Bigger Little Brother

Shining Armor was panting.

His breaths came in short, sharp gasps, his chest puffing up and out as he pushed his head harder against the back of his bed. Above his muzzle, his horn glimmered blue; a sheath of cerulean magic had wrapped itself around his stallionhood, squeezing it tight and pumping itself up and down his length.

Shining Armor squirmed, his tongue hanging out of his mouth as he went to town on himself. His magic took care of the upper half of his shaft, but he’d wrapped one of his hooves around the base, jerking off his girth as hard as he could. His other hoof massaged his heavy, full nuts, which were more than ready to spill their seed.

He’d held off as long as he could—resisted the urge the whole time he and Dusk had been walking back from the market. But by the time they’d gotten home, Dusk had been hard again, and the second they’d tromped upstairs, Dusk had slammed himself into his room and just moaned. Shining’s whole body had gone stiff, erect in that moment, and before he knew it he’d closeted himself in his room as well. The door hadn’t been shut for a second before he’d flopped onto his bed and started humping his mattress like a mare in heat.

Turning over onto his back had provided more control, his hooves and magic working overtime to stimulate every part of him at once. But Shining didn’t need that stimulation—didn’t, couldn’t have any control. The only thing in his mind was an image of Dusk: huge, horny, growing bigger and bigger and more virile than he could even imagine.

How could he have ever thought that he was a real stallion? Next to Dusk, Shining’s “big brother” status looked like a joke—all that size, all that power, all that lust. Shining was panting, jerking himself off harder now as his fantasies went to his head. He saw in his mind’s eye Dusk’s cock bouncing ,swaying between his legs, his massive nutsack dropping further and heavier as his body swelled to fill the whole house.

He wanted that—he needed to be that. He’d never known it, but Dusk was rapidly becoming everything Shining Armor had ever wanted to be and more. Shining’s grunts turned to snorts, his moans becoming whines as his arousal mounted rapidly. His magic and hoof made loud schlick-schlick sounds as they pumped across his length, the stream of precum dripping down his member rapidly lubricating his shaft and crotch.

Dusk had always been so small—but now, he was larger than life. Shining squeezed his eyes shut, picturing Dusk in the forefront of his mind. How he wished, down in some deep dark place he could never admit, that Dusk were here now, big and huge and filling up his field of view. How he wanted—needed, really—to feel his body’s huge weight, to hear his lower, rich voice deepen as his body swelled to new heights.

There was a rap on the door. “Shining?” Dusk’s voice echoed through a crack in the door. “Can I come in?”

Yes—just like that. Lost in the realm between fantasy and lust, Shining found himself nodding along, grunting as he wove Dusk’s voice into his daydream. “Yes,” he panted, groaning, “Yes, yes, yes!”

“Okay,” Dusk’s voice said. “I’m coming in.” And the door started to open.

Too late, Shining’s eyes snapped open, registering reality for the first time—but there was no time to stop himself. His cock was already spasming, his erection throbbing, his balls tightening against his groin as he began one of the messiest, most intense orgasms he’d ever had in his life. As Dusk’s big head poked through the doorframe—actually bending down, so that he could fit through—Shining’s body was already shaking, quivering as his shaft shot rope after rope of thick spunk over his chest.

It seemed impossible that Dusk hadn’t noticed yet. Shining watched him out of the corner of his eye, a dawning horror in his stomach, as his brother squeezed himself through a door that was obviously far too small to fit his frame. His shoulders scraped the sides, the top of his horn scraped the top—and that was with him crouching down, his bulk struggling to fit through the door. The realization that his “little” brother didn’t even fit through doors anymore just drove Shining’s orgasm to new heights. He was powerless to resist as his voice peaked into a cry of pure, helpless pleasure, his hips jerking and knees spasming as the largest load he’d ever cum splattered all over his chest.

And then Dusk was standing over him, just barely fitting between the end of Shining’s bed and the far wall. Shining’s chest heaved, his eyes wide, unseeing, as a last glob of cum dropped from his tip, splattering onto his jizz-matted chest.

He was covered in his own seed—he’d never cum harder in his life. One glance up, though, brought the horror roaring right back—Dusk was watching him, staring down at him, his lavender cheeks burning as red as a charcoal fire.

“Oh, gosh,” Dusk stammered. “Oh, geeze—I should have knocked louder. I’m so sorry—I—didn’t think—I—”

He turned to go—and Shining slapped both hooves over his face. “Agh!” he groaned, his mane falling over his eyes. “I can’t deal with this!”

Dusk stopped. Slowly, as if he was moving through molasses, he turned to face Shining. He couldn’t quite meet his “big” brother’s eyes, instead opting to stare at a speck on the wall around a foot above the bed. “What do you mean?”

Shining groaned again, and pushed his mane out of his face. He slung his hindlegs over the side of the mattress and rested his arm in his lap, around his still dripping shaft.

“Just—you,” he muttered. “This growth spurt—I can’t stop thinking about it. You’re just getting so big, and I can hardly keep it off of my mind. I can’t stand it—how big are you going to get? Why is my little brother so much taller than me? How is this even possible?”

He choked on the last word, then flopped back onto the bed, his hooves splayed out around him. Out of the corner of his eye, he could see Dusk’s big shape fidgeting slightly.

“Well,” Dusk said, after a moment. His voice sounded slow, awkward. “If you’re wondering about how...I might be able to help.”

Shining pushed himself up off of the bed. He stared up at Dusk. “How?”

Dusk coughed. “Well, when this started happening, I did what I always do.” He blushed slightly. “Research.”

Of course.

He sat down, his thick, muscled haunches pushing out around him as his flank hit the carpet. The second-story floor actually shook under the impact. Even sitting down, he was still taller than Shining was standing, now. Somehow, Shining just took that for granted.

“I went to look at the library to see if there’d been any studies on adolescent stallions and puberty,” Dusk said. “Of course, there were, but I decided to get a little more specific. I looked up unicorn stallions, specifically, and that just pointed me toward a study done a few years back on magic-fueled development.”

Shining blinked. “Wait. You mean that this is your magic doing this?”

“In a way.” Dusk shrugged his big shoulders. “It turns out that all unicorn stallions go through a brief period of development around my age—kind of a magic-fueled puberty, in order to compete with natural earth pony development patterns. Usually, that period takes around a month or two, and only adds on one or two inches at most. I think you gained four, which is actually kind of an outlier.”

Shining did remember that. He’d been proud of it, especially when Mom had started to celebrate her firstborn son “growing up.” It’d been a great feeling—but nothing, he guessed compared to what Dusk had been going through lately.

“Wait,” he said. “Then how did you get so big?”

Dusk shifted his weight, looking a bit embarrassed. “Well, the amount of growth is proportional to the amount of magical energy in that pony’s internal font. More natural magic means more fuel for the body to grow—energy is mass, right? Or rather, vice-versa.” He chuckled awkwardly, scratching the back of his neck with a plate-sized hoof. “It’s actually a rather complicated process. But the general idea is that more magic equates to...well, a bigger growth spurt.”

Shining just stared. He looked up at Dusk, taking all of him—all seven-plus feet of him. He had to be taller than seven feet by now—the doorways were seven feet tall, and Dusk had had to bow down almost to his shoulders to fit in. Even now, sitting down, the top of his horn was just a foot or two away from the ceiling, and that was nine feet tall! Shining swallowed, steadying himself.

“How much magic does that even take?” he said. He swallowed, his throat feeling dry.

At least Dusk had the grace to look embarrassed. “Um. A rather lot, as it turns out. There’s a reason why Princess Celestia took me on as her student as a colt—I think my magical font is somewhere on the level of orders of magnitude larger than yours.”

Orders of—Shining’s head was spinning. And with a size that big, Dusk’s magic had to be stronger than that of the Princess herself. Struggling to hold himself together, Dusk just pulled himself back up to a sitting position.

“Okay,” he said, keeping his words even. “I guess that makes sense. But—agh! You’re so big in all the other ways. Did you really have to be big there, too?”

“I’m sorry!” Dusk said quickly. “I didn’t ask for this.”

“Don’t apologize,” Shining snapped. “I don’t mind it. Really. I just…”

He froze, his voice perched on the edge of his next words. Trembling slightly, Shining squeezed his eyes shut, and said, “I just really, really like it.”

He’d spoken as quietly as a mouse, but his words seemed to ring through the quiet room with all the subtlety of a sledgehammer. Dusk stared at him, Shining’s skin crawling as his brother weighed, evaluated, calculated, his big body seeming to fill up more of the room with each breath her took.

“You—like it?” Dusk said. “I thought you were embarrassed by it.”

“I was—oh, damn it. I don’t know how I feel.” Shining squeezed his eyes shut even tighter, refusing to look at his bigger little brother at all. “I just know that I look at how big you are, and I imagine myself being with that—or being like that—and it just drives me crazy.”

“Crazy—” Dusk actually gasped. “You mean—what you were just doing—you actually.”

“Yes,” Shining bit out, miserably. “I was getting off to you, okay? Fuck!”

That brought the whole room to a silent, screeching halt. Shining didn’t curse lightly—and especially not to his younger brother. But he couldn’t help it—all the strain, all the inadequacy, all the arousal of the last few days was just exploding out of him.

It felt good.

“I—” Dusk sounded uncertain. “I—really?”

“Yeah,” Shining said. He took a deep breath. “That’s what I was doing, okay? I just couldn’t stop thinking about how big you were, how big you were getting—and I’d been keeping myself from jerking off to that for so long, but I finally just couldn’t help it. And then…” He glanced down at the mess on his chest, shrugging. “And then this.”

Dusk nodded, swallowing. “...You’re still hard, though.”

Shining blinked. “I—what?”

He looked down. Dusk was right. Despite the explosive orgasm he’d just had, Shining’s shaft was as hard as ever—harder, even. A line of precum had already started running back down the side, his balls filling up again and pushing against his thighs. Shining stared at his stiffening boner, then grunted, his eyes fluttering shut as his erection throbbed.

Dusk’s voice was small. “Do I—really turn you on that much?” he asked.

Shining stared at his lap. “Yes,” he said. “Yes, yes, yes.” Just being here—with Dusk in the room—he hadn’t, couldn’t have imagined how much having this all out in the open would turn him on, but he’d be damned if he could help it now.

“Then—” And then Dusk stepped forward and leaned over the bed, The weight of his massive hoof pushed the mattress down, his shadow falling over Shining’s body as he leaned forward. Then his mouth opened, his lips parting as Shining’s eyes widened. And then he all but melted into the mattress, his whole body going limp as Dusk’s lips closed around his erection.

Dusk slurped at him once, his big tongue licking up a good amount of Shining’s leakage. Then he pulled back, licking his lips slightly. “—what about that?”

Shining just stared up at him. He was trembling, he realized, his hind legs twitching. He thought he could hear the blood pumping through his ears.

“What—” he began, almost in a whisper. “You—but—”

Now it was Dusk’s turn to look away. “I, uh,” he said, “may have been in a similar position to you. Before, that is.”

“Before—” It took Shining a moment to get it. “To me?”

“Yes!” Dusk blurted. “You were just so tall—you were one of the biggest stallions I’d seen. You were so confident, so big, and you had Cadance, and you were my big brother and—” He slammed his muzzle shut, his jaw trembling.

It took Shining a moment to take all that in. “You mean—even before all this, you—” He cut himself off, then gave the throbbing shaft between Dusk’s own legs a meaningful look. Both stallions’ modesty was rapidly evaporating; at the sight of Dusk’s massive stallionhood, Shining’s own crotch stiffened further.

“Um. Yes.” Dusk’s blush was adorable. For a moment, Shining almost felt like they were colts again—and then he realized that he’d been ogling his brother’s oversized cock for the past ten seconds, and blushed as well. “I wasn’t trying to be weird or anything—I just...imagined myself being like you. Being as big and strong as you. And now…”

Shining couldn’t help but chuckle. “Guess you got what you wanted, huh?” When Dusk nodded sheepishly, Shining shook his head. “I guess it feels pretty good, huh?”

Dusk’s head bobbed up and down eagerly. “Oh, it feels fantastic. And growing feels even better—it’s like nothing I’ve ever felt before—and, well…” He trailed off, his cheeks still red.

“What?” Shining asked.

“Well,” Dusk said. “I, uh...wanted to ask. Did that feel good?”

Shining blinked up at him. “What do you mean, ‘that’?” He followed Dusk’s gaze to his crotch and dripping erection. “Ah. That.” Swallowing, Shining grinned over at him. The mattress sunk a bit under him as Dusk leaned a little bit more of his weight onto his front hoof. Dusk was only a few feet away from his crotch, now, but in his mind, it felt like mere inches. “It felt...good. Really good. But I’m not sure if you should do it again?”

“Why not?”

“Because we’re brothers!” Shining blurted. Silently, he thanked Celestia that their parents weren’t home. “Because we’re not supposed to do that!”

“But we both want to.” Dusk’s words shut Shining up fast. “We’ve both wanted to. And...well, you’ve said that you like me like this.” Dusk blushed even more adorably, his oversized ears flitting forward and backward. “And I like doing that to you. So if it feels good...why not just go with it?”

Shining took a deep breath. Then he cracked another tired grin up at Dusk. “It’s weird not to have you overanalyzing all of this for a change.”

“Oh, don’t worry.” Dusk beamed down at him. “I’ve done plenty of analysis over the past few days. It just happened to be at the same time, or immediately after, ah, certain...personal activities.”

“Got it,” Shining said. He inhaled slowly, then nodded. “Screw it. If it feels good, right?”

“Right.” Dusk nodded down at Shining’s crotch. “So...may I? ‘Big brother’?”

“Little brother is more appropriate by now, I think.” Shining smirked at him. “But go ahead.”

Dusk stood still for a moment. He stared down at Shining’s erection—pitiful compared to his own, though Shining thought he saw a flicker of fascination behind those bright purple eyes. He seemed to be weighing something, calculating, debating.

And then, the mattress sinking under the weight of his hoof, he leaned forward and gingerly took Shining’s member in his mouth.

Shining shivered as Dusk’s muzzle closed around his girth. Cadance had always had some difficulty taking all of his length—when they’d started experimenting, she hadn’t even been able to fit his flare all the way in—but Dusk swallowed more than half his cock without even blinking. Shining’s breath caught in his chest, his hind legs going stiff as the big stallion before him slowly rolled his lips up and down his length.

Dusk seemed to be experimenting, exploring. Which made sense—given his age, and his, well, physical state before now, any kind of sexual contact with another pony had to have seemed off-limits to him. Now, though, his eyes were bright, his lids fluttering thoughtfully as he tasted Shining’s girth. Shining moaned softly, his hips jerking and sending a glob of precum to splatter against Dusk’s gums. Dusk just tasted it, his big tongue dabbing into the puddle of pre in his mouth, then turned back to let his tongue roll up and around Shining’s head, embracing it in a perfect cocoon of soft, warm, moist flesh.

Shining was breathing heavily now. “A-ah,” he grunted, his eyelids fluttering. “Dusk—oh, that feels so good.” He was panting a bit, his eyes jerking shut as Dusk went all the way down to his base—first straight down, so that Shining’s normally massive length just went back to the end of his mouth, then sideways, turning his head and pushing Shining’s shaft with his tongue so that it swished against the inside of his cheek, deforming and bulging it out slightly. “Nngh,” Shining groaned, watching his flare prodding against the inside of Dusk’s cheek. “Oh, gods, Dusk, don’t stop.”

Dusk just glanced up at him. Shining could swear that his little brother’s muzzle curved upward into a smirk. Then, Dusk began to pick up the pace. He kept eye contact with Shining for a few moments, but then turned back to his task. He bobbed his head up and down, his lips smacking against the sides of Shining’s organ as he rolled his muzzle over Shining’s girth. Shining panted, squirming as Dusk swallowed his cock again and again, letting it slide past the opening of his throat before pulling back.

Streams of precum were spurting from Shining’s cock; Dusk gulped them all down, eagerly even. Shining imagined Dusk swallowing his cum, then using it to grow even bigger, until he could hold Shining’s entire cock in his mouth without even trying. That just turned him on even more, increasing his output of pre and giving Dusk an even bigger meal to swallow.

Shining had both his hooves on Dusk’s broad shoulders, feeling Dusk’s massive weight rock a bit back and forth each time his head bobbed down over his crotch. He felt like a foal cradling an adult stallion, like a midget trying to direct a giant. “Keep going,” Shining grunted. “I’m—almost there. Oh, fuck.”

Dusk picked up the pace. He suckled even harder at Shining’s cock. The suction was insane. Shining actually had to grit his teeth, squeezing his eyes shut as Dusk’s big, inviting mouth took over, swallowing up his stallionhood and controlling it completely. Dusk’s big tongue swished along his underside, controlling his shaft’s every movement. Every time Dusk’s lips kissed the bottom of Shining’s shaft, they pressed down on his balls, plumping his heavy nuts and increasing the frequency of the pre spattering against the insides of his cheek.

Shining was getting there, and he was getting there fast. Scarcely a full minute after Dusk had began suckling on his member, he felt his hips jerking faster, his face contorting as he gasped for air. “I’m—” he gasped, sweat rolling down his cheeks. “I’m gonna—I’m gonna cum. I’m gonna—ngh!”

He gasped as the tension in his loins went slack. His muscles tightened, forcing his hips upward against Dusk’s muzzle. Shining felt the head of his shaft flare between the curl of Dusk’s long, oversized tongue, the first ropes of his load shooting out and splattering right against the back of Dusk’s throat. Shining groaned, his hooves clamping around Dusk’s muscular shoulders as he went over the edge, his hips violently jerking as his member burst with copious amounts of ejacluate.

Dusk just drank it all down, his big cheeks puffing thoughtfully as he gulped shot after shot of Shining’s load. Shining was breathing heavily by the halfway point, his mane feeling hot and damp over his face as his flaring member gushed more and more jizz into his brother’s mouth. He’d already cum today, but the intensity of this orgasm surprised him—it almost matched the first in terms of sheer strength, and the volume was insane. The suction of Dusk’s lips around his shaft, though, only increased the output of Shining’s heavy nuts; he felt like he were being milked, as though Dusk were gulping down swallow after swallow of his hot load in order to grow bigger than ever before. And he loved it.

When Shining finally finished, he was wheezing, sweat streaming down his chest. Dusk just pulled back, the edges of his lips coming off of Shining’s cock with a wet pop. He inhaled slowly, the force of his breath actually pulling Shining’s thoroughly wet shaft a few centimeters forward, and then glanced up at his once-”big” brother with a hopeful, curious look.

Shining released his grip on Dusk’s shoulders and slumped back, his hooves sinking deep into the mattress. “W-wow,” he gasped, his chest heaving. He shuddered as the afterglow of release spread through his veins. “That was...incredible.”

Dusk gave him a shy smile, leaning his head on the edge of the bed. “I’m glad you liked it.” It was funny how, when he folded himself in like that, it was almost like talking to a shorter Dusk—but then Shining saw the tall, muscular curve of his brother’s flank rising above his head, and the illusion vanished.

“Very much so.” Shining closed his eyes and drew a slow, shuddering breath. “Wow. Thank you.”

“Glad to help. You looked pretty hard.” An awkward expression crossed Dusk’s face, and he glanced down off to the side, his cheeks reddening again. “Actually, uh…”

“Yeah?”

“I, uh, may have gotten a little excited during that too.” Dusk forced a smile. “It’s not every day you get to suck on your big brother’s cock, right? So, uh, well…”

He pushed off of the mattress, drawing himself up to his full height. The top of his horn nearly scraped the ceiling like this, his broad shoulders flexing as he ascended to his full size. At his height, around six to ten inches of space were visible between Dusk’s underbelly and the top of the bed. Shining stared, eyes widening, as a very large, very hard shaft bobbed between his brother’s legs, drooling a veritable river of precum onto the ground.

“Uh,” he said, licking his lips. “I don’t think I’m going to be able to fit that into my mouth, Dusk.” The flare alone looked as wide as his whole head.

“Oh! Right.” Dusk blushed even harder. “I was just thinking, though—maybe you could, I don’t know, rub it a bit? It’s just so hard, and my balls feel so full—”

“Even after the show you gave today?” Shining said. He could, in fact, see Dusk’s balls past the girth of his head: a pair of huge, fat black spheres dangling to just below his knees. He could imagine them sloshing, groaning with cum as they produced more and more jizz than any other stallion could handle.

“Yeah. At this size...well, I tend to have to ‘relieve’ myself once every few hours. If not more often.” Dusk chuckled, made to scratch the back of his neck, and wound up back-hoofing the ceiling instead. He blinked up at it, looking awed and surprised at his own size. “Five or six orgasms a day has gotten to be kind of the norm for me—and that was just yesterday. Today, I’m even bigger, so it’s a lot harder to handle.”

“I’ll bet.” Shining just stared. The amount of pre pouring from Dusk’s slit had run onto the carpet, staining it, and pooling into a big, whitish-clear puddle. It looked like his brother had already leaked more than Shining had gotten in his entire last orgasm. No wonder Dusk was so desperate to get off.

“Alright,” Shining said. He was unable to tear his gaze away from Dusk’s massive erection. “How do you want to do this, then?”

“Well,” Dusk said. “I was thinking we could…”

Instead of finishing his sentence, he turned, then flopped down onto his back. The whole floor shook as Dusk’s quarter-ton body impacted onto the carpet, Shining’s bed especially trembling on its supports. Dusk grinned sheepishly up at him. He had his forehooves curled up against his chest, his hind legs planted firmly on the ground. Above his belly, his massive stallionhood bobbed helplessly, drooling steadily onto his chest.

A blush on his face, Dusk said, “I thought this might be...a bit easier?”

Shining was blushing too. Dusk easily covered most of the distance from the door to the far wall—he seemed to fill up most of the room without really trying—but this new position just seemed so...vulnerable.

Hopping off the bed, he evaluated Dusk’s position for a moment. Then he shook his head. “I don’t know. You’re a lot bigger than me, but not that much—I don’t think I’d be able to balance on your stomach or anything.” His cheeks flushed red, Shining added, “But maybe if you, uh, sat up or something? Then I could try that.”

Dusk nodded. Scooting himself back a few feet—and setting the whole floor shaking again—he pulled himself up into a sitting position. As he inched his way up the wall, his head towering up toward the ceiling, his cock slapped against his chest, then flopped heavily onto the floor. Shining looked down it and took a deep breath. Even sitting down like this, Dusk was a good foot taller than him now—had he gotten even bigger in the last five minutes?

Tentatively, Shining stepped forward. Dusk’s cock was about as thick as his torso, and around as tall. His balls—Shining could barely even comprehend their size. Each one had to be a good two feet in diameter; he didn’t even want to think about how much of Dusk’s seed they held, especially given how much he was drooling right now. Or maybe, he decided after a moment’s reflection, he absolutely did.

When Shining’s hooves, tiny by comparison, made contact with Dusk’s flare, the larger stallion actually moaned a loud. Dusk’s breathing was different than Shining’s had been—long, slow, and labored—but the evidence of arousal was perfectly clear. The leakage of pre doubled as Shining’s hooves gently rubbed around Dusk’s head, the soft fur of his fetlocks teasing the veins running down his length.

“Oh, wow.” Dusk shuddered, his eyes fluttering shut for a moment. “No wonder I went off like that earlier.”

Shining kept rubbing. His hooves went a little further down, then a little further up, massaging Dusk’s girth as his own body pushed forward and back. “Hm?”

“At the market,” Dusk said. “When I—ah, touched you.” His cheeks coloring, he said, “I’d never felt anything like that before. Touching myself had always felt good, but when I brushed against your coat—I never knew how good touching another pony like that could feel.” His blush got even cuter. “Especially you.”

Shining blushed too. He kept rubbing Dusk’s shaft, his hips pumping steadily as he jerked his brother off. He could only make it around halfway down without losing his balance, but from the little moans that kept escaping Dusk’s throat, he could tell it was having an effect.

“I...guess you’d believe me if I said the same to you?” Shining said. “Making you feel good, that is. It just feels...really nice.” He bit his lip, then broke out into chuckles. “Especially now that there’s so much of you to make feel good.”

“Hehe.” Dusk grinned down at him. “You’re really doing a good job. Seriously, I—” He stopped, his eyes flying wide open. “Ooooh.”

Dusk let out a bizarre, low-pitched moan. Shining felt his brother’s body tremble, his cock throbbing as Shining’s length slid against it. “Oh, geeze,” Shining said, panting. "Dusk, you're so...warm."

"Mmff." Dusk closed his eyes, then shuddered when Shining pumped his hips forward. Shining kept going, humping his "bigger" brother's cock for all he was worth. “Oh—oh—yes.” Dusk’s whole face was red, his cheeks puffy with arousal. “Keep going—keep going.”

Shining had little choice—he was set to a rhythm, each hump of Dusk's massive flare in time with his heartbeat. His balls slapped heavily against Dusk’s flare, already refilling with cum. Shining couldn’t remember the last time he’d cum three times in a day—let alone this frequently—but this insane sort of pleasure couldn’t help but turn him on further.

He wasn’t in control anymore. Dusk was in complete control—or rather, his stallionhood and mounting arousal were. “Oh,” Dusk moaned, panting, his big legs quivering. “Oh, Shining. I’m almost there. I’m almost there. I’m almost—ngargh!”

Shining was blasted back, a torrent of cum erupting from Dusk’s slit and violently pushing him back. Dusk just kept moaning happily, bellowing with total pleasure as the force of his orgasm drove Shining to his knees, each gallon-sized spurt of spunk splattering against his “little” brother’s chest. In no time at all, Shining, and the rest of the room around him, had been completely covered by Dusk’s hot cream. He could hear Dusk’s balls churning, sloshing as they expelled more and more of their seed, could feel the floor trembling as Dusk’s moans and squirming made the whole room shake.

When he came out of it, Dusk was breathing heavily. His messy mane was matted with sweat, draping over one eye. “Ooh,” he groaned, his eyes fluttering shut. “Ooh. Yes, yes. It feels so good. Ooh—yes!”

And he began to grow.