“S-sis, something’s happening!”

Hazel wasn’t sure what her brother meant at first, but she quickly found out. The more she pawed and nuzzled his fuzzy sheath and even fuzzier balls, the more his sleek, pink thingy slipped out, almost like it was coming out to play! “Isn’t that your weewee?” she asked, sniffing curiously at the twitching eevee’s parts. “Why’s it getting bigger? You’re not gonna pee, are you?” She wrinkled her muzzle at the thought.

Dimitri shook his head. “No, eww! It’s just really tingly when you touch it.”

Hazel eyed the leaking hole at the tip dubiously. “Uh-huh.” 

The two eevee twins were hidden behind a ring of bushes in the forest where they grew up, exploring each other for the first time. Hazel, the eldest by a few minutes, had her snout between her brother’s hind legs, while Dimitri was on his back with his forepaws dangling over his chest. She continued pawing at his swelling peepee, enjoying the way it stood straight at her, firm despite the softness. She giggled when it flexed. 

“What’s it feel like when it moves like that?” she asked without stopping her exploration. “I don’t have one, so…”

“It feels tight.” Dimitri watched himself grow with as much curiosity as his sister. “Tingles a whole bunch, too! And, um, sorta like I have to pee? But not really!” he added quickly at Hazel’s glare. “Can I look at yours now? Mine feels weird and you’ve been playing with it for like a minute!” There was an eager hitch to his voice, and his thingy twitched again.

Hazel hesitated--his privates were really fun to touch, even if they were leaking, and she didn’t want to stop--but she pulled herself away from Dimitri’s crotch, rolled over onto her back, and kicked her hind legs out, showing off the tiny mound sticking out between her thighs. "Alright! Your turn, your turn! You can touch mine now!"

Dimitri beamed at his sister’s excitement. She was always so much fun to play with, and now she was fun to explore with, too! Getting back onto his paws, Dimitri made his way over to his sister, sat down in front of her, and scooted his rump close enough that her fur brushed his forepaws. He stared at her girly place with unrestrained wonder. It was right there jutting out from her fuzzy crotch, almost like his sheath, but smaller and shinier. He lifted a paw toward the tiny slit, curious what it would feel like, and after only a moment’s hesitation to wonder if Mommy would be mad, her touched it.

“Heh, it’s squishy!” Dimitri said, giggling as he played with his sister’s diminutive mound. He slipped a toe bean between those weird folds, and was excited to see them spread. “Ooooh, very squishy! How’s it feel?”

“T-tingly!” Hazel fought to keep still as she giggled from the feeling. “You were right--it does feel like I have to pee. But I don’t!” 

“Does it feel tight too? Mine feels tight.”

“Nope! Your paw feels warm, though. Kinda nice,” she admitted.

“Really?” He leaned in with interest. “Because, uh, when you were touching me it felt nice, too. It felt even better when you moved your paw around. Maybe if I...” Dimitri began to roll his paw in gentle circles, feeling her silky-smooth folds gliding across his sensitive paw pads.

Hazel squeaked and reflexively wrapped her hind legs around her brother’s body. “K-keep doing that!” she demanded. Everything felt tingly down there, and Hazel didn’t want it to stop. Ever. The more her brother rubbed her squishy parts, the better it felt, and the better it felt, the smoother his paws motions became. Suspiciously slick even, but she barely cared.

Dimitri was having fun making his sister act like this, but he soon noticed something weird: his paw was getting wet! Hoping it wasn’t pee, he leaned down and sniffed. A scent unlike any other slammed into his nostrils. It was… it was… 

Amazing. 

His crotch felt weird, tighter than ever. And there was this urge--this need--to soothe his thingy; to put it somewhere to make it feel less overwhelmingly tight. Paradoxically, his mind screamed at him that the perfect place would be somewhere snug and warm and wet. 

His eyes down to his sister’s crotch, where her slit parted slightly to drip that strange, amazingly good smelling fluid. 

He removed his soaked paw from her crotch and stepped over her as though in a stupor. “S-sis, can I--can we touch thingies?” He put his forepaws on either side of her chest, right under her own forelegs, and pressed his hips to hers, making their thingies touch. “I think that would feel really neat…” 

“S-sure,” she said quietly, feeling the same way. Having him over her like this was weird, but nice. It made her tummy warm and her crotch all tingly. 

His ears shot up. “Really? Awesome! I’ll just, um, let me just.” He looked into his sister’s wide, trusting eyes as his aching thingy twitched between her hind legs. He whined at the feeling of her soft fur rubbing against him, and without really thinking about it, he began instinctively humping as he searched for somewhere to bury himself. 

“Th-this is so weird,” Hazel whispered as he kept rubbing himself against her. “I can feel your thingy touching mine.”. 

“Y-yeah, weird.”

But he didn’t stop, because neither of them wanted this to stop. Eventually, her slit caught his tapered tip in intense, squishy heat, and without hesitation he thrust forward, burying himself inside her with shocking ease. 

Dimitri collapsed onto his sister’s chest as indescribable feelings overwhelmed him. Her heated girl parts squeezed him as he held her to his chest, whined into her ear, and pushed deeper. The soft clenching of her insides felt amazing around his thingy, making him twitch excitedly within her. He felt high in the sky, soaring over his sister, immense pleasure hyper-focused on this one spot between his legs. How anything could feel this good, he didn’t know, all he cared about now was sliding as deep as he could into her squeezing heat to experience more of his sister’s squishy depths. 

Hazel wasn’t fairing much better on the overwhelmed front. One moment, she was gazing up at her favorite brother as he prodded her with his warm tip. It tickled, but something inside her wanted--no, demanded--more. That something got its wish.

An instant of unimaginable pressure between her legs, and then that same heat and pressure spread everywhere. Her body lit up with indistinct feelings of fullness, of wet, slick heat. As if she were being stretched from the inside, everywhere, all at once. 

Other than a dull ache, it felt good. Right. It felt perfect--she yelped as her brother pushed the rest of his length inside, hilting her in one firm thrust. His little balls impacted her cookie with a soft thwap, and Hazel couldn’t help but push back into the feeling. Scratch what she felt before: this was perfect.

And then her brother began to hump, and her mind was replaced with mush.

“Sis!” Dimitri cried as he pounded away at his sister’s squishy cookie. Each plunge greeted him with unimaginable softness, her heated walls tightening as if to hold him inside. But he couldn’t stay inside, no matter how much he wanted to. His instincts demanded he pulled out before shoving right back inside with a wet squelch.  ”You feel amazing! It’s-- oh my gosh-- I can’t hold-- gonna-- something’s gonna come out!”

His penis twitched inside her one last time before the pressure he felt imploded in a supernova of sensation. He held onto his sister tightly as he squirted something into her, then squirted again, and then again. All while his penis felt like it was a balloon, expanding to the point where he couldn’t pull out even if he wanted to.

“D-dimitri!” Hazel gasped, the liquid heat filling her proving the final straw for her own pleasure. “Are you peeing inside me?!” Just as she said it, she felt her insides explode into motion, clenching and squeezing and-- Her eyes widened as fluids gushed out from their seal. “Oh my gosh, am I peeing? Ahhh, but it feels so good! My private parts feel so good! Don’t stop!”

Hazel stared into her brother’s eyes; they were wild with pleasure, but the instant he noticed her gaze something softened in them. He smiled shyly, a smile she returned with a beaming grin, giggling at the crazy thing they were doing. She leaned down until her nose booped his. 

“I love you,” she breathed, the words coming to her with a naturalness they never had before. Then she licked him. 

He looked stunned for a moment, before giggling just as loudly and licking her back. “I love you too, sis! I wanna stay like this forever…”

Later into their tie, the impatience of youth made itself known as Hazel tried pulling away, but all she accomplished was tugging painfully on their connection. 

“Oww!” Dimitri yelped. “Hey! Don’t do that!

“Sorry.” She clenched down as she squirmed against Dimitri. “I can feel you squirting. You’re not really peeing in my thingy, are you? ‘Cause that would be really gross.”

“N-no! It doesn’t feel like peeing… It just feels all nice and tingly and awesome! Does it still feel good for you? You stopped squeezing me as much.”

“Sorta. It kinda just feels like a cramp that tingles sometimes.” Hazel yawned, her maw opening wide enough to make Dimitri yawn too. “I’m tired… Let’s take nap!”

Dimitri was all for being lazy. 

Dimitri rested his head alongside Hazel’s, and snuggled up with her into a fuzzy mass. They remained stuck, and while he continued to squirt into her, and she continued to occasionally squeeze, neither paid it much mind as their mutual yawns grew contagious until soon they drifted away, and their slowing hearts beat together as one.