I am not much of a writer but i write. Please excuse me for my writing. Its not the best but i try to make things a lil hot. This "Guest/unnamed guy" is basically "You" or the fursona or character. 
--------------------------------------------------------------------------------------------------------------
Rubberkitten, a Large Muscle, big Pec'd, space Leopard feline that is on your planet who had a mission. He completed it but someone saw him, and was facinated, and shocked in who he is seeing. Being Gay himself, also a Furry, he couldnt help but wish, and hope this guy is friendly, and not dangerous. He seems this big feline doesnt look very mean or aggressive. This feline is in his City, looks like he is looking at something like a screen, checking something up like if he were finishing something up. The guest tries to get closer, he got a good look, and noticed this Muscle Bound Leopard is......very tempting! Very big pecs, swollen nipples, bubble muscle butt bigger than any human or anthro here on Earth. It aint hyper big but hes got back. His tail swirls around like he is thinking. You try to stay quiet but suddenly Dogs start to bark over near him. Rubberkitten's ears perk up, and look over. 
The guest goes, Oh shit he saw me! Oh shit, oh shit! I hope he doesnt kill me! says to himself but freaked out. Rubberkitten notices, scans that area, Ai scanned a lifeform but is not a threat. Rubberkitten smiles, and senses curiousity. The big pec'd feline Teleports using his Portal ability, right behind the fella. 
Oh fuck! says the sneaky bystander, Scared but still hopeful on his wish. 
So you gawking at something you like? says the 6'10 Muscle Pecs, nipple perked Leopard. From upclose, the reflection from the Light, from the Lightpoles, the guy can fully see how explicitly dressed the big Leopard is. A bulge very large, and tight. Can see his cock at least 1 foot in length but just bulging flaccid in the tight pouch. Thick arms, cut abs, huge thick, muscle thighs, the suit looks almost polygon, honey comb pattern but almost can trick one into thinking its Latex but upclose you can tell it must be solid. 
Noticing your cock is taking shape inside your pants, the Alien Feline comes up with an idea. He asks, Have a place where we can go? A home? An alley? says, the space rawr named Rubberkitten.
Uh...yeah. I have to be home soo....maybe my place? says the random mysterious, curious guy. 
Sounds good! says Rubberkitten.
Rubberkitten picks the guy up, props him on his thick, hunky shoulders. You looking down, you see this cut, thick, muscle, veined, sweet ass. You can even see his thick tail swishing around, and something pushing against the rubber as if it were his pucker pushing against it.
The space leopard totally notices it, and chuckles at the guy. He punches a warp, and both jump in. 
On the other side he is at the guys house, inside his room. The unnamed guest is still shocked at what, and who he has over. Cant believe it. This tall, bigger than a bodybuilder, a body that looks like its made to just do things to it, his nipples are huge like he pumped them but no ordinary Human or Anthro would have something like that. A  body where you would almost be too embarrased to be seen in public with because how his body is so built, and looked explicit but its his natural body. 
I dont have much time so lets get down to business. I know what you been wanting, i can smell, and sense in what you are thinking, and feeling. My suit can also detect it, says Rubberkitten. Its ok, you dont need to hide anything anymore. Smiles, with a grin but to influence confidence in the guy.
S-sure, what do you have in mind, says the unnamed guy. 
Rubberkitten walks up, chuckles wearing his Nano Ai-suit. The suit makes sounds like energy but then its quiet. You cant hear anything but than again its like a sound that is silent. Looking up close you see energy darting through the suit like circuits. 
 He approaches up to the individual flirty with his bulge nearly bursting from his rubber pouch. He throws the guy on the ground but just enough to get him safely on his floor, yet unharmed. Sits on , chuckles, rubbing his firm, emormous pecs. He climbs over the guests body, sitting on the bulge, grinning, giving the guest a hint what hes gonna do. Rubberkitten rubs his pecs, pushes them up, veins thickening just by touching his nipples, he twists them, and his bulge grows, creeks, stretching the rubber brief, a boner just thrusting into the rubber garment, and snaps off, shooting across the room in pieces. He unzips the lads package, sits, and slides down the eager, and excited erection. Its quite big, and the enormous pec wielding beast's butthole is wet before even lubed. He works, and squeezes over his throbbing cock, the view from below, looking above. The guest watches Rubberkitten's pecs bounce, nipples throb, and leak. Pecs firm, big, and nipples swollen, the said pecs bounce around, squirting pre uncontrollably. The pec endowed leopard space cat moans, the guy below watching it all, watching the leopards dick so hard it refuses to go any lower than it needs to bounce. Just swirls of pre, swirling around in the air like wet strings of honey. His sweet pucker, sucking on the guys cock, making loud wet noises, slurping, cum farting, giving the guy a great show, and what he was dreaming of having. Never thought he would have such an experience, especially someone out of this world. He still cant believe this was even happening. Like if this were just a lucid dream. A dream that can be the only possibility of anything like this happening.
Oooohh! Groans the huge, nipple swelling, pec space cat. 
Rubberkitten bounces harder, like hes abusing the guys cock, squeezing his own pucker, feeling the fellow is close. Rubberkitten moans, the slapping of his butt cheeks echo in the room. If there were roommates, they would wonder what is all that slapping. Its loud enough. The guest/unnamed friend gets close, RK hops up on his plantigrade boots, rides hard, his muscle veined butt, the guest watches his pucker wet, and stretch as he pulls out, goes back in, hard thudding, slapping, RK is getting close himself. His nipples grow a lil bit more, as his guest is about to get close. Guest is squirming, making noises, OH! OH!! Rubberkitten knows its ready, he rides hard, the guest cant hold on anymore. He grunts, growls, and spurts his hot spunk. He looks down to see whats happening under there. 
He notices the slapping of his semen, churning like butter. Rubberkitten Cums, Growls! Moans, and his nipples squirt, and swell. His pecs get a little bigger but just a hair. They vein up, his cock squirts at the wall, reflecting off of it. Cum turning into foam, almost like it was lotion, the Papping sound of his rosebud, hitting his prostate, Rubberkitten cums once more, shoots all over whats in front of him, cum deep inside himself, he gets all wet, and messy. 
Rubberkitten gives a smooch on the nose to his guest, chuckles with a grin, almost dream like, stands up observing the mess. 
Rubberkitten says, oh my.... what a mess. I gots to go sir. I hate to leave after sex but I have a mission to do, and i have to get to my ship right away. But i had a delightful time. *growls with a flirty smile*. Rubberkitten walks to the window, turns around to the guy, gives a wink, and a smile, and beams to his massive ship that seems to appear in the sky out of no where. No one or even the countries Military wouldnt be able to detect it. 
 His suit made of high tech nano is Ai, his Ai has beamed him from, and to his ship. It looks huge. With cum dripping down the thick. bodybuilding leopard, he punches a hot pinkish portal, and jumps in. Just as fast as he left, the lights are gone from the ship, the sky is star lit like nothing even happened. 
The guy looks at his window while still on the floor, he is still thinking to himself whether this happened or not. But hes still laying on the floor covered in his own mess, and the wall behind him is covered by the space rawrs cum. Still fresh. Thats a lot of cum, thinking to himself...
The guest was surprised, and didnt mind cleaning the mess. One of those weird, odd nights where you know this may be the only, rare, and once in a lifetime night of some hot  but interesting sex. Knowing your spunk is inside that big cumdumping feline, you know he has a little bit of yourself in him. Cant complain here, he says to himself. 
His roommate comes home, who knows his friend faps, and does play sometimes. He comes home from work, walks in and the funniest expression, he stops and says, oh....its one of those nights? 
Guest looks at him and says, ehh....yeah you can say that. 
Well clean up, i bought some food, says the roommate holding a big bag of fast food.
Thinking to himself, he said he has a mission to get done. What mission is there? I wonder...
Knowing he is out there somewhere, cum dripping from the guys sweet honey pot pucker, the space rawr named Rubberkitten is gone out for work, his missions, saving planets that needed to be saved, space stations out in other Galaxies, and planets, just another job for the  big guy, but who knows? 
Maybe they will cross paths again.... The End?
See you on your planet.....*moooann* swishes tail* >;3