A Slave for Love

Not long after that, Chrysalis had ordered the real attack on Canterlot, and been soundly defeated. As Thorax lay in the rubble, his heart ached, realizing while he was here he could never have the kind of pure friendship he’d seen those ponies share so easily. He bit his lip - he loved Pharynx, but maybe his connection was toxic… And he wanted so badly to get away from the love-drinking vampirism of his hive…

Fighting his heart, Thorax slipped off in the confusion before anybody could realize he was leaving, trying to ignore the part of his brain screaming that he needed to stay with Pharynx, please him, serve him. For once, Thorax thought maybe he was free from his big brother’s dominating control over his whole being, even though he ached to return every day.

***

When Thorax did return to the hive after so long, he kept his own extra anxieties secret from his pony friends. How could they understand what he was feeling? The bubbling combination of fear and love, for his own brother, nonetheless…

Thorax was incredibly relieved not to run into Pharynx while the mission was ongoing. He knew, in any form, he would have submitted instantly once he met his brother - he would have been so ashamed if his friends had seen him that way, grovelling at his brother’s hooves and begging for his cock.

And then when he transformed, Thorax felt certain this would herald a new stage in their relationship - a thought that at once pleased him and terrified him. Did he really want to be Pharynx’s equal? His… superior, even? The submissive changeling was uncomfortable with authority, but now he was the hive’s leader, it seemed, and it seemed like that would have to extend to Pharynx too, right?

Pharynx finally returned a day later, looking exhausted. He’d been on patrol again, scouting the whole area diligently as he heard warning of an incoming attack… Unfortunately for him, he’d flown around exactly in the area where Thorax and his group had been before, and were no longer.

“What. Happened?” he snarled, storming up to the tallest changeling in the middle of the room, glaring and buzzing his wings at the others. “You all look like prissy, pathetic, ponies!”

Pharynx stomped his hoof and several changelings jumped back in alarm, before someone piped up:

“Thorax taught us we don’t need to t-take love to survive… We can live off of GIVING love!”

Pharynx was so surprised by the mention of his baby brother, he didn’t protest that statement, although he felt it was ridiculous. Instead, he narrowed his eyes, trying to make sense of Thorax being mentioned, scowling as he slowly turned to face the tall green changeling in front of him.

“Thorax?!” he hissed, glaring as he hovered upwards to look his brother in the eye. “Is that really you?”

“O-oh, hey, Pharynx,” Thorax said, trying to hide the panic in his voice. “L-long time no see!”

Pharynx didn’t say anything. Instead, he socked Thorax hard in the face, sending him tumbling to the ground, looking furious as he stared down at his brother again.

“You abandoned our hive! You’re not a leader. You’re a TRAITOR!” he spat, turning around and buzzing away from Thorax, who groaned as he rubbed the bruise he was developing around his eye.

“Should I go after him, King Thorax?” one changeling asked, as they peered down the tunnel Pharynx had taken.

“N-no,” Thorax said, bowing his head with shame. “I’ll… I’ll fix it, myself.”

***

Despite his new, taller physique, Thorax still trembled as he crept into the cave his brother was resting in. He had some kind of power over him - even now, he felt cowed, submissive in his very presence.

“Hello, little brother,” Pharynx hissed, without even turning around to look at him. “Come to try and talk some pony grubshit into my head, too?”

“N-no! I mean,” Thorax floundered as Pharynx turned to look at him, those purple eyes glowering right at him. “It’s not… it’s not grub… it’s true, Pharynx, you saw everybody else…”

“I see you too,” Pharynx said, rising to his hooves. “And you’re a traitor and a false king. You aren’t fit to lead us.”

Thorax swallowed, trembling, but willing himself to stand up for himself.

“Why would you say something like that, Pharynx?” Thorax said, frowning. “I defeated Chrysalis. And, I helped the rest of the hive with their metamorphosis… so if you could jus-”

“That’s not how I hear it,” Pharynx interrupted, sneering. “I hear you got your little pony friends to do all the dirty work for you.”

Thorax tried not to shrink back from the accusation, but before he could say anything, Pharynx went on.

“And I say it… because we both know what your real place is, Thorax.”

A beat. Thorax licked his dry lips, as Pharynx continued, his voice dangerously low and his grin all fangs.

“Underneath me, being pounded into the dirt of this hive as I claim you for my own, isn’t that right?” Pharynx growled, stepping towards Thorax. “You may have the rest of the hive fooled, but I know what you really are - a pathetic little eggdump who isn’t fit for anything except being bred and used.”

Thorax felt himself getting dizzy, feeling sick and aroused all at once. He’d thought things would change between him and Pharynx, but the shorter, more aggressive changeling was dominating him as easily as ever. Thorax gulped, shaking his head, both to say ‘no’ and to clear of the lewd thoughts beginning to cloud his mind.

“Y-you’re wrong, Pharynx,” Thorax said, hesitantly. “I’m a good leader… Look how I’ve changed…”

“Yeah, like I said. You look ridiculous - like those loser pony friends of yours.”

Thorax frowned. Buoyed by his newfound confidence after making several true friends, he wasn’t about to take a comment like that lying down, as much as he hated confrontation.

“Pharynx, stop! You… you don’t understand yet, but Spike… and all my other friends… they’re really great!” Thorax smiled uneasily. “And they’re strong, too! P-powerful…”

Thorax trailed off. Pharynx had sat on his haunches, and was smirking cockily, eyes narrowed - but Thorax wasn’t looking at his face. Between Pharynx’s legs, his long, thick ovipositor slowly slithered out, pulsing in the cool air.

“Maybe so,” he said, with a smirk. “...But you’d trade them all for one taste of me, wouldn’t you?”

“N-no!” Thorax said, but he didn’t sound certain.

“Come on, Thorax,” Pharynx hissed. “I’m doing this… out of love. You’ll always be my brother. I may not respect you as a leader, but I can’t stand to see you so...needy.”

As he spoke that last word, Pharynx leaned in, stroking a chitinous hoof along Thorax’s back-plating, feeling him shudder and suppress a moan in response. Thorax closed his eyes, his face a picture of the inner tension inside him, rooted to the spot as he tried to stop himself from going back to this, submitting to his brother once more.

“I think my ovipositor was the real reason you came back, wasn’t it?” Pharynx continued. “You wanted… needed to feel it inside you, just one more time?”

“N...no,” Thorax replied, but it was a much weaker protest this time. He’d come here to help his friends - but he’d be lying if he said he hadn’t been thinking about Pharynx plunging into his body again and again while they were apart…

And he knew, those fears about Pharynx catching them had been tinged with a sickening arousal, at the idea of him finally being exposed for the worthless whore he was, powerless to do anything but moan with lust as he was defiled and degraded in front of his new friends.

“Just admit it, Thorax,” Pharynx growled, circling his younger brother. Somehow Thorax still felt smaller, weaker, despite his transformation. “I can smell the stink of lust coming off of you. You want this. Admit you only came back for the chance to worship my shaft and maybe… I’ll let you.”

“Pharynx… please,” Thorax started, unsure what he was pleading for. The temperature in this part of the hive seemed to have risen by a hundred degrees since he entered, and he was starting to think maybe it was a bad idea to come alone… It made it harder to not give in to temptation.

“I can.. Practically taste how bad you want this,” Pharynx whispered in Thorax’s ear.

“Oh Chrys- Cel… Oh Pharynx!” Thorax moaned, squeezing his eyes shut, pawing the floor as his wings flared from under his carapace indecisively.

Time seemed to stretch on and on, as Thorax fought with himself, knowing he should leave, but not able to bring himself to move.

“...Do it,” he finally said, softly.

“Do what?” Pharynx said, sneering cruelly. “Tell me.”

“Ph-Pharynx… please,” Thorax groaned. “M-mount me! Fuck me, I need it! Oh, please, please, I need to feel you inside…”

“Crouch down, slut,” Pharynx ordered. “Show me how bad you want this.”

Instantly, Thorax dropped his haunches low to the floor, screwing his eyes shut with humiliation… and need. He felt Pharynx mount him again, and he sighed at the familiar feeling, biting his lip as he pushed his rump high in the air, trying to meet Pharynx’s crotch. He was more slender now, more tapered, and with a whimper as Pharynx’s ovipositor slowly teased at his entrance, he realized the new changes in him would make this penetration a tight fit.

If Pharynx realised or cared about that, he didn’t show it. With forceful lust bordering on anger, Pharynx’s hips shunted forwards, and Thorax gasped and panted, gritting his teeth as he was thoroughly stretched open by his brother’s shaft. It felt at once alien and familiar, being claimed again by his big brother, with his new, more slender body… He moaned despite the pain of his hole being forcefully opened so wide, feeling Pharynx behind him, spreading his hooves so he could plunge slowly in and out with agonizing finesse.

“Tell me why you came back, Thorax,” Pharynx demanded, his voice even and cool as he worked that throbbing great plunger in and out of his brother’s poor hole, stretched taut around him. “It was because you need this, wasn’t it?”

“Y-yes,” Thorax replied, weakly, moaning in shame and lust. “I b-belong under your hooves, brother!”

Pharynx snarled with satisfaction as he shoved his length hard back inside Thorax’s muscular tightness, eliciting a strained-sounding squelch and an equally strained squeal from the changeling he was rutting. His hooves dug into Thorax’s sides as he roughly pounded the taller changeling like he’d never done before, unleashing his anger, betrayal, and love, all at once, on the pathetic specimen that dared to come crawling back to him.

“You a-are so far below me,” Pharynx hissed, angrily. “You’re below even the dirt my hooves walk on.”

Thorax nodded, panting desperately as his needy hole was forcefully filled over and over, his own ovipositor throbbing below him from the sheer passion of Pharynx’s perverted breeding. Thorax would have responded verbally, but before he could he felt one of Pharynx’s hooves smash into the back of his head painfully, forcing his head down.

“Wor-worship it, slut! Worship the ground my hooves have touched!”

Thorax complied instantly, not even questioning the act of obedience, mindlessly serving the dominant changeling who was thrusting into him again, delivering to new peaks of ecstacy… and new depths of depravity. With his slender neck bent low to the ground, Thorax kissed and nuzzled the dirt as if it were something precious, running his tongue over the grooves the hard edges of Pharynx’s hooves had left.

“Ngghh… good little f-fuck toy!” Pharynx hissed, mockingly. “How do you think everybody else would feel if they could see their new leader now?”

Thorax moaned and thrashed slightly, gritting his teeth. The idea of such a humiliation tugged at his libido, but also filled him with horror.

“They’d know what I know th-then, wouldn’t -NGH!’ they? You’re not a real leader… You’re a worthless shaftsleeve…”

Thorax groaned, teetering on the edge of fantasy, feeling himself being dragged into Pharynx’s dark world, one where he controlled Thorax, and Thorax loved it that way. The eager thrusting into his hole was getting faster, more intense now, as Pharynx insisted on hilting in Thorax’s already-stretched passage again and again.

“I-if you want my cum… b-beg for it,” Pharynx hissed, feeling his little brother tensing around him, sensing the mood in the air. “Or I’ll p-pull -GNR- out, and finish on the floor. It’s more worthy of my seed than you are…”

Desperately, Thorax, gasped, thrusting his rear urgently back against Pharynx’s invading length, shuddering at the way it plunged so deeply inside his tight, sensitive canal. He needed that shaft inside him, needed to feel Pharynx’s hot fluid spilling into his passage.

“Pharynx, please, please, cum insi-inside me!” Thorax moaned, feeling the thrusts getting more erratic and forceful now. “Please mark me with your hot ooze, l-let everybody see I’m n-not a leader, I’m just your f-fuck toy!”

Pharynx hissed in pleasure, his thrusts cruel and forceful as he shoved his swollen tube in and out of Thorax, grunting and thrusting as hard as he could as Thorax wailed softly in a mixture of bliss and pain, hungry for his oozing fluid to fill him completely…

“Gahh! Ngghhh! OHHH!” Thorax came hard, firing brightly-colored slime onto the floor, panting and gasping as his hole clenched around his big brother at the very instant Pharynx began to cum inside him.

Thorax moaned, his world full of lights and bliss and shame, his cries suddenly rising an octave as Pharynx yanked his throbbing length hard out of his hole, spurting it all over his backside, several spurts oozing down his flank, marking him completely. He whimpered, his rear empty as his orgasm slowly ebbed away, feeling Pharynx’s cum burn into his chitin, as if he’d be forever stained by it.

“Slut,” Pharynx said, roughly, kicking the dirt. “Be back tomorrow so I can make up for lost time.”

His breathing was ragged, but he was trying to compose himself as he flew towards the exit - unlike Thorax, who lay in a crumpled heap on the floor, sticky ooze coating his body as he panted, breathless.

“Oh,” Pharynx added, as he turned back one last time. “And clean up the mess. I want all of my fluids inside you, one way or another.”

“Y-yes, sir,” Thorax replied, weakly, as he shuffled backwards slightly, clearing the thick, pungent slime off of the spongy, dirty floor with his tongue.

***

Looking back, Thorax could see he should never have gone to see his brother alone. Perhaps if he’d played the role of leader around him, things might have been different. But from that moment on, all Pharynx had to do was smirk the right way, or raise an eyebrow, and Thorax was trembling putty in his hooves.

Night after night, Thorax tried to persuade Pharynx of the virtues of their new lifestyle, trying to convince him his way was better… Of course, that convincing usually happened while he was underneath Pharynx, moaning his name, and usually ended with him blurting out how he was no leader, just a cumbucket for his own big brother.

“Ngh… Pharynx,” Thorax panted on one such occasion, as Pharynx heedlessly thrust his slimy shaft up into him. “Y-you should… ngh… come to the F-Feelings Forum sometime.”

“Oh yeah,” Pharynx said, smirking. “What feelings should I -GNH!- talk about? How good your tight hole feels around my ovipositor?”

“N-no, that’s not…”

“How ashamed I am to have to pretend a pathetic little -ngh!- weakling like you is the king? How hilarious it is that everybody e-else really thinks you’re anything more than a HOLE for a superior changeling to FUCK?”

Pharynx was really giving it to Thorax hard now, and soon he found he couldn’t even think about official business, mind swirling in a haze of pleasure and plunging, throbbing organs invading him over and over until he squirted his own load on the floor, furious at himself for allowing the… distraction, once again.

Over time, and no thanks to Pharynx, Thorax became a better leader, learning to be more assertive from his new friend, Ember, and getting more practice at dealing with the pressures of being king. Implementing more ideas from pony society helped keep everybody happy, and soon Thorax was proud to say he was leader of a hive of reformed changelings… All except one, of course.

That only made it more shameful when he was crouched down, face in the dirt, moaning with pleasure as his brother used him as a cheap sex toy. He was addicted to the feeling of his brother’s shaft inside him. Externally, Pharynx acted more and more erratically, aggressive, even, like there was a deep, hungry need to dominate inside him.

He released those frustrations every evening, sometimes in the day, sometimes both, on Thorax’s poor, abused hole, and Thorax often ended up speaking in a whisper with a hoarse voice the day after, worn out from crying out in passion. Pharynx’s domination was so complete, Thorax knew even if he’d wanted to say no, there would have been no chance of refusing his big brother.

Thorax didn’t know what to do - it wasn’t until a few months later, when his pony friends came to visit, that things would change again...