FSE

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There was a loud banging on the door of Dr. Memphis, who slowly walked over towards the door and opened it to see a panicked Francis on his front steps. "You were right!" He said as he pushed his way into the house with the older gentlemen watching him pass by. "Oh my god, it's so much worse than you thought Dr. Memphis."

"Hold on son," Dr. Memphis said as he put his shoulders on the hyperventilating guy to try and calm him down. "Let's go into my home office and talk about it further, I was just working on something that needs my attention so I need us to move into there."

Francis seemed to relax enough to nod and the two made their way into his office. As Dr. Memphis led them to his desk he motioned for the younger man to sit down before he did so on the other side. "Now why don't you go ahead and take a drink and tell me what you found," he said as he took a bottle from his desk and poured some of the amber liquid into a glass before he set it in front of Francis. "Did you manage to find Derek like I asked?"

"I... I don't know how to say this,.." Francis said as he hands trembled while he held the drink "I went to Derek's apartment but no one would answer, so I took some liberties and tracked Derek's phone. That got me to the university... so I wondered around a bit and as you suggested I tried to find out any unusual activity that was happening in the area. With that information I found a dorm party that had just sprung up and decided to investigate. What I saw..."

"Go on..." Dr. Memphis said as he leaned forward with a concerned look on his face. "Go on, take a drink if you need it."

"No... I'm fine I think," Francis replied as he steeled himself. "At first I thought it was a party gone wild and some sort of gimmick with people wearing animal accessories, but as the night went on they began to have sex with one another and then I saw him. It was like a lion dude, this hulking beast that just walked out with this huge cock. There was a wolf guy behind him too... and even though they were definitely not human I just knew I was looking at Derek."

Dr. Memphis sighed and stood up from his desk and slowly walked around to put a hand on Francis's shoulder. "I had feared something like that was happening when he wouldn't return my calls," he said as he patted Francis on the shoulder. "I believe that Derek is infected with an insidious virus that's supposed to be a fast-acting gene therapy that would give people superhuman strength and agility by mutating specific genes. Unfortunately it appears that the viral aspect wasn't quite worked out and from what you said it's spreading faster than previously feared, are you sure you don't want to have that drink?"

"No thanks," Francis said with a hint of annoyance. "Doctor, what the hell happened? Did the lab create something this terrifying and how did Derek get infected?"

"Well the last question can probably be answered the easiest," Dr. Memphis said as he leaned down behind Francis. "The reason this got out of control was because I was watching the wrong person due to you moving the coffee caddy without my knowledge and I handed Derek the wrong drink."

There was a moment of pause from Francis as his brain took a second to process the information he had just gotten, but before he could turn around and face Dr. Memphis he felt a powerful arm suddenly wrap around his chest from behind the chair and pin him there. "A year and a half of planning down the drain because you wanted the coffee with more whipped cream on top!" The scientist shouted as he continued to pin the other male down with surprising strength while the other grabbed the drink and began to pour it into his mouth to force him to swallow it. "When you didn't start changing I looked back at the security footage to see you switch the cups on me, but by that time it was already far too late for me to find Derek again. Now it's too late to contain and soon this is going to go public, and eventually the epidemiologists will come and trace it back to Derek, which is problematic because I already set you up as a brat who stole from the lab and accidently infected themselves. That part I'm about to resolve!"

Francis continued to choke on the liquid being forced on him until the glass was empty, then finally he was let go and Dr. Memphis stood back up to straighten up his lab coat. "Wh...what did you do to me?!" Francis shouted as the researcher sat back down, feeling his stomach start to turn as his insides began to feel like they were on fire. "My stomach... it feels like its tying itself in knots!"

"I merely gave you a concentrated dose of the serum that Derek got," Dr. Memphis replied calmly. "I needed to accelerate your progress so that it looks more likely that you are the actual patient zero in this potential epidemic. Of course there is an antidote to reverse it that I stashed in your house but of course you'd have to run there before the changes finished and-"

Francis quickly stood up and knocked over the chair as he heard everything he needed, stumbling back towards the door frame before he got more sure footing. Sweat could already be seen on his already wet clothes as he could feel his insides continue to shift, whatever virus he had just been given working quick. He could already feel his thoughts begin to grow hazy and it became harder to think as it infected his brain, but all he did was focus on getting back to his place. If he could get the antidote he could change back... he just needed the antidote... the antidote...

Dr. Memphis watched as the corrupted male ran out of his office and eventually his house, a small smile crossing his face while he watched the panicked male leave. He had always known that Francis was the dumbest of his interns and for him to think that there was a cure for something that altered a person on a genetic level just proved it. It was unfortunate that he hadn't gotten the original coffee that he had tainted, then he would have gotten one more test subject and one less idiot and especially since he had accidently tainted one of his favored researchers. At this point though he had more important matters, like trying to salvage his research before Francis, or another one of the infected, exposed what was happening in this city while most slept...

*********************

Lond panted as he walked down the hallway of the condemned building where he had last left his two criminal friends, leaving a wet hand print on the peeled paper as he walked by. He had been sweating like crazy only a few minutes after he had left, to the point where the tests he had promised to do remained forgotten in his car. As soon as he had gotten to his place he had showered three times to try and relieve himself of the profuse heat that he experienced, and on the third time around he noticed that he had started to grow a layer of fur on his chest and back. While he knew that should have been enough to send him to the hospital the only thing he could focus on was how cool the bright blue fur looked on his body.

However it was also enough to spur him to try and figure out what happened to Marcus and Tom, especially when he remembered that Marcus was experiencing a similar growth on his arm and thighs. He almost had two accidents on the way over as his vision began to blur, but mostly it was due to his thoughts continuing to go back to the other two males. More specifically he kept thinking about the mutated cock that Marcus had shown him, how it glistened in the light and how thick and girthy it was...

Even as he stood there only a few doors away Lond had to stop and adjust the groin of his pants, though it had been growing tighter around his member even before he had got himself aroused. He hadn't checked on it yet but he knew it was bigger, probably at least a few more inches and thicker as well. At this point between the extra growth and his arousal he could hear the tines of his zipper begin to break at the tines from the stretch. It was to the point where he was in danger of flopping out and being lewdly exposed but something in him continued to push him towards the apartment where he hoped his friends were still there.

Once he got close to the door he could still hear his friends inside and the closer he got the more he thought that they were arguing about something. Since the apartment was rather old the door frame was rotted enough that the lock was essentially useless at that point. With just a bit of weight thrown into the door itself and it swung open easily to reveal the two inside on the couch in the living room. Lond's mouth opened wide when the two males hadn't even looked up to recognize his presence as Marcus continued to pump his cock in and out of Marcus's rear end while he laid on his back.

Marcus was covered from head to toe in black fur to the point where Lond couldn't see any human flesh left, save for a bit on his face where it hadn't yet formed into a very feline muzzle as it even stuck out of his forgotten bandaged arm. His green feline eyes were wide in lustful abandon as his muscular form was now framed with a long feline tail and his feet had morphed into large paws as Tom chewed on his pointed ears while they had sex. While Tom was not as far along as Marcus was but he still had a lot of fur on him, his pattered with black and white stripes while one of his ears was already on top with a rounded feline version while the other was not mutated but covered in fur. He also had a half-formed tail and muscular rear that Lond couldn't help but stare at as it bobbed up and down with each thrust.

It took Lond moving several feet into the apartment before the two finally stopped and noticed him, their eyes shining as Tom pulled out of Marcus. Their eyes seemed glazed with lust as their naked bodies moved towards him and began to paw at his clothes. "What are you guys... doing..." Lond said as he held up his arms as they got up to his body and began to slide their hands up underneath his clothes to undress him. "Guys... this definitely doesn't seem right..."

Neither of them seemed very interested in talking, or from the way they looked at him he wondered if they even good. Something had turned them into monsters and it was clear that it was doing the same to him, but the second that they began to rub and paw at him he had been ensnared in the same lust that the two had been in before. He could only imagine that Marcus had done the same to Tom as his infection progressed and Tom had only been partially infected like Lond had. His mind's eye played out that the black-furred feline had slid up to the other male like they had done to him, Tom trying to push away the other male's affection while fighting desires of his own, finally succumbing when their lips met in a sensual kiss.

When Lond came back to his senses he found that Marcus had imitated what he had just thought about into real life as the feline's muzzle pressed onto his lips. At the same time Tom had started to get him undressed and when Lond tried to move away so that the feline couldn't reach the fly of his pants he heard a low growl that caused him to back his hands away. As Marcus continued to kiss him deeply Lond moaned as he felt his pants get pulled down around his feet and shuffled away. As Tom's hands rubbed up and down his legs he could feel that the fur, likely blue or white like the rest of it as Marcus's cock throbbed against his flat stomach that began to mold into a six pack even as they made out.

The two former tough guys lavishing attention on his body rather emboldened the medical student, to the point where he began to feel himself growl slightly as Marcus broke the kiss and licked down to his nipple before rubbing the sensitive flesh with his tongue. "I wish you two were like this before," he said with a huff as he wrapped his fur-covered arms around Marcus's head and pushed his muzzle harder against his chest to get even more pleasure out of it. "I think we'd be much better friends if you guys did this to me."

He looked over at the moldy couch that the other two males had been making out on and frowned. This was no place for them to consummate their new partnership and he felt a newfound sense of leadership after being fawned upon by the other two. With it being dark outside and the fur that covered all their bodies they could go out to his car hidden in one of the alleys, and from there he could drive them to his place. Already his erection throbbed with approval at the thought as he led his two boys back towards his car, leading them by their own cocks as they eagerly followed behind them.

********************

William waited with his other four friends in the apartment of their friend Josh's home, sitting around his couch as they waited for their friend. Like the others he wasn't sure why he had been called there, especially when they had planned on going out the day after so that they could prepare for the big game that was going on the day after that. As they continued to wait for Josh to come out they watched a different sporting event on his big screen television. Eventually Josh came out with the drinks he had been mixing or the beers that they had wanted, and then once he had gotten them everything he went over to turn off the television.

"So I know that we were going to go to the bar tomorrow and talk about our plans for the big game tomorrow," Josh said as he continued to stand there in front of them. "But right now one of our own has a big problem that I think we need to address it here. Now Allan called me yesterday and showed me what was going on with him, and I really think we're going to need additional help on this which is why you guys are here. "He's going to come out now, just... try not to freak out too much alright?"

The others just nodded, glancing at one another in question as Josh once more left the living room for about a minute before he came back. This time however he wasn't alone; the creature that stood next to him was at least a foot taller than Josh and with enough muscle to be a professional linebacker. Everyone stared wide-eyed as the large, hulking man adjusted the speedo he wore, the only thing that covered the orange and black striped fur that covered the rest of his body. William's gaze drifted down the mountainous pectorals and eight pack that the creature sported down to the bulge of the speedo, which seemed to grow bigger with every second that he stood there.

"You're pulling our leg," one of the other guys said as he sat there on the couch. "That's some sort of costume right?"

"Doesn't look like any costume I've ever seen," another said as he began to back away when Allan exposed his sharp teeth inside his muzzle. "Looks like some mad scientist bull in my opinion."

"Guys!" Allan said as he held up his hands. "Seriously, do you know what it took for me to get him to expose himself to you guys?"

"That's an understatement," one of them said as they held up their hands to shield their eyes from the growing bulge in the tiger-man's groin.

"He grew out of his clothes and obviously we can't find anything to fit him," Josh shot back. "We just need to help him out, he's one of our bros and something happened to him. And before you ask he doesn't want to go to the hospital, we've all seen movies and know what happens when someone like him comes in."

While the others agreed with their friend's sentiment William couldn't help but notice something peculiar between Josh and Allan as they continued to stand there next to one another. As the only gay guy of the group he was queued in on the subtle flirting signals that two guys send to one another while in the presence of their straight friends and he was seeing a number of them pass between the two. Though it wasn't any of their business it was strange how much Josh was leaping towards the aid of the transformed male, especially since he typically was the brashest out of all of them. Still he put it aside as he heard the others discuss what they were going to do, which was everything from conspiracy theories to just letting him be the way he was and try to pass it off as costumes.

"I have a question," the guy next to William said. "Can he... talk? I haven't heard him say anything since we started to discuss and it's starting to freak me out, like he's just waiting for the perfect time to pounce."

"He does have difficulty communicating with words it seems," Josh explained. "But he really is just a gentle giant. If you don't believe me come on up and have a pet, you'll not only see that it's real but he's really just a big sweetie."

The last statement definitely struck William as odd since he had never heard Josh speak of anything like that, not even when he had a girlfriend who owned a cat. As the others looked at each other before their curiosity got the better of them and getting off the couch William joined them, but his attention was focused more on Josh than Allan despite Allan being the seven foot tall tiger person. The others however remained completely fixated on the furry male in front of them, and after a few minutes of jostling back and forth one of them finally had the guts to take a hand and gently press it against the fur-covered chest of the male. When Allan did nothing but let out a little growl of contentment all three of them grew bolder and ran their hands through the thick fur.

"Hey Josh," William said after he had seen enough. "Do you think I could talk to you in private for a second while they man-handle the man eater over there?" Josh agreed and walked over to the side of the hose with the other male until they were out of earshot for William to start talking. "Are you fucking him?"

Josh was clearly taken aback by the question, though it was more surprise at the bluntness then at the context. "I..." the guy said as he looked around. "Why would you say that?"

"Well quite a few things really," Josh said as he crossed his arms. "First of all there's the fact that in the time that you thought we were focused on Allan you had looked down at his butt at least half a dozen times. Then there's the fact that you don't touch him, which normally would be nothing of concern except you make a conscious effort not too. That and the fact that you have some of his fur on the back of your neck probably didn't come from you brushing him."

When Josh reached back and brushed against the patch of fur there William's eyes widened in realization. The fur wasn't transfer from Allan to Josh, it was actual fur that was growing on him. It put things more into clearer focus now, how even though Josh was clearly sweating he was wearing a long sleeved sweatshirt and sweatpants along with socks. William glanced over and, seeing that their friends were now preoccupied with what the tiger man was packing with one of them peeking in the speedo to see, grabbed Josh by the arm and led him away from the rest and into the bedroom.

It was there William told Josh to fess up on what was going on, and that was when the other guy finally broke down and told the whole story. Josh explained that he had gotten the call from a panicked Allan and went to his place to find him in a semi-transformed state. At first he had the same idea to go to the hospital but Allan was having none of it and after a lengthy search to try and figure out what happened it ended up with the two on the couch watching a movie. Josh wasn't sure what happened after that, by that point Allan was almost completely changed and down to a pair of skimpy underwear and he found himself pressed against his furry body in a way that guy friends would never be.

As he went on to say that after a while things progressed further he went over to his dresser and took one of the Kleenex there to wipe something off his nose. William was too stunned as Josh went into graphic detail about their sexual encounters as he wiped off the make-up he had used to cover the black skin that was on his puffy nose. "You got the same thing Allan has..." William said as Josh continued to strip down now that the cat was out of the bag, revealing his fur covered arms and chest when he pulled his top off. "You knew this thing had the capability to spread and you exposed us all anyway?"

"You don't understand," Josh said as he continued to strip down, showing off his tail as he pushed down his pants from his fur-covered thighs that even as they spoke seemed to creep over the untransformed human skin. "After Allan licked my face and we began to get closer I realized that he wasn't cursed or ill in any way, he had been given a wonderful gift... a gift he shared with me. This is a gift I want to share with you all too."

For the first time since he had gotten alone with the other male did William suddenly realize that he could potentially be in danger. Josh's transformation had progressed pretty far and he looked a lot like the tiger outside, save for the orange being replaced with white fur. The already athletic male was also far more muscular than he was before, like he had been living at the gym as they flexed them in his direction. As Josh gave William a fanged grin and began to approach him, there was only one thought that went through Josh's mind while he stared at the naked male.

Josh was hot as hell.

William felt betrayed by his own libido as his brain screamed at him to run before he got infected with whatever he had while the growing erection in his pants told him to stay. In the end even if the voice in his head won out it was too late, Josh had closed the distance and William was met with a passionate kiss that backed him up against the wall. For the first few seconds neither of them were concerned with anything else but the mouth of the other male, and as the tainted saliva of Josh entered into William's through is tongue he began to calm down a bit now and their fierce kissing became more passionate. The deed was done, Josh's infected mind thought, now it was time to enjoy the fruits of his labor.

Fur could be felt pressed against William's body as the other male began to strip him of his clothing, the two still kissing as the already naked man shed the clothes of the other. Even if William wanted to stop this from happening, which as soon as their lips met he knew wasn't going to happen as his cock throbbed hard against its denim prison, the partially transformed tiger man was very insistent on it. By the time he dropped down on the sheets of the bed his underwear was being ripped off his body, leaving him completely exposed as that striped tiger dick pressed against his flesh. It was larger than average size, William thought as Josh reached over him to grab a bottle of lube that he normally used for the girls he brought home, and he wondered if that was just naturally his or if the transformation he was undergoing had done that too him again.

The transformation... the though echoed in William's mind as he laid there on the bed while Josh began to lube himself up. He knew at this point that he was likely infected with whatever it was that got Josh and Allan, perhaps it had been that way ever since he opened the door and stepped inside. At this point he was resigned to his fate and knew that if this was going to be his last night as a human he may as well enjoy it, even if that enjoyment was a romp in the hay with his formerly straight, formerly human friend pushing his cock into him. If all this did was turn him into a gay tiger guy well... there were worse fates out there for sure.

At that moment though the only thing that went through his mind was his anus getting stretched open as Josh took the head of his cock and pushed it past the tight ring of muscle that hadn't been prepared nearly as well. Thankfully Josh wasn't so lost in the lust of the moment that he was able to stop when William told him too, letting him catch his breath from the sudden insertion while his entire body shook. Once the initial pain had passed and he was given time to settle down his new lover was allowed to continue. As they went slow it seemed like whatever was plaguing Josh had a secondary effect on his body as a tingling sensation began to spread through his stomach and quickly made it easier to allow the other male to push his cock into him.

"I did not know what I was missing," Josh said with a fanged grin. "I know that I was into women before but now, thanks to Allan, I can appreciate this so much more." Before William could say anything the other male began to lick up his chest, focusing on the nipples to cause him to squirm as the tips of clawed fingertips dug gently into his thighs to raise up his legs. As he reached up his hands and ran his fingers through the thicker hair that he hadn't noticed had changed on his friend he felt something underneath that caused him to pause before he rubbed his fingers against the furry, rounded ears that caused Josh to writhe in pleasure and push deeper into the male beneath him.

As Josh began to thrust William looked up to see his face squeezed shut in what he had thought was the mutually shared pleasure between the two. That assumption was quickly shot down as he saw his friend's mouth open like he was yawning, only as it continued to remain open it began to stretch outwards. It was like someone had grabbed him by the jaw and nose and was pulling on it as his lips turned black, removing the humanity that he had managed to retain as his voice dropped almost an entire octave. All William could do was watch the transformation take place, at this point he had the furred hands of his friend on his shoulder to brace him and his cock buried deep in his backside that now pumped in and out even faster and deeper.

When Josh snapped his head back and forth he had a proto-muzzle, not quite the same as what Allan sported but definitely not human anymore as the changes pushed the male over the edge. William's breath caught in his throat when he felt the hot seed enter into his body, jet after jet of the tainted load filling his bowls and further making sure he would share the same body as the one on top of him. The feline gave a few more pumps one he had finished and then laid there for a while, keeping his girthy cock inside the other male as he used his new muzzle to nuzzle against William's neck. When he finally did pull out William quickly turned to get up to head to the bathroom to see if any of the changes had affected him yet.

"What do you think you're doing?" Josh said as he grabbed William by the waist and pulled him back down on the bed. "Now that you're properly seeded It's time for me to feed..."

William wasn't sure what that meant and felt a slight pang of fear as that proto-muzzle began to drift down towards his own erect member, which had been throbbing ignored against those fur-covered abs before now. The human felt his body begin to sweat as the half-tiger hybrid male inhaled the sent of his groin before he began to lick the turgid flesh back to full mast. It didn't take long, the residual pleasure from getting reamed from behind still echoed through his body as William began to suck on his member. In the back of his mind William managed to think above the thick cloud of lustful pleasure to guess this is what he meant by feeding... which meant that they fed on cum? More specifically tainted cum?

After one particularly long and drawn out suck it didn't matter to him anymore, his focus brought back one hundred percent on the tiger guy bobbing his muzzle up and down on his dick. It was a surreal sight but hot none the less, like some sort of bizarre sex cartoon where the anthro hero is a tiger guy and he was a human. Even Josh's tail wagged about in the air as his sucking grew faster, one his hands cupping against William's sack in order to draw out the contents within. It wasn't long before he had done so, William gasping as he came hard inside his friend's mouth.

Once Josh had made sure he had gotten every last drop out of the human on his bed he said that now he was able to get up and go. As William sat up he felt his already hot body begin to sweat, which Josh said was normal as he gave him a bottle of water to help with the symptoms. Once he was past that stage though, the changing male assured, that was when the fun really started and he would get his fur and other such animalistic accessories. Of course once the orgasmic high died down William remembered and asked about their other friends, but that just caused a smile to appear on Josh's muzzle and said that in all likelihood that had already taken care of itself.

When they got back to the living room it turned out that Josh's prediction was spot on. Not only had the speedo been completely shed by the tiger man but the clothes of the other three had been discarded as well. One of their friends, who had been the biggest of their group until Allan's virally induced growth spurt, was behind the tiger rubbing his chest while thrusting his cock up inside the tiger male's tailhole. The other two were on their knees in front of Allan, using their mouths and tongues to suck and lick on the thick cock that bounced in front of them with each thrust from the male behind them. It was very clear to William at this point that all six of them had been completely and thoroughly infected with whatever Allan had, which meant only one thing...

...they were in for a very, very fun night together.