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Nagisa is really, truly going to be the death of Ibara.
It started off innocently enough, at one of Cospro’s movie nights that had become routine. They were in front of people, for Christ’s sake. Nagisa had just been hungry and started eating. Not even a lot. Just. A regular, normal snack.
It’s never normal with them anymore, though, is it?
Nagisa burped. Okay, that was also normal. So Ibara had balled her fists and just tried to ignore it.
But even if it hadn’t been intended to tease, Nagisa had definitely noticed Ibara’s reaction. He’d just smiled at her sweetly, then brought a hand to his mouth and let out another small, airy belch.
Definitely on purpose now. The look Ibara gave him could absolutely kill.
(Her hand definitely didn’t move to soothe Nagisa’s stomach. Absolutely not.)
Now, he’s making up for that extra space with copious snacking, eating dainty amounts at a rate faster than anyone should be able to. It so contrasts how carelessly rude he is on… certain other fronts.
He brings a respectable amount of popcorn to his face and eats the whole thing, and no sooner than he swallows he belches yet again, ever so slightly less restrained than before. Ibara presses her thighs together, whining lightly and trying not to absolutely lose it.
She looks around. No one seems to have noticed so far. Nagisa’s burps are soft enough that they can be excused and played off, but Ibara knows that’s not going to stay the same for long, given past experience. He’s giving her that little knowing, barely present smirk, she knows, she doesn’t even have to look at him.
She grumbles out a swear before her hand returns to Nagisa’s stomach.
“Mmh…" Nagisa makes a little satisfied sound that just does unfair things to Ibara. He sighs and settles further into the couch, and he looks so content, it’s almost possible to forget what an absolute tease he is, and how intentionally he’s driving Ibara crazy.
As discreetly as possible, Ibara slips her hand under Nagisa’s shirt and marvels at how big he already is—she hadn’t thought he’d eaten that much yet, but his stomach sticks out cutely and Ibara could die over the way it feels so firmly packed with food. It’s so, so embarrassing, and probably one of the worse decisions she’s made, but she can’t help when she quickly dips a finger into his navel, just to hear him squeak. Small victories.
Revenge is sweet until she can feel his stomach growl beneath her hand. “I—Ibara—” Nagisa whispers in warning, groaning slightly. “I can’t—I…"
It takes all the effort Ibara has in her body to not lose her mind when Nagisa lets out a stifled but still loud ‘bhhuuuUUOUUURRPp!’ and then a little cry of relief, trying so hard not to desperately rub her thighs together for any stimulation and going red as a head or two turns to look at the source of the noise; lucky, she’d pulled her hand away from Nagisa as soon as it had happened.
Calm. Collected. No one knows what’s going on. It’s normal and natural. Nagisa is literally just eating. Why is that so hot to her, anyway? It shouldn’t be. There’s nothing sexual about it, at all. But it still makes her head spin. Fucked up.
The movie goes on—Ibara thanks whatever higher power isn’t listening for the fact that Nagisa hadn’t started doing this until it was nearly over. His eating has slowed down a bit, with handfuls of snacks getting smaller and less frequent. It might be her imagination, but she swears she can hear the subtle way his stomach groans and strains, and it’s fucking unfairly hot.
And then mercifully, credits begin to roll.
Conversations amongst Cospro’s idols begin, discussing everything they’d just seen; not that Ibara had been able to pay attention, so she tries her best to stay out of the discussions.
A few people file out of the room, knowing Ibara likely has work; Shu is first to leave, quickly followed by Mika, the twins say a quick goodbye before departing. Crazy:B are the last to leave, joking and laughing with each other as Ibara gives them a subtle stare of death. Nagisa is clutching his stomach now, groaning lightly at the sheer volume of food he’s eaten, and Ibara can’t take it anymore. She needs them gone, now.
Finally, finally, Rinne being the final to exit, Nagisa and Ibara are alone. There’s a less restrained moan from Nagisa beside her, and she looks to see that he’s, honestly, bigger than she’s ever seen. She didn’t know the human stomach could hold that much, and it’s fucking hot. God damn it. What did she ever do to deserve this? She doesn’t even know if it’d have been something good or evil she’s being punished or rewarded for.
They’re in a semi-public place. Sure, it’s Ibara’s movie room, but anyone could just walk in at any time, and that fucking kills her. That someone could know Cospro’s vice president is brought to her knees by her unitmate’s stomach. No one can ever know, and that’s why the thought of someone knowing is so hot, it’s absolutely insane.
She’s quickly and immediately brought out of her thoughts, though, when Nagisa’s stomach gives an ominous growl. She can feel it beneath her hand, and her breathing subtly picks up speed as she shifts her hips for just a bit of stimulation, leaning slightly towards Nagisa’s aching tummy and pressing her cheek against it, shuddering.
“Ibara,” Nagisa breathes. “Ibara, Ibara—”
Only belatedly does Ibara realize that he’s not just calling her name in desire as she rubs and kneads him reverently, picking up on the urgency in his voice and squeezing her thighs together tightly at the realization. “N—Nagi—”
Before she can even finish his name, her hands and cheek can feel the rumble of his stomach before his hands join hers and he lets out the most enormous, disgusting belch Ibara has ever heard in her life, ending with a loud moan of relief. Immediately her vision is going blank and she’s coming hard, shouts muffled against Nagisa’s skin as she presses her face into him, hips stuttering wildly as she rides it out, no thoughts in her mind but burning pleasure.
Her moans as she comes down from her high are shaky and vocal, slowly decreasing in pitch and intensity before she goes boneless, draped uselessly over Nagisa’s swollen stomach. Nagisa gives a less-than-subtle moan too, another little burp escaping him at the pressure. “Ibara… Ohh…”
“F…Fucking…” Ibara pants and tries her best to hiss out a sentence. “Ffffucking asshole, you’re the worst,” she manages. “Y—You knew what you were doing.”
Nagisa smiles sweetly. “…Did I do something to upset you? You’ll have to tell me exactly what it was, then.”
The heat rising to Ibara’s face at the thought of putting into words what just happened is embarrassing.