My Sister's Secret

Story by Jessi Snow on SoFurry

, , , , , , , , , , , , ,

Biological sisters, Nell and Maye finally share a family secret and create one of their own.


“Please? Just let me see it!" Maye complains, tugging on her sister's skirt, “I've never seen it before… just a peek!"

“No," replies Nell, “You're too immature, just knock it off."

Maye crosses her arms over her already well-developed bust, “I'm not immature, I'm eighteen. You promised that one day you'd show me your biggest secret, so show me! Show me the secret!"

“I don't know if I should, Maye! Okay? Mom and Dad made it clear that… this kind of thing… really ought to be kept to myself," Nell sighs, “Besides, just because you're eighteen… it doesn't mean you're not immature."

“I'm not! Come on!" Maye says, pouting loudly, shaking her fists at her sides, “Come on, come on!"

“Not immature, huh?" Nell smiles, watching her sister's early signs of a tantrum, “You haven't even grown out of tantrums. Only children do that."

“Ugh! Just… show me already! I'll sit on you!"

“No… come on! You never let up when you do that!" Nell says angrily, protesting her sister's tantrum. “Is that what you'll do when you have a husband someday?! If you don't get your way, threaten to sit on him?"

“Right on his chest so he can't get up!"

“That's so childish…"

“Just… please? I'll do anything!"

Nell sighs, “Anything?"

Maye nods, holding her fists to her chest, “Yes… please! I want to know the secret. It's been bugging me!"

“Okay, fine. The first thing you can do is..."

Maye's eyes widen in anticipation, “Yes?! Yes?!"

“Stop asking," Nell says, smirking as she turns her back to her little sister, “Now please… just get out of my room, okay?"

“Nelly… come on," Maye's voice sounding much more disappointed and defeated, “Fine… just… Dad knows… Mom knows, and you know… I'm always left out of everything." “Maye…"

“Whatever," Maye sighs, turning to Nell's bedroom door to leave, “I'm just tired of being the youngest. I'm an adult now, I guess I should just drop it. You were always the special one anyway. Guess it's best I leave it be."

“Maybe, it's not that we don't want you to know things that we do, it's…"

Maye interrupts her sister, “I'll see ya. I have some studying to do."

“Maye…" Nell holds her right fist to her chest, sighing as her sister leaves the room, her red curls following her. She sits down at her desk and spins her chair to face the mirror above it. She inspects her own dark brown hair and runs her fingers through it. Some of her bangs droop in front of her green eyes, and as she looks at her own eyes, she sees the very same shade as she would when looking her sister in the eye.

We have so much in common… from our eye color to our love of writing and singing… even the college we both want to go to. Our favorite foods, our favorite toys when we were children... it's like we're twins, but we're not. Knowing this secret… she would know why I was always the 'special one' and she'd only feel less important.

Nell looks down at her desk and sees her diary, locked and neatly laying on a couple of notebooks. She's always been such an honest sister. Even my diary, right here. She would know my secret if she just picked the lock and turned a few pages, but all these years, she waited to hear it from me. She's my sister… we love each other and always will. Why am I so worried about telling her? Nell sighs, knowing that if she does tell her sister, the worst that could happen is she loses her lifelong best friend. Though, if she knows Maye well enough, she knows that no matter what, thick and thin, sisters will stick together, so will this one secret chase away her little sister?

Deciding that sitting there and sulking, feeling guilty for her sister's disappointment isn't going to make the matter any better, Nell decides that maybe now is the time. It's time to tell her the secret she'd hidden for years.

Maye groans, laying in her bed with her right arm over her eyes and her calculus book, opened and face down on her stomach. Her mind is busy with questions on top of stress from her homework needing to be done. How could she focus on schoolwork right now, anyway? If Nell wasn't so stubborn… she should know she can trust me by now! Maybe it's a favoritism thing. Nell was always seen as more of a priority. I can't ask Mom or Dad since they're away for a few weeks, so I'm just stuck here, wondering forever. Maybe I really am being immature about it.

Maye sits up and allows her book to fall off her stomach and onto her bed, her long, red curls tumbling lightly around her shoulders. She stretches and sighs, slowly standing up and walking to her desk. Shuffling through her many papers, she sits down in her chair and picks up a pencil, immediately starting to tap the eraser on the surface. Before she gets too comfortable, Maye is slightly startled by the slow rapping on her door.

“Not now, Nell…" Maye calls at the door, her back still turned to it.

“Please? Maye, let me in."

“I have a lot of homework to do," Maye excuses, sitting back in her chair with her hands in her lap; she has no real intention of studying, especially on a Friday night, “It's… a lot of calculus. You know Mr. Taylor's strict about this stuff."

“It'll only be a minute," Nell says, opening Maye's door slightly, “Just… I didn't want you to feel like maybe… you weren't ever important."

Maye spins around in her office chair to face her sister, “I know I'm important! I just… growing up, it seemed like you were the favorite. I know it might not be that big a deal but… the whole family knows this huge secret and I don't know anything!"

“W-well… you're about to," Nell says, taking a deep breath in and entering her sister's room completely. She closes the door, even though they are the only two home for quite a while, and she sits on Maye's bed, her head down and her hands on her knees. “Maye…"

Maye's heart leaps in her chest as she leans forward, paying close attention to her big sister, “Yes?! What is it? You're really letting me!?"

“Maye… I'm… not who you think I've always been."

“What are you talking about?"

Nell draws in a deep breath, releasing it slowly, “Maye… um… you know your friend at school… the one who draws those… strange comics about girls with… um…"

“Oh… Demetri? Yeah, he draws porn comics about women who have… male parts. They still have their female parts, too, just, you know," Maye tilts her head a bit, “Why? What's Demetri have to do with this?"

“Well… those types of comics… well, the people in them… those kinds of people really do exist."

“They do? He calls them Futanari. You're saying that Futanari exist?" Maye raises a brow. “Why… are you telling me this?"

“Well… uh… thing is, Maye… I'm…" Nell looks down a bit more, bringing her fists to her chest shyly, “I'm one of… those…"

“One of… you mean…" Maye's voice slowly silences to a dull whisper, “You're… one of them? Th-this whole time? I mean… all these years… f-forever?"

Nell blushes, keeping her head down, avoiding her sister's gaze, “Yes… I'm… a real futanari. Well… I guess the real term is… hermaphrodite but… b-but I'm not a man!" Nell looks up at her sister, “I'm not a man, I promise! I'm still a girl! I have boobs, a vagina, all the girl stuff!" She lowers her head again, her hands pressed together, held between her knees like a shy child, “I just… have… a penis, too."

Maye stares in silence as her older sister shies away. So many thoughts rush through her mind, and for a moment, she feels her stomach tie up in knots. She isn't disgusted, but rather shocked to learn that her older sister is a real-life futanari. She stares, her posture straight and her fists on her knees, looking almost afraid, but more so, attentive.

“Maye… Maye, say something!" Nell panics, hunching over slightly in shame, “Anything… d-do you hate me? Why are you being so quiet? M-Maye! Just… say some…"

“Show me," Maye interrupts, her eyes still rather wide and her cheeks a bit pink, her posture still straight and motionless. “Show me… I… want to see."

“What? Show you my…"

“Your dick. If you really have one."

“Maye… don't say it like that…"

Maye's straight-face slowly curls into a small grin, “Unless… you don't really have one."

“Why would I lie about being a freak!?"

“Could just be trying to get me to feel bad for ya…" Nell scowls at her sister.

How dare she!? Do I really have to show her?! It's embarrassing enough that I've finally admitted it! “Ugh… f-fine… but… don't let Mom and Dad know that I told you… or even showed you, got it?"

“Yeah, yeah."

“Promise?!" Nell scowls, clutching her skirt over her knees, “Promise me!"

“I promise, sheesh! Come on… is it true!?"

Nell takes a deep breath and slowly lifts her skirt over her knees, and soon, a bit passed her thighs. Maye watches in anticipation as her sister lifts her skirt higher and higher until it's over her belly. She can see Nell's panties – a cute, soft lavender shade of panty with a small white bow at the top of the waistband. Just between her thighs is a bit of a bulge, nothing immaculate, but quite obvious.

“Is… that it?" Maye tilts her head, getting off her chair and getting closer to her sister, dropping to her knees to get a closer look. “D-don't get so close to it!" Nell squeals, embarrassed, “But… yeah…it's… that's it."

“Take it out, then."

“What?!"

“You said I could see," Maye says, looking up at her sister, “Let me just…" Maye reaches up for her sister's panties, slowly inching them down under her belly, watching in awe as her sister's flaccid penis is inches away from her face. “H-holy cow… it's… real."

“I told you! Happy now?" Nell shivers, moving to lower her skirt over her unsightly cock. Maye stops her from moving her skirt back, unable to take her eyes off of it. “Maye… th-that's enough now…" Nell gulps, turning away a bit in order to stand up.

“Wait! Come on… all these years and… that's all you'll show me!? Besides, it's… so interesting," Maye says, “Wow." “You mean… you're not disgusted or embarrassed of me?" Nell asks a bit surprised, “Huh… I was pretty worried, actually, that maybe you'd be—aagh! Aaghnn! W-what are you…"

Maye gently pokes at her sister's cock, watching it twitch in its flaccid state, “You said you still have a vagina, right? Where is it?"

Nell shivers a bit, “I-it's… under the… testicles."

“Woah! No way!" Maye doesn't hesitate to lift her sister's testicles out of the way, revealing a hairless, smooth, rather tight-looking vagina.

“C-carful! You're squeezing!" Nell blushes, turning her face away from her sister. She feels her cheeks turning hot and soon, they're as red as Maye's hair when she notices that her cock is a bit less flaccid than a moment ago, “Oh no… no, no…"

“What?" Maye looks up from inspecting her sister's slit and lifts her head to meet Nell's eyes. She looks down at Nell's cock again, seeing that it's beginning to harden. “Oh… ah, woops. Is it because I'm touching your balls?"

“Well, actually, yes…" Nell lowers her skirt a bit as she stands, covering the tip of her dick, “There… you had your look, okay? I'm gonna go now, you should study."

Maye pushes Nell back onto the bed and blushes, “We're sisters… we should be sharing. If it's my secret now, too… should I also make it my dick?"

“What are you talking about!?" Nell groans, starting to panic, “It's attached to me, what do you mean make it your dick?!"

“I… I mean..." Maye bites her lip, sitting up taller on her knees as she lifts her sister's skirt back up, “I mean… something inside of me wants to prove that I accept it, you know?"

“W-words are enough, Maye, really!" Nell panics, watching in shock as her sister starts to gently massage her shaft, sending shivers up her spine. “M-Maye… aagh… n-no… you ca-can't…"

“I love you, Nell… you're my sister. If I can prove that I love you and accept you as you are in any way possible… I'm going to try."

“Maye…" Nell quivers, watching her sister slide her fist up and down her slowly hardening shaft, “Maye, it's getting harder… you should stop." Is it bad that I don't… want her to stop? I've always stroked it on my own but… never had anyone else do it.

Maye watches her sister's cock slowly grow before her eyes. As she strokes a bit harder, she watches Nell's balls rise and fall over her pussy, landing with a very soft plop over and over, her sack getting dampened by her aroused entrance. As she watches closely, she notices her breathing is quickening and shallowed. Her thighs begin to twitch a bit, almost as if she had an urge to part them. Listening to her sister's moans, Maye begins to stroke faster, watching Nell blush and tense up.

Nell holds her left fist to her chest as her knees shake, “We shouldn't… be doing this!" she moans, her eyes half-closing as her breathing intensifies. “If… you do that too much I'll…"

“You'll cum?" Maye smiles endearingly, “I told you… I'll do anything to prove that I accept you. Let me prove it, Nell."

Maye nods, leaning forward and bringing Nell's cock to her lips, slowly taking her sister's dick inside, allowing it to glide over her tongue as she moans softly, as if satisfied. Closing her eyes, she begins to lick and suckle softly, bobbing her head up and down along her sister's length.

“M-Maye…d-don't… mmgh…" Nell eases her tension, relaxing a bit more on her sister's bed. “I… can't believe you're sucking my… my cock!"

“Mmgh… mmgh-hmm," Maye moans, sucking a bit faster on her sister's erect cock. She can feel it stiffening, lengthening in her mouth as she soon attempts to take it in her throat. She jerks her head downward, slamming her sister's cock in the back of her throat.

“G-gaagh!" Nell moans, “S-so intense… you're deep-throating me?! Aagh, G-God…I… y-yes…"

That's it, Sis… just let me take care of you. I love you, Nelly, you're my best friend and the only sister I have. I know you'd probably do the very same for me.

Maye slowly begins to unbutton her shirt as her head bobs up and down Nell's cock, allowing her braless breasts to gently sway. She lifts her large, plush breasts to her sister's cock and wraps them around Nell's shaft, stroking her cock firmly as she sucks closer to the tip, licking and gently popping it in and out of her mouth.

Nell moans in pleasure as her sister's breasts envelop her throbbing, hot member. She does her best to watch through closing eyes as her sister's vibrant red head bobs up and down, her breasts following suit. She breathes harder, feeling her stomach tighten and her pussy dampen beneath her sack.

“Nngh… M-Maye…I'm… I'm gonna…" Nell groans, gripping the bed sheets as she slowly begins to thrust upward into Maye's throat, “I'm g-gonna cum!" Maye continues anyway, allowing her sister's seed to flow into her mouth. Her eyes widen in surprise as she tastes the saltiness of Nell's semen coat her tongue and rush down her throat. She pulls her head up and away from her sister's cock, leaving a trail of saliva connecting them.

She licks the right corner of her mouth as she looks to her big sister, panting and blushing just as she was. She gulps, biting her lip a bit as the two sit in an awkward silence, staring at each other. Nell observes her little sister, a grown woman of eighteen years who wears this strange expression of inexperience on her face. Her actions proved otherwise, but she can't shake the feeling that Maye was hiding something.

“Maye… w-where did… you learn how…to..."

“I watched… some videos on the internet… um," Maye blushes. “I don't have a boyfriend or anything… so this… was kind of my first time with… a real dick."

“Wait, so you're still a virgin, too?" Nell blushes even harder, “Even though you took my cock like that?!"

“Well… yes. Listen!" Maye says, shaking her head a bit in order to try and snap out of her shyness, “I… want to practice. And… since you have a cock and…"

“No! No way!" Nell panics again, her still-hard cock swaying lightly with her movements, “It's bad enough you sucked me off! That's one secret already from Mom and Dad! Can we really afford another one!?"

“They had two daughters, didn't they? They know there's bound to be some secrets. Come on, Nell! Nelly… I trust you! I'd rather my sister take my virginity than some guy who might not stay with me forever!" Maye leans toward her sister, slowly getting off her knees and climbing over her. Her slit is wet from the feel of her sister's cock in her throat, and looking down at Nell, she made it very clear that she wanted that cock somewhere else, as well.

“Maye…" Nell gasps softly as her younger sister mounts over her cock, her panties softly pressed against it, “God… you're soaked!"

“S-so… fix it… please?" Maye's voice becomes wispy and hot, “Do you need to be more excited?" Maye reaches down and grabs Nell's hands, lifting them to her breasts and allowing her sister to grope and feel them, “Does… this help?"

“God… I…" I never thought this would happen… but I like her being on top of me. I love feeling her on my dick! Her breasts… they're so big and firm, but soft at the same time, I can't describe it. She sucked my cock. I already know I can't get her pregnant with my semen… and… “I think… you're right. It's better if I… do it first. We've always had a special bond, and… you'd be my first, too."

“Nell, really?"

“Of course! What, you think some guy out there is gonna want to have sex with me? We'd fight over whose dick was bigger!"

Maye laughs a bit, squealing in excitement as she leans down, pressing her chest against her sister's and hugging her tightly as she wiggles her hips, further stimulating her sister's cock. She sits back up and smiles, looking deeply into Nell's lovely green eyes. Nell looks back into Maye's equally-green eyes and blushes, her eyes widening as Maye leans further down, their noses barely touching. Before much longer, Maye takes the plunge, kissing her sister on the lips, her eyes closed and her fingers interlocking with Nell's, lightly pinning Nell to the bed.

Nell moans in the kiss as her heart races along with her thoughts: What if their parents find out? What if it slips? What if they like it too much? What if they're addicted? What if Maye can get pregnant? What if… what if… what if. Soon, those thoughts are chased away when Nell feels Maye lift herself upward, her hand moving her panties out of the way, revealing her smooth, virgin pussy. She is lowered down to Nell's cock, slowly being eased inside.

“Aagh… s-so warm… mm-mmgh!" Nell quivers, fighting the urge to thrust upward, “Easy, Maye… don't hurt yourself… if you don't want to keep going, we don't have to."

“I… want to. More than anything." Maye breathes harder as she lowers herself down onto her sister's thick, tall cock. She feels it pressing hard inside her, slowly tearing her hymen. With winces and whimpers of pain, she clenches her jaw and takes a deep breath, slamming herself down, meeting her hips with Nell's. The girls squeal in shock and a small bit of pain together as Maye's virgin blood slowly oozes toward Nell's balls. Maye begins to lift and lower herself on Nell's cock, slowly gaining a feel for a member this large inside of her.

Only before has she used toys that weren't nearly as large as Nell's penis, so allowing her pussy to take her sister's shape was easier said than done, but with patience and slow movement, the sisters managed to make it work, and soon, Nell was able to thrust slowly – and with ease – in and out of her sister's tight, virgin pussy.

“God… Maye… you're so tight!" Nell moans, breathing in a steady rhythm as she thrusts upward each time Maye lowers herself.

“L-loosen me up, then," Maye smirks, blushing as she closes her eyes, tilting her head back, riding her sister's cock a bit faster. “Aagh, it's… s-so good… it feels so good, Nell. I'm so… h-happy you told me!"

“F-fuck… Maye…" Nell groans in pleasure as she grabs her sister's hips, thrusting upward over and over, filling her younger sister with her entire length. The girls moan in complete bliss as the sounds of their lovemaking fills the room. Maye's moans of praise and begging make Nell only more aroused, forcing her to give into her urges.

“Yes… fuck me!" Maye moans loudly as Nell thrusts faster and faster, slamming her hips against Maye's harder as the girls pant and moan. Looking up at Maye's chest bouncing before her, she can't help but sit up, starting to suckle and lick at her sister's nipples.

“Aagh, yes! Nell! Mmgh! Yeah… ha-harder! F-fuck yes!" Nell sucks harder on Maye's nipple as she slides her hands from her sister's hips to the small of her back, holding her close and thrusting upward into her. Soon, the urge becomes far too strong. She stands, still inside Maye, turning and laying Maye on the bed, thrusting inside her as hard as she can. Maye screams in pleasure beneath her, her eyes starting to roll upward as her mouth opens.

“I… I-agh! Aagh! Mmgh! N-Ne-e-ell!" Maye groans, moaning incoherent sounds of ecstasy up at her sister who savagely fucks her. Nell digs her nails into Maye's bed and grips on for dear life as she thrusts faster, moaning and panting, her mind rushing and her cock throbbing while her pussy drips in pure arousal. She feels her tongue resting over her bottom lip, hanging out very slightly in an attempt to gasp for more air, unable to slow her thrusting. She slams her hips over and over into Maye's as her cock claims the tiny pussy, slamming her balls into her sister's ass. Maye can feel Nell's cock in her stomach, slamming hard against her cervix.

Any harder and she'll fuck me right in my womb!

Her G-Spot is grazed over and over, driving her over the top. Soon, she can't hold back. She arches her back and grips her sister's wrists, lifting her rear off the sheets and squealing in pure pleasure. Nell's cock throbs madly, twitching and tingling inside her sister's pussy.

“Fuck… I'm close… I'm… mmgh I'm… cumming… i-inside! I…aa-aagh!" Nell groans, filling her sister with her hot, sticky seed. With a few more thrusts, she empties herself into Maye's former-virgin slit which grips her cock tightly, refusing to let it go. The overwhelming sensation is enough to force her clit to throb intensely, making her cum from her pussy just as well.

“I'm… cumming! Nell! Nell, I'm cum-mm-mming-ng-ng!" Her pussy forces Nell's cock out and away as a rush of Nell's cum and her own juices burst all over her sister's groin, belly, and thighs. The feel and sight of Maye's orgasm forces one last, small orgasm out of Nell. Her cock twitches upward, rather harshly, and with a loud moan of relief and desire, Nell sprays a hot stream of cum onto Maye; the stream lands cleanly on Maye's soft, large breasts and slightly curvy belly.

The sisters lay side-by-side, panting, covered in each other's fluids, holding hands in the empty space between them. Nell's blouse is askew and beginning to come undone while her skirt is flopped upward on her belly and her penis is flaccid, resting on her thigh. Her panties rest over one ankle, and Nell can't be bothered to sit up to fix that at the moment.

Maye's blouse is wide open, displaying a small lake of cum all over herself like a trophy. Her skirt is askew and her panties are soaked with cum and juices – she, too, doesn't mind the mess. She turns her head to her sister, smiling through a mess of red hair.

“That really… happened," Maye pants.

“You're telling me," Nell grins, looking to her right, observing her younger sister's smile.

“And… no telling anyone, right? I won't if you won't?"

“Of course, you can trust me. I can trust you. I have since we were little," Maye says, her voice growing a bit quieter. She sounds content, tired, and happy.

“I love you, Maye. No matter what happens, you'll always be my little sister, you know that, right?" Nell reaches over, shakily, moving Maye's hair from her face.

“I love you too, Nelly. Forever and a day."

“Hm," Nell softly chuckles, “Forever and two days." “Three!" Maye giggles weakly, closing her eyes, a smile on her face.

Nell closes her eyes as well, sighing in relief as she feels Maye's hand loosen up on top of hers. “Forever and three days, Sis."