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Natsuki had long since stopped packing cupcakes for herself as part of lunch.
It was nice being able to have a more balanced meal for one thing, or so she told herself. The other part was that ever since Monika had realized she sometimes just made baked goods for herself alone? Their Club President was absolutely hell-bent on making sure Natsuki never managed to enjoy them properly.
It wasn't some old-school 'haha chocolate laxatives go brrr' thing either. Given her really kinda horrifying power over reality, Monika was creative about her manipulations. It was supposedly for Natsuki's own good, to remind her to share and take advantage of her newfound control over the household food budget. And the same kinda process did kinda work for Sayori, helping bring their mutual friend out of her periodic funks and slumps and slowly guide her to better self-care.
But Natsuki didn't think she needed help and she didn't appreciate having her cupcakes run away or make her frickin' glow or whatever. So she'd stopped packing her solo private personal 'cakes. For a while. But not for today. She had made sure Monika wasn't even present at lunch due to some special event for club leaders, avoided any hint of giving away the game in advance, and now she had a decadent buttercream-frosted vanilla delight to mow through.
Each bite was a little burst of intense personal pleasure: She'd really outdone herself this time. Every angle was perfectly-balanced with thick creamy icing and moist rich cake. The light hidden bit of cinnamon-spice in the cream was matched by the subtle flows of salted caramel inside the body of the cake itself. Natsuki nibbled and bit her way through one piece after another until the whole palm-sized treat was complete, and then she basked in the afterglow.
Honestly it was just shy of orgasmic. Hell she absolutely had felt little just-shy-of-cummy aftershocks from her own cooking before and she was NOT afraid to admit it. This one absolutely took the (haha) cake though, leaving her entire body feeling warm and languid and even slightly heated. Kinda flushed and maybe even a bit sticky-wet... actually, fuck, was she-
Natsuki reached down subtly under the desk to check herself and found a veritable fuckin' flood. She was soaked and tingling down there, which meant what had been a cautious check for her status quickly turned into an unapologetic solo grope sesh instead. Her breathing shifted into moaning and then her moaning into hisses of pleasure within seconds, even as her free hand joined the one she'd used for inspection and then the whole thing shifted.
In retrospect, the moment when Natsuki probably should have noticed something was wrong was when she went from plowing two-knuckles deep into her own lips, to stroking an energy-drink can of a cock that had made its way out from between her own legs. In the middle of it all she just kept riding out the insane pleasure instead, feeling every little tug stroke and shift of her (triple-ruined, by girlcum and precum and straight-up massive stretching) panties around her new equipment.
Her already-obvious noises got even moreso at that point, damaged fabric tearing and splitting as she kept two-handing herself and groaning. That meant it didn't take long for Yuri, the only other member present in the Club that afternoon, to come over and check what was going on. Natsuki was too far gone to even really explain herself: Her friend found her slumped over the desk and drooling onto the surface, her empty lunch bag discarded off to the side and a whole different kind of smell radiating from the space.
"N-natsuki, are you-"
She didn't get an answer verbally, but she definitely got one: A thick gobbet of pre spilled out from under the desk and splattered across one of her shoes. The taller girl looked down with a very blank expression before slowly leaning down, bending, looking underneath...
"Oh. Yes I have to imagine you need help with something like this."
Without any impression that this was strange or even out of place, and completely free of her usual reticence? Yuri went from leaning and bending to kneeling and crawling, getting under the desk and pushing herself up between Natsuki's knees. She couldn't see down there to be sure (and was far too horny to think about it regardless) but she must have gotten right up there, just inches away and staring in the barely-shadowed space. Moments passed that could have been minutes or hours before suddenly a soft wet insanely welcome pressure was put against the tip of Natsuki's problem.
That first tentative press became a kiss and then a lick and then a suck and inhale, her busty on-again-off-again girlfriend rapidly progressing through all the stages of a blowjob in seconds. She practically yowled and screamed in response, fists clenching and falling away from where they had been busily stroking before. Yuri slid down further before pulling all the way back, the meaty swollen head popping out from between her lips for a moment. Her own larger hands went to work for a moment giving Natsuki several long strokes before being joined again by her mouth, diving down down further and further...
After what felt like an entire year of that treatment, millions of stars crushing the space behind her eyelids, and enough precum to dehydrate a freaking horse, Yuri pulled away with a long rough throat-ravaged 'mwah'. Both of them took the few seconds of peace to catch their breath and try to recover... but then Yuri was back above the desk. Her cheeks were flushed, the entire front of her shirt was soaked in spittle and pre and her tits were hanging out, the buttons lost to the floor at some point. She held up a hand and pushed it towards Natsuki, letting her get a head-sizzling faceful of their shared scents before she decisively lifted one leg and stripped her own panties off.
They didn't exchange any words, her friend simply bent over the desk in front of Natsuki's and lifted the back of her skirt to allow access. She was nearly as turned-on as Natuski felt, hot and red and flushed and drippy and smooth, must have shaved just last night she was so clean and everything was string and sticking and Natsuki could not think.
She jumped out of her chair with a clatter and lunged onto the other girl, barely managing to line herself up and drive in with one frantic motion. Both of them were making unspeakable noises at this point, and those were soon joined by the constant slap of hips meeting ass and balls striking clit, Yuri shuddering as she took every inch of Natsuki's new length without so much as a thought in either of their heads. It wasn't lovemaking or even fucking it was just brutal animalistic rut, and it felt like it either lasted a minute or their entire goddamn lives.
When Natsuki unloaded she froze up like a statue and Yuri twitched and shook like a possession victim: Neither of them could do anything other than let it flow through them and out of them as a pair of drawn-out screams of passion and needy release. When those sounds died down the only other audible thing in the Literature Club's classroom was the pitter-patter of seed and lubricant dripping from the both and staining the floor...
And clapping.
A smug voice overtook that sound as well, coming from only a few feet behind them.
"See, I told you they'd go for it right away."
"Awww, that doesn't count Moni: Bets have to be fair!"
"How was this not fair?"
"You were only supposed to mess with Nat-tan, not Yuri too."
Monika laughed, the first thing Natsuki coherently heard since she finished her food.
"Ahaha, I didn't. That was just... Yuri being Yuri, for what it's worth. I can show you the logs!"
Sayori stomped a little, probably pouting.
"Hmph. Fine, I owe you breakfast for the next week then. But I'm gonna get you next time!"
Natsuki barely managed to croak out a reply from her puddle of fluids and near-fluidized girlfriend.
"If you two could stop making bets about our sex life that'd be great actually."