Chaldea Subjugation Organization (Fate/Grand Order)

As the battle finally comes to an end, Shigure can’t help but breathe a light sigh of relief, though he lets none of his momentary worry show on his face. It had certainly been a tough fight, fighting the Maternal Sea herself. Tiamat, the womb of the world that was cast aside after the world was finished being built. Honestly, from what he’d heard of her story, she had it rough.
 
But that didn’t change the fact that she was a Beast, specifically Beast II, and on top of that, a threat to the world and humanity. She was precisely the sort of thing that Shigure and Chaldea existed to defeat and destroy. And destroy her they had, as difficult as the battle had been, as rough as the fighting had gotten. Tiamat had certainly pulled out all the stops, but in the end, she’d fallen, and Shigure and his Servants had come out the other side alive and victorious.
 
Though admittedly, part of him wished that he could have had a go at the Beast before her required demise. Despite having the designation of ‘Beast’, and despite being a truly frightening presence with a massive amount of power… Tiamat was also quite the looker, and as much as he knew she was a threat that had to be put down, Shigure could admit to admiring her from afar, even as he commanded his Servants into battle against her.
 
It was a shame, but in the end, perhaps it was for the bes-
 
“HAAAaaAAAHHH… AAAaaaAAAA!!!”
 
Shigure blinks, head whipping around at a familiar sound as it fills the air. Rushing forward at the same time as his Servants, he arrives at the edge of the crater that denoted Tiamat’s defeat, her death causing an explosion that destroyed her surroundings, and peers down within. Down in the center of the crater, much to the surprise of everyone looking, there sat Beast II. There sat Tiamat, reconstituted into corporeal form.
 
… Except, not quite. It takes Shigure a moment to get past his fear and realize what’s really happening. No, Tiamat didn’t have untold reserves of power just lying around to fuck them all up with. No, they weren’t about to have to fight her all over again, exhausted and low on resources as they were. Because while this was Tiamat, it was Tiamat Diminished, with a capital D.
 
The Maternal Sea herself seemed a bit confused. Tiamat didn’t ‘speak’ like most. Not even her own language, ancient and lost to time… or perhaps that was exactly what it was. Still, even if it was her own language, ancient and lost to time, it sounded a lot more like singing than speaking. In Shigure’s opinion, it had always sounded like whale song, at least to him.
 
But right now, her song was far higher pitched than it had ever been before. This made sense, given that Tiamat now had an incredibly underdeveloped body. Gone was the voluptuous matronly MILF vibe that Shigure had been getting throughout the battle. This definitely wasn’t the womb of the world, before him now. This was Tiamat in miniature. Once you got past the fact that her horns were still massive, as was her hair, you realized that the Beast herself was just… unbelievably tiny.
 
It was almost adorable, seeing her in this state. As such, when one of his Servants called out that they needed to kill it, Shigure didn’t even bother to register who it was, nor did he look away from Tiamat for even a second as she wailed pitifully in her whale song ‘voice’. He just raised a hand and spoke.
 
“No! You will all stay back! I’m going to handle this myself. Nobody is to interfere!”
 
He had a pretty good idea of what had happened, as it turned out. Tiamat HAD died… but her Spirit Origin must have spontaneously reappeared. Even after being killed, her body had been respawned from a small bit of Chaos Tide that had been left over after the battle. She’d been left in this cute, underdeveloped body, more than likely to conserve magical energy.
 
But what all that really meant was simple… Tiamat was weak right now. And while yes, they COULD kill her and just be done with it, that wasn’t what Shigure wanted to do. No sir, he wanted what he’d wanted from the beginning, from the moment he’d first laid eyes on Beast II’s form. It didn’t matter that she’d changed quite a lot from that original body… in fact, this was better, because it was what supplied him his opportunity.
 
Jumping down into the crater, the young Master of Chaldea approaches the wailing Beast with a swagger in his step. As she notes his approach, she tries to stumble to her feet, snarling at him and singing at him quite angrily. But Shigure ignores her whale-like singing in favor of reaching down and unbuckling his belt, unbuttoning his pants, and pulling down his zipper.
 
His face remains expressionless on the approach, until he’s finally right on top of Tiamat, who is just starting to realize she might be in over her head right now. It’s obvious she’s trying to summon up the magic power to use one of her techniques to turn him into paste, but it’s not working. Unfortunately for her, she doesn’t truly realize she needs to run until Shigure is right on top of her.
 
“AAAAAhhhhhhHHAAAA!!! AhhhAAAAAaaaHHH-MMPH!”
 
Grabbing the diminutive Beast by her long, curved horns, Shigure finally silences her angry singing by shoving his erection right into her mouth and down her throat. Tiamat’s pink eyes go wide, and her cheeks end up chipmunking outwards as his sheer size overwhelms her. Grinning wickedly, Shigure looks down at the diminished Maternal Sea and chuckles.
 
“Let’s give that mouth of yours something else to do for a while, shall we?”
 
And then he begins fucking Tiamat’s face, right then and there.
 
“Gagkh! Gagkh! Gagkh!”
 
The Beast gags on his cock of course, even as Shigure proceeds to face fuck her to his heart’s content. She chokes and gurgles on his member, her cute little nostrils flaring to try to take in air, even as Shigure blocks up her windpipe and pushes his cock all the way down her esophagus, stretching her tight, tiny little throat around his dick and causing quite the impressive bulge in her too-thin neck.
 
It doesn’t take long to provoke tears and snot and slobber from the poor little Beast. Never did Shigure imagine he’d be thinking of one of these creatures in such a way, but there was no denying that the Tiamat of now was pitiable in a way the Tiamat of before just… hadn’t been. Not just pitiable, but downright pitiful, ultimately.
 
That didn’t stop Shigure from continuing to fuck her face and gag her on his cock to his heart’s content though. In and out of her throat the young Master of Chaldea went, grunting and groaning as he forced her mouth to take his dick like some sort of living onahole, pounding away as tears tracked down Tiamat’s face and slobber and saliva collected on her chin, before eventually falling down to her flat, petite chest below.
 
She’s just too weak in her current form to overpower Shigure. She tries, at first. Tiamat reaches up and grabs Shigure by his arms, attempting to dislodge his grip on her horns, even as she twists this way and that. But while he can tell that she’s still stronger than a baseline human, that doesn’t mean she stands a chance in hell of overpowering HIM. If any other human man tried this, they’d be fucked, but Shigure is uniquely suited for turning Beast II into his little, fuck toy bitch.
 
In fact, that was exactly what he was going to do. Grinning down at Tiamat, Shigure increases the pace at which he’s forcing her to deep-throat his cock, making her gag and choke even harder as he speaks over her.
 
“I’m getting close now. I’m going to cum, and you’re going to drink it. See, I’ve decided that I’m not going to kill you… again. Instead, I’m going to keep you as my own personal Fuck Beast. Now be a good little bitch and drink my seed.”
 
Using his grip on her horns to pull her ALL the way down his cock, Shigure groans quite loudly as he begins to cum on the spot, his seed exploding out of his dick and down her throat. Quite unable to stop herself from doing so, Tiamat does swallow his cum, drinking a good amount of his seed, even as some of his load explodes out of her nostrils and the sides of her mouth.
 
Even with how violent the delivery is, however, there’s no denying that Tiamat’s overall reaction to reflexively swallowing half of his cum load is… a positive one. But then, Shigure isn’t surprised by that. Not all of his body’s enhancements have to do with just strength or stamina or agility, after all. Some of his ‘gifts’ are just fun treats for the women he ends up fucking.
 
Enraptured by the taste of his seed, Tiamat trills in reluctant delight as Shigure pulls out from between her lips, his cock popping free of the diminutive Beast’s mouth. Her tongue traces out and laps up some of the seed that escaped her, and when she notices Shigure smiling down at her in amusement, a light blush dusts her cheeks and she averts her gaze.
 
That said, she puts up barely any struggle at all as Shigure pushes her all the way down into the ground. He forces her back with his grip on her horns, laying her in a bed of her own incredibly long hair, and then he transfers his grip on her horns down to her legs, grabbing her by the ankles and lifting her skinny, short legs up and then over.
 
Pinning the petite Beast’s ankles back behind her horns is actually rather easy, as Tiamat proves to be VERY flexible in her current diminished state. Once he’s done so, Shigure brings his still-hard cock to bear on the Maternal Sea’s cute little cunt, dragging aside her skimpy undergarments and revealing a pink pussy just waiting to be split open by a big, fat dick.
 
So of course, without hesitation, Shigure lines himself up and fucks her. He thrusts forward into Tiamat’s cunt nice and hard, causing a surprised melodic moan to escape her throat as her eyes widen in surprise at the sudden pleasure. Truth be told, Shigure wasn’t sure if she’d ever felt this kind of pleasure in her entire life. Sure, he’d read the stories, but from the sound of things, Tiamat had been fine with the gods, her children, rebelling against their father.
 
It was only afterwards that she’d found herself being attacked by her own children and forced to birth eleven Magical Beasts to oppose them. And then she and her Beasts had been killed at the end of THAT war. That sounded to Shigure like Tiamat had never been dicked properly in her entire existence. Well, that was alright. Shigure was here now, and he was more than happy to do what no one, be they god or man, had ever tried.
 
Fucking Tiamat in a mating press, Shigure watches the diminished Beast’s face contort in pleasure, as her moans become cries of pleasure. The petite form of Tiamat writhes and wiggles under him, but she doesn’t try to escape, or struggle to push him off. Quite the contrary, in fact, instead her pussy walls tighten and grip at his cock harder and harder, until she climaxes around his dick, her eyes going crossed from the explosion of pleasure filling her.
 
On Shigure’s end, there’s no denying just how unbelievably TIGHT Tiamat is. To be fair, he knows that’s mostly because of her current form, her pussy small and just not made to handle a cock as big and thick as Shigure’s. But that doesn’t stop him from MAKING her handle it, it doesn’t stop him from stretching her out on his dick even as her tiny cunt does it’s level best to milk him of his seed, squeezing and gripping around his shaft.
 
Slowly but surely, Tiamat is becoming addicted to his dick. Shigure can see it in her eyes, he can see it in the way she’s looking at him so happily, her song-voice now filled with ecstasy and bliss and euphoria. This might not just be the first time Tiamat has ever been dicked right in her life, this might also be the first time in a very long time that the Beast has actually been HAPPY.
 
Shigure is more than willing to give her more of the same, but even as he really starts getting into it, plowing Tiamat into the ground and making a smaller crater within the crater that they’re already fucking in, he can feel his next orgasm quickly arriving. As much as he tries to hold it back, and to be fair, he does hold it back for quite some time, in the end Tiamat’s tight pussy milks him of his release, and there’s nothing Shigure can do about it but cum deep inside of her womb, filling her to the utter BRIM with his thick, viscous seed.
 
Somewhat satisfied, with plans forming in his head, Shigure pulls back, sliding his cock out of the petite Tiamat’s well-fucked pussy. But before anything else can happen, before he can enact any of the plans he was currently working on internally, Tiamat uses the magical energy in Shigure’s semen, the energy present because of his status as Master of Chaldea, and evolves herself back into her original form, the form that Shigure had taken to calling her ‘sexy MILF form’ in his head.
 
This was the Tiamat that had initially caught his interest, the Tiamat that he’d wanted to fuck, even as he was forced to order her destruction and death because of the danger she represented to the world and more importantly, to him and his precious Servants. With massive tits and wide hips and just all of that voluptuous MILFy goodness, this was a Tiamat that Shigure could DEFINITELY get behind.
 
Needless to say, within moments his cock is completely hard again, and he’s moving up the length of her body, slapping his cock down between Tiamat’s soft tits, allowing her pillowy breasts to swallow his dick whole as he begins to fuck her mammaries, right there on the spot. Tiamat reaches up and helpfully squeezes her breasts together with her hands, even as she trills excitedly, singing her praises right up until his bulbous cockhead bursts out of the top of her cleavage and bops her right in the lips.
 
For a moment, Tiamat just stares, nonplussed… then, when it comes back around again, she gives it a kiss, almost seeming fascinated. The third time though, she opens her mouth wide and lets his cockhead get swallowed up between her lips. As Shigure groans from having her sucking and tonguing at his dick tip, he squeezes and gropes her titties all the while, playing with her nipples to his heart’s content as he thrusts in and out of the valley between her massive breasts.
 
As his shaft fucks her tits, so does his cockhead fuck her mouth, Tiamat’s singing muffled but no less satisfied by the thick meaty tip buried in her maw. Shigure, meanwhile, throws his head back in pleasure, unable to help but enjoy the entire experience. This was exactly what he’d wanted to do to this hot, sexy MILF back when they were enemies and Tiamat was a massive threat. He’d wanted to take out his cock, slap it down between her tits, and teach Beast II the joys of paizuri, right then and there.
 
Of course, in his fantasy he had singlehandedly beaten her and then a titfuck was how they started. There also wasn’t any petite, underdeveloped version of Tiamat for him to face fuck and then mating press in that initial fantasy either. It just goes to show; no plan survives contact with the enemy. But that was alright, because Shigure was nothing if not very adaptable.
 
As this is his third orgasm, Shigure lasts a lot longer this time around then he did the first two times. Meaning he gets to enjoy every last bit of Tiamat’s soft, pillowy titties, as well as the focused efforts of the Fuck Beast’s tongue and lips surrounding his cockhead. She was willing this time around, oh so willing, and that made it even better, because it meant she was doing all she could to help him fuck her breasts all the harder.
 
In the end, Shigure cums in her mouth once again, but this time just his cockhead is trapped between those pouty lips of hers. That means none of his seed slips out, and Tiamat is able to swallow down his load quite happily. Or she would be able to, if Shigure didn’t have other plans. He cums in her mouth for a little while but doesn’t deposit his entire load there this time.
 
Instead, Shigure pulls out and makes sure to coat both her face and her tits in his seed as well, giving Tiamat her very first facial, as far as he was aware. Maybe he was wrong, but he liked to think it was her first, and really, in the end all that mattered was that he believed it. Regardless, even as he facialized Tiamat, the Maternal Sea, treating her so disrespectfully (much to her immense pleasure) Shigure knows he isn’t done with the Beast quite yet.
 
After all, there’s one last hole on Beast II’s body that he hasn’t handled. With a wicked grin, the young Master of Chaldea reaches down and grabs Tiamat’s wide, MILFy hips, throwing her over onto her front. Then, he pulls her up onto her hands and knees, and grabs at her big fat ass cheeks, groping and squeezing them in both hands for a moment just as he had with her breasts, before ultimately spreading them open to reveal Tiamat’s last untouched orifice.
 
With a feral grin on his face, Shigure brings his cock to bear on Tiamat’s ass, and proceeds to push into her from behind, even as he transfers his grip of her from her ass to her horns. Going full circle, Shigure grips tightly at Tiamat’s curved horns, pulling her head up and forcing her to arch her back, even as he sinks his large prick into her anus, inch by fucking inch.
 
Tiamat’s singing certainly turns confused by this latest development, but his cock is covered in sexual fluids by this point, and more than lubed up. Not to mention just how durable a Beast is. Tiamat certainly isn’t going to experience any pain from being fucked in the ass, not unless he ratchets it up to eleven, which isn’t something Shigure is looking to do.
 
Instead, he plows her asshole at a normal, reasonable pace, his thighs clapping into Tiamat’s butt cheeks and his balls coming up to slap at her cunt with every deep, penetrating thrust he makes into her back door. As he buries his dick in her bowels over and over again, Tiamat’s confused trilling turns to pleasured singing once more, the enjoyment of being butt fucked finally catching up to her, much more quickly thanks to a complete lack of pain.
 
However, the confused trilling does return a few moments later, and even Shigure slows down a little as he feels something odd happening. It takes him a moment to realize what’s happening, just as it takes Tiamat a moment to catch on as well. As it turns out, drinking Shigure’s seed didn’t give Tiamat any magical power… only getting fucked in the cunt seemed to. So, due to just how long Shigure had been fucking her tits, the magic that she’d been using to sustain her MILF form had run out, and Tiamat was starting to shrink back into her diminished, underdeveloped body from a sheer lack of magical energy.
 
Now, this was fine with Shigure. It was, as it turned out, MORE than fine. Because not only was Tiamat shrinking again… every last part of her was shrinking at the same time, causing her anus to slowly but drastically and even somewhat dramatically tighten around Shigure’s cock. As Tiamat continues to shrink back into her flat-chested petite form beneath him, Shigure finds himself doubling over her shrinking body, groaning quite loudly as her asshole milks Shigure for everything he has.
 
Unable to control himself as Tiamat proves to be the tightest little Fuck Beast onahole he’s ever had, Shigure cums for a FOURTH time, filling her rectum with his seed, pumping it niiice and deep inside of Beast II’s bowels. It’s certainly an interesting experience, but all experiences eventually end. Shigure lets out a grunt, and pulls out of the Primordial Goddess’ ass, only to find himself lip locked a moment later with the tiny Beast.
 
He can feel it as she begins to form a contract with him, even as their tongues entangle with one another, so Shigure reaches out and wraps his arms around Tiamat’s diminutive body, pulling her closer and kissing her harder. He can sense as her Spirit Origin is altered right there on the spot, and Tiamat herself chooses to bind herself to him as his Servant… as his ‘Fuck Beast’.
 
As the contract is finalized and the bond between them is completely, Tiamat pulls back and smiles at him, literal hearts in her eyes having replaced her pupils as she sings out to him.
 
“Aaaaaahhhaaaa… haaaahaaaah~”
 
She certainly sounds a lot less angry and a lot happier than before and judging by the way she embraces her new Master lovingly, cuddling into his chest as Shigure rises to his feet, holding her in his arms… his experiment was a success. He had actually tamed one of the Beasts. He’d tamed Tiamat and made the Primordial Goddess his Servant.
 
Grinning, Shigure leaps up out of the crater and gives each of his wide-eyed, blushing Servants a wink, before beginning to make his way back to Chaldea with his prize.

-x-X-x-

If you'd like to read more of my work not seen on this website, check out Hentai-Foundry.com and QuestionableQuesting.com where I have over a thousand stories!

If you'd like to contribute to funding my writing at all, check me out on Patreon.com/Cambrian

Thanks for reading!