Diamond Dominion

by Caladis

Rating: mature
Tags: Drama, My Little Pony: Friendship is Magic, Dark, Porn, Sex, Filthy Rich, Spoiled Rich, Non-consensual, Diamond Tiara
Length: 4407

Diamond Tiara is tired of her mother, Spoiled Rich, so she deals with her

This is a commission for superfun

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Diamond Tiara is 18 and ready to take her place within the family business. Looking over the books, she realizes that her mother, Spoiled Rich, is bankrupting the family. Her father doesn't have the energy to deal with it and doesn't care if Diamond handles it.

Her solution... frame her mother for cheating so her dad will divorce her.

Story Contains: Sex, Mother/Daughter, Futa, Cheating, Impregnation.

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Published 2024-10-09 17:50:01 UTC
Last updated 2024-10-09 17:50:01 UTC

Cutting Ties, Claiming Power

Diamond Tiara had always known she was destined to take over the family business. Ever since she was a filly, she'd watched her father run the operation with the kind of ruthless efficiency she admired. But as she turned eighteen, ready to step into a more active role, she quickly realized things weren’t as smooth as they once seemed.

She sat in her plush office chair, the dark wood of her desk reflecting the sunlight filtering in from the massive windows. Stacks of financial reports and ledgers surrounded her, numbers running through her mind faster than she could jot them down. She knew expansion was the key - branching out into new ventures, getting a stronger foothold in the market - but something wasn’t adding up.

Diamond bit her lip, a small wrinkle forming between her perfectly groomed brows. The expenditures were off, way off. She scrolled down the columns again, her eyes narrowing as she saw the same category consistently draining bits away. ‘Personal expenses’ under Spoiled Rich’s name. Her mother had always been vain, but this was on another level. Hundreds of thousands of bits, spent frivolously - luxury trips, extravagant dresses, jewelry that could rival the royal treasury.

She slammed the ledger shut, the sudden noise echoing through the office. Anger coursed through her veins as she stood, pacing the room, her heels clicking sharply against the marble floor. It was so typical of her mother, to squander resources on herself without a second thought for the future of the business, for her. If this continued, there wouldn’t be anything left to expand. No new ventures, no stronger market hold - just a legacy of waste.

She stopped at the floor-to-ceiling mirror that adorned one side of the room, catching a glimpse of herself. The reflection showed a young mare, poised, powerful, her body matured into the kind of beauty her mother could only buy through a surgeon. Her gaze hardened as she thought of Spoiled, lounging somewhere expensive, sipping champagne bought with her future.

Diamond’s lips curved into a sly, knowing smile. If her mother wanted to play dirty, then she'd play too. After all, she wasn’t a little filly anymore. She had the looks, the brains, and now, the motivation to take over completely. Her pulse quickened at the thought of control, of bending everyone, even her own family, to her will.

But first, she needed to put her mother in her place. But how?

Diamond stormed into her father’s office, not bothering with the formalities of knocking. Filthy Rich sat behind his oversized mahogany desk, glasses perched on the tip of his nose as he glanced up from his paperwork, startled by her sudden entrance.

“Dad, we need to talk,” Diamond began, her voice sharp, laced with the frustration she’d been bottling up.

He sighed, setting his pen down as if he already knew where this conversation was headed. “What is it now, Diamond?”

“It’s Mother,” she snapped, tossing the financial reports down onto his desk with a thud. “Her spending is out of control. Do you have any idea how much she’s bleeding out of the business? She’s sinking us with every stupid vacation, every designer dress.”

Filthy Rich rubbed his temples, the weight of her words pressing down on him like a boulder he couldn’t lift. “I know, Diamond… I know.” His voice was tired, worn, like he’d already given up long ago.

“Then why haven’t you done anything about it?” Diamond demanded, her blue eyes blazing with a mix of anger and disbelief. “You’re the head of this family, the head of the company! You can’t just sit back and let her bankrupt us.”

Her father leaned back in his chair, eyes drifting toward the window, his expression distant. “It’s not that simple, sweetheart,” he muttered. “I’ve tried talking to her, I’ve tried putting my hoove down. But your mother… she’s impossible. She hasn’t listened to me in years.”

Diamond crossed her arms, narrowing her gaze. “What do you mean ‘impossible’? You’re her husband. You have more control than you think.”

Filthy let out a heavy sigh, running a hand through his thinning hair. “I’m tired, Diamond. Tired of fighting with her. She hasn’t… well, she hasn’t exactly been… affectionate lately, if you know what I mean. It’s easier for me if she’s off on her little trips, spending time at the spa or buying things. I don’t have to deal with her that way.”

Diamond’s mouth twisted in disgust. “So you just let her waste away our money because it’s more convenient for you?”

Her father’s silence was answer enough. His eyes stayed fixed on the papers in front of him, his once proud shoulders now slouched, defeated. “I don’t know how to stop her, Diamond. I don’t know how to deal with her anymore.”

Diamond’s lip curled into a sneer. He was pathetic, giving up so easily. “Well, if you’re not going to do anything, then I will. You’re letting her destroy everything we’ve built. She needs to be put in her place before there’s nothing left.”

Filthy looked up at her, his gaze heavy, but there was something resigned in his eyes. He waved a hoove dismissively. “Do what you must do, Diamond. Just… don’t tell me about it. I don’t want to know.”

Diamond’s smile was slow, cold, satisfaction rippling through her. “Oh, don’t worry, Dad. I’ll take care of everything.”

* * *

Diamond Tiara strode through the grand, crystalline halls of Princess Twilight’s old castle, her steps echoing softly against the polished floors. The castle had an eerie quiet to it now, the vibrant energy it once held subdued ever since Twilight had moved to Canterlot. In her place, Starlight Glimmer now lived there, overseeing the small town with far less pomp and circumstance. Diamond made her way to Starlight’s study, where she knew the former student of Twilight would be waiting.

Starlight was sitting behind a large desk, reading through a series of scrolls when Diamond entered. She looked up, offering a warm smile. “Diamond, what brings you here?”

Diamond cut straight to the point, her voice calm but with an undercurrent of something darker. “I need your help, Starlight. I need two potions.”

Starlight raised an eyebrow, setting down her scrolls. “Potions? What for?”

“A love potion,” Diamond began, pacing slightly. “And… a futa potion.”

Starlight blinked, taken aback. “Those are some pretty serious requests. Why do you need them? You know a love potion isn’t something to be taken lightly, and… well, the other one—" she trailed off, clearly curious but concerned.

Diamond met her gaze, her expression unwavering. “I have a very special mare in mind. I need to get her pregnant.” Her words hung heavy in the air, deliberate and final.

Starlight’s brow furrowed in confusion. “Pregnant? Why not… I mean, why not go about this the regular way? Love and… well, you don’t usually need potions for foals.”

Diamond smirked, a cold glint in her eyes. “It’s not about love, Starlight. It’s about securing something more important. She won’t do it willingly, so I’m going to need a little… help.”

Starlight’s face softened, clearly misunderstanding the situation. “Oh, I see now. This is about marriage, isn’t it? You want to tie her down, have foals, start a family. You don’t need to explain it all to me. I get it.” She stood from her desk, moving toward a small cabinet lined with different colored vials. “I didn’t realize you were so serious about someone, Diamond. Who’s the lucky mare?”

Diamond’s smile didn’t falter. “That’s my business.”

Starlight hesitated for a moment, glancing back at Diamond before pulling two vials from the cabinet—one a soft pink, the other a shimmering violet. “I normally wouldn’t give these out, you know, but… I don’t want to stand in the way of love, marriage, or foals.” She handed the potions over carefully. “Just… be careful with these. Potions like this, especially a love potion, can have consequences.”

Diamond took the vials, her fingers tightening around the glass, her mind already racing with the possibilities. “Oh, I’ll be careful,” she replied with a small, calculated grin. “Thank you, Starlight. You’ve been very helpful.”

Starlight smiled warmly, oblivious to the darker intent that lay beneath Diamond’s calm exterior. “Good luck, Diamond. I hope it all works out for you.”

Diamond gave a slight nod, turning on her heel and leaving the study, the potions secure in her bag. Now, with the tools she needed in hand, the real work could begin. She could already imagine the look on her mother’s face when her perfect little world was turned upside down.

* * *

When Diamond Tiara returned to the mansion, the air felt thick with expectation. She stepped through the grand front doors, her hooves clicking against the polished floor. From the living room, she could already hear her mother, Spoiled Rich, speaking in that haughty tone she always used, her words dripping with entitlement.

Spoiled was lounging on one of the plush couches, her mane perfectly coiffed as she skimmed through a catalog. Diamond lingered at the edge of the room, watching her mother’s idle movements, the way she barely acknowledged her presence, as if Diamond was just another accessory in the lavish life Spoiled had built for herself.

Perfect.

Diamond took a deep breath, slipping into the room with a calculated grace. “Mother, I didn’t expect you to be here,” she said smoothly, her tone warm and sweet, belying the dark intent bubbling beneath.

Spoiled didn’t bother to look up, flipping a page with a dismissive flick of her hoof. “The trip was a waste of time. Nothing worth buying.” Her voice was flat, uninterested.

Diamond smiled tightly. “In that case, why don’t we have a drink? Something to relax.”

Spoiled glanced up briefly, arching an eyebrow before turning back to her catalog. “Fine. Make it quick.”

Diamond walked over to the small bar set against the far wall, her mind racing as she carefully selected a bottle of their finest cider. She uncorked it, the scent of sweet apples filling the room as she poured two glasses. Her heart pounded as she discreetly uncorked the small vial of love potion she’d gotten from Starlight, watching the shimmering liquid swirl as it mixed seamlessly with the cider.

With both glasses balanced on a tray, she approached her mother, offering one with a delicate smile. “Here you go, Mother. I thought we could toast to… family.”

Spoiled took the glass without question, lifting it to her lips for a delicate sip. Diamond watched closely as the potion took effect, working quickly to soften her mother’s sharp features. Spoiled’s eyes grew unfocused for a moment, then slowly turned toward Diamond, something strange and unfamiliar stirring within them.

“Diamond,” Spoiled murmured, her voice suddenly warm, almost… affectionate. “You’re such a fine young mare now. So beautiful… so strong.”

Diamond felt a rush of satisfaction at the shift in her mother’s tone. “Thank you, Mother,” she replied softly, leaning in just enough to close the gap between them.

Spoiled’s eyes gleamed, filled with a new kind of admiration—one that went far beyond the typical, cold approval she usually doled out. She set her glass down and moved closer, her hoof brushing gently against Diamond’s cheek. “Why didn’t I see it before… how perfect you are?”

Diamond smirked, watching her mother fall deeper into the effects of the potion. Her heart raced as she reached into her bag for the second vial - the one that would complete her plan. She uncorked it and, without hesitation, drank the shimmering liquid. Almost instantly, she felt the magic work its way through her body, a surge of power as her form shifted, and she felt herself grow hard beneath her coat, a new appendage forming with a firm throb.

Spoiled’s gaze was hazy, filled with desire as she leaned into Diamond, the love potion making her pliant, eager. Diamond grinned, her tail flicking with anticipation. “I think it’s time I showed you just how perfect I can be, Mother,” she whispered, stepping forward to take what was now hers.

Spoiled didn’t resist, her eyes filled with adoration as Diamond pushed her back onto the couch. The living room, once a place of cold decorum, was about to become something entirely different.

“You've been wasting all day on shopping,” Diamond growled, her voice rough and dripping with authority. “Now it’s time you learned what it feels like to get exactly what you deserve.”

Spoiled licked her lips, trembling, her hand reaching out but stopping short. She wanted it - more than she’d ever wanted anything - but the power shift left her quivering. Diamond wasn't going to wait any longer. Grabbing her mother by the hair, she yanked her forward, pressing the flushed face against the base of her cock. The heat radiated between them, her girthy length twitching with impatience.

“Take it in your mouth,” Diamond commanded, the low rumble of her voice sending shivers down her mother’s spine. Spoiled moaned, her breath hot against the swollen head as she eagerly obeyed, lips parting to wrap around the thick shaft.

Diamond’s grip tightened in her mothers hair, guiding her lips along the thick length, each inch disappearing into her wet, eager mouth. The spoiled wannabe princess moaned around it, her tongue swirling, trying to keep up as Diamond thrust in deeper, her cock swelling with need. The warmth of her throat constricted around the tip, and Diamond let out a groan, her hips bucking forward with impatience.

“Fuck, you take it so well,” Diamond growled, pushing deeper, holding her there, watching her mother’s eyes water as she struggled to breathe, her throat working around the pulsating shaft. She loved the way her mother gagged, drool dripping down her chin, struggling yet wanting more, eyes glazed over with pure lust.

With a harsh pull, Diamond yanked her back, cock slipping from her lips with a wet pop. She wiped the slick mess across her mother’s flushed face, smearing the spit and precum across her cheeks. Spoiled gasped for air, her chest heaving, desperate for what came next.

Diamond wasn’t about to wait. She spun her around, pushing her onto the bed, ass high in the air, presenting herself like the needy little slut she was. The scent of her arousal filled Diamond’s nostrils, her pussy dripping, glistening in the dim light. Spoiled was trembling, back arched, pressing her hips up, offering everything.

Without hesitation, Diamond lined up the head of her cock with her mother’s soaked entrance. She teased her for a moment, sliding the tip up and down her slick folds, the heat unbearable. The spoiled bitch whimpered, her hips moving back, begging for it, needing to be filled.

“Tell me you want it,” Diamond growled, leaning over her, pressing the swollen head against her entrance but not giving in just yet.

“Please, fuck me,” Spoiled moaned, voice breaking. “I want it. I need it. Fill me with that big cock. I’ll take it all. Just - please!”

That was all Diamond needed to hear.

She thrust forward, burying herself to the hilt in one powerful stroke. The spoiled bitch screamed, her body jolting, stretched wide around the thick shaft, her pussy clenching hard as it struggled to take all of Diamond’s length. Diamond groaned in response, the tightness overwhelming, her hips driving forward again and again, relentless.

Spoiled’s back arched, her face pressed into the sheets, moaning with every thrust, every inch of Diamond’s cock sliding deeper, hitting spots that made her cry out in pleasure. “Fuck, you’re tight,” Diamond grunted, her hooves gripping her mother’s hips, using them for leverage as she fucked her harder, each slap of their bodies echoing through the room. “I guess you haven’t been cheating on daddy after all, you’re just not putting out at all.”

Spoiled was incoherent, her mind lost in the heat, the overwhelming sensation of being taken so completely. Her hooves clutched at the sheets, her own hips moving back to meet Diamond’s brutal pace, her cunt dripping, soaking them both.

Diamond felt her climax building, the tight squeeze of her mother’s pussy milking her cock, urging her on. “You’re gonna take all of it,” she growled through gritted teeth, the edge of control slipping. Her thrusts grew faster, rougher, her cock slamming into her mother’s trembling body, making her gasp and shudder.

And then it hit. Diamond drove in deep, her cock pulsing as she exploded inside her, thick jets of cum flooding Spoiled’s pussy. Spoiled cried out, her own orgasm ripping through her, her body convulsing, clenching around Diamond as she came hard, her juices mixing with Diamond’s release.

Diamond held her there, buried deep, riding out the waves of pleasure, watching her mother shudder beneath her, filled and claimed. When she finally pulled out, Spoiled collapsed, her legs shaking, cum dripping from her swollen pussy.

Diamond looked down at her, smirking. “Told you you’d get exactly what you asked for.”

Diamond Tiara stood over her mother, breathing hard as the last shudders of their encounter faded into the heavy air of the living room. Spoiled Rich lay beneath her, flushed, her eyes half-lidded and filled with a dazed sort of satisfaction. Diamond's pulse was still racing, but her mind was already beginning to sharpen again. She knew the potion wouldn’t last forever, and soon, she’d return to her normal self.

She pulled away carefully, stepping back as Spoiled’s gaze lingered on her, still locked in that dreamy haze. Without a word, Diamond straightened herself, giving one last glance at her mother, who now lay relaxed and silent on the couch. Spoiled didn’t say anything - didn’t protest, didn’t even ask what had just happened. Her eyes, still softened by the effects of the love potion, followed Diamond briefly before drifting away, her thoughts clouded and distant.

Diamond knew Spoiled remembered everything. The way her mother looked at her in those brief moments told her that much. But she also knew Spoiled wouldn’t say a word. Whether out of confusion, shame, or some unspoken understanding, her mother wasn’t going to challenge what had just happened. And Diamond preferred it that way.

Without a sound, she left the room, her steps quiet and deliberate as she made her way through the mansion. She was careful to avoid the staff and anypony else who might be wandering the halls. The last thing she needed was for somepony to see her in this state, still changed, still feeling the lingering pulse of the potion’s effects.

Diamond slipped into her room, closing the door behind her with a quiet click. She stood in front of the mirror, watching as her form slowly shifted back to normal, the magic of the potion fading away, leaving her once again just the mare she had always been.

By the time the change had fully worn off, Diamond allowed herself a moment of satisfaction. She had done what she came to do, and Spoiled… Spoiled would never be the same again. Neither would their relationship.

Tomorrow, everything would look like it always had on the surface, but they both knew. Neither of them needed to say it aloud. It was done, and that was all that mattered.

* * *

Two months had passed since that night, and the air in the Rich mansion had grown thick with unspoken tension. Spoiled Rich paced the bedroom, her once-pristine mane disheveled as she wrung her hooves nervously. She had been feeling strange for weeks now, and though she had tried to ignore it, the truth was impossible to deny any longer. She was pregnant.

She had spent countless nights thinking about how to handle this, but there was no easy answer. Her husband, Filthy Rich, was still oblivious - still under the impression that their cold, distant marriage was simply going through its usual cycle of neglect. But Spoiled knew the foal wasn’t his, and she couldn’t keep the truth hidden forever.

Tonight, she had no choice but to tell him.

Filthy was sitting in his study, reviewing some documents for the business when Spoiled nervously approached. Her hooves felt heavy as she stepped into the room, her heart racing in her chest. Filthy glanced up, frowning slightly at the sight of her standing in the doorway.

“What is it, Spoiled? You look like you’ve seen a ghost,” he remarked, his tone tired.

Spoiled swallowed hard, trying to find the words. “Filthy… there’s something I need to tell you. Something… important.”

He set the papers down, giving her his full attention now, his brow furrowing in concern. “What’s going on?”

She took a deep breath, her voice trembling as she spoke. “I’m… I’m pregnant.”

For a moment, there was silence. Filthy’s expression shifted from confusion to disbelief, and then, slowly, to something far more dangerous. His eyes narrowed, his jaw clenching as the weight of her words sank in. “Pregnant?” he repeated slowly, his voice sharp with suspicion. “That’s impossible. We haven’t…”

Spoiled winced, already knowing where this was headed. “I know… I know it’s not yours.”

The confession hung in the air like a thunderclap, and Filthy’s face darkened, anger rippling through him. He stood abruptly, the chair scraping loudly against the floor as he pushed it back. “Not mine?” His voice rose, trembling with fury. “Then whose is it, Spoiled?”

Spoiled flinched, stumbling over her words. “I-I… It’s not what you think, Filthy. I didn’t-”

“Didn’t what?” Filthy cut her off, his voice cold and sharp. “Didn’t cheat on me? Because that’s exactly what you did!” He paced back and forth, hooves striking the floor in hard, angry beats. “Who was it? Some stallion while you were off spending my bits on your vacations? Somepony here in Ponyville? Who?”

Spoiled’s heart pounded in her chest, panic setting in. She was desperate, grasping for a way out. “It’s not like that! Diamond – she-”

But Filthy’s rage only intensified at the mention of his daughter’s name. “Diamond? You leave her out of this!” he roared, his eyes blazing with fury. “Don’t you dare try to blame her for your mistakes. Diamond would never do something like that, not to me, not to this family. She’s nothing like you!”

Spoiled’s breath hitched, knowing she had lost the moment she spoke. Filthy’s love for their daughter was unwavering, and the thought that Diamond could be involved in any way was unthinkable to him. She had nothing left to say.

“I can’t believe this,” Filthy spat, shaking his head in disgust. “I trusted you, even when things weren’t good between us. And now this? You’ve destroyed everything.”

Spoiled’s eyes filled with tears, but there was no sympathy in Filthy’s gaze. He was done - finished with her lies, her selfishness. “I’m filing for divorce,” he said coldly, his voice like ice. “On the grounds of infidelity. And you’re leaving this house tonight.”

“Filthy, please-” Spoiled pleaded, but he was already walking toward the door, his anger shutting her out completely.

“Pack your things, Spoiled,” he said without turning back. “I don’t want to see you here when I wake up tomorrow.” With that, he stormed out of the room, leaving Spoiled standing alone, the weight of her choices crashing down on her.

She was being cast out - her perfect life, her status, everything she had worked to maintain, slipping away because of one mistake. But even as the tears streamed down her face, a part of her knew this was inevitable. The truth had a way of coming out, and now she had no one left to blame but herself.

* * *

Weeks passed, and the dust had finally settled. The divorce was swift - Filthy Rich had wasted no time cutting Spoiled out of both his life and his business. She was gone, her extravagant spending and entitled attitude no longer draining the company’s coffers. For the first time in years, the family business was stable, and it was all under Diamond Tiara’s control.

Sitting in her father’s office, Diamond leaned back in his chair, a quiet smile playing on her lips as she thumbed through the latest financial reports. The numbers were better than ever - steady profits, no massive holes in the ledgers where Spoiled’s reckless spending had once been. Her gaze lingered on the totals, the bits stacking up, and she couldn’t help but feel a deep sense of satisfaction. Now that the bleeding had stopped, the future looked promising.

She flipped through a few more pages, her mind already buzzing with ideas for expansion. The Rich family had always been known for its strategic ventures, and Diamond knew exactly where to take things next. Her eyes flickered over the map on the wall, her attention drawn to the smaller, underserved towns - places where the Rich family’s influence could spread cheaply and efficiently.

Hope Hollow and Appleloosa stood out immediately. Both communities were ripe for expansion, small but growing, and best of all, they weren’t fully tapped into the larger Equestrian economy yet. Hope Hollow had only recently started to recover after its own struggles, and Appleloosa, though a frontier town, was booming thanks to its apple trade and growing population. These places needed infrastructure, supplies, and investment - everything the Rich family could provide at minimal cost. Even the buffalo could be regular customers if they merchandised correctly.

Diamond’s mind raced with the possibilities. Establishing general stores in these locations, or even partnering with local businesses, would be a low-risk, high-reward move. She could position herself as not just a businessmare, but as a benefactor, bringing jobs and resources to these communities while quietly taking a cut of the profits. It was the perfect setup - one that would expand their empire without the exorbitant costs Spoiled had racked up.

Setting the reports aside, Diamond stood and approached the map, her hoof lightly tracing the lines between Ponyville and her two new targets. A slow, confident smile spread across her face. This was her moment. Without Spoiled’s interference, without anyone holding her back, the future of the family business was entirely in her hooves.

Hope Hollow. Appleloosa. They were just the beginning.

* * *

Author's Note

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