Sibling's Breakthrough

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11-year old fox brother and sister learn about the differences between one another.


"Okay Lysa, I'll see you tomorrow..." said Anthony, an 11-year old fox, grinning as his best friend ran off to next door where she lived. Anthony was just about to enter his own home, one hand on the doorknob as the other hand was shaken towards Lysa, a friend Anthony had had since he could remember. The 10-year old panda girl and Anthony were inseparable most of the time, and had been getting much closer lately as they were having fun, something that had Anthony a bit confused, but he didn't mind since he'd been harboring a small crush for Lysa since recently.

"See ya later hun!" she exclaimed with a wink as she opened her door and rushed inside, since she was late. Anthony smiled, entering his house and heading for the kitchen, yelling, "Hey Ash, I'm home!"

"Hey, where were you?" demanded Anthony's older sister, Ashley, a 12-year old vixen, surprising him from behind with an amorous, but solid, tap on the ass. "Hey!" Anthony yelled playfully, grinning as he turned around, aiming a quick slap at her face but hitting nothing but air, she being much quicker than he is, and as she moved out of the way she grinned and punched Anthony (although not too hard) in the stomach, just hard enough to make him go "oof!"

Pulling away, she saw him on the floor, and knowing that she had gone too far again, and rolling her eyes, she bent over to help her brother up. As she bent over to haul him up by his shoulders, she noticed he was grinning broadly, and almost immediately, she felt her feet being swept up from beneath her as he kicked his sister off her feet, making her land right beside him.

Laughing wildly and springing up onto his feet, Anthony grabbed his sister's ankles, and still grinning broadly, he grabbed the ends of her pants and pulled them off her legs in one quick tug.

At this point, Ashley was grinning too, this being the kind of thing they did to each other all the time, and since their parents were gone, having left Ashley in charge for a week, the siblings found no reason to keep quiet, screaming and giggling and laughing raucously, banging into objects and furniture as they rolled around stripping each other's clothes off.

Suddenly, Ashley felt her shirt being pulled over her head from hands suddenly behind her, and as it was being pulled off of her head she remembered about a new change about her that her brother didn't know about yet.

Anthony pulled off his sister's shirt, only to reveal a new kind of clothing he'd never seen before, which seemed to be covering her nipples and a large circular space around her chest. The siblings had noticed each other's nipples to each other during previous times when they were wrestling around and had ended up examining each other's bodies, and they had noticed they had some different and some similar attributes, but they weren't really that interested at the time. This time, however, it was quite different, and Anthony asked his sister what this strange new garment was.

"Mom says it's called a "training bra", and I'm supposed to wear it now cuz I'm developing..." said Ashley, sounding as confused as her brother. "Training bra? Whatever. How do you take it off?" demanded Anthony, eager for more wrestling.

"Here, watch," said Ashley, demonstrating easily, since it was a front-clasp. This was the moment Anthony had been waiting for to jump onto his sibling and wrestle her into submission, but a curious sight greeted his eyes: Ashley's nipples were now a little farther from her chest, and small lump-like masses had built up on her chest.

"They're my boobs... they're gonna get bigger, like mom's!" Ashley giggled, noticing the look on her brother's face, and realization struck him, his eyes still staring avidly at her new developments. At this point it struck Ashley that she was naked aside from her pink "Lil' Vixen" panties, and her brother was only wearing his racing car boxers, and as they looked at each other, Anthony noticed something else about his sister he'd never really paid attention to before, her crotch area. As he looked closer, he realized he was right; she didn't have a sheath!

"Ashley, where's your sheath?" he asked, disturbed. His sister looked down, wondering what he meant, and remembered that her "girl privates" (their parents were the kind who are too scared to tell their child anything until they ask for it) were different from boys', and that boys had something called a "sheath", but she didn't know any more than that.

"I don't have one... I'm a girl, silly." She grinned at him. "Girls don't have sheaths? How do you pee?" asked Anthony, aghast. "Well, how do you pee?" demanded Ashley, wanting to know first, and now powerfully curious about what her little brother's boxers contained. "Hey, I asked you first!" replied Anthony, indignant.

Seeing that this was going to be an argument, she just said, "okay, okay," and hooked her thumbs around the edges of her panties and started to lower them. However, she suddenly pounced on her brother and, taking him by surprise, she successfully ripped off his boxers, revealing his 11-year old sheath.

"Hey!" he yelled, reaching around her waist and tearing off her cute panties, showing off her pink, furless cub slit. "Cool!" Anthony said gleefully, staring avidly between his sister's legs. Ashley just sat there, also staring at her sibling's genitals, at a loss for words for a few seconds, then realizing what she was doing quickly looked up to her brother's face to see where he was staring, and said, "Hey! You're not supposed to look at me there, it's my private place!"

Anthony, startled, snapped out of what he had been thinking about, and replied, "Well you were staring at my privates too so we're even, okay?" Ashley thought for a moment, "Okay deal." She said happily, adding with a thoughtful look, "I suppose if we're even, then... you're going down!" Taking this opportunity to leap on her brother, as they started to wrestle around again.

This time, however, as they rolled around, the competition was getting much more intimate than usual, and as the siblings began to put more passion into their efforts, things got more and more heated. Finally, Ashley pinned her brother fair and square against the living room floor, but as she grinned at him from on top, she noticed something strange had happened to his sheath; a small amount of hardening pink foxhood had slid out.

Anthony, however, had no idea that he was becoming erect, being too winded from the intensity of the match. So when his sister asked him what was wrong with his sheath, he was quite surprised to see a semi-hard cock having slipped out of his sheath for the first time. "What's wrong with it?" Ashley asked, extremely curious, sniffing it, and finding the smell quite appetizing. She suddenly felt something stir in her, which had to have something to do with the pink meat in front of her.

Anthony watched wide-eyed, completely thrown off as his sister sniffed his sheath, murred softly, closed her eyes and began to softly lick the tip of his penis. A tingling shiver traveled instantly all though his body, and Anthony shivered, moaning loudly.

Realizing what she'd just done, Ashley's eyes grew to the size of plates as she frantically apologized to her brother, "I'm sooo sorry Anthony, I can't believe I did that!" Anthony grinned and ducked his head between her legs, quickly licking deeply into his sister's slit. Feeling the same, spine-tingling feeling rush through her body, Ashley murred very loudly and her legs twitched.

Gasping, she asked, "Is that what you felt?" Anthony nodded, exclaiming, "I can't believe no one told us about this! It feels sooo good!" he looked down at his semi-erect penis, and not even caring that his sister was watching him, he began to rub his length with both paws, moaning as he did, caressing his fox meat, stroking the head and beginning to pant heavily.

Ashley couldn't believe her eyes as her brother closed his eyes and began pleasuring himself right in front of her. She opened her mouth to speak, but suddenly found that there was no point, and crawling a bit closer to her younger brother, she grabbed his hand, causing him to open his eyes, then she guided his hand to her slit, the look in her eyes the only confirmation he needed before he began stroking the outside of her folds, his fingers exploring all around her pussy.

As she felt her brother begin to delve into her most private area, Ashley moaned and began to examine her sibling's shaking genitals, which were obviously begging for attention.

She had enjoyed what little she had been able to taste of his cock when she had licked him, and so quickly began lapping away at the head, grabbing her brother's length and stroking gently as she licked and nibbled at his cocktip. Feeling his sister's teeth on his head was too much for him, and although he was to young to produce any cum, he still groaned and bucked his hips into his sister's face, his tongue delving deeply into her sopping pussy, as she clenched her teeth and let out a throaty yowl, finnaly cumming all over her brother's face, who's more than eager to lap it up out of her passage, a grin plastered across his face.

"That was incredible!" Exclaimed Anthony, his crotch shivering as he began to jerk himself off again already, eager to feel the sensation again. As Ashley watched her brother play with himself, his eyes closed and his muzzle open a bit, enough to let out the occasionnal yipping sound and a trickle of drool, it dawned on her that if they put their genitals and rubbed them against each other, this could feel blissfully good, probably much better than what they had been trying.

"Hey Anthony," Ashley told her masturbating sibling, "come over here!"

"But I'm sooooo close!!!" whined Anthony, his hands pumping over his cock frantically. "C'mon," intervened his sister, pulling his hands away from his throbbing and now bright-red penis, "I've got a really good idea, come here."

As she explained to him what her idea was, Anthony, still slowly stroking his erection, got more and more excited at the idea, and not waiting for his sister to finish, he threw himself at her, determined to win the wrestling this time.

Sure enough, a few moments later, Ashley was lying on her stomach, her brother's semi-hard maleness pressing against the small of her back, as he held up her arms behind her, immobilizing her completely. "I hope you're ready for this," he grinned, as he aimed, and with one quick thrust, plowed his hard cock directly into his sister's virgin pussy.

Ashley felt her hymen break immediately, causing her to squeal loudly in pain, but Anthony couldn't really care less at this point, beginning to thrust quickly and wildly into his sister. After a few moments Ashley's pain faded, instead replaced with a filling, extremely erotic feeling that was satisfying her in a way she hadn't thought was possible, and she writhed beneath her younger brother as she was fucked mercilessly.

After a few more minutes, they both began to moan loudly again, Ashley now completely into it, gyrating her crotch and rubbing her clit as she was invaded by her brother's wildly thrusting penis, which felt better and better every time it left and entered her cunt, which was now completely soaked. Very soon she felt she was about to burst, this orgasm was much more powerful than the last one, and she screamed wordlessly and passionately as she came explosively, just in time to look back to see her brother's face clenched up, then, as he let out a loud roar that made her jump, he clenched his jaw and thrust into his sister's passage one final time as he came, cumming for the first time into his sister Ashley.

Completely drained, Anthony and Ashley dropped to the floor, creating a large pile of worn-out, horny, sweating fox limbs and twitching genetalia. After a few more seconds, the pair were both fast asleep, both lying entangled with each, a large grin on both their faces.