It was a sunny day at Muskrat beach. Small houses dotted the sand, and most 
beach-goers had returned home for the night. But suddenly, the eleven year-old 
fox twins Clara and Jacob bounded out of their cottage - where they and their 
parents were staying for the summer - and began to dart across the beach, 
kicking up damp but warm sand.  Clara had challenged Jacob to catch her but was 
managing to outdistance her brother. "Don't go too far," their mother called out 
as she saw them leaving the house. In between excited giggles, the cubs voiced 
their assent to her request.

It had been hot and muggy all week, but there had been that day a mild drop in 
temperature. It was still, though, comfortably warm, and the young siblings 
could safely remain in their light swimwear - a two-piece bikini for her and 
swim-shorts for him - without fearing the cold.

The twins sprinted down the beach for half a minute, Jacob unable to close the 
distance between himself and his sister. But Clara quickly became bored with 
running, and (to be honest) was looking forward to a bit of rough-and-tumble 
contact with her brother; so the girl-cub slowed her pace just enough for Jacob 
to catch up. She let out a yelp as he tackled her from behind, and the two fell 
to the ground, Jacob laughing and feeling satisfied that he had successfully 
outpaced his sister again. He pinned her to the ground, pressing his body down 
on hers, trying to hold her in place. Still giggling herself, Clara squirmed and 
struggled under her brother, making a half-hearted attempt to escape. Suddenly, 
she noticed the a little bulge in Jacob's shorts pressing against her rear-end.  
Knowing what it was, she shot a forepaw back to grab Jacob's erection through 
his shorts.

Now it was Jacob's turn to yelp. He leapt up, shouting, "What the heck are you 
doing?" Clara hadn't meant to upset him. "Sorry, Jake!", she said 
apologetically, still lying on the ground.

"That's okay," mumbled the boy, who hadn't meant to snap. He fixed his eyes on a  
point on the ground away from his sister, more embarrassed than anything else. 
He wasn't really upset. He had just been taken a bit off guard, wasn't expecting 
it. 

In fact, the touch only made Jacob want more. Summer vacation, though it had 
only been a week, had given the twins the opportunity to spend much more time 
together than they had for a long while, having been placed in separate classes 
in school. Now that he was seeing so much of his sister - especially seeing her 
running around on the beach, without heavy clothes or cares - Jacob had begun to 
experience strange new desires. 

And suddenly, he felt those desires growing unexpectedly. The thought had 
flickered through his mind that very morning that perhaps today was the day. And 
now, aroused by the wrestling match and his sister's brief touch, he was certain 
that the right time had come. He felt a vague - but strong - sense of excitement 
as he tried to solidify his resolve to act. He almost couldn't work up the 
courage to tell his sister what he wanted - and he himself wasn't exactly sure 
what he wanted. But he was sure it involved Clara, was sure it was somehow the 
cause of his erection. And the longing was so intense! Jacob needed Clara, 
needed her in ways he didn't fully understand. He only hoped that Clara would 
understand, wouldn't feel put off or disgusted by his requests.

Jacob knew they would need privacy, and he saw a little bush that he believed 
could shield himself and his sister from prying eyes. "Clara, let's go over 
there," Jacob said, motioning toward the vegetation, his nervousness driving the 
pitch of his voice up an octave or two. Clara assented, not entirely sure what 
her brother was up to. They walked over to the bush and Jacob led his sister 
behind the branches. Now that they were hidden away, sitting and facing each 
other under the bush, Jacob felt the blood rush to his face with his growing 
feelings of anticipation and shyness. "Uhhh...d-d-do you wanna get naked?" he 
managed to blurt out, surprised now at the sound of his own voice. He blushed 
even more deeply. 

Clara's breath caught in her throat. Though she had seen her brother naked 
plenty of times before, this was somehow different.  The thought of seeing her 
brother's body - and showing him her own body - now gave her an amazing and 
wonderful sensation. The girl was fully willing to oblige the fox-boy's request. 
She only nodded, her ears taking on a pink color.

Without saying a word, Jacob then slid over close to Clara and slipped off his 
sister's bikini top, placing it in the sand. He gazed at her little girl-cub 
nipples, and then gave them a quick lick. Jacob detected a faint scent hanging 
in the air, and he knew instinctively that it was his sister's.

The scent called him to continue. Jacob put his hands on his sister's chest, and 
then slid them softly down her body, feeling the warmth of her fur. He grasped 
the piece of cloth obstructing Clara's cunny and slid it down around her legs, 
and then off, depositing it with her top. Jacob looked with wonder and amazement 
at his sister's vulva, which had grown moist with her cub-juices.  Placing his 
face in between Clara's legs, Jacob inhaled deeply, mesmerized by her 
intoxicating aroma, which now filled the air. He then slid off his own shorts. 
He had never lost the erection he had gotten wrestling with his sister on the 
ground, and his little-boy penis was now exposed, pointed straight out toward 
Clara. 

The siblings sat for a long moment gazing at one another's naked bodies. But 
Jacob still felt a desire for something more. He lightly pushed Clara - who did 
understand, and shared his longings - down to a prone position on the sand, and 
parted her legs just a bit.  Jacob now climbed on top of her as she spread her 
legs apart even further. He pressed his young penis against her vaginal lips, 
looking into her eyes. The gaze that stared back at him beckoned him to press 
deeper, and he was soon inside. Clara's vaginal walls gripped Jacob's penis 
tightly, and instinct now took complete control; the two knew what they had to 
do. 

Jacob began to push his penis in and out of his sister; she began to push back. 
And soon they were lost in the rhythm and the feeling, their hips thrusting in 
time to the same melody, each cub's eyes gazing intensely into the other's. 
Clara panted softly with each motion, her lips parted ever so slightly. She felt 
then an intense love for her brother as he slid in and out of her. And after a 
time, the fox girl could feel a soft sensation of pleasure building in her 
tummy. It grew and spread throughout her body and soon she  was enveloped in an 
extraordinary feeling of delight.

And now Jacob himself began to feel a wonderful tingle, a feeling of physical 
pleasure even more intense than before, building up in the back of the head of 
his little penis. And then, after only a moment, the feeling exploded up his 
shaft, into his thighs, down his legs,  and up through his entire body. The 
sensation paralyzed him with pleasure, and he let go a soft little moan. The 
whole world seemed to melt away, leaving only him and his beautiful sister, the 
sole inhabitants of a universe saturated by pure pleasure, filled to the brim 
with delight and love. As the sensation began to subside, Jacob could feel his  
penis pulsating of its own accord inside the fox-girl's soaking-wet cunny, which 
now dripped with a mixture of vaginal juices and Jacob's own warm, sticky semen.

When Jacob's first orgasm had passed, it left him feeling tired but deeply 
satisfied.  He only wanted now to snuggle up to his Clara. Clara - now awash 
with the afterglow of her own first orgasm - was more than happy to oblige, and 
the two lay together, looking into each other's eyes, sharing smiles, holding 
one another in silence for a good long while. This had been the first time - but 
both felt certain it would not be the last.