Chaldea Subjugation Organization (Fate/Grand Order)

He was deep in thought when it happened. Otherwise, it WOULDN’T have occurred in the first place. Regardless, it did. Shigure, not watching where he was going, turned a corner and ran right into one of his Servants. Luckily, it was the perfect Servant to run into. Minamoto no Yorimitsu, also known as Raikou, let out a light yelp, but went down all the same to avoid causing him any pain.
 
At least, Shigure preferred to believe that was how it happened, rather than his life having become some kind of hentai anime. Because, one way or another, he ended up face-planting between the beautiful, buxom Servant’s big fat titties, his nose rubbing into her cleavage as his cheeks end up on either of her massive breasts.
 
Of course, as soon as the shock wears off, which for Raikou, is moments, Shigure finds himself even further pulled into the dark-haired woman’s tits as she embraces him quite tightly.
 
“Master! It’s been so long since we last saw each other! My how you’ve grown in that time!”
 
… It’d actually been something like two to three days. But Shigure wasn’t about to correct Raikou, especially when the female Servant was so happy to dote on him and rub her boobs all over his face. In truth, his relationship with Minamoto no Yorimitsu might just be the strangest out of all the bonds and ties he’d made between himself and his Servants so far.
 
Despite the utter perversity and depravity that so many of his female Servants wallowed in, Raikou was… well, she was the only one who considered him her child.
 
“Mm, let your mother just hold you for a moment Master~ I need to make certain that you’re okay after such a nasty spill!”
 
He was absolutely fine of course. Her soft, voluptuous body had handled the fall quite well. He wouldn’t even be sore anywhere tomorrow… at least, not from the spill. Raikou’s attitude towards him made it ever so slightly uncomfortable for Shigure, especially with the way he was enjoying her body, pressed up against his own. And now his cock was getting hard, and though he was usually so cool, calm, and collected, Shigure couldn’t help but flush slightly as his erection poked Raikou right in her abdomen.
 
It wasn’t that he was embarrassed, because he wasn’t. He just hadn’t gotten around to fucking this particular Servant yet. Perhaps it was time for that to change. As soon as she realizes what she’s feeling, Raikou pulls him back out of her breasts. Rather than shock or surprise, which Shigure was more than ready to abuse a command seal to wipe away, Raikou adopts a maternal smile as she cocks her head to the side.
 
“Ah, did my big, strong son get hard for his mother? There’s no need to fret Master! It’s perfectly normal for a boy to lust after his mama! No need for you to be embarrassed!”
 
Shigure is more than a little surprised to realize that Raikou’s little ‘mother’ persona involves this kind of behavior. He wonders about the time period she came from… before realizing she’s probably just as perverted as so many of his other female Servants have turned out to be. Especially given the slightly erotic, slightly insane gleam that was now shining in Raikou’s eye.
 
“Since I’ve caused you such discomfort, it’s up to me to take care of it, Master!”
 
She certainly sounds eager. Shigure stares at the big-breasted dark-haired Servant for a long moment. He considers her words… but ultimately, he’s already made his decision, the moment he ended up between those two lovely orbs of hers. Grinning a bit wickedly, Shigure rises off of Raikou’s body, making sure to use her pillowy tits as handholds as he does so. She in turn moans from the surprise contact but takes his offered hand and stands with his help all the same when he holds it out.
 
“You’re right. You should take care of me. I’m going to put your through your paces… mother.”
 
He doesn’t really consider Raikou as his mother or anything like that. She’s not in any way a mother-figure, that’s for sure. But Shigure can appreciate a little bit of roleplay, and the way Raikou’s smile widens further as her eyes light up because of his acknowledgement does make him feel good inside. He likes making his Servants happy… especially when it makes HIM happy as well.
 
Leading Raikou through Chaldea’s halls to his personal quarters, Shigure takes note of the woman’s shaking and squirming. She’s practically vibrating with repressed desire, and if he told her to, he had no doubt that she would strip down right then and there and jump his bones in the middle of the hallway. But no, this time around Shigure definitely wanted privacy. He wasn’t interested in anyone coming upon him as he played with his ‘mother’.
 
In no time at all, they’re in his bedroom. In no time at all, Shigure is seated on the edge of his bed as Raikou lets her ‘clothing’ vanish from her body, the garments obviously just prana made manifest from the way they dissolve off of her voluptuous form. With the dark-haired woman completely naked, Shigure could easily acknowledge that she had the body of a breeder, of a mother, rather than the fighter that her legend was supposedly based off of.
 
This was a body that was made to be fucked and plowed and cum inside. This was a body meant to be heavy with someone’s child, filled to the brim with virile seed that would see her pregnant in no time at all. But more than anything… this was a pair of tits that were just DYING to be fucked. And so, the first order of business is to command Raikou to kneel. No seals are necessary, the Servant happily obeys as she grabs her fat breasts, lifts them up, and swallows his thick, throbbing cock hole in her cleavage.
 
Even with his enhanced size, Raikou’s ginormous titties do a fairly good job of encompassing his girth. Her massive boobs squeeze down on him from the sides and wrap over the top of his cock in a way that’s just plain satisfying, especially when she spits down the valley of her breasts a few times to make sure that the passage is slicker and smoother for him.
 
Shigure lets out a groan and tilts his head back, prompting Raikou to adopt a knowing smile as she looks up into his face.
 
“Ah, Master… how are mommy’s breasts? Are they to your taste, Master?”
 
Still groaning, Shigure reaches out and plays with Raikou’s silken locks a bit. He looks down into her eyes as his groan cuts off for a pant instead. A grin spreads across his face as well, and he nods his head in response.
 
“They’re amazing… mother. Keep going. Show me what you can do with your bountiful breasts. Show me how useful they are.”
 
Raikou flushes a bit at her ‘son’s’ language and commanding tone. But she obeys nonetheless, sliding her slickened tits up and down his cock a little faster, moaning happily as she gives him the best boobjob she possibly can. It’s certainly up there in Shigure’s top five. He’s not sure who else he would compare it to? Boobturia? Ah, but she was all tit. That woman was simply made to be fucked and made to be tit-fucked specifically at that.
 
This though, there was a different element of sorts to this. Raikou wasn’t just a pair of breasts for Shigure to fuck till kingdom come, she was also a woman who wanted him to view her as his mother. Kinky, to be sure, but it made him look upon her as a bit more of a person than just another set of holes to fuck. And that in turn made it all the more arousing. Roleplaying that she was actually his mother in this moment, that his slutty little whore of a mother was happily pleasuring his cock, taking care of the erection that SHE gave him… yeah, this was fucking amazing.
 
It got even more amazing when Raikou responded to Shigure’s praise by smiling up at him, only to then plant a kiss on the tip of his cock. She licks and lapped and swirled her tongue around his dickhead for a little while, and it was all Shigure could do to hold back as he thoroughly enjoyed the way his mother was playing with him, teasing him.

Finally though, Raikou gave his cockhead one kiss too many. Finally, Shigure was no longer able to hold back. The young man grunts as he thrusts forward. Raikou’s pliable lips spread wide before his cock as it ends up buried halfway in her mouth. And while Shigure had been in his fair share of hot, wet mouths before, hell, while he’d been in his fair share of THROATS before, this time was different. Some of it had to do with Raikou’s tits, still squeezing down on the lower half of his cock. Some of it had to do with the look of doting love in Raikou’s eyes as he stared down into her face.
 
All in all, there’s just something about the combination of circumstances that sets Shigure off entirely. He groans loudly, and grips his ‘mother’s’ hair, even as he fills the Servant’s mouth with his cum right then and there. Raikou’s back arches a little as her spine goes stiff, but her throat also convulses as well, and Shigure can feel her swallowing every last drop of his hot, white cum right down her gullet.
 
He watches her do so, immensely turned on by the surprisingly erotic sight. Well, not surprising that it’s erotic, but there’s just something beyond the eroticism that Shigure can’t quite place. One way or another, he’s having the time of his life. And from the look on Raikou’s face, she’s enjoying herself quite a bit as well.
 
A bit of his cum slips from the side of her mouth as she pulls off of his cockhead with a pop. Reaching up, a smiling Raikou makes sure to push the cum back in with her index finger, sensually sucking the digit clean once its past her lips. Then, she looks up into Shigure’s eyes once more, before opening her mouth wide and sticking out her tongue to show she’s swallowed every last drop. Only after she’s done so does she speak.
 
“Mm, Master… your seed is as thick, tasty, and virile as I expected… but it would have been better used in another way, don’t you think?”
 
Shigure has an idea of what Raikou is saying, but he’s not planning to make it easy on the woman. He lifts a single brow in silence, and Raikou squirms a bit before simply diving into the deep end.
 
“Master~ Don’t tease your mama like that… I know all about what you’ve been getting up to with the other Servants. Ah, it’s a mother’s intuition, you know? But… but you’re sure to have gotten some of them pregnant by now. It’s only right that you impregnate your mommy next, Master! You wouldn’t want to leave me lonely, would you?”
 
Raikou places her hands palm down suddenly on his legs, and Shigure watches in mild surprise as she slowly lifts herself up off her knees, arching her back and jutting out her tits into his face at the same time. Before he even really knows what’s happening, the beautiful, voluptuous Servant has crawled onto his lap, her knees on either side of his waist as her pussy lips rub against his hardening cock, hot-dogging it between her slit.
 
Moaning wantonly, Raikou looks down into Shigure’s eyes, half his face already buried in her tits.
 
“Let mommy do all the work, okay Master?”
 
Shigure hesitates for all of a moment, not used to giving up control in any way. But once in a while, it could be fun to sit back and relax. And he had to admit, the way Raikou had couched it… letting the female do all the work had its perks. He couldn’t truly get tired from sex anymore, no matter how hard or long he went at it, but it was still good to take a breather now and then.
 
A moan erupts from Raikou’s throat as she reaches down between them and guides his cock into her waiting cunt. Her tight, velvety pussy swallows him whole, and Shigure lets out a muffled groan of his own into Raikou’s sensitive mammaries as he feels his cock being squeezed from all sides by her needy, hot little hole.
 
True to her word, Raikou takes care of everything. Shigure allows her to do so, sitting there and resting his hands on her ass as he suckles from her tits. He doesn’t do much beyond that, his fingers digging into Raikou’s beautiful, bountiful butt cheeks, and his lips suckling at one after another of her hardened nipples. At the same time, Raikou rides him, her arms wrapped around his head to pull him deeper into her large breasts, even as she bounces up and down on his throbbing cock.
 
“A-Ah! Yes, Master! Yes! J-Just like that… mm, you’ve grown up to be such a big, strong lover my darling Master! You have s-such an amazing cock! Yessss!!!”
 
He’s barely even doing anything, but then Shigure suspects that he really wouldn’t have to do much to make the Servant praise him. In this case, having a big cock for Raikou to impale herself on over and over again seems to have done the trick well enough, because she seriously can’t seem to get enough of him. Shigure grunts as the beautiful dark-haired Servant cums along his member once more, and he thoroughly enjoys the way she cries out to the ceiling of his bedroom, even as her pussy juices make the passage up into her cunt all the nicer.
 
His cock is hitting the entrance of her womb now, and Raikou seems to be doing her level best to use him like a battering ram on her own cervix. Again and again she drives himself down on his cock, and each time sees Shigure pushing a bit more into her most sacred of places. Finally, the dark-haired Servant rears up and then slams herself down one final, powerful time. A shriek erupts from Raikou’s lips as he spears right through her weakened cervix and into her womb itself.
 
“Y-Yes! Like that, all the way inside of me. Ah, my baby boy all grown up into a big strong man. Master, you’re in my womb now~ Time to, mm, deposit your load where it belongs!”
 
Despite her words, Shigure DOES try his best to hold back while she continues to ride him as hard and as fast as she can. But the sensations of her inner walls clenching down so damn hard along his cock, the feel of her womb turned into a sort of condom around the tip of his dick… it’s ultimately just too much for the young man.
 
Shigure groans loudly as he finally begins to cum. Raikou lets out a victorious little laugh, and buries his face all the deeper in her saliva-covered titties, even as she moans wantonly, her insides milking every last drop of seed from his cock. He fills her womb to the brim with his cum and then some, and once he’s done, Raikou stays right where she is, on his lap, clearly unwilling to move.
 
Seeing no other choice, Shigure slowly shuffles them both backwards. Raikou helps, so long as she doesn’t have to pull up off of his cock, lodged deep inside of her as it is. He’s just inside the entrance of her womb now, still half-hard thanks to her tight, massaging cunt walls. As such, he’s the perfect stopper to keep his virile cum from pouring out of her, and they both know that.
 
Once Shigure has his back to the pile of pillows at the head of his bed, he’s much more willing to simply relax and let Raikou stay where she is. In response, the beautiful, voluptuous Servant looks down at him with such love and devotion in her eyes, as if she thinks she knows how a mother is supposed to look at her child. One could certainly argue that Raikou doted on Shigure… but this was not a normal mother-son relationship.
 
That was perfectly fine though, if Raikou had WANTED a normal mother-son relationship, Shigure would probably have eventually used his command seals to change her mind like he’d done with some of his other Servants. He wasn’t going to leave such a fine piece of ass untapped after all. Now though, now here they were and Raikou was more than happy to be his hot cum dump, so long as he pretended she was his mother, and focused on breeding her.
 
Leaning in, Raikou gives Shigure a kiss. Its deep, passionate, and filled with tongue. Shigure deepens the kiss even further, his hands grabbing at Raikou’s ass again to pull her in closer. She moans into his mouth, and he nibbles at her lower lip to remind her who’s in charge. The slightly demented Servant probably thinks that this kiss is motherly in some way. Shigure isn’t about to correct her on that front.
 
Eventually, Raikou pulls back and smiles happily down at him.
 
“I love you so much Master. Your mother will be sure to give birth to a healthy child for you~ And then, we can do it all over again! Mama will be your breeder, and give you as many babes as you want, Master!”
 
Shigure’s grin turns distinctly wicked as his fingers dig deeper into his ‘mother’s’ ass, drawing a happy little moan and some squirming from Raikou. He chuckles darkly and nods his head in response to Raikou’s words.
 
“Well then, I might just take you up on that… mother.”
 
She moans half in contentment and collapses forward onto his chest. Shigure doesn’t mind, what with the pile of pillows beneath him, and the fact that he’d been enhanced beyond baseline human anyways. Instead, he simply cradles the dark-haired Servant in his arms, enjoying the soft feel of her feminine form against his naked, masculine body. His cock twitches inside of her cream-stuffed cunt, and Shigure knows that he’ll soon be ready for a second round.
 
So will, Raikou, he somehow knows this instinctively. So long as he demands it of his beautiful, buxom ‘mama’, Raikou will give him her everything. And Shigure intends to take advantage of that fact for a VERY long time indeed.

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