Chapter Text
Weiss couldn’t quite put her finger on it, but something had been off with Ruby for the last few months, since the beginning of their third year at Beacon, really. After the debacle of how their first year had ended with the near destruction of Beacon, things had settled down to a relatively uneventful second year of studies. The only notable thing that had happened was that Blake and Yang had started dating, whilst Weiss and Ruby had not, despite Weiss’ pining from afar.
After the break, however, something seemed to have changed about Ruby. Gone was the unsure and anxious teenager to instead be replaced with a confident young woman. To say it did things for Weiss would be an understatement. That wasn’t all though. Ruby had gotten more private as of late. It wasn’t much or very noticeable, but given how much attention Weiss devoted to her team leader, she took notice of a lot of things about Ruby that the others would miss.
It would have been wrong to expect Ruby to stay exactly the same throughout their time together, but this change had felt so sudden. It felt like one moment Ruby had still been that young and perhaps a little naive optimist, and the next she was this cool and collected person that Weiss felt like she barely recognised.
Neither Yang nor Blake had listened to her. As far as they were concerned, Ruby was just the same, and it was easy to see why they thought that. Ruby was still all smiles and cheer a lot of the time, but she carried herself differently now.
Come to think of it, Blake had seemed a little off too lately. More out of it than the alert cat Faunus usually was. Again, Weiss had tried to bring it up with Yang, but the blonde had shrugged it off as Blake finally starting to settle down after all the trauma she’d been through in the past.
So for the time being, Weiss had let it lie and got on with her studies and tried not to let herself get any more distracted by Ruby than her feelings for the leader already made her.
It had started out like any other Saturday. Yang was off doing her computing elective. After the hacks at the last Vytal festival, Yang had gotten rather interested in cybersecurity. Weiss had wanted to do some studying in the library with Ruby, but she’d been brushed off, and when the offer had been extended to Blake, it had been similarly rejected.
Weiss had spent almost the entire morning poring over books and writing her essays. Once upon a time, Ruby had suggested that, after the first year, their theory classes would taper off and they’d end up doing my practical ones. She had been very very wrong.
As it turned out, fighting wasn’t the only thing they needed to be proficient in. There were a vast array of other skills needed to be a professional huntress, and Weiss’ specialised area of study revolved around Grimm biology and evolution. Widely acknowledged to be one of the most difficult classes, Weiss normally appreciated the challenge, but today her mind kept wandering to her partner.
After several minutes of non-productivity, Weiss finally gave up on trying to write out her essay on the corrosive effects of Grimm blood on flora and started gathering up her things. It was clear she wasn’t going to get much done today. Sighing deeply, Weiss packed her bag and left the library to head back to the dorm rooms. Perhaps a short nap would do her some good.
Weiss trudged along the corridors, admiring the new construction after the wing had been crushed by falling debris during the Battle of Beacon. It had been a hard fight, with many casualties, including Professor Ozpin of all people, leaving Professor Goodwitch as head of the school. They’d all been changed by the experience. Pyrrha still walked with a bit of a limp, Blake’s scar gave her issues sometimes, and Yang’s arm…
Weiss flicked herself on the forehead to stop herself from thinking such things. They’d all made it out alive, and whatever the plan had been, it had failed. Making her way up the stairs, Weiss walked along the deserted corridor to Team RWBY’s new dorm room, which was quite a bit bigger than the one they’d had in first year and even came complete with a separate living area.
With a grateful sigh, Weiss opened the door and walked into the room, dropping her bag on the sofa and collapsing face first into it. A nap sounded really quite good about now, if only that rhythmic thumping and squeaking would just stop.
Wait, thumping? Weiss pulled her face out of the cushions and listened intently. It was coming from inside their dorm. Getting to her feet, Weiss walked around the area trying to determine where it came from and eventually realised it was coming from the bedroom. As Weiss approached the door which she now realised was slightly ajar, Weiss could also hear what sounded like moaning, and she realised what was happening. Yang must have finished up her course early and come back to spend some intimate time with Blake.
Rolling her eyes, Weiss walked up to the small gap, expecting to have to burst in and remind the amorous couple to remember their system for letting her and Ruby know when they were busy. As Weiss got to the door and peered in through the gap though, her heart froze.
It was Blake alright, completely naked and bent over her bed, face buried in the blankets, but that wasn’t Yang pounding away at her with a gleeful fervor.
It was Ruby.
Weiss’ brain ground to a halt as she watched the lurid scene and as she did so, Ruby reached out and wrapped a hand in Blake’s hair, pulling the other girl’s face up.
“Do you like this, kitten? Do you like getting fucked by your girlfriend’s sister?”
“Y-Yes!” Blake gasped out, her tongue lolling out as she thrust her hips back to get as much of Ruby’s dick inside of her. “Fuck me, fuck my slutty pussy!”
Weiss knew she should be doing something, bursting in and confronting the adulterous pair, but all she could do was stare at Ruby’s perfectly sculpted body in awe as a fire kindled inside of her. Ruby kept up a fast pace, her hips slapping against Blake’s shapely rear with a loud and rhythmic sound that seemed to shake Weiss to the core.
She was conscious of an unwelcome stiffening in her panties but she was too enraptured by the scene before her to do anything about it. She shouldn’t be turned on by this, it was wrong, so very very wrong, but she couldn’t tear her eyes away.
Weiss’ tongue darted out to wet her lips as she focused in on Ruby’s dick as it slid in and out of Blake’s pussy. She wanted it so much. She’d fantasised about Ruby’s gorgeous dick many times ever since she’d learned about it by catching a glimpse in the showers a while back.
Why couldn’t it be her Ruby was fucking with reckless abandon? Weiss wanted to feel it plunging into her, stretching out her hole and tying her and Ruby together in love and lust. Weiss was fully hard now, and much as she was loath to do so, her hand drifted down to slip under her skirt and run a hesitant finger over the head of her penis.
Weiss’ hips bucked and she had to bite her lip to prevent a moan from escaping. She hated that the body part she despised so much brought so much pleasure, but it didn’t stop her from wrapping her hand around it and starting to pump it back and forth, smearing her precum over the shaft as she continued to watch the scene playing out before her.
Blake’s eyes were closed now, but she kept letting out blissful moans and gasps as Ruby hammered into her, hissing into the Faunus’ ear as she did so.
“You love it, don’t you? My slutty little kitty.”
“Yes, Ruby, I love feeling you inside me, I feel so empty without you.” Blake answered rapturously as Weiss’ hand picked up the pace, twisting and rubbing over the tip of her penis. This was so wrong, but maybe that was what made it so hot.
“You want my cum, don’t you? Where do you want it?” Ruby asked and Blake moaned loudly again, squirming as she was teased by Ruby.
“In my pussy, my mouth, my ass.” She gasped, drooling now as she continued to take Ruby right to the hilt. “Everywhere. I want you to cover me in it. Show Yang who I really belo-.”
Blake’s babbling was cut off by a hard slap on her ass and she yelped in pain as Ruby’s lustful gaze turned harsh. “Don’t forget you’re still Yang’s girlfriend, kitten.” Ruby growled, slowing down her pounding as she instructed Blake, slapping her a couple more times. “I am not her replacement and she’ll join us soon enough.”
“You promise?” Blake whined, her eyes tearing up from the pain. “You’ll do this to your own sister?”
“Don’t you worry about the details yet, kitten, just know that you’ll have a part to play as well, and we’ll all be happy together.” Ruby’s smile turned smug and almost sickly, so very different to how she normally was, yet infinitely hotter. It was all Weiss could do to stop herself from whimpering in pleasure as she stroked herself and wished she was the one beneath Ruby. She was too turned on to pay much attention to what Ruby was telling Blake.
Ruby stopped talking and refocused on fucking Blake as hard as she could, her hands wrapped around Blake’s waist, occasionally letting them slide back to caress Blake’s generous ass. Moaning in wanton pleasure, Blake was unable to hold herself up anymore and she let her face and shoulders fall to the bed, her saliva staining the sheets as she continued to drool, her eyes starting to go blank and absent.
It was without a doubt the hottest thing Weiss had ever seen, and she both wanted to see more and stop it at once. She should be stopping it, but she was transfixed by the carnal act before her. How long had this been going on for, both Ruby and Blake fucking behind Yang’s back and Weiss standing here watching them, desperately trying to reach orgasm with her hated penis?
Weiss needed to cum, needed to get all this tainted lust out of her. It felt as though Weiss was at war with herself, being torn into pieces by her impulses and rationality. She wanted to stop them. She wanted to keep watching. She wanted to cum. She wanted to cry. She wanted to moan and scream in ecstasy. She wanted to collapse to her knees and lap at the point where Ruby’s cock slid into Blake, and let her tongue dance over Ruby.
All this and more roiled and boiled inside her, and all the while, her stroking got faster and faster in time with Ruby’s hips as she thrust more and more. Ruby’s tempo speeding up, hilting herself inside Blake on each thrust until suddenly she withdrew completely.
“Turn around, kitten.” Ruby instructed, her own hand continuing the frantic pace as Blake flopped and rolled in an undignified manner off the bed and onto her knees before Ruby. With a desperate moan, Blake lunged forward and, to Weiss’ shock and delight, took all of Ruby’s dick down her throat in one go, her nose buried in the neat tuft of hair just above it.
Weiss watched in awe as Blake’s eyes rolled back and she gagged on Ruby’s dick. She tried to pull back, but Ruby’s hand shot out and grabbed the back of Blake’s head, holding her in place. Blake continued to gag, her eyes rolling back as spit leaked out of her mouth and dripped off her chin.
“That’s it, kitten, take it all.” Ruby cooed almost lovingly, twisting Blake’s dark tresses between her fingers and using it as leverage to give a couple more thrusts. Blake looked as though she was about to pass out when Ruby pulled her off her dick and let her gaze up in adoration at Ruby.
“Thank you, Ruby.” She gasped, her voice hoarse from having Ruby’s dick down her throat. “Thank you for letting me suck your dick.”
“You’re welcome, kitten.” Ruby grinned down at Blake who took Ruby’s dick into her mouth and sucked at it in earnest. “You want to swallow my cum? I know how much you love its taste.” Blake could’t answer with her mouth full of dick, but she nodded as best as she could as she continued to lavish attention on Ruby.
Jealousy simmered in Weiss’ chest as she watched Blake drool and lather spit all over Ruby’s dick. Weiss wanted to be there, though in her current state she wasn’t sure if she wanted to be the one on her knees or standing over Blake. Weiss had never felt all that attracted to Blake before now, but watching her give oral service to the girl Weiss loved was making her feel all sorts of strange feelings.
Weiss thumbed the head of her penis, collecting up more precum and smearing it over the sensitive slit as she bit back another moan. She was getting close, she could feel it. Inside the room, Ruby picked up the pace, thrusting hard and forcing Blake’s nose into her crotch on each thrust.
“It’s coming, kitten, get ready.” Ruby panted and Blake’s bleary eyes lit up and she redoubled her efforts, while Weiss gasped and squeaked quietly, getting close as well. “Here it comes!” Ruby announced, holding Blake all the way down on her cock. Weiss bit her hand hard as she came in sympathy with Ruby. Weak jets of clear cum squirted out of her penis and she watched as Blake’s throat bobbed as she eagerly swallowed down Ruby’s load and her eyes darkened with lust.
Weiss was enthralled by watching Blake swallowing Ruby’s cum, until she looked up and saw a smirk playing across Ruby’s lips as she appeared to be staring right at her.
With a stifled squeak of fear, Weiss stuffed herself back into her panties and fled, not looking back.
Weiss spent the rest of the day in a haze. Had she really just seen that, or was it all some elaborate fever dream? She knew it wasn’t a dream though, the cum stains on her panties were proof enough of that. Weiss should have gone to tell Yang immediately about how her sister and girlfriend were going behind her back, but every time she thought about it, a voice in the back of her head told her she couldn’t.
She’d watched for who knew how long, watched Ruby and Blake act out such carnal indecencies, and had gotten off to it, and the knowledge that she had wracked Weiss with guilt. She was just as bad as Ruby and Blake. How could she tell Yang when she’d done nothing to stop it? Instead she’d pleasured herself to it, enjoyed watching Ruby defile Blake over and over whilst she made the Faunus sing their leader’s praises.
It was evening by the time Weiss had returned to the dorm room, and she found no evidence of the crimes committed by two of their number. The whole team had gathered in the communal area for their regular Saturday night movie, and Weiss found herself in the now-uncomfortable position of being sandwiched between Ruby and Blake.
They normally sat in this arrangement, and under more usual circumstances, Weiss would be more than happy to sit next to her crush. Today, however, all she felt was a massive sense of unease as she sat between two women who only a couple of hours ago had been fucking each others’ brains out.
Ruby didn’t mention how she’d seen her watching them, not even a light hint, and Weiss was now fairly certain that she’d imagined that part. It was hard to really recall exactly what she’d witnessed. What she was sure of was how Ruby seemed to be a little more flirtatious than usual. Normally, Weiss tried to keep at least an inch between herself and Ruby, lest something untoward were to happen. Today, however, Ruby seemed to be taking every opportunity to brush her leg up against Weiss’, and Blake seemed to be doing the same.
Weiss had no idea what to do. She should call them out, tell Yang what had happened, and she had nearly done so. But the words had died in her throat as she watched Blake nuzzle into Yang’s neck and saw the lovestruck expression on Yang’s face. She couldn’t be the one to break Yang’s heart like that, even if she had to. She just couldn’t bear to cause someone she loved as dearly as Yang that much pain.
Glancing over at Blake and Yang, Weiss had to stifle a yelp of shock as she saw Blake and Yang kissing deeply. Weiss’ stomach knotted as she remembered how earlier on Blake’s lips had been wrapped around Ruby’s dick and how those lips were now pressing hungrily against Yang as though her life depended on it and she hadn’t been cheating.
“You using a new chapstick, Blakey?” Yang asked, running her tongue around her lips after they drew apart. “Tastes good.”
“I am. You can borrow it sometime, if you like.” Blake smiled, and Weiss could have sworn she saw something sinister lurking just behind it.
“You okay there, Weiss?” Ruby asked, light concern in her tone, and Weiss almost believed this was the same Ruby as always.
“I’m fine, just had some difficulty with my essay.” Weiss deflected hurriedly.
“Oh, would you like some help with it?” Ruby blinked innocently at Weiss, further confusing the heiress.
“I appreciate the offer, Ruby, but you don’t take Grimm Studies.” A small knowing smile tugged at the corner of Ruby’s mouth.
“I know a few things, but I guess it probably wouldn’t be much help.” Ruby admitted before nuzzling into Weiss’ side affectionately leaving the poor heiress even more confused as to what exactly was going on with her team.