(Every character depicted in the story below is a consenting legal adult over the age of 18)

Poll Winner

Themes: Threesome, Rough Sex, Breeding

Summary: Xenovia is a professional fitness coach and a good friend of both Irina's and Issei's. When Rias hires her to keep them both in shape, she takes her job very seriously... at first. But of course, Rias has ulterior motives and eventually seduces Xenovia into a threesome. After all, she's always been a visual learner. If she's going to ever be able to do squats on Issei's cock, she needs someone else to show her how they're done~

-x-X-x-

“What in the world are you doing?!”

That, Rias has to admit, is a fairly good question considering Xenovia has just walked in on Rias squatting over Issei’s big fat cock, slipping a few inches of his massive, throbbing dick up into her pussy.

On the face of it, this should have been a rather embarrassing and humiliating moment for Rias. Here they were in the gym where she and Issei had regular sessions with their private fitness trainer, Xenovia Quartra. And rather than warming up in anticipation of their session like they were supposed to, Rias was impaling herself on Issei’s cock, for all intents and purposes looking like she was trying for a quickie.

Obviously, the correct thing to do at this point would be to pull off of Issei’s cock and fix up their clothes and start apologizing profusely. But of course, Rias doesn’t do that. After all… everything is going according to plan.

Xenovia wasn’t just their private fitness trainer; she was also a good friend of both Irina’s and Issei’s. That was why they’d hired her in the first place, because Rias knew she could be trusted with the secret of her and Issei’s marriage, just like all of the other girls in their life.

Of course, just like all of the other girls in their life, Xenovia was a smoking hot ten-out-of-ten with an athletic, toned body that just didn’t quit. Put simply, Rias wanted to see the fitness trainer bouncing her own pussy up and down on Issei’s cock and she wanted to see it yesterday.

And so, for the last few weeks now, Rias had been turning up the heat in all of their meetings. Whenever she and Issei got together with Xenovia to work out and train their bodies and keep in shape, Rias had gone out of her way to flirt with Xenovia as much as possible.

Unfortunately, Xenovia took her job a bit too seriously. She wasn’t the kind of woman to let emotions get in the way of professionalism. Once a session began, she didn’t allow it to stop for anything short of injury or illness… and certainly not for something as frivolous as sex.

… So what if they tried something before the session was due to start? What if they set things up so Xenovia walked in on them having sex and had no choice but to either walk away or join in on the fun? Rias had of course run her idea by both Irina and Issei before going through with this, and in the end the two had agreed that Xenovia wasn’t nearly as prudish as she seemed at first glance. She definitely had a thing for Issei… all Rias had to do was make him available.

“Mm… oh hey Coach. I’m just training my squatting form a little bit. You know how I was struggling with it before… so I figured I’d just give myself an ‘anchor point’ to work off of~”

Rias grins as she shakes her ass a little, sliding up and down the top half of Issei’s cock in a half-squat, half-twerk.

Xenovia just stares for a long moment and Rias begins to worry that Irina and Issei were wrong and they might have ruined things with the blue-haired trainer. Just as the awkward tension is growing almost unbearable though, Xenovia scoffs and shakes her head.

“Your form is still atrocious, Rias. Even with an anchor point, you need to stop relying on putting your hands on your legs so much.”

Rias’ eyes light up as Xenovia stomps forward, glaring assessingly at Rias’ ‘form’. She does indeed have her hands atop her legs as she squats on Issei’s cock, her pussy lips clenching down on his length. Rias hums, feigning embarrassment even as she goes for broke.

“Ah, well, I just don’t quite know what I’m doing wrong. You know me… I’m a visual learner. Can you show me how it’s done, Coach?”

The look on Xenovia’s face makes it very clear that she knows she’s being played. However… that doesn’t seem to matter.

“Fine. Get up. I’ll show you what you’re doing wrong.”

Rias blinks as Xenovia reaches down and without hesitation rips a hole in her tight, practically painted on leggings. She blushes a little bit even as she lifts herself off of Issei’s cock, impressed by the other woman’s gusto. Sharing a glance with her husband, Rias gives him a little grin… which Issei replies back to with an exasperated yet fond gaze.

In the end, Rias is the one who’s constantly feeding new women to her amazing, big dicked husband. Issei is sort of along for the ride, even if he inevitably ends up taking charge and dicking down most of said women. Still, it’s not like he’s complaining! He’s certainly getting a lot out of this, arguably more than Rias!

Then again, Rias would be lying if she said she didn’t get a LOT out of watching Xenovia step over Issei’s body and straddle him for a moment before crouching down. Reaching below herself, she grabs hold of his cock, lines it up, and slips him right up inside of her cunt without so much as a ‘by your leave’.

Rias shivers in delight as Xenovia shudders, stiffening for a moment upon penetration. Her lips press into a thin line, clearly containing any noise that might have otherwise exited her mouth. Anything from a whimper to a full blown moan… is lost entirely as Xenovia holds her tongue.

Still, as her pussy lips clench down on the head of Issei’s member, Xenovia looks Rias directly in the eye and assumes the position… specifically, the perfect squat position that she’s been trying to drill into Rias’ head for weeks now. Admittedly, Rias might just finally learn it successfully, now that she’s seduced Xenovia into a threesome~

“Watch closely Rias. This is how you do a proper squat.”

Lacing her fingers behind her head, back straight with proper form, Xenovia breathes in… and then out as she descends. She does her best to keep her composure, but Rias can see Issei’s sizable girth almost immediately gets to her, a slight widening of Xenovia’s eyes giving things away.

She grins a little as the blue-haired woman lifts herself back up… and then slides back down again. By all accounts, if she just wanted to show Rias ‘how it was done’, she would only need to do a few squats before letting Rias ‘try again’.

Instead, Xenovia begins to squat up and down Issei’s length repeatedly, doing first five and then ten and then twenty proper squats. However, as she goes up and down, Rias notices something… Xenovia never goes all the way. Hell, she doesn’t even go as far as Rias was going down his dick.

Oh sure, she’s still maintaining perfect squatting form… she’s certainly showing Rias how it’s done exercise-wise. But sexually, Xenovia seems almost… scared to go further.

Rias can’t help but be a menace. Striding forward until she’s standing right in front of Xenovia, she grins… prompting a suspicious glare from the blue-haired trainer.

“What… are you doing?”

Rias hums, tilting her head to the side and planting her hands on her hips.

“Just getting a closer look. See, it feels like something is off. You’re doing the squats perfectly… but is that really the lowest you can go?”

Xenovia stiffens, her face going redder as she scowls.

“Tch. It’s not about how low I can go, it’s about showing you proper f-form and-!”

Rias cuts Xenovia off… by lifting one leg up into the air and draping it over Xenovia’s shoulder.

“Here, I’ll help you out!”

Funnily enough, she wouldn’t be able to even do this maneuver if it wasn’t for Xenovia’s training and tutelage. The blue-haired woman has made Rias more flexible than she’s ever been in her entire life. Not to mention she’s got some real muscle in her thicc thighs now, rather than just a bunch of flab.

With that in mind, Rias hooks her leg in place, grabs onto Xenovia’s other shoulder with a hand… and pushes.

Xenovia’s eyes widen as she goes into a much deeper squat than before and promptly winds up taking Issei’s entire cock up into her cunt. Rias feels the moment Issei hits Xenovia’s cervix through the blue-haired woman’s body and a shiver of delight runs down her spine.

Meanwhile, Xenovia’s mouth is open in a silent scream… that swiftly transforms into a wanton, squealed moan as she shudders and very visibly, very clearly orgasms explosively right there on the spot.

Rias’ eyes light up as Xenovia cums and spasms all over Issei’s dick, making a mess of her already torn leggings and whimpering. At the same time, her form remains impeccable, her hands still laced behind her head and her legs and back perfectly postured all while her ass cheeks are kissing Issei’s crotch.

Panting heavily, Xenovia looks at Rias with a growl.

“You…”

Rias though… well, she’s already got a leg draped over Xenovia’s shoulder. And a hole in the crotch of her own workout leggings. Is it any wonder that she grabs their trainer by the hair and drags Xenovia in close, grinding her cunt right into the other woman’s face.

To her credit, Xenovia barely even hesitates before beginning to tongue Rias’ cunt. She starts eating Rias out on the spot, causing her to moan and groan and toss her head back in pleasure.

Down below, Issei finally stops being a bystander and begins participating. His hands come up and grab Xenovia by her itty bitty waist, squeezing down firmly as he holds her steady. Then, he starts to slam up into her from below while bouncing her on his dick all the while.

Needless to say, the reverberations from Xenovia’s moaning cries going through Rias’ pussy as a result are absolutely delightful~ Rias moans and groans, shuddering and shaking as she clings to Xenovia’s hair for dear life. The sounds of flesh slapping against flesh fill the room along with sucking and slurping and squelching noises.

Eventually, Rias lets out a shrieking cry as she climaxes all over Xenovia’s face, squirting into the fitness trainer’s mouth. When she’s done, she pulls back and looks down into Xenovia’s dazed eyes, panting and smiling.

“You’ve been great, Xenovia. As always. Is there anything Issei and I can do for you? Anything at all?”

It takes a moment for Rias’ words to register… and when they do, a new light enters Xenovia’s eyes and she suddenly grows very determined.

“F-Fill me up… cum in me… knock me up! I w-want to be bred!”

Rias’ eyes widen… and then so does her smile, turning into something wicked and gleeful as she cackles a little bit.

“Ohoho! You heard her, Issei! Knock her up!”

Issei doesn’t hold back. He fucks Xenovia even hard from below, until his entire lower half is lifting off the ground to drive up into her and her taut abs are distending to show the outline of his gargantuan cock with each thrust.

PLAP! PLAP! PLAP!

Until finally, as Rias watches in with a pleased grin, Issei slams Xenovia down onto his dick one last time and proceeds to fill her up and breed her on the spot. Rias giggles as Xenovia’s eyes roll back in her skull and her tongue lolls out of her mouth.

Even a certified tomboy like Xenovia was no match for her husband’s big… fat… cock~