Actions

Work Header

Shirou’s Super Duper Awesome Girlfriend Tricks Him Into Turning Her Friend Into a Brain-Dead Pet!

Summary:

Ruby really liked her boyfriend. Like, really really liked.

Her life was so much better with him in it, especially with all the bed-breaking sex they regularly had.

And she just knew that Blake's life would also be so much better with him in it. Even if she didn't know that yet.

Not to mention just how much she wanted to watch Shirou hollow out Blake's brain with his cawk~

Notes:

Thank you to anonymous for prompting this story!

Work Text:

Shirou was still feeling hesitant, even as he stood in front of the door leading into his girlfriend’s dorm room.

Despite all of Ruby’s reassurance, he still was a bit unsure on how he felt about sleeping with another woman, but Ruby had just been so insistent- It was a strange sight! Usually, Ruby was a lot more, possessive? Maybe that wasn’t the right word for it, but it seemed right when he thought of her.

She even insisted on him never jacking off so she could get all of his cum for herself.

Apparently, she liked it when he pumped her so full of cum she looked pregnant, and though Shirou could still easily do that even without the ban on masturbation, he could also simply fuck Ruby whenever he did get horny, so it wasn’t as if this was some huge sacrifice on his part. 

Especially since his girlfriend was such a slut.

And that wasn’t an insult. It was just a fact. Seeing her now, you’d never imagine that Ruby had been a virgin before meeting Shirou He himself had been worried at first that she wouldn’t be able to keep up with his inhuman sex drive when they first started flirting and going out. 

But from the very moment he’d first sheathed his feet-long cock into Ruby’s pussy, spreading her womb wide and making the girl look like a living onahole, only for the cock-drunk girl to beg for more, he knew he’d finally found his match.

Now, she insisted on draining at least one load of cum from him every day, dragging him into alleyways or slipping under his table in the middle of the cafeteria to get her own meal, and often needing to be fucked into a coma every night so that he could get some sleep himself.

All of that contributed to his confusion when she proposed bringing someone else into their fun. And a specific girl at that.

Blake Belladona.

Shirou wasn’t blind- He could see that since she’d discovered sex, Ruby had been seeing the world with new eyes, and that included a newfound appreciation for the feminine body. 

Apparently, he’d ruined her for every other men, so now she could only find women sexy. 

And she did find them sexy often. She didn’t hesitate to stare at even her own sister’s admittedly great tits, but he hadn’t expected this newfound attraction to go this far. Though, he also had to admit, Blake was a sight for sore eyes, and he’d gotten along well enough the few times they’d talked, but that hardly mattered in this affair.

At first, he’d been against bringing Blake in. He just, doubted that any girl could compare to Ruby, and he would feel bad if they brought someone in just for Shirou and Ruby to fuck in front of them, but Ruby had quickly disabused him of that notion. She’d even insisted that they would both be focused on the girl instead of on herself or himself.

So, he’d told her, as long as she was willing and aware of what he was capable of, he was fine with it, prompting Ruby to jump for joy and to insist on having celebratory sex right then and there. Which they did, despite having just arranged to have sex at a later date.

The two truly were a match made in heaven.

But no amount of sex with his girlfriend could stop time from moving forward.

And now, it was finally time to put his money where his mouth was.

Shirou took a deep breath, rolled his shoulders, and stepped in, smiling slightly as his sight was immediately obscured by Ruby’s tits shoved in his face. 

“Hello Shirou!” She cried happily, naked as the day she was born, hugging his head tightly as he stepped inside, closing and locking the door behind him. He opened his mouth to answer, already feeling his cock hardening, only to blink as Ruby leaned down slightly to whisper in his ear.

“Blake insisted on some roleplay. You know the kind of stuff she reads. Act confident.” She whispered quickly before letting herself fall back down to the ground as muffled sounds and clutter began sounding from behind her.

Shirou looked down at his girlfriend confused, before looking up at the room, and blinking as she saw their guest.

Blake Belladona was naked as well, stripped down completely, but her body was not bare for it, since she was tightly tied to a chair. Her arms and legs were held in place by thick ropes that crisscrossed her body, doing a great job of highlighting her lithe chest as she, glared at Shirou?

She tried to say something again, but a bright red ball gag had been shoved in her mouth, stopping her words from being understood.

And Shirou forced himself not to show his obvious confusion. He did, in fact, know the kind of stuff Blake read.

The kind of plotless story where the heroine always got captured and defiled by the villain, written purely for porn.

Was this- some sort of recreation of that kind of scene?

He shot Ruby another look, but she only winked at him, before walking toward Blake, sashaying as she did. “I caught this little kitten sneaking around- And I thought she’d make a nice pet!~” Ruby explained, turning back toward her as she flicked one of Blake’s cat ears, making her flinch, before mumbling something incomprehensible back as she glared at the girl, before turning to glare at Shirou.

Damn. She looked really mad. Was this actually fine? Ruby had told Blake what was going on, right?

Shirou shot Ruby another discreet look as she walked behind Blake, and she shot him a wide smile and a thumbs-up, prompting Shirou to let out a slow breath.

Ok. If this is how Blake wanted to do things, he could play along.

So, he forced his face into a more appropriate smirk as he walked closer to the tied-up girl. “How thoughtful.” He said, his hand rising to grope one of Blake’s boob, prompting the girl to struggle in her seat, shaking the chair from side to side, and he clicked his tongue. “But she seems so poorly trained- I doubt she’d make for appreciable company. I hope you didn’t forget something so basic?” He said, trying to signal to Ruby that he still wasn’t sure where this was going.

He could hardly have sex with Blake when she was trussed up like this, so what had the girls planned?

Ruby grinned widely as she rested her hands on Blake’s shoulder, limiting her movement even more. “Of course not! I simply thought you might enjoy breaking her in yourself~” She said slyly, her hands gliding up the sides of Blake’s head, before ending up in her scalp.

“Did you know that Faunus ears are for more than hearing?~” Ruby asked, a finger slipping inside Blake’s ear and making the older girl freeze in place for a moment.

Shirou had also frozen. Did Ruby mean- Shirou watched, slack-jawed, as Ruby’s finger began sliding deeper into Blake’s ear, sinking a knuckle, two knuckles, three knuckles inside before Blake violently shook her head, forcing it out.

The Faunus was panting heavily through her gag, her chest heaving as her eyes zipped from Shirou to Ruby and then back again.

“But as you can see, I’m just not strong enough to do anything by myself~” Ruby said as she walked back to Shirou with a wide, hungry smile. Her hand stroked his hardening cock through his pants once she reached him. “And I don’t have the necessary tool to get deep enough~” She said, and Shirou gulped as his pants strained.

Fuck, he needed to get these off him now.

He barely had the time to think before his cock was free, and pointing directly at Blake’s head. The girl was staring at Shirou’s cock with wide eyes, seemingly stunned- which made sense.

Even if Ruby had warned her, it was very hard to prepare yourself for a cock that was over two feet long and thick enough to match. It was hard to imagine any woman being able to take it, but Aura allowed for some miraculous things.

Still, an ear?

Shirou’s eyes couldn’t help but stare at them for a moment, trying to imagine how that could possibly feel- and his cock throbbed, a thick drollop of precum leaking from it and falling to the ground with a wet splat.

As if breaking a spell, Blake suddenly remembered her ‘character’, struggling mightily against her bonds as she ‘tried to free herself’, but Ruby and her had clearly worked together very well, because all it did was make her tits bounce around, which only fueled Shirou’s desire to actually try his hand at this.

Before he could even notice the look of pure panic on Blake’s face, he began marching around the Faunus and stepped up to her side. One hand fell on her scalp, holding her in place, while the other pulled on her ear, making it stand up straight.

Shirou stared down at it for a moment. He couldn’t see anything but pure blackness, and he gulped as his cock throbbed.

Fuck it.

Shirou’s grip tightened as Blake’s struggles intensified. He pressed his massive cockhead to Blake’s ear, shifting his hips as he stared at the juncture of their bodies.

Then, he took a small step forward.

Blake squealed like a stuck pig as her earhople was stretched around Shirou’s cock, and he grunted. It wasn’t in yet! 

He shifted his weight, adjusted his grip around the struggling Blake’s head, and THRUST!

MMMMMGNGNUUUUUU!~” Blake cried out as an inch of cock sank into her head, and Shirou felt a shiver of pleasure travel up his spine.

This was completely unlike anything else he’d ever felt. But in a good way. A very good way~

He licked his lips as Blake panted heavily, before grunting as he sank even lower, making Blake howl behind her gag. His grip adjusted, his second hand joining the first now that he no longer had to hold her ear into position, and his eyes fluttered as more and more of his cock sank into Blake’s ear- more than should reasonably have fit inside to be perfectly honest- but Shirou didn’t even notice.

No, all he cared about was forcing his hips ever onward, sinking deeper and deeper into Blake’s head, even as the girl’s cries and howls slowly morphed into weak whimpers and moans, her struggles turning into uncontrolled twitches as she drooled over herself, a puddle of her femcum growing in her chair.

She still weakly tried to shake her head free, her amber eyes rolling wildly in their sockets, jumping from him, to Ruby, to the door, as if she was worried someone would walk in and spoil their fun, but she didn’t have to worry.

He’d made sure to lock the door.

Blake must’ve realized it as well as she shivered, an orgasm tearing through her, her eyes rolling into the back of her skull for a moment, before fluttering as she tried to refocus them through the barrage of pleasure,

Normally, reassurance that she was enjoying herself would’ve made Shirou’s earlier doubts vanish, but he no longer even cared. He had a mission now.

His cock was only halfway in. And he wasn’t stopping until he was balls deep into Blake’s brain!

He grit his teeth, every muscle in his body flexing as his grip tightened. Blake groaned as his cock began sinking once more, panting breaths shaking her body as tears ran down her eyes from the intense pleasure, frantically struggling against the ropes binding her in place- Until something in her head just broke.

She came explosively, spraying the room at large with her juices as Shirou smashed his hips against her head, his cock suddenly piercing through Blake’s head to exit through her other ear, some unknown resistance finally giving up in the face of Shirou’s determination to break her brain on his cock.

Blake’s eyes had rolled into the back of her head completely as her brain was fried with pleasure- not to mention being turned to mush by Shirou’s cock. 

And then, now that Shirou had accomplished his goal, he could focus on enjoying himself.

Even if Blake hadn’t been gagged, her words would’ve been incomprehensible as Shirou began fucking her brain in earnest, his balls slamming against her cheek with every one of his IQ-destroying thrusts. All the Faunus could do was try and survive the onslaught, even as her brain was reshaped around Shirou’s cock.

Combat techniques, Faunus rights, even the very reason why she’d needed to be tied up by Ruby in the first place- All of it was pounded into nothingness, turned into a meaningless slurry of pure pleasure and forced out through repeated orgasms, until all that remained was literally cock. Shirou’s cock.

And though his own mind remained clear, Shirou was having just as good a time. There was something addicting about fucking Blake’s ears, something he couldn’t quite put his finger on.

Was it the supernatural tightness? The strange sensation of Blake’s brain being turned into goo around his cock? The way he could see her expression completely fail to hold character as she came her IQ away?

Whatever it was, it led to Shirou cumming embarrassingly quickly, only managing to pound Blake’s brain for half an hour before he finally came.

It was only a last-second instinct that reminded him not to slam balls deep into the faunus, instead forcing his cock to remain inside the Faunus’ head as he roared in orgasm, his cock throbbing angrily as milkshake-thick cum began filling up Blake’s head, drowning whatever brain cells managed to survive in a torrent of virile cum.

The faunus’s eyes rolled wildly in their socket as cum overflowed from her brain, shooting out her other ear, dripping down her nose- She choked as cum began leaking past her gag, before the flow became so intense it was ripped off her as she vomited cum all over the dorm floor.

“No!” Ruby suddenly cried as she jumped into Blake’s lap. “Bad Kitty! We do not waste cum in this household!” She said, before beginning to make out with the braindead Faunus, eagerly drinking all the cum escaping Blake’s brain.

Shirou groaned as she saw the two sexy girls making out, his cock throbbing inside Blake’s head at the sight, before rolling his shoulders, and adjusting his grip. 

He wasn’t nearly done. And he was sure Blake would be fine with a few more rounds of this. 

She’d agreed to this, after all.

And so, Shirou continued fucking Blake’s ear for the next several hours, painting her brain again, and again, and again, until Ruby had drunk so much of his overflowing cum that she looked like she’d been the one at the receiving end of a multi-hour sex marathon.

Blake was completely catatonic, the only sign of life she offered being her cunt regularly spasming as it came from the aftershocks of pleasure still coursing through her body, even after Shirou pulled out, his cock finally softening.

He stared down at Blake’s fucked stupid body, the blissful, brainless smile on her face, the tear tracks running down her cheeks. Her eyes were completely rolled back into her head, as if she was still trying to stare at Shirou’s absent cock.

What he couldn’t know, of course, was that Blake was currently trying to put her mushy thoughts in order, trying to make sense of her fractured mind, trying to think about anything other than Shirou’s cock- but she couldn’t. Every single one of her neurons was tainted, corrupted, and stained with his virile cum, reshaped and rewired by his girthy cock to only produce one output to any query she sent them: Shirou’s perfect, brain-ruining cock~

The room absolutely stunk of cum and sex, and Ruby was panting heavily as she draped herself over Shirou’s back, her fingers slick with her own pussy juices.

“So? Did you have fun?” She asked, arousal coloring her voice, and Shirou smiled.

“Blake didn’t actually agree to this, did she?” Shirou asked, and Ruby blushed, her smile widening.

“Maybe not~” She answered with a giggle, and Shirou chuckled.

“You brat.”

“Hey! Blake clearly needed some relief if she was reading that much smut- And she’ll be much happier being your cumdump anyway,” Ruby replied while pouting, and Shirou chuckled again, shaking his head.

Incorrigible.

He looked back down at Blake as the girl’s body twitched, her pussy fluttering in another orgasm as cum continued leaking from her ears.

Well, he couldn’t say he didn’t have fun. And Blake clearly had fun too. Though…

“Will she recover from this?” He asked, and Ruby shrugged her shoulders.

“Aura should heal her. Though, given this monster-” Ruby said as her hands found his flagging cock and hefted it- “I wouldn’t be surprised if she never fully recovered~” She teased him, slowly stroking his cock, making it throb as it slowly began hardening once more.

“I just got that down.”

“And I need it hard if you’re going to do me like you did Blake~ Do you know how hard it was for me to watch you turn her into your fuckpet while all I could do was drink the cum she wasted and masturbate?~” Ruby said in his ear, rubbing her naked body against his back as she did, letting him feel her hard nipple and wet pussy, and he groaned as his cock grew fully erect once more.

Alright. Blake was a problem for tomorrow. For now, he had another girl to break.

Ruby squealed happily as Shirou spun around and manhandled her, slamming her back onto Blake’s chair, before beginning to fuck her on top of the friend she’d made him break, making her stare down at what she’d brought upon her- which no doubt only fueled his slutty girlfriend’s arousal instead of teaching her any kind of lesson.

He had no doubt that, had Ruby been a Faunus, she’d have offered herself up first, so slutty she was. Sadly, it was not to be.

But as he began making sure her womb was as filled as her stomach, he idly wondered how many more Faunus girls were in the school- and if Blake’s mom planned to visit anytime soon?