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Heaven and the Size Changing Toy

By CodyFox

Illustration by Soroxel

"Focus on your essence... feel it building deep within your chest... Now, concentrate that raw power."

Heaven sat at the edge of the rune his dragon master had scrawled onto the tower's stone floor, bobbing his head attentively... focusing his magic. The unicorn boy blushed, trembling and moaning a little as he felt that familiar warm tingling sensation building up within his midsection and radiating pleasurably throughout the rest of his body.

"Once you feel it coursing through your heart and bubbling up to your head, activate your horn. Good... Direct the flow towards the object and encircle it... caress it until its resistances relent, then, once it has submitted to your power, command it to grow."

"Yes, m'lord," the blushing lad replied, aiming the stream of magic flowing from his horn directly at the object sitting in the middle of the room, a pot filled with soft, dark soil. Heaven closed his eyes a little once he sensed his magic caressing around and into the pot, tendrils of energy sifting about through the soil like little magical hands until the boy found that small, hidden green bulb. Heaven smiled happily as he followed his master's instructions, circling the bulb with his nascent magic, caressing it again and again until he began to feel it opening up for him... letting him in.

"Yess... that's good, now give it more... more, boy."

The unicorn boy blushed more along his inner ears, feeling another wave of pleasure sparkling through his nubile form as he accelerated the flow of magic into the bulb, imagining it growing bigger... bigger, sprouting out its tiny roots... shooting a large stalk up through the warm soil. He shuddered, feeling his arousal beginning to grow as well, his giant fuzzy sheath fattening out from his belly and rising noticeably as his heavy, dark blue unicorn cock throbbed and expanded within. The dragon stood above and to the side, watching the unicorn boy's sensual display, mostly keeping his attention on Heaven's magic and not the huge wobbly sheath or those excessively plump nuts resting on the floor, gently squished between the cute boy's thighs.

Heaven moved one of his silky hands between his thighs, resting it against the twitching warmth of his milky-blue fuzzed sheath. "Ohh" he gasped cutely, soaking in the wonderful pleasure throbbing through his over-plump equine flesh, sensing the plant growing ever larger, greedily swallowing his unicorn magic and begging to grow more. When Heaven finally eased up the flow of energy and opened his eyes, he was amazed to see the large, healthy green plant rising up over four feet tall, nearly as big as he was. Even the leaves had grown massive and lush looking. His master's rune was glowing with powerful purple energy, and a few sparks of electric energy bounced back between the rune and the boy's horn, tickling him all over and making him giggle a little. He smiled and fed one last burst of energy to the plant, watching as the plant's giant flowers all began to bloom in a lovely array of pink and purple colored petals.

The dragon patted the boy's ears with a large green claw, "That is good, apprentice. You are progressing well. Soon enough, we will start with more advanced matter manipulation."

Heaven was still feeling a much heightened level of excitement, by now showing several inches of his fat blue horse cock hanging out over one of the boy's thighs. This felt much, much better than the last few times the dragon had taught him to use his magic.

"Thank you, m'lord," the boy replied as he kept blushing hard and playing his soft hand up and down over his mostly sheathed cock and the heavy, fuzz coated melons between his thighs.

The dragon just chuckled a little, watching the unicorn lad innocently playing with himself while enjoying his magical afterglow, and let him be. "Once you have... uh... recovered, move the plant downstairs next to one of the windows, and finish your other chores.

Heaven panted a little as he tried his best to calm down, moving his hand from his throbbing parts and resting it on his thigh, "Yes, m'lord," he said while smiling up to the tall, two legged dragon. With that, his master left to continue his own studies.

~

Even when he was relaxed, Heaven was still pretty much constantly aware of his sexual endowments. Whether he was clopping about, sitting, or sleeping, it was impossible to ignore that heavy piece of equine artillery bumping about within his downy soft-fuzzed sheath. Then, the boy's melon-sized nuts were a whole different matter. He had to adjust himself to sitting, lounging and even walking in different ways to accommodate their weighty mass. He was learning, but even now, as he moved the plant into position next to his master's store room, he was becoming unbearably aroused by the constant sensation of his ridiculously sensitive parts rolling and smacking together. Heaven panted a bit as he stood back up, blushing as he glanced over at his master's store room, remembering what happened last time he was in there. Just as before, there was no lock on the door. His master had told him not to play around in that room anymore, but seemed strangely unconcerned about taking any precautionary measures.

"Maybe... he just wants to test my abilities," the innocent unicorn boy said and smiled, clopping over to the store room door and slowly creaking it open. It was dark inside, but Heaven's ivory horn began to glow as soon as he stepped in, bathing the room in his light blue aura. Creating light was one of the first things his master had taught him.

Heaven clopped around the store room, looking for something he might be able to use to test his abilities. He moved past a familiar box, titled 'Unicorn Toys.' His master had sternly said that those were too powerful for him to play with, and was surprised that the boy even survived his first encounter with them. There was no telling what might happen if he tried them again, his master scolded. Heaven was sure that was not a test.

A few rows down, the boy came upon another, smaller box. On this box was written 'Size Changing Toys." Heaven smiled curiously, pulling the box away from the wall and peeking inside, where he spied a single, shaft-like object. It seemed like a similar type of toy to the unicorn one he'd played with before. The boy flicked his ears down and blushed a little as he remembered what that felt like, stretching him in unimaginable ways when he'd stuffed it up under his tail. This one was a lot smaller though, and was purple in color. "I wonder if my master plays with this one? But... it's so small," he wondered. Then again, the box did say "size changing..." The boy remembered how his master was able to change size and switch between two-legged and four-legged forms at will, and thus it made sense he would have toys that grew or shrank with him! Heaven smiled and swished his tail, congratulating himself for his own deductive skills. "I bet I could make it change sizes, too..." the lad said and bobbed his head again, holding the toy in his hands and pushing the box back into position. With that, he exited the store room and clopped back up to the tower's top room, where he'd been practicing on the plant earlier.

The sun had already set, and the moon was now streaming its silvery light through the tower's window, giving Heaven's bluish-white fur a healthy glow. He swished his tail casually as he made his way to the center of the rune on the floor, gently kneeling and looking curiously over the squishy purple toy. He smiled again as he ran his digits over the strange ridges running along the toy's front, wondering what those would feel like inside of him.

"I'd better put it inside of me first," he said while blushing again and touching the toy's jiggly tip right against the lip of his huge sheath. Heaven curled his digits a bit and moaned, leaning back, resting his plump horse butt against his hooves while panting a little and gradually stretching his sheath lip over the toy. Meanwhile, he rubbed his other hand up and down along the belly of his giant fuzzy tube and the cleavage of his heavy balls, encouraging his big spheres to twitch in excitement and his horse cock to rise up and press against the toy, pumping several big squirts of pre-cum all over it. "Ooohhhh... ohhh, mmmm" Heaven trembled and bobbed the toy up and down and up and down inside of his sheath several times while his pre-cum continued pumping voluminously, drenching the toy and drooling out around it to ooze down the sides of his sheath. Heaven finally pulled the toy out, its purple faux flesh shiny and soaked from top to bottom with layers of his pre-cum, while a few long gooey strands followed out of his sheath and slopped over his own belly. "Ahhh" He panted a little more, flicking his horseboy ears eagerly as he looked at the soaked toy while lifting his butt off his hooves. This was going to be big fun, the young unicorn thought!

Heaven leaned forward, lifting his milky-coated butt up high and exposing his dark blue fleshed pucker for the toy. He blushed again hard and practically drooled as he started shoving the slick, ridged 'dragon' toy into himself, gasping and feeling his own pre drizzling off the toy, thoroughly soaking his stretchy blue flesh and running down between his quivering flanks and his massive nuts. Considering the enormous size of the unicorn toy he'd played with before, this toy plunged all the way into Heaven's swaying horse butt relatively easy. Even so, the greedy boy kept at it for a few more moments, plopping the ridged toy back and forth again and again while a veritable pool of pre-cum built up within his fattened sheath. Just before he felt his heavy equinehood about to drop out of the sheath, the boy stopped, panting heavily and just leaving the toy stuffed inside him to the hilt.

"Ohhh... wow... that... that's a good one," the young unicorn said in a cute tone of voice, holding both of his hands together over his tummy with both of his silky ears flicked down all the way. That strange, ridged toy still felt good, even just plugging him up as it was now. "I'll make it bigger... lots bigger," he said to himself while nodding and blushing again, glancing back down at the rune encircling his body on the floor. Heaven closed his eyes then, remembering exactly what his master taught him, relax... focus... build... and concentrate...

Just as before, warm, tingling energy focused deep within Heaven. He clenched his eyes tighter, turning his thoughts and senses inward, feeling his power gradually building up as he urged it on. Once more, the young uni felt his blissful unicorn magic radiating throughout his supple young form. "Ohh... yes... lots bigger" he repeated quietly, flicking his ears several times as he felt his fat horse-cock throbbing eagerly under the influence of his increasing magic. His thighs and plump creamy butt quivered with that same tingling sensation, the ridged toy being squeezed over and over and eliciting several cute little moans out of Heaven. He blushed again and held back that built up magic a little longer, the rune surrounding him beginning to light up with a subtle purple glow. Then, finally Heaven leaned forward, placing his hands down onto the runic inscription while letting it all flow up through his body and into his pulsing horn.

Light blue tendrils of energy reached out from Heaven's horn, licking down over the sides of his sheeny body and crackling across the glowing rune lines. At the same time, sparks of purple electricity rose up around him, leaping from one side of the rune to the other. Heaven's arousal was pretty obvious by now, inches of his shiny dark blue cock jerking up and out from his sheath, jostling lewdly under the boy's belly and chest as he tried his best to focus his magic into the toy stuffed under his tail. "Ohh... al...most... ahh!" The moment that his unicorn magic made contact with the toy, the energized, ridged shaft felt like it was buzzing eagerly within him, thrumming and tickling the boy's ultra-sensitive prostate in a way that made him giggle sensually.

The tickled unicorn was trembling as he started feeding magic into the toy, imagining it growing bigger. He moaned as he suddenly felt his cheeky horse-butt spreading more around the buzzing toy, its girth and length expanding rapidly and stretching his pucker and inner walls, forcing the boy's cute little belly to start bulging with its thickened impression. "OOhhh... gosh..." Heaven flicked his ears about, opening his eyes again and blushing hotly. He looked down over his bulging belly and clenched his big juicy horsebutt around the larger toy, resting one of his hands over his tummy as he willed the toy to grow even bigger... "Ohhh... YEsssssss!" the boy squealed cutely as the throbbing, jiggly toy lurched within him, growing nearly twice as big, gaping his pretty blue pucker massively and smothering his prostate with its wildly buzzing surface. Heaven's belly bulge was huge now, the boy's vision going blurry for a moment as he moaned and brushed one hand up and down over that excessive bulge, his other hand trailing down over the side of his enormous twitchy orbs. Heaven's flare was bobbing erotically in front of his bloated tummy, drooling out large gobs of pre-cum again as his shaft flexed bigger and bigger every few seconds.

Heaven panted and lifted his hands up from the glowing rune, watching the electric pulses dancing around him while hugging around his fattening endowment, blushing and feeling himself throb in ecstasy. "I... I want it to be bigger," he moaned a little. He braced himself a little, and then relaxed his magical restraints further. He could feel his energy flowing much more freely, his pleasure rising dramatically as it gushed out of his trembling body, like some kind of amazing magical orgasm. He moaned again sweetly, almost slumping to the floor as the feedback of energy between his horn, the rune, and the toy intensified. With every eruption of the boy's magical horn, it felt like more energy was feeding back in, spasming through his quivering horsebutt, his heavily swelled endowments, and all of his other pleasure centers.

Heaven could feel the toy growing again... it jerked within him, expanding again... fatter and longer with each jerk... it was amazing... For some reason, though, the boy didn't feel the same level of stretching sensation that he felt before. Each time the toy swelled within his plump butt, it almost felt like it was always supposed to be that big. He blushed harder on his cheeks and ears, continuing to caress both his soft, swelling tummy and his expanding equine boyhood as he stood up on wobbly legs, stumbling over to the cushioned bench under the room's window while making a cute little "Ohhh" sound.

Heaven panted more softly, collapsing onto his back on the lavender colored cushions, lounging and closing his eyes as he just soaked up all of that extra magical energy. He giggled again when it rippled all across his body, tickling every one of the boy's pleasure spots again and again and again. The bench creaked a bit under the boy's weight as he wriggled about, his swelling erection now flexing up and down over his bulgy tummy in the same rhythm as the flexing toy while drooling out more sticky gobs of pre-cum over his belly and chest. Heaven never imagined it would feel this good. He clenched his eyes again, gasping once more as he clenched and relaxed his milky flanks around the huge toy while basking in the silvery moon light. As good as he felt though, the boy couldn't help but notice that this old bench seemed to be so much smaller than he remembered. He could just barely fit on it! He shifted his weight again, hearing the bench creaking louder... then gasped as he bumped his head on the bookcase behind him! "Oww... what... how did I..." he blinked several times as he opened his eyes, looking down over himself. His belly bulge looked even larger, though strangely, it looked the same in proportion to the rest of his body. "It's... still getting bigger," the unicorn boy smiled and flicked his ears down as he rubbed over his larger belly and the toy's impression. It wasn't until that moment that Heaven realized his butt occupied half of the entire bench... Horse butts were certainly big, but he didn't remember his being this large!

Heaven leaned back against the bookcase more, not even realizing how easily his larger body was beginning to tip it over. He looked down at his hip, feeling over the side of his swollen equine flanks with one hand... they felt more than twice as full and large as before. He blinked again, suddenly noticing how huge his leg looked hanging off the side of the bench. He was higher off the ground too... in fact, everything else in the room was suddenly looking a lot smaller to the boy. "Ahh.... what's happening...?" Heaven groaned as he felt all of that magical energy infused within his body suddenly surging... His vision went blurry, the tingling pleasure from before spiking again all throughout his shimmering form. "OOoohhhhh....." he moaned blissfully, rolling his hips involuntarily and watching through hazy eyes as his shiny blue horse cock bobbed up and down over his tummy, spasming and throbbing up massively right in front of him, gaining at least a full foot of length. More pre-cum splashed out of the wider flaretip as a grouping of extra thick veins began forming near the base of his cock, pumping erotically. Heaven nearly fell off the bench as his mind was wracked by intense pleasure. He cried out again, feeling his flanks and hips swelling again larger over the cushions, his head and glowing horn reaching up higher on the bookcase as his whole body surged once more.

Heaven's rapidly increasing weight was becoming too much for the old bench. He gasped again, feeling another surge of growth. His head was up over the bookcase now, and he heard the bench creaking again... then starting to snap... "Ohhh, ohhh..." Heaven shuddered as he felt the bench break underneath his expanding size and girth, his butt falling the short distance to the ground and his massive, weighty balls flopped down with a heavy sound, sprawling over the stone between his legs. As concerned as the boy was with his sudden growth spurt, it felt... so... so good... Deep down, he knew he should try to turn off his horn magic... maybe try to reverse the effect before it got much worse, but it was... just too much pleasure for him to resist.

"Ahh... yes..." the sweet boy moaned again, shivering as he craved more of this bizarre growth sensation. "m... more..." he gasped and closed his eyes half way as he submitted himself further to his horn's magic, feeling another surge of energy crackling throughout his body and jolting his pleasure up to an even higher peak. The boy's overgrown endowments felt hot, his massive nuts twitching again as they swelled and spread his thighs wider apart. The veins near the base of his cock were continuing to swell, pumping and feeding into a strange new ring-shaped bulge that the boy could feel forming around his shaft's considerable girth. It was rapidly plumping up close to the size of his medial ring. He gazed over it with his vision still blurred, blushing more and feeling over the new cock-bulge with one of his hands... "Ohhh yesss" he coooed as he felt it pumping again, growing fatter... much larger than his original medial ring. He squeezed at it and nearly orgasmed as his massive equinehood buzzed against his body with a mind-altering level of bliss, the young unicorn gasping again and wildly flailing out his free hand for support, easily knocking the bookcase over and spilling its contents out over the floor. Heaven wriggled again and sprawled onto the floor, moaning as his growth surged again, the boy's cock so large now that his original medial ring was pressed right up against his muzzle. He blushed hard and sucked and licked on it greedily.

Heaven's hand cupped at his new bigger ring, squeezing and pumping it up and down, feeding his heightened pleasure. Every surge of ecstasy through his giant cock and balls seemed to just urge on the boy's magical growth, creating another blissful feedback loop between his unicorn magic and his sexual pleasure. "YEsssss!!" he called out, loud enough to be heard a few floors down, as his whole body throbbed and swelled again. His hooves stretched out and pressed against the far wall, and the cute 'little' unicorn's head reached nearly all the way up to the ceiling. He could feel a ridiculous peak fast approaching, Heaven's tongue hanging out as he panted and moaned again and again, hugging around his gigantic blue horse-flesh with both arms. His butt was squishing against the wall behind him, the enormous milky blue cheeks trembling around that massive toy. His tail spasmed and gained several more feet of length, hanging out the window now and down the side of the tower.

He squeezed harder around his cock, hugging tighter at the pleasure-hungry organ while his sparkling horn aimed down, making contact with his huge flare. Heaven's pleasure shot through the roof as the two made contact, his blissful cry sounding far out into the night as his heavy nuts pumped madly, his prostate throbbing against the buzzing toy, his cock bloating even more outrageously and then beginning to fire off a massive torrent of unicorn cum that erupted against the ceiling just above his tip and splashed out across both the ceiling and floor in every direction. Heaven squealed blissfully again and again as his heavy cream pumped out wildly, soaking his newly giant form while flooding the entire room. He tossed his head back a little, the boy's climax converging with another growth spurt which surged his head up against the ceiling, his expanding horn puncturing the thatched roof, forcing through so its tip stood several feet up above the top of the tower. His horn was soon followed by the boy's ears, surging up above the tower like a pair of silky fuzzed antennae. The young unicorn was delirious with pleasure, forgetting just how large he was growing... not thinking at all about the damage he was doing to his master's tower... Oh god... it was so good... he still wanted more! He just moaned sweetly while soaking up more and more of that sexually infused magic, as his master shouted at him from somewhere down below.

The End?