Cambrian’s Emporium of Everything (Multiple Settings)

Life’s Not Fair (Fate)

Commission

Themes: Mind Break, Master/Slave, Dom/Sub

Summary: Shinji Matou should be little more than an insignificant worm and in most universes he is. But not in this universe. In this universe, he's The Man.

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Irisviel von Einzbern was a homunculus. Albeit her circumstances were incredibly atypical as far as homunculi were concerned. Not only had the white-haired, red-eyed woman been allowed to spend nine years in a loving relationship with a human man, she’d also been allowed to continue existing past her initial purpose. The Third Grail War had been a complete bust on all fronts, and it was only thanks to Kiritsugu Emiya, the Magus Killer, that the Einzbern Family had not decided to retire her after the disastrous war.
 
Her beloved Kiritsugu was gone now, but Irisviel still had reasons for existing in the form of her daughter Illyasviel von Einzbern and their adopted son, Shirou Emiya. Illya was another way in with Irisviel’s life as a homunculus had not exactly been bog-standard. She’d been allowed to carry a baby to term the natural way, nine month pregnancy and all.
 
This had caused irrevocable changes to her doll-like body, including larger breasts, curvier hips, and the ability to lactate on command. Most human women would have stopped lactating by this point, but not Irisviel… and she likely never would, because the only way to fix the issue would be to put herself under the Einzbern Family’s power once more… and with Kiritsugu gone, Irisviel knew better than to do that at this point in time.
 
All of this was to say, for all that Irisviel made for an excellent approximation of a human being… at her core, she was a doll crafted for a man. And it had been a long time since she’d felt the touch of that man. It had been years since her beloved husband had passed and left her all alone with the children.
 
Even now, she felt the pang of his loss. Even now she wished she could feel his touch. As she rests in the bath within their home, Irisviel von Einzbern moans softly, her hands touching her own breasts as she molds and kneads and gropes at them. Until suddenly…
 
The sound of the bathroom door opening startles Irisviel something fierce, her red eyes snapping open from their lidded state and darting over to see who it is. There’s practically nobody who SHOULD be intruding on her bathtime like this… but when she sees that it’s Shinji Matou, Irisviel is even more mortified.
 
Shinji just grins at her though.
 
“Oh! Hey Mrs. E! Don’t mind me, just need to wash my hands real quick.”
 
Shinji was Shirou’s friend from school, and as such came over to their house quite a bit. Irisviel had looked into the boy of course, especially given his family name was Matou, but apparently Shinji himself wasn’t a Magus so she’d let it slide. However, there was always something about him. Something almost… magnetic that attracted her in. He was a nice enough young man, Irisviel felt… but she couldn’t quite explain why she sometimes let him boss him around her own house like she did.
 
It was always off-handed comments like “Hey Mrs. E, can Shirou and I get some snacks? I’m feeling like Onigiri, thanks!” or “Mrs. E, why are you wearing so many layers inside? You should let your body breathe more!”
 
Irisviel liked to wear sweaters a lot of the time because… well, having Illya left her with larger breasts then she was originally made to have, and there was the aforementioned lactation issue. And yet, she’d found herself listening to Shinji and wearing lighter clothing whenever at home, like sleeveless blouses and the like.
 
This though… this was too far, wasn’t it? And yet, Irisviel makes no comment as Shinji moves over to the sink… only to pause before turning it on and look at her.
 
“Oh! Were you just washing your breasts, Mrs. E?”
 
For a second, she thinks he might be asking because he feels a modicum of shame for barging in on her like this. But… no.
 
“Let me help!”
 
Irisviel’s eyes widen even further from their already spooked state as the blue-haired young man saunters right over to the tub, leaning down and grabbing hold of her tits from under her own concealing hands. A squeak finally leaves the homunculus’ lips as he begins to grope and squeeze her breasts to his heart’s content, not so much washing them as he is… well, playing with them.
 
Shinji is molesting her. The thought hits her like a lightning strike and she finally starts to squirm. She’s being molested by her adopted son’s friend… that s-surely can’t be appropriate, right?
 
“S-Shinji… a-ah… please stop… my b-breasts are… v-very sensitive…”
 
Rather than stop, Shinji just grins at her and lets out a laugh.
 
“I’ll say, Mrs. E! You’re squirming like crazy and I’m just trying to help you wash up! Why are they so sensitive anyways? You’re not pregnant, are you?”
 
Such an invasive question was doubly crass when asked while the young man posing it was also groping her chest. And yet, Irisviel finds herself answering honestly.
 
“A-Ah… n-no… there’s been no one since Illya and Shirou’s f-father passed. I am… I have been… alone.”
 
Why did she say that? Why was she telling Shinji any of this? Irisviel whines as Shinji hums in contemplation while at the same time moving his fingers to her nipples and pinching them, only to pull them out from her chest. She quivers under his surprisingly skilled ministrations. Truly, this young man is making her feel things she hasn’t felt since-
 
“Well, let me help you wash the rest of yourself I suppose. Since I’m here and all~”
 
Then, without any permission whatsoever, Shinji dives one hand down between her legs, his palm pressing against her pussy between her thighs before Irisviel can so much as inhale to speak. The homunculus MILF gasps and then whimpers again, even as Shinji’s fingers quickly push into her down there under the water.
 
His other hand remains on her breast, working over her titflesh even then. How… how was this happening? It honestly felt like something out of a fever dream, or maybe a wet dream. Irisviel couldn’t believe it. Was she hallucinating? Was Shinji not even real?
 
“Sheesh Mrs. E. You’re really pent up, aren’t you?”
 
Irisviel whines and finds herself nodding along with his words before catching herself. She should put a stop to this. She should end it before he-
 
“!!!!!!”
 
And just like that, it’s already too late. Irisviel’s eyes widen for a third time as Shinji somehow manages to take her over the edge in record time. To be fair, it’s been quite a long while for her… but even still, she’s not expecting him to bring her to climax just like that. Irisviel’s body bucks in the water as she orgasms all over his fingers, gasping and shuddering and moaning like… like a wanton whore.
 
Or perhaps, more accurately, like a sex doll. Her eyes flutter and she groans as Shinji finally pulls his hands back from her body. Feeling almost exhausted as she lounges there in the bath, Irisviel starts to pull herself back together. With her eyes shut, she can almost forget Shinji’s strange power over her and focus.
 
… It’s definitely time to put an end to this. When she opens her eyes, she needs to not only tell Shinji this was all very inappropriate and can’t happen again, but she also needs to be authoritative with him and put her foot down about how aggressive he tends to be when he’s visiting. This was her house. Hers, Illya’s, and Shirou’s. Shinji was a guest, and Irisviel needed to make that clear.
 
Determination and resolve firing through every part of her, the white-haired MILF finally opens her red eyes to do all of that… only for the words to catch in her throat as she stares, mouth agape, at the sight before her.
 
While she was collecting herself, Shinji had managed to completely strip naked, showing that several minutes had passed as Irisviel had been grappling with her internal thoughts. More than that though… his cock is right in front of her face. His big, fat, engorged member.
 
It’s bigger… bigger than any she’s ever seen before. Irisviel just stares at it, dazed and confused.
 
“Sorry Mrs. E, but you’ve done this to me. So I really need your help getting it to go away.”
 
Leaning forward, Shinji pushes his dick against her lips and then rubs it along her face instead of just thrusting into her open mouth. Her tongue almost instinctively traces out to follow his cockhead.
 
“You’ll help me out, Mrs. E. You’re a good woman like that.”
 
She… she… unable to help herself, Irisviel leans forward and captures Shinji’s cock in between her lips. Then, the homunculus MILF begins to dutifully suck.
 
-x-X-x-
 
Shinji Matou was not an idiot. Grinning down at Shirou’s ‘mom’ as she sucks him off, the blue-haired young man chuckles to himself. Sure, he might not be a proper Magus. And sure, when he was younger, being told he didn’t have an ounce of potential had crushed him, especially since it had come from his own grandfather.
 
But as it turned out, a routine check had recently revealed that Shinji wasn’t entirely bereft of talent. Sure, he could never be a normal Magus… but he had a power of his own all the same. His grandfather had explained that he had this strange sort of magic unique to him, one that wouldn’t help him do battle or unravel the secrets of the universe… but one that WOULD let him get ahead in life.
 
His ability allowed him to be very persuasive… and the more he trained it, the more he went around telling people what he thought and convincing them of his beliefs, the stronger it would get. Until eventually, he’d be able to convince everyone but the strongest willed folks to do whatever he wanted.
 
Being subjected to his grandfather’s tests after this discovery had not exactly been a pleasant experience for Shinji. But the one thing his grandfather didn’t seem to think possible was that Shinji might eventually be able to use his power on HIM. And yet… here Shinji was, no longer being tested, poked, prodded… and other more horrifying things.
 
He’d convinced his grandfather that it would be better for Shinji to conduct live tests out in the real world and then report back to the old, decrepit Magus. Shinji was pretty damn sure it was his power that had ultimately worked its magic on the old man too.
 
Ultimately, his grandfather had directed him in the direction of the Emiya Household. In fact, he’d specifically pointed him towards Irisviel von Einzbern. Shinji had never thought much of his friend Shirou’s mother before, except that she was a total hottie. But as it turned out, she was more than that. According to grandfather, she wasn’t human at all.

Rather, Shirou’s mom (adopted) was a homunculus, and thus more prone to taking orders than any human being on the planet. Basically, she was the perfect live test for Shinji’s powers, because she was liable to fold like a house of cards regardless.
 
Of course, Shinji hadn’t yet reported to his grandfather how easy it had been to effectively take over the Emiya Household and make it his own. Everyone was practically eating out of the palm of his hand already, but none more so than Irisviel. The beautiful MILF was falling all over herself to follow his commands from Day One, to the extent that Shinji just couldn’t hold himself back anymore.
 
And… as expected, he was a genius.
 
“Fuck, that’s good Mrs. E. Please keep going. Don’t stop now.”
 
“Mmmm~”
 
Irisviel von Einzbern looks up at him with hazy red eyes as she bobs up and down his cock, gurgling as she goes. His dick throbs while she sucks it like she was born to do so… and in fact, she was! Well, technically she was made to suck another man’s dick… but that man was dead so Shinji honestly couldn’t bring himself to feel very bad.
 
Resting one hand on Irisviel’s head, he grins as he slides his fingers through her white hair and lets out a shuddering breath. His other hand goes down further, to her tits, where he fondles and flicks at them a bit more. She really does have a spectacular rack. But then to be fair, she has a spectacular body in general. Irisviel is a Grade A MILF… and now she’s all his.
 
He wants more though. There’s a hunger in his gut that has nothing to do with food. He wants to make Irisviel his bitch properly. To claim her like no one has claimed her before. Just based off of what he’s absorbed via osmosis, her and her late husband’s relationship was incredibly lovey dovey. Probably a whole lot of gentle, sweet lovemaking. Lights out, under the covers missionary sex.
 
Someone should really introduce Irisviel to the darker side of sex. And why shouldn’t it be Shinji Matou?
 
Abruptly yanking the white-haired doll off of his cock, Shinji grins as he uses his grip on her hair to yank her forward out of her seating position.
 
“You’re not good enough with your mouth to get me off, Mrs. E. Scooch over, I’m climbing in.”
 
“W-Wha- I-!”
 
But Shinji isn’t taking ‘no’ for an answer. Not that Irisviel had even said ‘no’. Thanks to his own special powers, it didn’t seem like she COULD say no. But she could certainly have reservations about all of this, and that was precisely what Shinji was planning on steamrolling right over.
 
Forcing the beautiful MILF onto her hands and knees in the tub, Shinji makes sure that he has a good stance and isn’t going to slip and crack his head open or anything. Then, he takes his throbbing erection, lines it up with Irisviel’s dripping, glistening cunt… and slams home into her pussy with all his might.
 
“!!!!!!”
 
Irisviel squeals as he takes her for the first time. She groans and moans as he fills her with his cock. Shinji groans a bit too, because fuck if she isn’t super tight for him. To be fair, according to her own words, it’s been a while for her. A long while, heh. Well, Shinji is more than happy to end her dry streak, that’s for sure!
 
“Fuck, you’re so tight Mrs. E! You weren’t kidding, you really needed this!”
 
Irisviel just moans some more in response, even as Shinji grabs hold of her by her plush MILF hips and begins to properly fuck her from above and behind. Crouching over the white-haired homunculus, he grunts with every thrust, groaning in appreciation all the while. If this was what his power could get him, Shinji didn’t even care that he wasn’t a ‘proper Magus’. He’d happily take this one overpowered cheat code for life then more generalized magic any day of the week!
 
WHAP! WHAP! WHAP!
 
His hips slam into Irisviel’s ass and his balls swing up to smack against her clit with every pistoning motion his massive prick makes into her cunt. All the while, the MILF’s walls are clenching down HARD around his cock, driving him to even faster and rougher speeds as a consequence. She’s absolutely amazing, and he greatly enjoys hearing her cry out and moan as she climaxes upon his cock.
 
However… what he doesn’t like is that she’s still resisting. Not physically, but mentally.
 
“S-Shinji… s-slow down… please, we shouldn’t even be d-doing this. You’re my s-son’s friend and I’m-grrugbl!”
 
With a contemptuous roll of his eyes, Shinji reaches forward, one hand gripping Irisviel’s ass for support while the other grabs the back of her head and pushes her under the water. Her back arches as she’s forced into the classic ‘face down, ass up’ position, albeit with the added benefit of him not having to fucking hear her talk anymore.
 
“Stupid fucking bitch doll. Trying to tell me what to do. Silly cunt!”
 
There was a reason he’d called her Mrs. E for a long ass while now. It’s because he and his grandfather had discovered that he got better results with would-be authority figures the more respectful with them that he was. Whether it was at school, or with Irisviel, or even with his grandfather himself, if Shinji made an effort to act like he respected them, they were far more likely to go along with his ideas.
 
Hence addressing Irisviel respectfully had turned her into his bitch all the faster. But he doesn’t have to worry about that once she’s underwater and dealing with a lack of air. She can’t understand him anyways so…
 
“Take it! Take my big fat cock like the sex doll you were made to be! Become my bitch! Get fucked! Get fucked! Get fucked!”
 
PLAP! PLAP! PLAP!
 
Irisviel bucks and shakes under him, her pussy walls clenching down on his cock even more rapidly than ever before as she seizes up under the water. The lack of oxygen is clearly getting to her, but Shinji doesn’t fucking care. See, he lied before when he said she was never going to be able to get him off with just her mouth. In fact, her mouth had been relatively close to getting him off before he’d stopped her.
 
With that said, Shinji groans as he tips over the edge in under a minute, proceeding to fill Irisviel’s cunt and womb with copious amounts of seed that he’d been saving up for precisely this moment. He cums and cums until his balls are finally emptied… and only then does he pull Irisviel back up out of the water, still gripping harshly at her soaking wet white locks.
 
“!!!!”
 
Irisviel gasps for air as she breaches the surface, her eyes wide and her mouth opening and closing like a fish while she sucks in large lungfuls of oxygen. Unfortunately for her… Shinji isn’t done. Though, given just how much she’d enjoyed herself so far, she really didn’t have room to complain, now did she?!
 
Grinning wickedly, Shinji yanks Irisviel out of the bath and onto the floor, having to be careful with his steps given how much water they’d displaced. He pushes her over to the counter, watching as she smacks her hands against the edge and catches herself there. Then, she looks up at herself in the mirror and Shinji realizes that might not be a good idea.
 
He didn’t want to give her a chance to regroup or to actually see what he’s made of her. Not yet, not when she was still resisting him. Instead, surging forward the naked young man grabs Irisviel by the hips and spins her back around to face him, before lifting her up with a surge of strength he can’t fully explain. He plops her down on the bathroom counter and forces his way between his legs, his cock pressing against her creampied slit again while he grabs hold of her hair and yanks her into a tongue-filled kiss.
 
“Mmph!”
 
At the same time, Shinji also reaches up and gropes Irisviel’s breasts, squeezing and molesting her fat tits for all he’s worth. He doesn’t push into her again though. Not yet. He just teases the white-haired MILF’s pussy with his throbbing cockhead, getting himself nice and hard again while driving her absolutely wild with his tongue. Until finally…
 
Shinji blinks and pulls back from Irisviel’s lips, looking down at her tits in mild surprise.
 
“Wait… are you lactating, Mrs. E?”
 
Irisviel blushes profusely at the reveal, even as rivulets of breast milk cascade over his fingers.
 
“I… y-yes… I never s-stopped after… after Illya.”
 
But that was so many years ago. Shinji can’t help but let out a little laugh, which just mortifies Irisviel further as she covers her face with her hands. Right up until he leans in and captures a teat between his teeth anyways, beginning to suck deeply from her breast. Then, the homunculus MILF squeaks and looks down at him in shock, even as he drinks for a long moment.
 
“What… what are you doing?!”
 
Hah, what did it look like he was doing?! He was taking his fill! Pulling back from her nipple, Shinji gives Irisviel a wicked grin.
 
“Tasty~”
 
Irisviel squeaks again, but this time before she can reply, Shinji thrusts into her with all his might, making the beautiful MILF moan as he fucks her right there on the bathroom sink. Her voluptuous body bounces and jiggles and she shudders in ecstasy, while Shinji just dives back down to continue suckling at her tits.
 
Swapping between her breasts, he slurps, sucks, and bites at her nipples, going hard and not slowing down for even a second. Irisviel von Einzbern was HIS doll now, even if she didn’t fully know it yet. She belonged to Shinji and Shinji alone, and he was going to have his way with her whether she liked it or not.
 
Pounding into her cunt, drinking from her milk-laden tits, Shinji gets a little carried away when he suddenly reaches under Irisviel and grabs her by the ass, lifting her off of the bathroom counter and into the air. Her hands go back to cling to the sink for dear life as gravity asserts itself and drops her down onto his cock.
 
By all rights, he shouldn’t have had the physical strength to hold her beautiful voluptuous body aloft. By all rights, his action should have resulted in a lot of pain for both of them, with Irisviel falling to the floor and being ripped off of his dick at the same time. But… Shinji finds himself tapping into a new well of strength that he never knew he had.
 
Maybe… just maybe his cheat power wasn’t just persuasion? Maybe when he gained a certain level of power, he also got stronger? That’s the only explanation Shinji can come up with for how he’s holding Irisviel aloft right now with ease. Bending his knees ever so slightly, he begins to thrust up into her and with gravity doing the heavy lifting, he’s able to fuck her soundly from below as she squeals and wraps her legs around him, clinging to him with her lower limbs for dear life.
 
“S-Shinji… Shinji… SHINJIIIII!!!”
 
Growling as he all but yanks his head back with her teat still in his chompers, Shinji sucks some more milk out before letting go of Irisviel’s abused breast and going for the kill.
 
“Call me sir or Master, bitch. Because deep down inside, you know I own you.”
 
It’s a gamble, of course. But he feels like he’s turned the tables on her sufficiently at this point that he doesn’t have to be respectful anymore. She’s not the authority figure here anymore, not in this house and certainly not in this bathroom. Shinji is, and as she stares at him with mouth agape and eyes wide, Shinji doesn’t stop fucking her. Nor does he stop grinning. He knows he has her.
 
“Y-Yes… yes, Master! Please fuck this worthless bitch h-harder, sir! Own me! Use me! Abuse me!”
 
“Heh… don’t mind if I do~”
 
With another lustful growl, Shinji pulls out of Irisviel and spins her back around. He’s only out of her cunt for a moment before he’s slamming back into her again, this time from behind once more. Her feet barely have the time to slap down on the tiled floor of the bathroom before he’s fucking her up against the sink so hard she’s being forced up onto her tiptoes. He’s definitely moving faster than a normal human now too, on top of being stronger than one…
 
One hand reaches around to continue palming one of her fat tits, while the other grabs ahold of her hair, fashioning it into a makeshift ponytail as he yanks her head back and forces her to look at herself in the mirror.
 
Before, he’d been a little worried about letting Irisviel stare at herself for any length of time while being fucked. Now though, he knows it’ll be fine. Better than fine, he’s confident it’ll cement her new worldview permanently.
 
“Look at yourself, bitch. Look at how good you look impaled on my cock. Look at how much you’re enjoying this.”
 
Moaning, tongue lolling out of her mouth, the MILF stares at herself in the mirror, shuddering in ecstasy.
 
“Y-Yesssssh Mashter~ Look sho good impaled on Mashter’s cock~”
 
Even as she slurs the words, Shinji has no trouble understanding her. And her easy agreement brings a big broad smile to his face. He fucks Irisviel even harder, feeling her climax all over his thrusting dick time and time again. At the same time, he feels himself slowly creeping towards another peak. He’s going to cum inside of Irisviel von Einzbern again. He’s going to fill her womb with his seed again.
 
This time though, he’s going to fill his fuck doll with his jizz. Because that’s what she is now that she’s accepted her place at his feet. With a lustful growl, Shinji Matou thrusts forward one final time and pumps Irisviel to the brim. He cums and cums just like before, feeling like a million bucks as he does so.
 
Indeed, it’s almost like cumming inside of the freshly broken woman is what’s making him stronger. Rather than feel exhausted by the time he’s done filling her womb with another load, Shinji feels energized. Revitalized, even.
 
Pulling out of Irisviel, Shinji admires himself in the mirror for a moment. He thinks he’s got more muscle definition then he’s ever had before. Heh, it’s like magic. Seriously, if he didn’t know about magic, he might be freaking out right now. According to his grandfather, he might have some of the most unique magic in the world.
 
Nobody knew his upper limits either. Certainly not Shinji. If he got physically stronger and faster from fucking women who submitted to his persuasive personality, did that mean he might also eventually grow more powerful… magically? Might he be able to do other magic after all with enough time?
 
As Shinji is thinking about all of this, he blinks at feeling a pair of lips wrap themselves around his cock. Looking down, he can only grin wickedly at the sight before him. While he was admiring himself in the mirror, Irisviel had dropped to her knees, turned around, and begun cleaning him off with her mouth and tongue. With her hands resting on top of her legs, she stares up at him with red eyes filled with love, adoration, and devotion.
 
Before today, Irisviel von Einzbern would only have done anything for two people in her life… her daughter and her son. But after all of this, Shinji can tell that Shirou and Illya are the furthest things from Irisviel’s mind. All she cares about now is serving Shinji Matou, her new Master.
 
A shiver runs down Shinji’s spine, but it’s not one of trepidation or fear. Rather, he feels nothing but excitement for what the future holds for him. Why should he care about morals or anything like that when he had power like this?
 
Chuckling darkly, Shinji brings a hand down to rest upon Irisviel’s head before letting out a happy little sigh.
 
“My very first toy. That’s you, bitch. You’re my first doll… but not to worry… you WON’T be the last.”
 
Shinji wanted more. Not just more women, but also more power. And hey, he’d even do some research and experimentation like a proper magus along the way as well. Would more unique women give him more power? Would more power give him access to stronger willed women?
 
… He could hardly wait to find out.

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