[Features: Femboy, Furry, incest, anal, femdom]

In a small town, in a house off by the side, existed a small family. This small family was made up of deer anthro’s, a not uncommon race and sub-species of anthromorphia in general. For this land was far from earth we all know today.

This house and family were slightly unusual though. The mother and father lived with their adult children, but they had long gone away on a business trip, not expected to return for many years. As for the sister and brother, they both held secrets of their own. Peering into the room, the brother was engaged in something… unique in a way.

For starters, for young Ruby, not one person would mistake them for a man, unless they saw what they wore now, which was precious little. Feminine from top down, since the day they were born, they looked even more female than their sister did. Their fur went up and down their whole body, going from reddish brown, to a more orange color for a moment, to finally a pure white from their mouth all the way to their inner thigh. To add a bit of ‘insult to injury’, the patterns on their shoulders and legs naturally formed into what looked like valentine hearts. Lithe figure, cute black button like nose, and beautiful purple eyes, they were doomed to be mistaken for a female from the moment they entered the world. The short red hair, long deer like ears, and antlers merely completed the picture.

Currently, Ruby was staring at themself in a mirror… wearing nothing but lingerie.

Their sister’s lingerie.

Ruby was admiring themself, smiling, getting a little hot under the color. All through growing up, he’s been called or straight up mistaken for a female. The secret was… he didn’t hate that. Not at all. When he was younger he found it funny. Amusing. As he grew older, he strangely found it cute. And then finally, as he’d grown into an adult, he’d started to find it… hot. So, so hot. He’d never really wore much girly clothing but… he wanted to try. And he knew his sister had some and the rest, well, was now. Was the present.

He was staring at himself in a full length mirror, twirling and twisting, smiling with blushing red cheeks through the fur. He looked cute! So cute!, he thought. He was wearing a small tight pair of panties with blue and white stripes, showing off his bulge. That and a small bra and thigh highs, both with the same color patterns. If it wasn’t for the bulge, which even he found adorable… he’d look just like any other adorable woman.

“I’m… so… hot.” Ruby said, smiling at himself. He had felt a bit… bad about taking his sister’s underwear of all things but they were clean, he had made doubly sure, and they were cute. He just… he just wanted to feel cute. Instead he looked more than just that, he ran his furred hands down his sides, marveling and posing with a smirk on his face. Damn.

He saw his own bulge twitch and he flushed a little more. He was getting way too turned on by himself. If Sapphire saw him now she’d-

The door creaked and Ruby froze. He’d closed it, he knew for a fact, he had closed it. He’d been terrified of his sister catching him and had made sure to close it.

But he’d forgot to lock it.

For a moment, a brief moment, Ruby felt like and knew his life was over. Dread welled up and consumed him. Like hearing the sound of a piano about to fall on your head, that brief and single moment before a terrible disaster. It was like time itself had froze, giving him all the time in the world to truly be terrified of what his future held.

“...What.”

Ruby turned, staring, at his sister. Sapphire. She was staring at him in shock. In that moment, it felt like his brain was taking a snapshot of her, taking her fully in. They didn’t look alike, not even close. That wasn’t really too unusual among Deers. The differences were still pretty stark though.

She had inherited the purple hair of their grandmother, on their father’s side, and the fur color of their grandfather. It was a kind of white from chest to her crotch, spreading out to light tan and finally to a small amount of dark tan. She had white furred hands and hooves and beautiful blue eyes. Her face, rather than his cute button nose, was a bit more extended. What some would call a ‘classic’ deer face, depending on their age. Many people didn’t believe they were brother and sister when they first met, but they were. Deers just diverged that much among families sometimes.

She was usually a little, smug. Just generally playful and teasing. They had annoyed each other a lot growing up. She always called him a brat, when she was the brat! But now… now she was staring at him, mouth hanging open, in shock.

Ruby gulped.

“I…” The words weren’t there. It was like he had run out of air.

“Are… are those my clothes? Is that my underwear?!” She said, her face only growing more and more shocked.

“I… was just… borrowing them?” Came out a weak, weak voice that Ruby could hardly recognize as his own.

“They are! They are and you… what are you doing?! You’re… you snuck into my room and took… are you… you look completely like a girl! Wait, wait no, wait! You’re… you’re trying to look completely like a girl! This… you’ve always looked a bit… but… you…”

It seemed like Sapphire had also run out of words and Ruby’s face matched his namesake. He wanted to go find a hole to bury himself in and never see the light of day again. It was to the point the rest of his fur was even starting to go even more red. He just… wanted to look cute! It… it wasn’t that big a deal right?!

Sapphire clearly thought differently, as her look of shock turned into one of fury. Ruby gulped and took a step back, only for Sapphire to practically march her down, coming right up to her face. There was… something about her eyes. Ruby felt that he was seeing something strange in them.

“You want to be a girl huh? To dress like one, to act like one huh?!” She leaned in close, too close, closer and then-

Ruby, moments ago had been happy and cute and hot. Then he had felt an upswing of despair and horror, smothered by embarrassment. Finally, he’d been really scared when his normally calm sister had suddenly seemed to get really, really angry at him.

And now, as she leaned in… she kissed him. Her lips met his and it was like a bomb had gone off in Ruby’s mind, as his own sister put her arms around him, kissing him passionately like he was to die for. She pulled back and Ruby gaped, his jaw practically dropped to floor, thoroughly confused and stunned. A flashbang would have had less impact on him than what had just happened.

“Then you can get fucked like one.” Sapphire said, all the anger disappearing like a mirage, only pure lust left in it’s place.

Yes, both siblings held secrets. Not just one. While Ruby desired to act and dress and be like a girl, to be cute and feminine, Sapphire… had lusted after her brother for a very long time. They grew up together. No one knew better than her just how much he looked like a female than her. All through her life, from classmates to teachers to more, people had always asked about her ‘sister’. All other men were… well, men. Only Ruby was so beautiful, so female while not being one. It had confused her when she was younger, but turned into a burning passion as she grew older.

She had buried it, deep, but now? Seeing him, wearing those clothes? Seeing him, wanting to be a woman at least in appearance? Seeing his smile and happiness and his own lust at himself before he had noticed her?

Shock was the first thing she had felt. Pure and utter and total shock. But that could only last so long. It was while opening a valve on pipe near to bursting. Her lust swelled and swelled and swelled till… she couldn’t hold herself back anymore.

She wanted him. She needed him.

“S-Sapphire…” Ruby said, voice more a confused whisper, as if asking the world to give him the answers. Sapphire was more than glad to.

“You’re mine little brother. You want to act like a girl, wear my clothes? Oh, I promise I’ll help you do just that~”

Sapphire broke away from her brother, leaving him there for a moment. She headed towards her closet, while Ruby just stared into space, thoughts lost in a spiral. Too much had hit him at once. Had that really just happened? Had Sapphire kissed him… while he was wearing her underwear? Was he dreaming? Was any of this real.

That all came into sharp, sharp relief, as he saw what was in Sapphire’s hands. As she pulled herself out of the closet and walked towards him… one hand carried a thing of what could only be lube. Another… that was a strap on. A black, long, thick, strap on.

“W-W-What?! S-Sapphire, I-!”

“Aww. Don’t worry Ruby. I promise to be gentle. After all, if you’re going to wear girl clothes, you might as well cum like one right?” Sapphire said with a smirk.

“WHAT?!” Ruby said, flabbergasted and starting to back away slightly. He gulped, heart beating like a drum.

“Hey, come on. Be a good girl here.”

Something went up Ruby’s spine at those words. A light surge of pleasure. Sapphire seemed to notice, coming closer, both items still in hand. She got close to him, staring into his purple eyes. Reality was slowly catching up to Ruby, about what his sister, the sister he had known his whole life, wanted.

“B-B-but-!” Ruby said, looking at his sister who looked ready to pin him down right there and then. “W-We’re siblings! Y-You’re my sister!”

Sapphire leaned close, only an inch away, and Ruby’s breath caught as his heart sped away.

“I don’t care.”

She kissed him and this time, it wasn’t a surprise. He saw it coming. He could’ve moved, could’ve stopped it, could’ve…

He closed his eyes and practically melted into her arms. He didn’t lust after his sister but… but it was nice. Nice to be treated like this, nice to be wanted. Nice to be called a girl. He felt her arms tighten around him, her lips on his, his bulge-

His bulge grow. And grow. Pushing against the tightness that was his sister’s underwear till-

A cock coated in white fur popped out of the underwear, fully erect. His sister didn’t miss it, judging by how she suddenly seemed to push her waist hard against him, rubbing against it. He could feel it, her pressing herself against him, rubbing as she kissed him passionately. How long had it been since he’d felt anything like this? Had he ever? Had he ever felt someone desire him so much? He began to lean in towards the kiss when-

He was left blinking as all too quickly, Sapphire broke off. She moved so fast, her arms unwrapping around him, that Ruby was left blinking in shock for a moment. ‘Where she’d go?’ He thought, refocusing. His mind was still a bit of a mess but, this wasn’t a dream right? His sister had just been… well… she was still here right? He looked and-

Ruby gasped as he took in the scene in front of him.

Sapphire was… completely naked. Her beautiful fur was on full display but even that wasn’t what he was focusing on. Nor was it her chest, as she had always been mostly flat chested. No, it was the fact that she was already butt-ass naked and… attaching the strap on to herself. She must have done it before because… in moments she had the thing hooked on and was already beginning to apply lube.

Ruby simply gaped at her. Was he sure he wasn’t dreaming?

“Oh!” Sapphire said, turning back to him. “Don’t worry girly, a cute girl like you has such a nice hole to penetrate, no need to take off ‘your’ clothes. I’ll just pull them to the side.”

Ruby just stared, heart racing, panic beginning to start setting in and washing away his earlier feelings. Feelings that only grew in intensity as he began to watch her grip the long, hard plastic with one of her hands, stroking it and coating it more fully in lube. His vision seemed to narrow, seeing only the massive black obelisk that seemed to dominate his vision, like a monolith to his sins, threatening him with the future his choices had led to.

H-H-He liked… looking like a girl. Sounding a little like a girl. Dressing and acting like a girl. Feeling like a girl. B-But… he didn’t know if he was ready to feel like a girl… He didn’t have that ‘part’ so that could only go…

Ruby gulped and for a moment, the situation hit him all at once again.

“S-Sapphire… maybe we should… stop. You know… this is wrong and-”

Sapphire simply smiled at him and despite himself, Ruby felt his heart skip a beat. That same look was in her eyes. That same… look of almost crazy levels of insane lust. Of insane desire.

Before she even spoke, a new realization slid in and mentally smacked Ruby upside the head. He wanted this. Maybe not… his sister but… those eyes. Those eyes that stared at him and didn’t accidentally see a woman, didn’t see an uncomfortable feminine man, but looked at him like a piece of meat because of it, that wanted to dominate and take him… he shivered.

Sapphire had opened her mouth to say something, but she must’ve seen something as well. Her mouth closed with a smile and she simply said.

“Hey. Go ahead, get on the bed my dear brother. Oh, or should it be sister now? Silly girl, already sending mixed signals.”

Ruby looked at the bed that his sister had nodded too, the bed he had slept on plenty of times but now, now it was like walking towards a disaster. His heart beat so fast he might as well have been a rabbit anthro. Or a hummingbird one. This was fundamentally wrong, this wasn’t good, this was, this was so weird and-! And-! And he fucking needed it. It was like wearing the clothes had been a small drug and this, this was like overdosing. Those eyes, that he was going to be pinned down and-

He needed it. Needed to feel it, needed to feel what it was really like to be a girl, needed-

He put a hand over his fast beating hurt, dick throbbing so hard it practically hurt. He got on the bed, lying on his back, taking deep, deep breaths. As he lay there, mind a mess of emotions and empty of thoughts, he watched his sister lube up. She was… really going at it.

And staring. Directly at him. Stroking faster and oh god, that was really going to go in him. Oh god.

“Oh my god.” Ruby said, this time out loud.

“Oh yes, you’ll be saying that a lot by the end of the night. We’ll see just how many moans my deer little girly brother can make. I’ll make sure you moan like a whore by the end of the night. After all, you’re certainly dressed like one.”

“These are your clothes!” Part of Ruby, the part that had so easily teased back and forth with his sister said.

“Tsk tsk, seems like someone is being a bad girl. Time to teach you some manners.”

His sister began to walk closer to him and Ruby… shook. Just a little. He was scared and nervous and excited and… and his mind was staring so, so hard at the, the strap on. He’d… never had anything up there. W-Was it going to h-

So focused was he, he didn’t even noticed Sapphire’s hands reaching out. Not till they grabbed him. He blinked in surprise… only to be flipped around a moment later. The bed shook for a moment as his kneeled down on top of it, above him, and began to lift him with her hands.

“Come on now, on your knees.” She said it such a heated voice that Ruby nearly let out a moan from it alone.

Then he realized exactly what position he was putting in.

Hands down, on all fours, like their ancient ancestors. And with his sister right behind him. Not just behind him, but already, he could feel something… hard and wet being pressed up against him. With one hand, Sapphire pulled away his underwear, and he nearly jumped as he felt the hard black strap on press up against his asshole.

“A-ah. W-Wait.” Ruby said, his whole nerves feeling shot. H-He just needed a moment, a moment to collect himself. Well, no, actually, m-maybe this was a bad idea. Maybe they should both calm down and take at least a whole day to calm down and-

“Bad girls…” Sapphire whispered huskily into his ear, sending shivers up his spine. “Don’t get to ‘wait’.”

Ruby felt the strap on push against his asshole all of a sudden… and keep pushing. And pushing and pushing. He groaned, trying to pull away, only for a pair of hands to begin to pull him back. Ruby’s eyes widened as he grit his teeth, his ass feeling like it was-

Ruby’s mind froze. And then collapsed.

For a moment, there was silence. And then a loud, involuntary moan rose up out of Ruby’s throat, ripping itself out of him. He could feel it! He could feel the hard piece of silicone tearing itself into his asshole! It was like his whole body had been set on fire and electrified from the inside, like a lightning bolt of pain and pleasure had slammed into his brain with full force, as his asshole squeezed the silicone so hard he’d thought it’d break. His body tried to collapse then and there, falling forward, but a furry pair of hands held him firmly.

“Okay, good! I finally got the tip in.”

Even as Ruby’s brain felt it was melting and being electrified, those ringing words were like gunshots to his ears.

‘The tip?!’ 

Ruby felt a shove and a pull, and pain and pleasure blossomed in him at such strong levels, that he began to forget. Forget himself, forget space and time, forget he was being fucked by a strap on or by his sister. The only thing left were those two feelings. And as they ran rampant throughout him… they slowly morphed into just pleasure. As Ruby began to come back to himself, he realized he was drooling and moaning like a whore, his mouth wide open, as his whole body shook as Sapphire fucked his ass.

Like the good girl he was.

Ruby’s eyes once again rolled into the back of his head, as his whole body felt like it was burning up into ashes, as Sapphire pounded his asshole, as his dick practically vibrated from just how much this was turning him on. He was being… fucked. Absolutely fucked. In his tight virgin asshole. Just like a girl.

And it felt so good. 

The hands wrapping around his hips pulling him back, the hard thing in his ass that despite him squeezing tighter and tighter, kept pumping in and out of him, the shaking of his body, the smell in the air, the moans of not just himself but his sister too as she grinded against the strap on with every thrust into him.

“Yeah!” Sapphire screamed, lust having over taken her mind at seeing and feeling her little brother be plunged deep into. “You’re such a good girl! Moan more for me! Let it out you absolute slut! Come on!”

Sapphire sped up and it was all Ruby could do to even stay conscious. It was so intense, he barely had control of his body, as he almost animalistically began to throw hip hips back, wanting it deeper and deeper inside him! He wanted to be fucked. More! More! 

Neither knew how long they fucked, it felt like an eternity but nothing like a dream. Everything was too sharp, too real, too amazing. It could’ve been minutes or hours, but they fucked like rabbits despite being deer.

Ruby felt an upsurge of feeling, moaning and squeezing so tight he thought his mind had broken, feeling an orgasm tear up insides like he was made of paper. But Sapphire just kept going, even as orgasmed from anal alone.

Sapphire could feel the strap on rubbing against her pussy, with every single thrust. Could hear her little brother’s moan, feel his body, see him on his hands and knees and every time she looked down, she tried to thrust harder and harder.

Like a rising scream or musical crescendo, the intensity reached it’s peak and lust propelled Sapphire onward.

With one hand, she roughly grabbed onto her brother’s head, as he was moaning deeply. With the other, she finally wrapped her hand around his cock.

“Good girls.” She said. “Swallow!”

She shoved his head down between his arms and began to stroke his dick with her hand. So intense was his pleasure that it barely took two tugs before he came, deeply, directly into his own mouth.

Ruby… had been in his own eternal world of joy, before to him, everything had happened all at once. He’d heard the words and the very next moment, he’d felt his head be shoved down and his already rock hard dick finally explode as something touched it. And the next moment, he was cumming directly into his own, tasting the salty goo pour down his own throat, swallowing it almost entirely on instinct, coating his mouth.

Sapphire orgasmed deeply just from watching, as their fuck session finally began to come to an end. She collapsed on top of him, pulling him down with her. They both lay there, one of them still swallowing come, the other still deep inside the other with a strap on, breathing heavily.

Hot, exhausted, but feeling so, so, good.

Minutes passed, before either of them spoke.

“I…” Ruby started. “I think I ate my own cum.”

“Just…” Sapphire said between breaths. “Just like a good girl.”

Slowly, Sapphire wrapped her arms around her little brother, cuddling. She’d finally done it. She’d fucked him. She had wanted do it so for, so long. She’d even gotten the strap on for it, in a flight of fancy. She’d never actually thought she would… and now she had. Her cute feminine brother was in her arms.

Ruby was still stunned, pleasure still coursing through his veins, when he felt Sapphire wrap around him, hold him tightly, and began rubbing his head gently.

“Good girl.” She whispered into his ear. He shivered and a shy smile spread across his face. Soon, his sister seemed to falling asleep.

“Uh… Sapphire. T-The strap on is still-”

“Shhhh. Go to sleep.”

“B-But Sapphire-!”

“Tired. Sleep.”

Saying only that, Sapphire finally nodded off, Ruby still with a hard piece of silicone up his ass. It took him far longer to finally get to sleep, but he did it with a smile. A very happy, lewd, smile.

[Commissions available, feel free to DM me!]