Elbow's lake, the most picturesque natural place of the world. That polished rock bordered water spot is surrounded by a pine forest far away from the roads and civilisation. It's a place know only by few lucky choosen ones who dare adventure themselves across rough earthy path. That place is the perfect place to practice swimming skill cause the pine forest who surround the lake offer the perfect protection against wind who grant a waveless warm water to all the lucky swimmers who know that place.
Rusty was one of the lucky few aware of that perfect swim spot and decide to spend his last sunday envoying elbow's lake before go back to school. Armed with a swim short, a towel and a pair of flip flop, he take a deep inspiration at the lake fresh air with a relaxed smile. Trying to forget how hard his ass was kicked at video games by his older brother, the picturesque view and the perfect weather help him chase those undesired memories off his head. Arriving near the water spot, he start to rub his neck and green round otter ears and stretch to get his muscle warm.
As an otter boy his swim skill are something he's very proud of. The sun was playing with his brown fur as he stretch on the stony shore. His nimble body and tail yet let appear some muscle, making assuming he swim a lot. He sigh twice staring at the horizon as his muscle were ready to make some exercise and get ready to dive in the lake before getting his focus interrupted by a splash noise. Surprised by that unexpected noise, because he thought he was alone, his green ears raises up and his tail flip in the emptyness of the air.
Wondering who else can possibly know about this very secret paradise spot, he decide to clim on the tiny little hill near him, sneak and hide behind a tree to take a peek look at the origin of that water splash. Staring at the lake, nobody was in sight, but the water moves reval to the wise otter boy that someone was about to make surface. After few seconds of patience, a blue mane emerge out of the placid water. The young otter despite his excellent eye accuracy was unable to clearly see the one who trespassing in his paradise place.

Soon is mischievous mind started to get in march and started elaborating an innocent and juvenile prank for have fun and scare the trespasser. When the far away body turned his back he quickly dive in the water and use he's awesome breath control skill to hide under the surface. As an otter he got natural skill at controlling his respiration under water and was able to stay a long time under the surface. That lil juvenile prank was the best thing he's mind needed to clear away the back to school soon and his older brother kicking his ass at video games stuff.
The idea he has in mind was not personal or mean, he just needed to be childish to chillax. As he get closer, he peek an eye out of the water to get a better view to the intruder. When he did it his eyes widened and his breath was taken off cause what he see was just the cutest cat girl he ever see. It just saw her back but her shape, her hair and her lovely girl swimsuit just blow his mind. Her ears then rise in the air reminding to the otter boy that she ear something and was about to turn around so he quickly dip his head under the water hoping that she didn't see him.
The few he see of that girl was enough to bring the blush on his cheek and make he's heart race more than usually. Well to bet fair it can also be imputed to the long under water swim but he was used a lot to it and was sure it definitively was about her cause the picture of her glorious butt squeezed by that tight swimsuit turned him on cause lil hard on started to create a naughty bulge on Rusty's swim short. He started to feel so hard about her that he's focus started to getting low and his underwater breath control started to get weaker until he couldn't take it anymore and decide to make surface and abort the joke to get some air.
He emerge his head out of the water with a loud gasp that was loud enough for the girl to notice him. Her eyes widened and she dip her body a little more on the water to only let her head out breathe and steped back a bit. She looked very shy and a bit frightened wich makes rusty feel a little bit bad about that and even more about what he planned to do so he decide to wave his hand friendly and talk to her.

Hem! Hi! Im sorry did I scare you? he said to the girl with an embarrassed smile.

The girl was to shy to answer him and just nodded. Her shyness and her face was simply adorable and some very pure and lovely feelings about her started to appear in the otter's heart. He wanted to make a good impression and start to slowly approach her to keep talking.

Im Rusty! I come quite often here! It is very rare to see people around here, I never meet you! What's your name? He said with a bright smile. The girl smile him back and said in almost a whisper : Im Mizuhiro! But I prefer Mizu for short. Im sorry im quite uncomfortable with new people.

Everything she said, her cute reaction, her lovely lavender fur and thoses incredible electric blue hair and eyes was just too much adorable for the young otter to prevent him from have naughty thought about her and in his mind a change of plan operated. At first he wanted to scare an intruder for have fun but this girl hiding in the water is just too damn cute and it wakes his natural needs, so he started to plan something to allow him by "accident" to grope her. Poor girl look so shy and pure and it will be almost impossible to do it without having her hating him. 
Rusty didn't want her to hate him cause she was so marvelous and cute that he would totally become straight for her. But first things first before planning any move, he must get rid of his erection and since the girl hid her body in the water only her face left. But since Rusty started all the thing he can do with only that it took a while before getting soft again. During that time he talk to her to make her confident, telling her jokes and talking uneasely about girl conversation topic. But his heart skip a beat when she told him she prefer video games, junk food and sci-fi movie.
Was she a nerd girl or something? She was just perfect. She likes video games and dude stuff like he does. That was weird, Rusty always pictured himself end up with boy cause even if he likes girl he got that slight preference cause love is always easier with a dude but now... 

His lips, hands and body started to shake like he was freezing or something. Even him doesn't know how he didn't jump at her and grope her perfect body like some kind of perverted freak. Rusty started to loose himself in sorrow and doubt, at any moment he could pounce and grab her to embrace the most amazing and cute girl he ever seen but her shyness and her kindness were just too pure and he knew the moment he would do that, she will get scared and reject him, calling him a freak, a pervert or even worse and the lil otter mind feel so bad about that especially because she seem younger than him and unaware of naughty stuff.
On the other side, the cat girl noticed Rusty inner torment and his shaking body. Mizu know how to recognize someone in pain and her feline eyes, by seeing that sad otter started to get tainted by sorrow. While Rusty was lost in his dilema and seemed to suffer about it, she get up and walk to him to give him a reconforting hug but trip and fall on the way. Rusty brain immediately clicked and he try to catch her but he trip on the way too. During the trip, Rusty try to catch the girl hips and the cat tryed to catch the otter's shoulder and they end up recovering their balance in an akward position cause Rusty face was pressed on the cat lap.
At first he thinked he fall face first on her breast but he soon realise that his face was pressing against a pair of huge smooth marshmallow and he rise and step back surprised. 

Wha..t! Man! You're a dude!?

The cat a lil bit embarassed and blush answering him :

Well I am but in my cute own way.

Rusty couldn't belive it, she was a he. But something was wrong, and he ask the cat to stand out of the water and he saw that the cat swimsuit was stretched out to the limit by a huge bulge. How can someone that cute can have such a huge genital set. Even if the cat was wearing a swimsuit, it was so tight that Rusty could see all the cat male set squeezed in and it was arousing as hell for him. He tought he couldn't love her more but he was wrong and the little incident turn his otter bits hard as rock in his swim short. Then, he see Mizu getting close to him and hug him. It was too much for him and decide to fufill he's primal urges by kissing him on the lips.
Since he doesn't resist the kiss, Rusty press his iron rock hard lap against thoses huge fluffy marshmallow balls hidden by a damn swimsuit. Rusty wanted, no... needed to see, to touch it, to smell it, to loose himself in that soft fluffy heaven so during the kiss he put a hand on the cat shoulder and slip it under the swimsuit string to make it slide on Mizu's shoulder. When Mizu broke the kiss, saliva were still connecting his lower lips with Rusty's who started to grope the kitty's balls. Mizu didn't dare to move and said with the cutiest voice ever heard :
Please! don't it's embarassing!
While he said that, he licked sensually Rusty's round green ear. His word maybe said no, but all he's moves, his voice, every message his whole body and mind send was telling Rusty to rape him as hard and rough as he can. The otter kiss him again and keep groping him completely lost in his own passion. The kitty's monstruous bulge started to swollen and get more and more squeeze in his swimsuit, then Rusty pull it down to free the cat body from this tight prison. The reward was more amazing than all he could imagined. The cat femboi had the cutest genital he ever seen. Between thoses white cream colored fur intimate orbs started to grow a huge furry sheath of the same color.

Excited by what may pop out this enormous sheath, Rusty press his belly on it and after sniff the lavender smell of the cat private part, he started to rub it. Mizu immediately blushed hard red as a reaction and beg with a very lewd voice.

Please stop I don't want to! *moan*

While he said that, his cat tail gently scubbed the otter's balls for let him know with his eyes and moves how much he wanted more and Rusty was more than willing to give it to him. He then press and rub his body harder on the cat while deeply kiss him until a ice blue equine shaft pop out of Mizu's sheath. Rusty stare at it like it was the holy grail. It was so huge, throbbing and beautifull. The cat meow and moan in uncontrollable pleasure and curl his tongue in Rusty's mouth. Overwhelmed by the sensation of that huge equine boyhood, Rusty broke the kiss for start to lick Mizu's shaft.

"NOOOoooOOOOh! Please stop it's too sensitive!" moaned the cat without a single struggle move.

While kissing and licking Mizu's shaft, Rusty started to play with the cat sheath who got a very pleasant touch. While the cat penis was still soft he comparate it with his own to see how big it was but there was no possible match cause that huge equine piece of meat was bigger thant his tights. Wanting to see how does it look with the hard on, Rusty tryed to suck on the tip. After some effort he manage to do it but it was hard to breathe and his throat was to tight to go deepthroat. The cat just squeal in pleasure while Rusty suck his tip and started to get hard. When the cat started to get hard, Rusty couldn't take it anymore and take it out off his mouth with a loud gasp.
He kiss Mizu again, grab him by the hips and lift him. Thanks to the water, the cat was easy to lift so Rusty could keep the cat' head out of the water when he started to probe Mizu's tailhole with his otter's rock hard member. Suddenly the otter's eyes widened cause his private member went in with no effort like the cat hole sucked his bits in and more surprising the cat's inside was damn tight, so much he let a moan out. At this point Rusty didn't care about the what or the why or anything else cause his wildest instinct took over his mind as he start move his hips. The warm feelings Rusty felt was overwhelming and the tight sensation was very intense and yet he start with fast and deep thrust.
Without any warm up Rusty initiate a rampage on the cat boypussy by slamming his bits as fast and deep possible right after penetrate him. Rusty was like possessed by an unstoppable lubric urge. His lap was slapping on the kitten butt merciless and the water noise caused by their inter-chocking flesh aroused him even more like it was even possible.

On the Other side Mizu beg him to stop with the naughtiest voice ever heard. His supplication sounded like encouragement, he even kiss Rusty on the lips and dip his tongue inside the otter's mouth for erase all guilt or misunderstanding in his mind. Mizu equine cock throbbed more and more and Rusty could feel the cat heart beat by pressing his cheek on that lovely monster. At a rate like this, normally, Rusty couln't last long but for some reason he didn't cum yet and most weird, he wasn't even close to. The feeling was a pure bless so he keep pounding the cat without any restriction.

The cat was squealing out of pleasure and Rusty, nimble a bit his neck, but all pleasure wasn't enough for the other. He needed more thrust power so between two pant he whisper to the cat to hold on to him in order to carry him near the border of the lake. There, he turn him around to take him on doggy style. He mount him and slam his bits the deepest he can to chain with frenetic moves. The cat pant, moan and after some moment yelled : Please stop im close! I beg you! Stop it im gonna cum. His voice sounded more sincere but Rusty belived it was his kink who talked like it did since the begining so he keep banging him restless.

At this very specific moment, Rusty was on the edge of climax didn't listen anymore and made a final thrust who made his bits squeeze Mizu's boypussy G-spot. A huge white goo geyser bursted out of the cat's equine cock and turned the blue lake into a salty withe swam as Rusty filling his lovely kitty butt with warm otter love juice. Amazed by the quantity of cum the cat made, he dip his hand in the lake for taste it.... It taste like lavender ice cream and salt. Mizu was purring loud, Rusty pet his back and slowly take his dick out of him.

Rusty was exhausted and pant : Wow! Dude! You got the most amazing butt ever!

Mizu then gently and softly give a punch on the other shoulder : I told you to stop you idiot! Now because of you my mom gonna punish me! Jeez! because of you I won't have time to play video game before go back to school!

-What! What the heck! Dude! Not fair! You sended me contradictory message all long! How could I've know. Said Rusty surprised. The cat sigh and kiss him on the cheek.

-I know! Im sorry! But I worked very hard to get my mom buy me "Super Zombocalypse VIII" and now with what i done to the lake she gonna punish me for sure!

-What! Dude you got "Super Zombocalypse VIII" I searched everywhere to get it but evey copy have been sold out!

-Yeah and thanks to you made me cum my mom will punish me and i won't have time to try it until next week end!

Rusty didn't think twice before saying : "If i take the blame would you let me tag along and have a 2 players game together?"

Mizu smiled at Rusty and said : " If you take the blame then i'll even let you be player one!"

- Neat! Then you have a deal sweetie!

Mizu giggle, put his head on Rusty's shoulder and purr to show him he's not mad anymore. Rusty sigh and try to relax before a loud angry feminine scream startle them :

"What the damn heaven is going on here? What have you done to the lake?"

The two both turned over to see a pink haired goat lady angrily staring at them.

Mizu quickly said with a shivering voice : "It's not my fault!"

"He's right! It's my fault!" added Rusty right after to help his new friends.

The goat lady keep staring at them and Rusty started to feel cold sweat on his neck like her eyes was piercing his own soul. Then the lady smirked and said :

"Is that so? Well you're both in trouble You for making my son waste the lake before i get in and waste my precious food and You Mizu for lying cause I can hear it in your voice. You light him up don't you?

Mizu blushed hard and nod, and the lady smiled even more adding : "Then I shall punish both of you for your behaviour"

Right after finished her sentence, she snap her finger and everything goes dark for our two heroes.