Mathias sat in his office flipping through stacks of hundreds of test papers, slinging Fs, Ds, and the occasional C-. This new batch of students were quite a disappointment for him. It's a wonder why he would waste his precious talents on such dullards. "Uggghh," he groaned, the piles never getting any smaller. The professor leaned back heavily grinding his Alabaster hands against his stony face in mental exhaustion, the chair groaning as it struggled to support his dense weight. Sitting in that chair was a sentient living statue made of the purest alabaster with decorative veins of dark grey and light blue in the shape of tall and well-built male in the pinnacle of health and beauty. Despite his outward beauty, his personality is ugly and sinister. Narcissistic and sociopathic, he only cares for his personal pleasure and well-being. How he ended up teaching magic to undeserving sorcerers is beyond anyone’s knowledge. 
He looked to his left and gazed upon an onyx statue of a powerfully built horse looking at his hands in horror, with a typical large equine phallus hanging between his thighs. “A few of them did make up for what they lacked in brains,” he thought to himself as he shifted his attention to a nude amber statue of a husky who actually posed for his permanent transformation. Each year, Mathias would pull any excuse to "punish" dozens of students and add them to his ever growing collection. And the best thing was the administration didn’t care. So long as the majority of his multiple thousands of students each year graduated with minimal psychological harm, they overlooked his extracurricular activities. 
Mathias was the Petrification Arts professor at Lunar Academy and one of the more infamous too. He was a good teacher and most of his multiple thousands of students became masters at the craft, but a few would never get to graduate onward. Those of unusual beauty and rarity should avoid this man as they'll be immortalized in stone. A prime example of this was walking towards his building…
Outside of the art building, Whitestripe grunted as he hauled a heavy cart to the lair of one of the more dangerous teachers on campus. The black and white striped tiger looked fairly young, maybe nine or ten years old, but his appearance hid the fact the tiger like child was over a century old. He maintained this youthful appearance for two reasons. One was for the sake of his sanity, to hide from memories that he would rather forget. And the second, was to be underestimated. On a campus filled with magical predators who were always on the hunt, being underestimated had saved his tail more times than he could count. 
"I swear, you'd better learn not to pick on the freshmen or I'm going to leave you with him for good, got me?" Whitestripe growled, looking back to the thing he was hauling on the cart. It was a beautifully carved sculpture of a large muscular fox, so very lifelike, that it looked like he could step off the cart at any moment. Whitestripe had caught the fox bullying a freshman for some homework, and as punishment had used his talent to petrify the teen.
The teacher looking out the window laughed, "What is this? Ol' Stripey giving me a present?" If there was a student that literally every teacher would kill for, it was Whitestripe. Not for his beauty or rarity, but the challenge he presented. Many have tried to add this specimen to their collection but all have failed, including Mathias himself a couple times. But this time would be different. He's done the research. He's studied the tiger and his brother, Leogun. They will not escape this time and Mathias will be the envy at the teacher's lounge.
Whitestripe gave a few grunts as he pulled the heavy cart into the art studio, his gaze shifting over the different pieces of statuary. Every muscle in the cat looked poised to act, to be ready to move at the first sign of danger. "Oi, Mathias, I've got something for you to take care of for a while." The boy called out, his sweet, high pitched voice echoing through the building. The small tiger looked somewhat uncomfortable as he waited. He knew how dangerous this could be. It was bad enough having to deal with the living statue during class time. And yet, here he was dropping off another student as a sort of gift to him. And while yes, the fox had deserved it, and needed to be punished for what he'd been doing. At the same time, Whitestripe couldn't lie to himself. It was also a bit of a bribe. To try and keep the teacher off his and Leogun's back. He was good at what he did, namely protecting students from the teachers and their obsessions. But he'd made enemies as well. There was no real reason to keep antagonizing them unless he had too. It was safer for every one this way.
Mathias suddenly appeared in front of Whitestripe with a quick flash of smoke that smelled of burnt limestone. "Ah, how's my favorite pupil doing? Bringing me a present?" the statue took in the petrified fox, circling around the tiger to get a better view. "I see you've been practicing. You did a lovely job," the statue fondles the fox, feeling the textured surface of the stone. Every hair now a uniform sea of ridges, curls, and ringlets. The sounds of stone grinding on stone can be heard as Mathias's hands wonder from the fox's head to his chest and then to his sheath and balls. 
Whitestripe let out a soft squeak when his teacher appeared in front of him. The kitten gripping his chest as he shot a glare at the living statue. "He's not a gift, he's been picking on some of the freshmen, I had to get him to stop, and I figured you wouldn't care about having another statue around here for a few days." His gaze never left Mathias as the statue circled around him, though a light blush formed on his face at the praise for his work. 
"Too bad you didn't catch him while he was jerking off, that would have made for a really interesting sculpture." And with a snap of his fingers, the petrified fox seemingly came to life. Its stone hands rub its hard body. A moan escapes its lips. The fox's sheath stirs as it's cock emerges out and engorges. Mathias with an evil smirk makes the fox grab its dick and balls, slowly masturbating until suddenly, silence. All movement ceases as the fox is left gripping its bits in a fit of furious masturbation. "Now that's a statue!" the teacher cried.
Despite having seen Mathias do it before, the cat jumped when he saw the fox statue start to move, stroking its body and moaning. The cat tried to look away, but the teacher wouldn't miss the cat watching the sculpture pleasuring and stroking himself out of the corner of his eye, the cub panting softly, licking his lips before the fox was rendered back into cold, unliving stone. "Ya, nice work, look, I’ll be back in a few days to grab him alright?" He said, taking a few steps back, a noticeable little bulge in the little cat's blue shorts. The only article of clothing that was on the feline's body.
"I bet you liked that didn't you?" Mathias eyeing the bulge in the tiger's pants, his eyes never missing a detail, "Wouldn't it be nice to just give in? Just be owned by an appreciative owner who'll always take care of you, guard you, care for you." The teacher lacing his words with magic to give it a mesmerizing kick as he worked the young cat. "Every statue I've ever made, I remember and still possess. Not a single one has ever fallen to disrepair or lost to some back corner of a museum,” he lied, “Each and every one a proud member of my collection. Wouldn't you like that? To just not care anymore? Just let your mind slide. Just be admired and appreciated. Your statue would serve me very well. Wouldn't you just love to embrace the comfort and security of stone?" the statue said as he embraced the fox statue, playing with its form. "You can be like him. Always safe from danger. Never fear death or disease."
The tiger hesitated for a few moments as Mathias's words reached his ears. The magical undertones hitting him like a mental sledgehammer. It...it did sound somewhat nice. To have someone to care for him, to watch over and protect him. His face slackened, the boy struggling to resist the mental attack that was sifting through his thoughts. "I...I like being alive, being flesh and blood." He spoke slowly, almost like a toddler learning to say the words for the first time. He felt like a haze of warmth was tightening and constricting around his thoughts. "I'm...I'm nobody's possession." 
Whitestripe took a slow, stumbling step back from Mathias, but his gaze never left the statue as he watched him embrace the fox, a soft mewl escaping his throat before he could stop himself.
"You'll be more than alive Whitestripe. You'll be safe, eternal. Serving everyone around you with your beauty in stone. People every day would come visit you and admire you. They'll gasp at your form. How such a perfect being could have once been living flesh but is now immortal. Never to age. Never to see sickness or injury. Isn't it time you had a break?" Mathias slowly approached the tiger with a comforting smile and his arms raised slightly as if to give him a hug. "All you have to do to leave this world of pain and suffering is step on your pedestal. Step on it and the only duty you'll ever have to worry about is being beautiful." Sounds of grinding stone were heard as a marble pedestal, artfully decorated with flowers and scrollwork and Whitestripe's own name on it, appeared behind the striped tiger.
The cub hesitated for a few moments, staring at Mathias as his words dug into his brain, breaking against his mental barriers and slowly wearing them down. He did want a break, after everything he had done. All the people he had saved, and all the suffering he'd endured, didn't he deserve that much? 
For the first time since the tiger had met him, Whitestripe didn't try and pull away when Mathias approached him. The cat, in his mentally addled state jumped at the sound of grinding stone, slowly turning and staring, his jaw dropping as that beautiful pedestal rose up from the ground right behind him. The cat eyeing his name inlaid upon the pedestal. "Bu...bu....I...I can't....I'ma...I'ma tiger." He slurred out slowly, taking a slow step back from the beautiful pedestal before him, right into the teacher's arms.
Mathias kneeled down and petted the tiger, "You'll always be a tiger. You'll just be made of the finest marble in existence. And not just any tiger either. The perfect representation of the Throwback known as Whitestripe because it will be you. No matter what, you'll never be forgotten. You'll always be there to serve as a permanent reminder as to who you were. A fighter. A soldier. Someone who cared and fought for others, but now you need your rest. You won't live forever and the enemies you face are too powerful. Just give in, take a step, and let your mind rest as your body becomes perfect marble." Mathias smiled, he almost has him.
Whitestripe found himself arching up into Mathias’s cool, stone touch, a gentle, happy purring escaping from the boy as he listened to him. He didn't want to be forgotten, he didn't want to fade away into some dusty old history books, to be forgotten in a mere century or two. The little tiger slowly looked back at his pedestal. It did look very nice; he'd probably make a very pretty statue. And Mathias would take care of him, keep him clean, keep him perfect, forever and ever. How was that bad? 
The cat hesitantly pulled away from Mathias, inching slowly towards his pedestal before the front doors to the art room slammed open, nearly bursting off their hinges. A near mirror image of Whitestripe stepped into the room., "Ya, you don't get to talk anymore." Leogun snarled, lifting a paw as he focused his talent and sent a condensed burst of air at the petrification teacher, it'd be enough to hurl him off his feet and get him away from Whitestripe, but not enough to truly do any damage. 
Leogun took full advantage of the few moments he had as he rushed forward and grabbed hold of Whitestripe before he could get onto that pedestal. "Come on Stripey, fight it, I know he got into your head, but you need to resist it, come on, fight." He growled. Whitestripe's thin frame shuddering for a few moments, the cat's mind struggling to try and fend off the professor's magic once more.
Mathias grunted, magic healing the several fissures and cracks that erupted on his body. The attack took him totally by surprise and he'll have to think fast before the brat takes his prize away. He'll get two statues for the price of one! 
"Leogun!" yelled an authoritative and familiar voice. A tall lithe tiger stood up from where Mathias had landed. He bore a striking resemblance to the brothers, almost another twin, except he was much older, with faint scars running all over his body. Leogun saw before him the father he wished he'd had. The one that should have been there to help him, to guide him, to teach him. "Leogun, you've been a bad boy. Step away from your brother now, he's made his decision," the father sternly growled.
Leogun froze as he heard that tiger's voice echo through the room. His brain going into a mental lock as it struggled to make sense over what he was seeing. For the first time in almost a century, the boy actually wilted under the gaze of the feline, of the father figure he'd dreamed of, wished for since he'd been a true cub. "I...I'm not a bad boy." He struggled to say, ducking his head, unable to meet the stern glare of his father. "Whitestripe needs me, he's not a statue." He said quickly before he lost his nerve. What was going on? Why was he acting like a toddler? He was a war veteran. He killed hundreds of people? Why then was he acting like a frightened child before this older, stronger looking tiger. The one from his dreams.
The older tiger's expression softened, going from stern disapproval to compassion. "It's alright son. There's nothing wrong with becoming a statue. You know, it would make me the proudest father in existence if you stood beside your brother in solid marble." The older tiger approached Leogun and kneeled before, "I love you son. I never want to see you hurt. I know the safest place you can be is right next to your brother as statues in Mathias's collection." The "father" looked at his son in the eyes with a tearful smile.
"You'll always be my boy. Even in stone, you'll be my boy that's always made me proud. But if I ever saw you torn to pieces, burned, or destroyed cold and alone in some fight, it would kill me. I couldn't live on if my boy ever got hurt." the tiger said with heartache as he hugged his son tightly.
Leogun shuddered as he was hugged, tears forming in his eyes as he nearly broke down against the older tiger, snuggling up against him, breathing in his scent. "But what about you papa....and Whitestripe? We have jobs here....we protect people." Leogun whispered, nuzzling his head against his father's warm fur, the cub giving a few sniffles as he purred to him, slowly relaxing for the first time against the older feline man. 
Whitestripe stood beside them, almost in a daze, his head felt warm, but his thoughts simply refused to come, all he knew was that he felt happy and safe here, watching the pair of them, his eyes glazed over, vacant.
The older tiger looks up at Whitestripe, so dazed out of his mind. He wouldn't even notice if he were to be taken advantage of. Mathias steps out of the father façade and approaches the young tiger, leaving Leogun to have his will further broken down by the façade. It won't take much longer. "Hello Whitestripe, are you ready to become my possession, to serve for eternity?" The smug statue removing the single article of clothing he had to reveal his partially engorged cock. All this excitement had gotten the statue turned on. He didn't want to just possess the boys. He wanted to use them too.
The young cub blushed as he watched the statue remove his single article of clothing, trying hard to focus through the warm, loving feeling flowing through his body and mind. He opened his mouth but no sound came out, instead the boy simply nodded his head. His eyes locking onto the statue's shaft when it came into view. The cat licking his lips almost mindlessly, panting huskily, letting out an eager mewl, like a kitten begging for milk.
The stone cock quickly grew to it's fully erect position, pointing straight at the tiger. "I know you want it. The real choice to make is which hole will I use? I think it'd be so cute to see you turn to stone with your mouth wrapped around my cock," he says as he rubs his thick hard pillar of stone. "Or perhaps I got you on your hands and knees, or your back, and feel your asshole become my own custom fuck tunnel," the statue approaches the tiger, noticing the feline's own erection. "Now which position shall you be made into a statue?"
Whitestripe's tail began to wag from side to side. The boy almost seemed as mindless as his beautiful statues, he was just of the wrong substance. His tail rose, baring his tailhole beneath his shorts as he watched his professor stroke his stone cock. Slow thoughts began to pass through the feline's head. About how good it'd feel to have something nice and cold plowing him like a female in heat. The cat arching up, mewling and panting eagerly at the thought. The kitten slowly shifted, his body almost seemingly moving on his own, his instincts taking over, almost demanding to be bred as he wiggled his cute little ass towards the man, the cat boy tugging and pawing at his pants, the boy dropping down onto all fours like a feral cub.
Mathias laughed, "Eager you are! I love it!" He kneels before the tiger and leaned into that ass. His stone tongue tasting and digging into that hot pucker. His mouth tasting and inhaling the sweat and pheromones pouring out of the cat’s anus. He reached up and pulled the ass closer into his, the soft fur tickling his cold stone.
The cat mewled in pleasure as he felt that cool, smooth stone tongue sliding over his tight little pucker. It was likely a shock for the professor, but it seemed the boy was a tight little virgin, despite almost a century of life, it seemed he'd never been taken. Whitestripe mewled eagerly as he felt the statue's cold hands grip his hot fur and tug him closer. The cat practically thrusting back against him, like an eager little female in it's first heat, just begging to be bred and filled with cubs.
The statue somehow pulled himself out of the ass worship. He crawled over the tiger, letting him know the enormous weight over the tiger's frail body, and whispers, "Soon, you'll be able to hold my weight without even breaking a sweat." The statue shifts his body, guiding his cock, and just touching that virgin pucker with the tip of his stone cock. He slowly pushes in. The pucker groaned and resisted the large head, putting up a fight before finally admitting defeat and letting the stone snake slide in. The statue howled with pleasure. The tight warm ass felt so good around his cock.
Whitestripe whimpered softly as he felt the sculptures heavy weight over his body, pressing down on him. The cub wiggling beneath him as he felt the statue's tip rubbing against his ass. A low moan escaping from the feline, the cat arching up like a true feral. The little feline practically hurled himself backwards with a loud yowl as he felt the professor slid into his hot, tight confines. The boy's ass clung to his shaft as he pushed deeper and deeper. Conforming almost perfectly to him, as though the boy's ass had been made just for him and his seed. 
Whitestripe's tongue dropped out of his muzzle as he panted, the cat giving another, almost begging mewl as he pressed backwards again, trying to get Mathias deeper into him. There were no thoughts in his feral brain, nothing other than wanting to get a good rutting, to be bred hard and fast by this heavy statue, to be filled with his seed. Mathias could feel the boy slipping away, leaving an obedient little bitch eager to service his every need.
Mathias had won. He'd gotten his prize. The last ounce of free will the tiger boy had was snuffed out with that first thrust. The statue pulled out and plows right back in. Whitestripe’s virgin ass felt so good. Tightly wrapped around his cock. He thrusts in again and again, harder, deeper, faster with each push. His perfect marble body slams into the feline's supple ass. Both his stone hands gripping the cat's waist pull him deep for the next push.
Whitestripe grunted softly as he felt the living statue forced its way into his body. The cat acting entirely like a feral beast, almost like an eager female, rather than a male. Wanting nothing more than to be rutted and claimed by the professor. He hissed, his tongue lolling out as he thrusted his hips back, rumbling lovingly back at him, wanting more and more.
The statue's breath grew ragged, not from exhaustion but from lust. His stone hips slammed into that cat's ass until, he pulls him in real tight and lets loose a torrent of thick white spunk into the tiger's ass, filling him to the brim and leaking down his leg. Anywhere the thick white liquid touched was instantly turned to stone. Whitestripe's ass grew in weight as the stone infected his flesh. His fur bleaching out into thick ringlets of uniform marble. Mathias pulled out and stood back to admire his handiwork.
Whitestripe let out a yowl as the statue released into him. Feeling that cold smooth liquid filling his rear, his fur smoothing out into beautiful marble, slowly spreading over his legs, locking his tail in beautiful stone. The tiger cub panted, rumbling in pleasure as the stone slowly began to spread up his chest. The boy whining softly when Mathias drew out of his ass.
Mathias stepped in front of Whtiestripe and petted his head as the marble slowly ate that cat's body away. "There, doesn't it feel good? Doesn't solid security feel so much better than weak flesh?"  The wave of stone spilled down the cat's legs, locking his knees and hips together making escape impossible. "Oh your sculpture will look so beautiful. Where o’ where will I put you that will complicate your beauty?" The statue's hand slid down the tiger's neck, across the transition from flesh to stone that consumes that cat's abdomen, and onto the marble rear. His hand clenches a globe of marble and moves up to the tail. The once flexible and fluffy tail was becoming a solid weighty snake of stone attached to the cat's rear end. The many ridges and curls of stone imitating soft fur.
The cat arched his head up, rumbling happily, licking his hand as he looked like a proud feline as the stone continued to engulf him, all four limbs turning into cold hard stone. The tiger standing proudly as he faced his petrifier, the stone starting to move up his front chest and his neck, sliding up his head. The cat let out a soft growl of pleasure as he felt the statue's hand move over his tail, feeling it shift from weak, warm flesh, into cool, perfect marble. Every iota of detail being perfectly preserved in stone.
His eyes were the last to be consumed by stone as his big blues faded into white featureless orbs. He maw slightly opened from mewing his last moan of pleasure. With a whiff of magic, Mathias lifts the multiple hundred-pound statue onto the beautifully carved pedestal. "Enjoy your new existence my sculpture. Your brother will be joining you in eternity very soon," he whispered into the cat's carved ears. Whitestripe will have a front row seat as Mathias turns his full attention to Leogun, still clutching the father illusion.
Leogun hardly noticed as his brother was reduced to a beautiful tiger sculpture, every detail locked into beautiful, eternal stone. The flesh and blood cat nuzzled into the illusion, holding tightly to him, purring to his 'father', he was acting and looking more and more like a little kitten, even younger then he normally did. His pants were growing larger, starting to slide down his legs, the boy not even noticing.
Mathias approached the two from behind. His cock still covered in the thick seed. The illusion told his son, "It's time for me to go. There are those who need me. I want you to stay with Mathias, he'll keep you safe in his collection. No one will ever hurt you again. You've no idea how happy it would make me to see you immortalized in stone." The illusion stood up and hugged the young boy. "Now you treat my little statue good, ya hear me?" Mathias made the illusion instruct him as a cruel joke.
Leogun blushed softly as his father told him that, ducking his head. "O...okay papa." He whispered shyly to him, mewling and leaning over to nuzzle him. "I'll....I'll be a good statue, Me and Whitestripe will be da prettiest statues ever." He told him lovingly before looking over towards Mathias, ducking his head lightly.
“Glad to hear the enthusiasm,” Mathias said as the illusion walked off out of the building and dematerialized into nothing once it rounded a corner. The tall statue stood next to the small tiger. The cat’s head at the perfect height for what he had in mind. “You see my cock? All covered in this gooey goodness? Well, that’s what will turn you to stone. It worked wonders for your brother. Why don’t you show daddy how big of a boy you are and clean my pole for me?” The statue’s voice full of raging lust, barely able to resist pinning the cat down and face fucking him. “Be sure to get it in nice and deep before your mouth petrifies to its final shape”
Leogun eyed the stone shaft for a few moments, licking his lips lightly before his gaze looked over his stone brother. "o...okay." He told him shyly. He slowly moved forward and wrapped his muzzle around the statue's shaft, lapping at it as he took it all the way up to the statue's balls, the tip of the shaft going into his throat as the little feline moaned softly, taking it like a champ. His tongue lapping and stroking over his shaft, taking all of his seed as he moaned lightly, purring to the statue as he stood their, inching closer to the man as he continued to suck and clean that shaft.
Mathias groaned, the cat's mouth was incredible! He gently gipped his head, playfully tickling one of the ears, and slowly thrusting in and out of the boy's muzzle. The tip of his dick barely touching the cat's lips before being rammed down until his balls scrunched up against the cat's chin. Once again, the statue neared orgasm again, dribbling down thick rich pre into the boy's throat. "Get ready my sculpture, you'll be finished in just another.... few... moments!"
The cub moaned softly as he continued to lap and suck, his paws coming up to stroke over the statue's balls. The cub pressing his forehead against the statue's crotch as he continued to suckle like a newborn, trying to get at his milk. His tongue rubbed at the shaft as his throat squeezed and clenched around his throat, like a perfect vice, made just for the teacher's shaft.
"Guuuhhh!!!" Mathias yelped out as he blasted another load. Cum pouring into the tiger's throat and backfilling. Leogun's head almost instantaneously petrified. A solid block of stone on top of a flesh and blood body. "Ahhhh, how's that feel my new possession? How's it feel to have your mouth turned to solid marble around my thick cock?" knowing at best the tiger could only whine or purr, at least until the stone consumed those bits as well.
The cat let out a loud mewl before it went silent as the stone engulfed and took over his head, rapidly spreading down, smoothing and petrifying the tiger. Within a minute, standing before the boy was a smiling, tiger boy sculpture, the cat's face etched in a loving expression around his shaft, still wrapped tightly around his cock, his cool marble hands still on Mathias's balls.
Mathias breathed in deep and sighed. Whitestripe and Leogun, the prizes of his collection. He traced his hand along the outline of the tiger's face. "So beautiful," as he slowly puled out, being careful to gently tug his balls from the tiger's stony grip. Leogun looked so adorable, holding an invisible set of balls while sucking on a missing cock. With a flash of magic, all three statues were zapped into the professor's office. Mathias cleaned off the spunk, sweat, and dust off out of every nook and cranny he could, then proceeding to polish them to a brilliant shine. With a few words and hands motions, sparkles of purple energy zapped into the statues, reinforcing the spells that kept them complacent. They'll never revert to flesh on their own again.
The two cats looked in perfect condition. Freshly made sculptures, both tigers looking so very happy, forever sealed in stone. He could feel the cat's minds fading away, being wiped away by the magic. The cats slowly fading away into true, permanent stone. Within a few days, the two would be nothing more then perfect, ordinary sculptures. They would be his for eternity.
And with a final grin, Mathias closes the door to his office and goes off to brag about his catch.

...

Across the city, a white tiger with black stripes paused, glancing backwards. "Ah damn it Whitestripe." He muttered as he pulled out a cellphone from his pocket. "Ya, you guys, Whitestripe and Leogun need help. Ya, yep, let's meet up at the academy and get them." He said before hanging up and starting to walk. "God damn it, Whitestripe you owe me." He grumbled, smiling as he started off.