Joseph collapsed on his dorm bed. The lanky 18 year-old cheetah was exhausted from his first day at college, or more specifically from carting around his books. Physics, Astronomy, Biology, Calculus, all the advanced courses the new college freshman was taking had a lot of books. Heavy books, at that. 

Weakly, Joseph looked over at his box of personal effects with eyes half-opened, only to shut soon thereafter. While his anime, figures, and Holds & Humans posters needed to be unpacked, the cheetah felt too tired from the day to do anything but lay in bed, still fully dressed. He hadn't even had time to meet his roommate, an older student by the name of Raiach. It was an odd name to be certain, but that was all Joseph knew about his roommate.

Until, of course, the door opened. Joseph turned his head to see a tall, well-built lion, carrying a large overstuffed duffle bag as though it were empty. The cheetah blinked then sat up in bed, looking upwards with a bit of awe. “Uh, Hello,” Joseph offered, hesitantly, “I guess you much be Raiach?” He had pronounced his name as if it rhymed with itch, secretly hoping he was within the ballpark. 

The lion grinned and shook his head, his flowing mane waving. “Ah, Joe, right? It's Raiach, with a 'k'. This my second year here, on the football team and all.” The lion tossed his bag onto the other bed in the dorm; it made a very heavy sound as it impacted. Raiach then closed the door and flung himself onto a chair, very relaxed. “How about you, stereotypically joining the track team or something?” he asked of the cheetah, who shook his head.

“No, no,” Joseph said, almost weakly compared to the lion's booming voice. “I'm... not really into sports. This is my first year, majoring in aerospace engineering, actually.” 

The cheetah looked puzzled as Raiach grinned. “That's not what I heard,” he stated as he lifted himself up from his chair, walking over to the bed and pulling out an object from his bag. “In fact, I heard you are going to be our new star linebacker.” The lion started advancing on the much smaller feline, grasping a small vial of some liquid in his paw, 

The cheetah blinked, terror and confusion overtaking his emotions in equal measure. Raiach pounced, pinning Joseph down on his bed, “Wait, what?” he started to say, but was suddenly choked by the sweet and salty taste of the liquid from the vial going down his throat. Coughing and flailing, the spotted feline was pinned down by the lion with a single paw, while Raiach's other hand began to undress himself.

“Oh come on, Joe,” the lion said softly into the cheetah's ears. The hot breath and nearly-whispered words combined with the effect of the strange brew, causing Joseph's mind to start to spin. “I've heard aaaaalll about you. Biggest tiger at State, kicked off the team there ‘cause the coach was a homophobe, so you transferred here.” 

The cheetah started to protest, “Wh...what? I'm a cheetah, I've never been to State, and I'm s..traight…” Try as he might, Joseph failed off at the end of his sentence, leaving it dangle with a questioning lilt rather than making it a sheer statement-of-fact. All he could do was shudder a bit in place as the fur on his torso felt the coolness air of his dorm room. Raiach was quite adept at not only removing the cheetah’s shirt but also at the caresses he was adorning along his crotch, right through his slacks.

“Uh-huh, sure,” the lion said, giving a quick lick to Joseph's ear. “If you're a cheetah, how come you have stripes?” The powerful feline traced his fingers along the cheetah's fur, grinning as if his new roommate barely knew his own body. Joseph began to protest but he felt his skin begin to tingle. Looking to his thin left arm, the cheetah gasped as his spots began to change shape, almost writhing as they straightened and danced. Those simplistic dots of onyx swirled about, merging as they shifted all along one arm, and then the other, until each had elongated into stripes that would be more fitting on another feline entirely.

“See?” inquired Raiach, “Stripes, not spots. And if you didn't go to State,” he continued softly, a paw still continuing to rub along the poor teenager below him as Joseph began to moan lowly from the heat enveloping his body, “Where did you get such a muscular build?”

Joseph, though, could barely hear his friend as it was. With each passing second his skin felt as if it was set aflame, right beneath the surface. He could have sworn that Raiach stopped stroking the emerging bulge in his pants, but his eyelids were snapped shut in a mix of bliss and discomfort. All he knew was that he wanted Raiach to stop lording over him, then storm out the door and rush to the bathroom for the iciest shower the dorm could provide.

Sadly for the cheetah, that wasn’t going to happen. Raiach did stop stroking him, at least, but only to slowly sneak his claws down from his hips to his knees. Ever so slowly the fabric gave way, and with a quick grasp and thrust backwards the lion freed Joseph from not only his gray slacks, but also the black silk boxers the diminutive one wore underneath. The lion made sure to take a mental note to ask about that pair later on that evening.

If anything, Raiach’s timing was perfect. No sooner were those pants off and shredded that Joseph started to moan out in shock. His fingers gripped along his new bedspread, gripping deep into the shoddy mattress beneath as he felt as if he was growing all over. His muscles were working overtime, churning about as rapidly as water just hitting boiling point. With each motion, no matter how slight, the cheetah-cum-tiger was growing all the more stacked. His lithe form was soon a thing of the past, as he bulked up so much that the extra muscles within his legs caused Raiach to widen his stance while hovering above him. It was a perfect opportunity for Raiach to free himself from the rest of his own clothes as soon Joseph’s body was more of a brick house than the lion’s. Whatever concoction the newly-crafted tiger was given had added an extra foot and change to his height.

“It’s alright, Joe, I must have barged in during a nap of yours. How about you rest that pretty head of yours and let your new teammate help welcome you to the team?” Raiach’s voice was more than reassuring, his palms pressing coolly into Joseph’s meaty hips. Both paws slowly massaged downward towards his magnanimous thighs, so taut and powerful it felt as if they could bend a steel beam if given a chance. “Now, be a good boy for me. Just because you were your team’s plaything over at State doesn’t mean you can’t enjoy the same privileges here.”

With dull eyes, Joseph just stared at his new teammate as he felt his legs being raised upwards. As his calves rubbed along the fur of Raiach’s shoulders, were they even on the same team? Joe’s memories of everything else seemed exactly the same, almost entirely unchanged. The events in the past remained the same, although with a distinct tiger tint to them rather than a cheetah bent. Still, for a moment it felt as if new memories were flooding in…or were they just forgotten moments of glory? For all of the times he remembered staying up late on the computer working in modeling programs for his projects, Joseph could hear the roars of the crowd in equal measure. Every test he aced was coupled with a rush of adrenaline from ruining a perfect pass. Getting into his dream school was just as important a memory as the shade of one about a killer blitz he spearheaded, helping his team win the semi-finals just several months ago. 

The real and the imagined were coming together in Joseph’s addled mind, and the delicious liquid he was forced to gulp down was winning. So much of him remained the same, but he could have sworn this wasn’t the only time his fur was set ablaze. The tiger could recall the same feeling in the locker rooms right after that particular blitz, the sensation lasting for hours, amongst other things, as he was congratulated by the entire team, repeatedly. His nose sniffed at the air as if he was trying to rebreathe those same scents. The mélange of sweat, dirt, and liters of spunk was nearly impossible to forget, and by now it just felt far too good to recall, let alone care if it even happened. Those massive and mercurial bodies, men of various shapes and weights on his team, they were all so much fun to play with, in more ways than one.

“That’s it. Just let me spread your ass wide and I’ll give you the warmest welcome our team can offer.” Raiach slipped forward a bit more, his erection throbbing with intent as it hot dogged those graspable tiger ass cheeks. “Feel free to purr for me, too.”

Those words had barely escaped his lips before the lion quickly found himself staring up at the mediocre painting job on the ceiling. His entire majestic form felt as if it had been blown backward by gale-force winds, right before he noticed he was the one being hovered over. His eyes started into Joseph’s, which were alight with more than mere passion.

“There’s only one kitty in this room who’s going to purr,” Joseph growled like a feral beast, “and it’s sure as hell not going to be me. In fact, didn’t you practically beg the Housing department to be my roommate? I think you should flip yourself over and raise your ass nice and high, just like this.” The tiger wasted no time in making Raiach’s body conform to his own wishes, until that tight rump was raised and ready for the mounting.

Joseph laughed softly to himself as he stared at that gorgeous feline ring just staring back at him, practically begging to be filled. The draught certainly took a full hold over his body and mind now, perhaps far better than Raiach had ever hoped. The lion’s own moans, mostly muffled by the blanket wedged up into his muzzle, was the only thing he could effectively do; he had felt Joe’s thighs around his cock not more than half a minute prior, and his assumption about their strength and prowess from earlier was spot-on.

“Don’t whine so much, Raiach! You just made one mistake today, and I’m happy enough to forgive it.” 

The lion cried out a bit more as he felt that tank of a tiger wrapping himself around him, enveloping him in a mass of muscles that writhed with each deep breath. “W-what was that?” He couldn’t help but yelp as he felt Joseph nibble on the scruff of his neck, tugging on his mane and skin like a beast in heat.

“Me, being State’s boytoy? Come on, they were all practically mine! But that’s OK, whether you were right or wrong, I’m really going to enjoy making your acquaintance…” 

Joseph didn’t hesitate in the slightest. His thick cock pressed intently along Raiach’s tailhole, dripping without any seeming end. His crown was almost nearly an inch thicker than the lion had ever taken in on his own, be it silicon or real. Still, the tiger gripped his arms around his bottom’s chest so fiercely he was afraid his new roommate above would start cracking them accidentally. 
Still, even if he couldn’t yet drive himself in, the striped feline was more than intent to reach that point. He slid his staff all along Raiach’s taint, dripping precum like a leaking faucet. The warm liquid surged over the underside of Raiach’s balls, and the pendulous motion of his roomie’s bulging sack slapped more of that clearish runoff to spots on their legs it would otherwise never reach. The lion cried out as he felt his new friend’s claws start to dig lightly into his ass, hoisting his cheeks together to help slather up the muscular top’s foot-long shaft to the fullest.

“Better bite down on the bedding, Rai. Hope you’re not too tight, or you’re going to feel this for a month…but maybe you’ll like that. Put a bit more spring in your step!” Joseph was thrilled with his progress, so much so that he relished in taking his time sneaking his head into Raiach’s backdoor. He could feel every single shudder rushing through the rest of the lion’s body as be barely spread his rigid star, feeling that round opening stutter almost as much as its owner. After a few minutes more his head was fully at home within the maned-one’s ass, squeezed expertly by all of those inner fold, as he started to drive himself in with each successive thrust.

The old, outdated bed beneath them was functional but had taken a beating from many prior years worth of sleep and sexual expression. Even then, despite how well it held up, the wooden beast groaned underneath them nearly twice as loud as Raiach. By the time he had six full inches steadily plunging into that athletic rump, the bed itself was shifting forward by nearly half a foot as well in time with their motions, sending the entire structure smacking against the wall so hard it would be a miracle if only their entire dorm floor, let alone others, could hear the commotion.

With each successive pounding, Joseph started to shift Raiach closer to the wall itself, forcing him to raise his powerful arms against the wall to support him instead. The tiger laughed sporadically, half from the vice-like grip that snagged along his entire shaft each time he entered, and the other half from the fact that his erection was exceeding all expectations. Another inch, two inches, three inches kept being added to his length, until he was nearly a foot and a half long of pure feline sausage, and as wide as a TV remote.

Just like a good, feisty tiger, Joseph made sure the little lion below him, who he now towered over by a good several inches, knew exactly how big he was getting. Each successive pounding the striped boy gave his teammate started by nearly pulling out to his tip, holding on until he dripped several more drops of precum barely beyond his opening before hoisting himself in almost to the hilt. This went on repeatedly, each time forcing Raiach’s body to slide further and further up the wall, until he found himself not on his knees any longer. 

At some point within all of the sexual bliss Raiach’s mental-shifted new linebacker forced his golden legs behind his orange back, forcing his thighs to grasp along his chiseled sides. The tiger’s hips pounded upward with the force of a jackhammer, slamming his roommate’s chest along the wall in rhythm with the rest of the bed. With his cheek grinding along the cold painted drywall, Raiach could barely keep his own shaft from grinding all about, shellacking the wall with his own lusty juices. 

Eventually, Joseph reached up with one hand and pulled his muscled partner downward, making him sink his ass down those last three pesky inches until their balls collided in shock. With a full hilting finally achieved, the tiger only slowed down for a moment to gather a bit of his partner’s pre-ejaculatory nectar all along his fingers. They glistened and dripped all about the lion’s chest as he brought his arm up, only to jam his soaking digits into Raiach’s panting maw.

“Save your moaning for a bit, my maned man. Your new champ is close, but you’re going to need to save your strength!”

The lion, utterly trapped and taunted with his own lust-driven flavor, was almost at his brink as well. The constant grinding against the wall, feeling every inch of his crotch being smacked around by the immense orbs assaulting him, was making him reconsider whether or not that vial was a good idea. With yet another satisfying thrust assaulting his prostate and plenty of points beyond, feeling stretched to his absolute limit, Raiach just couldn’t come back any more. The fingers in stuck in his maw quickly retreated as he screamed all of the air out of his lungs, a roar that shook the rest of Joseph’s anime figurines right off of his desk. He let loose with his own milk, pretty much ruining a few of the concert posters either with his own copious gobs of bliss or from his own claws raking them to shreds in ecstasy.

Pleased with the orgasmic display, the authoritative tiger in charge finally came with a vengeance. Each prolonged shot of his spunk within the lion traveled far and deep, thoroughly soaking each and every fold it encountered. Lost in the orgasmic bliss, Joe reached forward with his short muzzle and gripped along that glorious fluff of a mane once more, tugging on it with a bit of a flourish to eke out a few more spurts from his productive partner. Despite all of their extended fucking, he wanted them to finish their prolonged orgasms together. 

Thoroughly exhausted, Joseph felt all of those muscles adorning the lion simply give out as his last few droplets dribbled down his reducing erection. Soon enough the tiger had to give his new compatriot a huge bear hug from behind, squeezing his roommate’s back right into his chest, while he slowly crouched down on the mattress. It took a bit of work to do so, particularly because Joseph had no intention of slipping out of that tight ass until he very well had to, but soon enough he was able to sit down on the side of the bed, holding a tired Raiach in his lap.

“So, Rai,” Joseph purred, still with almost every bit of energy as when he started mounting the smaller feline, “I’m really glad I’m your new teammate and all. By the way, when’s practice?”

It took Rai a few seconds to respond. His mind was still in a haze, and he could have sworn that the tonic’s altering effects was only supposed to last as long as an orgasm, at worst a few hours later. A quick glance at the clock assured him that, indeed, it was not early afternoon any longer, and he should have been staring at a perfectly mounted-and-satisfied cheetah rump instead. “Er, uhm, should be on Wednesday at 4. Why? You should have known that by now, right?”

“Just making sure, being the newbie and all. Besides, that info wasn’t entirely for me.” Raiach nearly yelped as he felt two gigantic paws suddenly grip around his flaccid self and balls, squeezing and massaging them all. The remaining cream still lingering on them made for a fine lubricant, and a few strokes was all it took to wake his member up all over again. “You’re so out of breath and exhausted after just a small workout! I’m going to have to drill you on your stamina to build you up, that’s all.”

“W-what??” Raiach was confused but could barely move. Try as he might, Joseph was undoubtedly correct; all of that work drove him wild, and a good nap was what his mind wanted more than yet another round of sex. His body, however, had other things in mind, right as he started pulsating to his usual eight inches of erect glory.

“Time for round two, kiddo. Focus more on your glutes for a few more hours, hit the showers and have a quick meal, then test your mouth and lungs for what I like to call ‘breath control.’ You’re going to be a brand new lion after all of this, an absolute behemoth on the field!” Joseph quickly withdrew from Raiach’s ass for a few seconds, just to let a fair pint of hot tiger spunk to spill out at a fast pace. With legs thoroughly soaked, and his lion rim drenched to no end in his teammate’s batter, Raiach mewled like a newborn kitten as Joseph slipped right back in to the hilt without warning.

The rest of the early evening and night went exactly as Joseph had planned. He didn’t stop working on Raiach’s glutes until nearly 8 PM, practicing plenty of conventional and special positions he swore he created while on State’s championship team. A quick shower soon followed, allowing Joseph to inspect every inch of Raiach’s form, letting his groping paws figure out what more work his friend truly neede done. Dinner was nothing more than a hastily-ordered pizza, shared in the confines of their dorm room, with the lion being ordered to feed his new linebacker friend while constantly servicing his junk. Every so often the lion was allowed to take a drink, guzzling down another copious torrent of tiger cream that was almost as refreshing as the meal itself.

In the end, neither of them wound up doing any of their assignments for their classes that day. Raiach had passed out first, face down in Joseph’s bed. By around three in the morning the new linebacker remembered that he needed to at least do some reading for his first class of the day. His naked form stumbled a bit over his roommate’s body, fur intimately caressing fur, but Raiach was off in a deep slumber. Luckily for Joseph, nothing short of an explosion was likely to wake the thoroughly-drained lump on his bed.

He stumbled around in the dark a bit until he crouched across the room, rummaging through a bag. In his half-asleep state he barely realized it wasn’t he was rummaging through the wrong one, finding a few scant textbooks and a wealth of athletic equipment. As he fumbled around to remove his paws, though, he felt something small and cool to the touch. Upon pulling it out, it was the same vial he faintly remembered seeing earlier, right before his mind seemed to get a bit cloudy. As he looked down into his hand at the purple liquid, out of the corner of his eye he could see himself in the full-bodied mirror along the closet. He was as spry and as lanky a cheetah as he had ever been, adorned with a wealth of spots the complimented his orange-hued fur.

It didn’t take all that long for Joseph to put two-and-two together. He was an engineering major, after all, no matter how new to the field.

Still, the experience was certainly something he hadn’t fathomed before. Although, despite the fact that he was pretty certain he had taught Raiach quite the lesson through a wonderful backfire, the cheetah made sure to rummage through his roommate’s bag to retrieve another four vials, all full and at the ready. Stalking quietly across the room to his own dresser, he slipped all but one of them into a special little locked trunk he kept for his private things, mostly his scant few valuables, a USB drive filled to the brim with countless pornographic resources for relaxation, and a silicon sleeve for similar purposes.

Taking a seat on the floor, he searched through his own bag and nabbed the textbook he needed for his design class and started reading. His hand idly twirled the vial around as he kept on reading, parsing the new knowledge and his own personal plans at once. Class didn’t start until 9 AM, anyway, and he heard Raiach moan that he didn’t need to be out the door until 11. 

One good sip of the vial at 4 AM should be more than enough time to teach that sleepyhead quite a lesson, Joseph wagered. Force him awake by early-morning training, make him believe that the drink’s effects hadn’t worn off and probably wouldn’t wear off at all...seemed perfect enough to him. All he had to do was work that poor lion back into a sleep stupor before class, relax and change back to normal, and let Raiach spend the rest of his day freaking out about what he had done. His college career had just begun, but the cheetah was thrilled. If every day was going to be as thrilling as the first, he was in for a long, productive four year stretch!

In fact, as far as Joseph was concerned, 4 AM couldn’t come fast enough.