A Plan Gone Awry (Fate) [RELEASED] (Patreon)

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Themes: False Identity, Rough Sex, Voyeurism  

Summary: Wishing to prove herself better than her 'father' Arturia, Mordred decides she's going to pretend to be the King of Knights in order to seduce and NTR Shirou away from her 'father'. Of course, she doesn't realize that Arturia sees right through her schemes, as does Shirou. She doesn't realize Shirou knows exactly who she is, until she's in way too deep and no longer wants to get back out. 

-x-X-x-  

As Mordred stares at herself in the mirror, making sure everything is JUST right, she can’t help but adjust her outfit again, grimacing slightly at how tight it is in some places, but more importantly, at how stifling it is. She’s not used to wearing this much clothing. That might seem funny coming from the Knight of Betrayal, who more often than not was dressed in a full, concealing suit of armor, especially in battle, but that was that and this was this.

Full plate armor was one thing. Whenever Mordred WASN’T armored up for battle, she preferred a lot less clothing, and in this modern era, she’d even found that her preferred style of dress was not entirely frowned upon anymore, even preferred in some places. Wearing a crop-top and a pair of torn jean shorts was just how she rolled these days, when she was chilling.

But this wasn’t the time for chilling, nor was it the time for battle. Or at least, not the time for the sort of battle Mordred was most used to. No, this was still a battle… it was just a different type altogether. Looking at herself in the mirror, Mordred works on her faces. She looks… remarkably like her father, at the moment. Though, only remarkable to anyone besides herself. After all, emulating and mimicking Arturia was exactly what Mordred was TRYING to do right now.

You see, Mordred had a plan. A plan that involved stealing her father’s clothing and wearing it, that even involved adopting her father’s hairstyle, rather than her usual wild, untamed ponytail. It involved adopting her father’s everything, because Mordred was going to become Arturia, at least for a little while. She was going to play at being her father… so that she could finally get what was rightfully hers.

Shirou Emiya was an enigma wrapped in a riddle, as far as Mordred was concerned. HE probably wouldn’t agree, he’d probably say he was just who he was and that was that. But that WASN’T just that! Shirou Emiya was at the heart of far too much going on in this world to be just who he was. He was… he was enticing, in a way that nothing had ever been enticing before. Not even her father’s crown and throne had made Mordred yearn this much. 

It was fine though. She was the Knight of Betrayal, wasn’t she? Ever since arriving in this modern age, Mordred had spent a lot of time on the internet. She’d learned just what people were up to, and she knew exactly what she was going to do, both to get back at her father, and to finally show Shirou who the better lover was.

Put bluntly, Mordred was going to NTR Shirou Emiya from Arturia, by pretending to BE Arturia, and seducing him. Once she’d fucked him, once he’d found out how much better she was than her father, she would supplant Arturia’s place at Shirou’s side, and then it would be she who would have happiness and love, a-and more importantly, victory over the King of Knights!

Pushing off the bathroom sink, Mordred smiles and nods, even as she crosses her arms over her chest. She just as quickly wipes that smile off her face and uncrosses her arms. She doesn’t think either gesture looked particularly Arturia-like, and from this moment onwards, Mordred WAS, for all intents and purposes, her father. 

“I am Saber, King of Knights. Fear me.”

Snorting derisively, Mordred has to get herself under control one final time, before she lets out another sharp nod, schooling her features into the normal expression she sees on her father’s face all the time. Mild disappointment and bland whatthefuckever. It was time. It was finally time…

-x-X-x-

“Shirou. I’m home.”

As she steps into the Emiya House, Mordred furtively looks about, making sure no one else is around. She doesn’t SEE anyone, which is exactly as it should be, given she has it on good authority that her father is out for the evening, and so is everyone else in Shirou’s life.

“Oh? You’re back early, Saber! Come in to the kitchen, I’m just cooking up a small dinner, but you’re welcome to share it!”

Mordred’s initial plan had just been to seduce Shirou right off the bat, but the moment she hears the word ‘cooking’ fall from his lips… well, no plan survives first contact with the enemy, right? In this, at least, Mordred doesn’t even have to pretend to act like her father. Both she and Arturia have a distinct love for Shirou’s cooking, as does everyone else.

In a moment, she’s in the kitchen, barely remembering to act prim and proper as her father would in these circumstances, rather than shouting and demanding the food quicker as SHE normally would.

“Very well. I shall gladly wait.”

Sitting at the kitchen counter, it takes all of Mordred’s willpower not to squirm too much. She still fidgets, now and then, but she makes sure to be perfectly still and composed whenever Shirou looks over at her. He’s only given her a few glances at this point, but so far her disguise seems to be holding up quite well. Of course, she knows how much Shirou focuses on his cooking, how much he cares about getting it right, so that’s not a true test. The true test comes when he finishes making their plates up and brings one over to her.

Mordred lets the smallest smile cross her face as he hands her hers, and she bows her head as she thinks her father would in response to Shirou’s generosity.

“Thank you very much for the meal.”

Needless to say, Mordred herself would never bother thanking him for something she would expect regardless, but for now, she needs to play the part to the hilt. Once she’s shown Shirou had good sex with her is, she can go on to changing things like him expecting thanks for cooking when he really should just be her personal chef. Hm, maybe she’ll make him her personal chef.

Still, Mordred also knows how her father eats, so at least once she’s said thank you, she can inhale the meal placed before her without having to worry about manners. Arturia certainly wouldn’t. Shirou just chuckles in exasperated amusement, not seeming suspicious on the slightest as he watches her.

“Jeez, Saber. You just can’t get enough, can you?”

She’s not going to GET a better opening than that, now is she? With her plate cleaned and Shirou’s delicious cooking in her belly, Mordred turns her avarice on the man himself.

“No… No I’m not. And I think I want dessert now.”

Shirou blinks, but before he has a chance to react, Mordred is kneeling down before him, reaching out and pulling at his pants.

“S-Saber? So forward!”

Yes, she’s probably acting a bit out of character now, but then that’s kind of the point. Sex with her is SUPPOSED to be more fun than sex with Arturia, so this is where Mordred has to shine!

“Just go ahead and eat. I’ll help myself.”

That’s all she says, before popping his cock in her mouth. Shirou groans as she begins to suck him off, but to her surprise, he DOES actually begin to eat. She hadn’t expected that, if she’s being honest. Was he really ignoring her in favor of eating while she sucked his cock? That… annoyed her a little. Did he do this with Arturia? Or did Arturia not do this with him?

Hm, irritated as Mordred finds his actions to be, she can’t really do anything about them. After all, she was the one who suggested he eat in the first place. Still, she can provoke him a bit more. Sucking his cock down, inhaling it into her throat, Mordred also brings a hand up to fondle his balls. Shirou groans again, and after swallowing his current bite of food, he speaks once more.

“Jeez, Saber… you’re really going all out tonight, aren’t you? You’re not usually THIS eager.”

That causes a burst of satisfaction in the Knight of Betrayal. YES, that’s right! Praise her! She was more eager than her father ever would be! She was the best! Fall for her, love her! Deep-throating Shirou’s cock from there just feels like a realistic escalation, and though Mordred knows she has an incredibly lewd expression on her face as she sucks in her cheeks, she just doesn’t care. She’s winning, and Arturia is losing. There’s no way that she fails now!

“F-Fuck, Saber… here it comes…”

And like that, Shirou is filling her mouth with his jizz. Mordred’s eyes go crossed, but the instant that taste hits her tongue… she knows she has to have more. Drinking down his cum is both practical in that it creates no mess, and also it’s what she wants to do, because as she’s just discovered, Shirou’s seed is as delicious as his cooking. Just another reason that she NEEDS to have him as her own, NEEDS to steal him away from her father.

Pulling back off of Shirou’s cock with a pop, Mordred has never been so lust-drunk, as she stands up, her face flushed with arousal. Pulling down her father’s pants and undergarments, the Knight of Betrayal bends over the counter right then and there, presenting her skinny, pale behind to Shirou.

“Fuck me, Shirou. I need you inside of me, right now!”

Shirou raises an eyebrow at that, but does as he’s told, hopping out of his chair with his cock rapidly growing erect again.

“Man, Saber. You’re insatiable today.”

Mordred bites her lower lip, but as she feels his cockhead pressing into her slit from below, she can’t resist answering.

“That’s right, big boy… I am. I’m going to be insatiable every single day for the rest of your life. Now get that fucking dick inside m-EEEEEE!!!”

The Knight of Betrayal’s eyes go wide, her head tilts up, and her back arches as Shirou doesn’t wait for her to finish speaking before he slams home into her cunt. His cock fills her insides like nothing ever before it, and she moans wantonly as he pulls her back against his chest, one hand lightly clutching at her throat.

He holds her like that for a moment, before giving her an experimental thrust, deep inside of her tight, clenching cunt.

“My, how tight you are today, Saber.”

Mordred whimpers in need.

“And how WET you are. You usually require more foreplay. Are you becoming a SLUT, Saber?”

She wiggles, trying to get him to move around more. But he doesn’t, so in the end, she has to result to talking.

“Just… j-just fuck me already, you bastard.”

“Such naughty language from my beloved Saber. But I suppose, if that’s what she wants…”

With that said, Shirou gives her exactly what she asked for. He fucks her. And it’s not anything like what Mordred thought it would be. Oh sure, she thought the sex would be good. But she also thought she’d need to take Shirou in hand and teach him how a REAL woman fucked. It wasn’t like he could be all that amazing at it with such weak girls (and Mordred’s father) as his lovers. 

Put simply, she’d expected to be in control. Instead, she was very much NOT in control, neither of the situation nor of herself as she moaned expressively, eyes going crossed from the mind-numbing pleasure that was Shirou’s cock filling her cunt again and again. It wasn’t supposed to be like this. She was supposed to teach Shirou how to please her, not find herself ahegaoing on his damn dick!

But… maybe this was for the best. Maybe this was what she needed to steal Shirou away from her father. All she had to do was be a better fuck than Arturia after all, right? Orgasming again and again around Shirou’s big fat cock sounded like an EXCELLENT way to do so. Until, multiple climaxes later, Mordred hears a voice that cuts right through her constant orgasms, causing her eyes to roll forward in her head again as she finds herself face to face with the woman she’s been trying to mimic.

“So, how would you rate her?”

Arturia is studying her expression from the other side of the kitchen counter with a curious gleam in her eyes. She’s watching Mordred get fucked from behind by Shirou like… like it’s nothing. Like she doesn’t care at ALL.

“She’s good. Maybe not as good as you, but she’s got room to grow still, you know?”

“Hmph. I suppose she would.”

Mordred gasps and groans, moaning and mewling. She tries to form words, but her mind is all jumbled up by Shirou’s big cock, which even now is still rearranging her insides nonstop with his constant pistoning thrusts. Leaning forward, Arturia reaches out and places two fingers under Mordred’s chin, lifting her head up so that their eyes meet.

“Your mistake was in assuming that Shirou was a thing to be stolen in the first place, rather than a man with his own will and choices to be made. The idea that you could steal him from me at all when I share him already with multiple women was laughable, Mordred. I hope you’ve learned your lesson by now.”

Mordred hisses, and finally gets out a single shaky word as Shirou continues to fuck her from behind.

“H-How?”

Arturia just smiles thinly.

“Do you think yourself the only one capable of using this modern age’s wonders? I read your browser history, silly girl.”

Mordred’s eyes widen, her face bright red with embarrassment at the thought of her father seeing not only her research on how to successfully mimic her, but also her… other searches. Arturia just smirks and pulls her hand back, looking as imperious as ever. Mordred, meanwhile, has never felt so small. But that doesn’t change the fact that the King of Knights is right, and the more Shirou fucks her, the less Mordred cares about her overall humiliation.

This… this is fine. This is all perfectly fine. Maybe she’s not getting exactly what she wanted, but she’s in now. And she intends to stay that way.