybe," she repeated.
"Hehe, get your brother cummies, Nov," Skye urged. "We can be slutty sisters together."
"Oh my goddd," Nova whined. "You're taking to this way too easily."
"You love it," Skye said.
It was true. My sister had multiple thoughts and emotions happening, that much was clear to me. But she did love the things Skye was saying, and she was at least a little jealous and possessive right now. These things all seemed true.
I actually really liked that Nova needed me to be hers right now. The feeling of being so needed at times was one of the things I loved most, and I felt it strongly in this moment.
I surprised Nova by flipping her over, nearly accidentally sending her tumbling off the bed, but mainly just getting her on her back long enough to yank her panties off. She looked at me with a mixture of stunned confusion and excited lust.
"On your knees," I said.
Nova's eyes flashed and she rolled over, getting to her hands and knees. I pushed her shoulders down so her face was on the bed and her ass sticking up. I slid back inside her, grabbing her hips to really make the thrust go deep.
"Oh fuck," Aurora whispered, watching with wide saucer eyes.
"I know, damn," Skye hissed back.
Nova whimpered and arched her back cutely, pushing back against my thrusts, wanting my attention and knowing I was all hers for now.
"I love you," I said. "So much. So very much."
Nova nodded and squirmed. "Cum deep in me, ok?"
"Fuccck, Nov," I panted. "Not yet, jeez."
"Unf. Well go harder anyway."
"Ah, goddamn..."
Nova was really laying claim to me. She slammed her ass back against me almost as hard as I was already fucking her. She'd never asked for it so rough before. I hadn't think she wanted or needed that until now. Maybe every now and then...
It was stupidly hot at any rate. Absolutely pounding the shit out of my sister in front of her friends. Nova panting and whimpering for more, murmuring filthy but loving things every now and then.
"You need... to cum first," I told her.
"Me?" Nova asked.
"Yeah. I don't want to cum until you do," I said.
"Unf. Not fair," she complained. "You're going to cum so soon!"
I grunted affirmatively. She was correct. "Better make it fast then, or I'll have to cum somewhere else."
"Mean," Nova complained. "So mean."
Her hand flew to her clit anyway. I couldn't see what she did to herself between her legs, but I watched her arm shaking and heard the distinct change in pitch of her cute little moans.
"Good girl," I said. "Cum for you brother. That's a good sister. You'll get my cum if you're really, really good for me."
Nova became an absolutely incoherent mess, somewhere between protesting her treatment and fairly melting to it. She loved it though, I knew that no matter what she said.
She did, in fact, cum for me. I wouldn't have been able to hold out much longer, and was glad that Nova came before then. I would have cummed in her anyway. I wasn't about to actually be so mean as to deprive her of what she needed. But I got to fill her pussy while telling her what a good sister she was, and we both collapsed together on the bed.
Nova happily let me squish her under me, holding my hand and grinning to herself.
"Good girl," I told her. "Good sister. So good."
"Mmhm," Nova mumbled. "That was... intense. I liked it." She wiggled beneath me. "Bite my neck a little? Make a mark?"
I snorted softly in amusement, but did as she asked. Nova gasped and purred as I bit her. She wanted a mark, to be claimed more than she already was. I could give that to her.
Nova was eventually sated. She was very contented with her brother-filled pussy and the bite-mark on her neck that she examined carefully in her phone camera to make sure it was obvious enough. She was fairly clingy for a while after, and made me hold her close, even while she was checking out her neck and pussy in the aftermath, and flipping her notebook open to continue her scientific explorations.
"All better now?" I teased.
"Yes, actually," Nova said. "I wasn't jealous, just for the record."
"Hehe, it's ok to be," I told her, playing with her hair.
"I might have been possessive, if anything," Nova said. "And horny."
"Definitely horny," Skye laughed. "Damn when you get horny, you really get horny."
"It was pretty hot," Aurora said. She and Skye had switched up positions a little to where Skye was sort of curled up against her, but leaving Aurora lots of room to play with herself.
"I think I like you being possessive," I told Nova, kissing gently where I'd left the mark on her neck.
"Only because the solution was more sex," Nova said.
"Well... yeah, that helped," I agreed. "You know I love you as much as ever, yeah?"
She squirmed happily in my arms. "Yeah, I know."
"You feeling ok with everything?" I insisted.
Nova took a moment to think about it. "Yeah," she finally said. "I am. I want to see you have sex again. See if I have the same feelings. I liked it, but it made me feel some complicated things inside. It was neat, actually. But I really needed to feel that you were mine afterward." She clicked her pen thoughtfully. "I want to experiment with that more."
"Ha, everything's an experiment, huh?" I teased.
"If one is brave enough, sure," Nova agreed seriously. "And... I do want everyone to be happy." She looked at Skye and Aurora.
Skye smiled back. "I'm pretty happy."
Aurora nodded more shyly. "I... want to try it still. It looks like it feels good."
"Of course," Nova said. "Any time. Would you... mind getting some waters for us though?"
Aurora blinked then hopped out of bed. "Oh right, hydration. Good idea."
I sighed to myself watching Aurora scamper away wearing only my shirt and nothing at all underneath. I honestly wasn't sure sometimes whether it was full nudity or the barest pretense of modesty that was hotter, but either way I was seeing plenty these days.
Aurora returned with an armful of bottled water, doling them out to the lot of us. She hopped back into bed while the rest of us drank thirstily. She pulled her knees up to her chest and rested her chin on them, apparently lost in thought. I decided not to point out that her pose left her pretty little pussy peeking out, giving just the smallest glimpse of it between her thighs, where her shirt didn't sit quite low enough in her current pose.
For that matter, I had Skye to check out too, all splayed out nakedly as she was. And Nova in my arms, warm against me, free for me to feel up. I cupped her tit in my hand and she carried on her deep note taking like I wasn't even there.
I'd finished inside Nova and Skye already, filled both pussies with cum, yet I could already tell I was going to get horny again. How could I not, really?
"I need to pee," Nova finally declared, setting her notes aside.
"Yeah, me too," Skye said. "I've been holding that in a while now."
"Well you shouldn't," Nova said. "Not after sex."
"I know," Skye said. "But I didn't want to miss anything. Not like you were going to record it for me."
"Ooh, that's a thought though," Nova mused as the two of them sauntered out of the room together. "That would be better for reviewing afterward. The problem with my notes is it's only what I observe and remember in the moment, and..."
Her voice trailed out of hearing distance, still excitedly yapping about possibilities. The sight of both cute asses swaying out of the doorway was seared into my short-term memory.
Aurora was staring at me all the more piercingly when I looked back her way. The intensity of her gaze actually made me blush a little, despite the fact that shyness and shame were becoming foreign concepts to me.
"Doing ok?" I asked her.
"Yeah," she said. "Do you want to have sex with me?"
I blinked at the sudden transition. "Um... now?"
"Yeah," she said. "I want to try it. Nova and Skye both loved it. I... don't want to do it with them staring though. Seems like too much."
I glanced at the doorway. "They're only going to be a few minutes probably."
"I know," Aurora said, crawling at me lightning-quick while my head was turned. Her hand contacted my cock, rubbing softly and with undisguised interest. "But I think... it's kind of just starting that makes me nervous. I think it would be fine after that." She looked at me with big eyes. "Do you want to try it with me, Sol? Please?"
"Unf, well yeah, I mean I--"
"You want to have sex with your little sis-ter?" Aurora added, batting her eyelashes.
"Fuck's sake," I groaned. "Why'd Nov have to teach you that?"
"You get so hard for things like that," Aurora breathed. "So hard in my hand."
I nodded. "I know. It... it works for me. I'm not saying it doesn't. Just... it's kind of excessive, isn't it?"
"Please big brother?" Aurora continued heedlessly.
I was helpless against her. As helpless as if she was my real sister as much as Nova was. Totally done for by only a few carefully selected words.
I tugged her shirt--my shirt, really--over her head. "On your back," I told her. "Like a good sister."
Aurora complied breathlessly, eyes shining, bottom lip held nervously between her teeth. "Please," she said. "Before they come back. I'm... I'm ready."
I nodded. I felt her need and urgency even beyond her words. It made sense to me, even if privacy wasn't something I particularly got in my sex life and I didn't find it to be so crucial for me. It was for Aurora, at least to start with so she claimed.
"You want your brother in you?" I asked, just to check, just to be sure.
Aurora smiled at the way I phrased the question. "Mmhm! I'll be good. I promise."
I groaned softly and pinned her legs back, hefting them up over my shoulders as I pressed my cock against her soaked pussy. Aurora gasped and squirmed, but did her best to hold still for me, making burning eye contact with me the whole time.
"Yes," she whispered. "Yes. Now. Please."
I sank into her, disappearing into her wet little slit. Aurora made an animalistic whimper, then let her mouth fall open in a happy, gentle pant.
"Oh wow."
"Good?" I asked.
"Mmhm," Aurora said. "It's a lot. But good, yeah. You can... move. Do the... you know."
I tried pulling out and back in a few times.
"Better?" I said.
"Yeah. Yeah good," Aurora murmured. "Thank you." She grinned wider at me. "Big bro-therrr."
I snorted amusement and thrust harder into her. I stayed relatively gentle, but found that she did seem to like it when I got into a quicker rhythm, in and out.
"You... feel good too," I told her.
"Good," Aurora said. "You can cum in me when you want to."
"What's this obsession with skipping right to that," I protested weakly, feeling the thrill of the way she said it with such casual conviction.
"I dunno. Everyone else is doing it," Aurora said.
"Doing what?" I heard Nova ask as she padded back into the room.
"I head something about cumming," Skye said. "Are you... ah! Aurora! Without us, even!"
"Bad friend!" Nova laughed, bouncing back into bed. "Bad girl!"
"I'm nottt," Aurora whined. "Just... it was too much to do it with you both watching. I needed a head start."
"I get it," Skye said. "Nova's so intense."
"Me?" Nova protested. "What about you?"
Despite their squabbling, Nova and Skye took up flanking positions on Aurora, going with tradition to hold her hands on each side. Aurora accepted the gesture, apparently fine now that we were mid-sex already.
"Better cum good in her, Sol," Nova told me. "Now that you've started and all."
"Do my best," I said. "Am I going to need to be ready for you again right after?"
"Hm, maybe I'll let you have a little break first this time," Nova said. "But just remember you're going to need to take care of me good if you want to go about fucking my friends whenever you want."
"Literally all your fault," I told her.
Nova tried an innocent look on for size. "Who, me?"
"Hehe, he's right though," Skye laughed. "You did this."
"I did, didn't I?" Nova admitted. She stared down at where my cock was thrusting in and out of Aurora over and over. "It's kinda sexy, isn't it?"
"Very," Skye said. "I am, in fact, going to take your brother for a lot more rides going forward. Just so you know."
"I know," Nova said. She clicked her tongue thoughtfully. "It really is hot thinking about it. And watching it." She gave me an adoring and needy look. "Tell me how much you love me again? I like when you do."
"I love you so fucking much," I told my sister, meaning it utterly.
She leaned in to make out with me, and I felt the absolute absurdity of expressing such love and desire while I was also balls deep in her friend. I knew Nova needed it right now though, and nothing about the circumstances changed how I felt.
"You mean so much to me," I told Nova. "Nothing's ever going to change that."
We sloppily made out some more.
"Good," she eventually whispered in my ear. "Now... be a good brother and cum in your sis-ter, ok? She's waiting for it. She's being so good. You need to cum in your sister's pussy. I know you like doing that."
"Every... time..." I panted while Nova nipped at my ear and neck.
It worked though. That was what made it hard to complain. Nova told me to cum in my sister's pussy--pretend or real apparently didn't matter that much--and that's all I wanted to do.
"Good boy," Nova urged. "Cum for me. And for her. All your little sisters want you to right now. Do it. Be a good boy."
I whimpered softly and buried myself in Aurora, cumming deep in her. Just like she wanted, just like Nova insisted. I finished the job of making sure all three girls in bed with me had filled up cummy pussies.
Aurora was pretty clingy afterward. All she wanted to do was curl up and cuddle with me, to the point that Nova didn't even bother trying to detach her for a while.
Nova and Skye snuggled up together instead while my sister pored over her notes, occasionally jotting some new piece of information down.
"So we're ahead of projected schedule now," Nova said. "With, I would say, better than expected results."
"I'm proud of Aurora getting in on this," Skye said. "I thought you'd take longer to work up to it."
Aurora shrugged, but didn't otherwise move. "It felt right."
It was just as well I'd finished three times already. Being so casually close and intimate with the three of them while they all remained naked would have had me too horny to function otherwise. As it was, I could just enjoy it. Though admittedly, they worried me the way they talked about some stuff.
"What exactly do you mean by schedule?" I asked.
"I wouldn't worry about it," Skye said with a teasing grin.
"Only a projected timeline," Nova said, fluttering her hand dismissively. "We'd scheduled Skye for losing her virginity today. Aurora was more of a wild card."
"Didn't know for sure ahead of time," Aurora mumbled, then hugged me a little tighter.
I shook my head. "You're all kind of fucked, huh?"
Skye grinned wider. "We are now."
"Not what I... nevermind," I sighed. "Why do I feel like I'm the least involved in any of the planning stages for these schemes of yours?"
"Probably because that's a fair assessment," Nova said seriously, though she crawled over to sneak a kiss with me, which did in fact mollify me a bit. "Would you like to know about our next steps?"
"... there's more?" I said.
"Hopefully lots more," Nova said.
"Hopefully," Aurora echoed sleepily from my chest.
"But problem is our parents are coming back in only two weeks now," Nova said, twirling her pen as she stared intently at her notes. "And that would really put a damper on our experimenting."
"You don't have to just call it that," I said.
"Experimenting?" Nova asked.
"Yeah," I said. "It's not all just experimenting."
"No, it's not," Nova said. "But I think we could probably still sneak in lots of sex and cuddles, if that's what you mean. It's the, you know, group fun, having us all hanging around naked together. That kind of stuff would get very, very limited."
I blinked as I thought about it. "Oh. Oh yeah." I looked down at Aurora in my arms, and at Nova and Skye stretched out nude and cat-like together. "I'd miss that, I think."
"Exactly so," Nova said. "So we started... scheming."
"Started?" I said, arching an eyebrow.
"Kept scheming then," Nova amended smoothly. "We're tentatively thinking about getting our own place." She tapped her notebook with the edge of her pen. "I've looked into pricing and the size of rentals available. It's doable."
"Oh really?" I said. "Should I be worried about waking up somewhere brand new one morning?"
"No, silly," Nova said. "We would all have serious talks about it before committing. There's so much to figure out first too. Like ideally we'd have a lot more time to see how we all feel before taking a big step, but as I say we're on a bit of a clock before a lot of the fun gets shut down."
I slowly rubbed Aurora's back, up and down. "How much of this was planned before you ever seduced me?" I asked.
Nova pouted at me. "I did not seduce you."
"You did."
"Didn't! That was never the plan. Well... until it was, I guess." Nova chewed her lip. "I don't know, things changed. A lot. I like how they went, though."
"Yeah, me too," I said, earning another kiss from my sister. "Love you."
"Love you too," she replied easily. "And... I don't want to have to be super subtle about it all the time. So new place, I think. Though there'd be a lot of logistics to work out. And it might be a disaster."
"When has that possibility ever stopped us?" I asked.
"Well exactly," Nova said. "You get it."
****
We hung out the rest of the day together after finally leaving the bedroom again. I was heavily discouraged from wearing clothes at any point, and the girls either stayed nude as well, or else wore one of my shirts and nothing else.
I had a constant reminder all day that all three of them were cum-filled. Even when they weren't deliberately mentioning it or flashing me directly, there was pretty consistently one or more pretty, bare pussies on display one way or another.
If I was sitting down at all, I nearly always had one of them in my lap. Aurora more often than not, in fact. She was still clingy, and didn't seem to mind making it obvious.
Nova and Skye distracted each other plenty with planning and scheming. There were many details to be worked out, but it became clearer and firmer that we were all at least going to try moving in together. Somewhere with a modicum of continued privacy from the outside world, even if it wouldn't be as nice as having the full run of our parents' place while they were on vacation.
I half-listened to the details while spending much of my time cuddling and feeling up whichever girl was currently in my lap. Nova mostly ignored me as long as I didn't interfere with her notes or try to peek at them. Skye actively encouraged me. Aurora played a more teasing game of making me work for it. She'd let me slip my hands up her shirt, but only if I moved slow, and sometimes she'd slap my wrist away for no reason at all that I could fathom. Then at other times, I could be fully cupping her tits or knuckle-deep in her messy pussy and she'd only moan in soft and contented fashion.
It all kept me amused anyway, and quite aroused despite all the previous cumming. Nova eventually climbed on my cock when she judged the time right and rode me to an unhurried orgasm for both of us. Doubling up on the cum inside her and making her feel better about sharing me.
"I still kind of like when you're a bit jealous," I said.
"Possessive," Nova corrected once again. "I'm a bit possessive sometimes. I think that will fade with time. We'll keep an eye on it."
Despite her claims, she monopolized my lap for a while after that, including lying her head on my shoulder and just happily relaxing against me for quite some time.
We all went to bed together that night. Pretty well what I expected by then. It was cozy, but harder to actually sleep with three other bodies around all shifting and making small noises.
I wasn't surprised about sleeping together, but I hadn't quite expected how much Skye and Aurora would stick around afterward. They didn't quite move in as such, but if they went home it was only temporary, and often just to pick up some more clothes or supplies.
It took me a few days to actually ask about Skye and Aurora staying over so much. I didn't want to jinx it at first, since I really liked having them around. It was a bit much always being outnumbered, but it almost universally worked out for me in all the best ways.
"It's important to make sure we can cohabitate nicely," Nova told me. "No point going through all the trouble of moving in somewhere and then finding out we can't stand living together."
"Always two steps ahead, aren't you?" I said.
Nova grinned enigmatically. "You know I like my research."
"Ha, yeah, I know."
"Speaking of which..." Her fingers tickled down my front, brushing tenderly along my cock.
"Is that what we're calling it now?" I teased. "Research?"
"It's always been research," Nova said as she wrapped her hand around me. "Just... it can be other things too."
My sister was, perhaps, the most insatiable of any of us. Always finding the slightest excuse to fuck some more, or otherwise try out various sexy activities. It was some combination of horniness, possessiveness, jealousy, love, and a genuine desire of hers to try new positions, techniques, or kinks.
It wasn't really a fair contest. I didn't have the same opportunity to truly develop urges. Having all three girls around saw to that. The huge upside was that I always had someone to have fun with when I wanted.
Interestingly, once the initial novelty wore off, Skye and Aurora didn't demand as much of my sexual energy as I expected. Skye still wanted to get off regularly, one way or another, but not with the same dedicated enthusiasm that Nova showed.
Aurora became more of a cuddle-slut than anything, monopolizing me far more often with her head nestled cozily against me rather than with my cock inside her. Her need for snuggles got even stronger after being intimate in some way, however.
The truly rare thing in my life right now was privacy. I'd only just barely gotten balls deep in my sister when Skye flounced in, sprawling out next to us with a dramatic sigh.
"Picking up these extra shifts at work is getting to be a drag," Skye complained. "I got next, by the way."
Nova giggled. "Fair. We only just started though."
Skye shrugged. "That's fine. Gives me time to unwind first anyway."
Skye lazily watched beside us as Nova and I fucked. She slowly unwrapped herself from her clothes, getting naked and wet in preparation.
I could have sworn sometimes that Nova actually preferred an audience. She got more into it, digging her nails in and biting at my shoulder, whispering filthy things to me, rocking her hips back more aggressively against me. It was either the thrill of being watched, or jealously making sure to leave her mark on me before her friend got a turn. Probably some of both, really.
"I suppose I'm just a performing sex toy for you all now, huh?" I said, making sure to bottom out a little harder inside Nova's sweet pussy.
"Unf, no of course not," Nova purred. "You're our big brother." Her fingers scratched lightly at the back of my neck. "You need to take care of your little sisters, that's all."
"Hehe, that's right," Skye said. "You got 'sponsibilities toward us. Brotherly duties and all."
"You two are fucked," I said.
"With any luck," Skye agreed.
Nova grinned and kept teasing and encouraging me until I came in her, pumping her pussy full of cum.
Aurora padded in just about in time to watch Nova get filled up. She was entirely nonchalant about witnessing the sibling creampie in progress. It had become a regular occurrence, along with the aforementioned lack of any kind of privacy between us. She was, too, wearing one of my shirts and little else, as was her wont these days.
"I already got next," Skye warned as Aurora made herself comfortable too.
"Of course you do," Aurora sighed.
"Aw, are you horny too?" Nova asked, sliding her hand over her pussy as I pulled out, leaving her messy with my cum.
"Nah," Aurora said. "But I was feeling lonely."
"Want to cuddle while Sol and Skye fuck?" Nova offered.
Aurora squirmed awkwardly and shook her head.
Nova poked her teasingly. "Want your big brother?"
Aurora shyly nodded.
"Don't worry," Skye said. "I'll be quick. Then you can have him."
"You'll make a boy feel cheap passing him around like that," I said.
Skye rolled her eyes and stuck my cock in her mouth, ignoring the mixed flavours of me and my sister and purposefully bringing me back to life.
"I don't think she's worried about that," Nova supplied helpfully.
She had cuddled up with Aurora anyway, and already had her notes back out. She was still obsessed with keeping records, but I was noticing that over time the actual quantity of writing was dropping pretty hard. I was tempted to suspect that my sister was settling in to having everything she wanted, and didn't have nearly so much need to experiment. At least day to day. I knew we'd keep finding new and interesting things to try out.
Skye rode me hard until we both came. Nova and Aurora cozily watching and chatting the whole time, both amused as Skye got off my dick and spilled some of the mess upon her dismount. She was very quick to lick up the stray cum off me though.
Nova and Skye both pattered off after, naked and satisfied, while Aurora happily glommed on to me for some cuddle time.
"I really like having you for a brother now," Aurora told me softly.
"I'd been getting that impression," I said.
"That's ok, isn't it?" she asked. "We could have sex more if you wanted..."
"Haha, no, I'm getting lots," I assured her. "And... I really like having you as a sister too."
Aurora smiled broadly and blushed profusely all at the same time. After a few minutes she started toying with my cock. Really just playing with it, not for any specific goal.
"It's just fun," she said in response to my questioning grunt. "I like when it's soft and then... gets hard. It's neat."
She wasn't wrong, exactly, but it was kind of fascinating to know her well enough to understand that she truly didn't have sexual goals in mind beyond just snuggling and playing with my cock for her own amusement.
Aurora was still messing around with me when my phone rang. The fact that it was my mom didn't slow Aurora down at all. She seemed even more amused to play with me while I picked up the call from my mother.
"Hi, baby boy," Mom said.
"Hey Mom," I said. "How's it going?"
"Good! Really good."
She launched into a spiel about what her and dad had been up to lately. I half-listened while glaring warningly at Aurora, who naturally ignored my cautions entirely and continued teasing me to her heart's content.
"Anyway," Mom said, "I did have a point in mind."
"Yes?" I said.
"You know how we're scheduled to be back home soon?"
I nodded and composed myself before answering affirmatively. I was really going to miss the freedom we'd had of the house lately. The girls were a handful, but I loved them and all the mischief we got up to. It was going to be a bummer having that disappear, even if we did have adequate plans coming together eventually.
"Well... would you and Nova be terribly upset if we didn't come back right away?" Mom asked.
I blinked in temporary confusion. "What?"
"It's only... your father and I have been having such a wonderful time, and his boss actually okayed him to work remotely, and I have a little more vacation I can burn, and then..."
I listened to Mom explaining herself while a slow, all-consuming grin spread across my face. She thought Nova and I would be upset? Yes, we'd miss our parents, but this was perfect actually.
"... and you and Nova can take care of yourselves, I know you can," Mom said. "I just don't know when we'd get another chance like this."
"Mom, Mom, it's good. It's really ok," I said. "I wasn't expecting it, but yeah, of course stay longer if you have the chance. We'll be fine."
"Thank you," Mom said. "I was sure you'd be ok with it, but I do worry sometimes. You and your sister are getting along ok? Keeping out of trouble? She's mentioned having friends over lately, they're not in your space too much are they?"
I looked down at Aurora, felt her warmth against me, her hand on me, observed that cute look of concentration on her face. I thought of how it felt to be deep inside my sister, cumming in her every day, often more than once. I thought of the rampant nudity, and the recently extinct concept of ever having to sleep alone.
"We're managing somehow," I assured our mother.
"I was sure you would be. You take care of each other, ok?"
"Yeah Mom. Nova and I'll take care of each other."
Aurora was shaking with laughter by the time I hung up the phone. "I only heard your half of that," she said. "You were being bad."
"Wasn't," I said.
"Taking care of your sis-ter?" Aurora challenged. "You didn't elaborate on that, I noticed."
"Yeah, well, I didn't mention I have multiple sisters to manage now either."
Aurora shrieked as I ran my fingernails up her side. We tickle fought for a few moments before she rolled away from me panting.
"So... we have more time now?" she asked.
"We do," I said. "Want to come tell Nov and Skye with me?"
Aurora nodded enthusiastically, making sure to hold my hand tight as we made our way to find the others.
We didn't quite get the chance to reveal our newest granted boon. Nova was already on the phone with our mother, and from what I overheard the surprise had already been revealed.
It was a bit of a naughty situation, the girls being naked while Nova casually talked with Mom and assured her that everything was fine at home. It got even lewder when I bent my sister over and stuck my dick in her while she was conversing.
Nova did her best to carry on as normal while getting fucked by her brother. Her friends were no help, as they spent all their energy repressing giggles at her predicament.
"No, Mom, Sol and I are really getting along," Nova said while I was balls deep in her. "You'd be surprised how well we're living together, I think."
Understatement, that.
"Skye and Aurora have been hanging around too," Nova said. "No, Sol's not bothered about all the feminine energy. Want him to tell you so? He's in the middle of something I think, but he could..."
Nova whimpered softly and had to hold the phone away from her mouth for a second as I rubbed her clit while thrusting into her wet pussy. She glared at me for a second before finishing up the call as quickly as she could.
"That was... so bad!" Nova said.
"Sorry," I said.
"You're not," she said. "But... that was hot. Unf. Someone remind me we need to try that again. I need to write that down." Nova stared intently at me over her shoulder. "Now make me cum. You owe me."
It was a fair point. I did owe her. And I wanted to anyway.
"Anything for my sis-ter," I told Nova seriously. "Be a good girl and cum for me, ok?"
It took a bit longer to get her off, but only a bit. She was pretty wound from the phone call already. I'd actually only meant to have some fun with the situation, on a whim as much as anything, but it had genuinely been pretty hot for both of us.
I came inside her again too, of course. I wasn't going to skip out on that.
We held each other afterward, aware of Skye and Aurora spectating, but not really minding at all.
Aurora, however, was visibly vibrating with excitement and could only restrain herself for so long. "So... we're staying here for a while, right?" she asked. "We don't have to find some stupid apartment for way too much rent?"
"Of course we are," Skye said, snaking her way in to the hug Nova and I had been sharing. "Big brother needs all his sis-ters around, and we need our space."
"Hehe, good," Aurora said, joining the mostly-nude group hug.
"Who says I even want you all sticking around?" I asked.
I grinned as I got booed loudly, then gasped as I got nipped at from various sides all at once. Usually only Nova bit me, but it seemed to be spreading in this case.
"Of course we're all staying here for a while," Nova said. "It solves all our problems, at least temporarily. It gives us more time to work out how we cohabitate together. It's cheap and gives us space as Skye said. And privacy from anyone overhearing the, uh, incestuous remarks flying around."
"I love that you think that's more worrisome than the actual incest," Skye teased. "Anyway, this is good, 'cause I didn't really want to go back to living full-time with my family until we had a place sorted out."
"Yeah, me either," Aurora said. She poked me urgently in the shoulder. "Anyway, it's still my cuddle time. We got interrupted."
Nova somewhat grudgingly allowed it. "We were working on food before we got distracted," she said. "I guess we should get back to that."
"I'm still hungry," Skye agreed.
I got to watch Nova and Skye figure out some snacks while Aurora and I cuddled some more. It turned into group cuddles a little later on, and even though it was quite disorganized, it was really quite affectionate and loving.
It was kind of amazing to think this had all come about from Nova's 'scientific endeavours,' but I loved that she was crazy enough to make stuff like this happen. She was probably the best little sister I could have ever had, and thanks to her I had a couple more pretty cool sisters too.
I kissed Nova's cheek, and she turned to look at me questioningly. I could tell she was confused about the gesture, but happy with it too.
"Love you," I told her quietly, just in her ear, just for her.
"Ha, silly," Nova said. She rested her head on my shoulder. "Love you too. You're the best brother." She laid her hand over her pussy. "You make me feel so good."
I held her close, feeling the subtle shifting as Skye and Aurora snuggled in tighter as well. I loved them too I realized. It was different, but it was there. My sisters. My precious little sisters.