nerd bf satoru helping you study with a reward
cw ؛ making you recite what he thought you while he eats you out
“need help with that, ma?” satoru's voice is a sly, teasing lilt, cutting through the quiet of your bedroom, he’s sprawled on the bed, glasses perched low on his nose, a textbook open but ignored, his eyes glinting with mischief as he watches you.
you’re at the desk, brows furrowed, pen between your lips, deeply focused on a calculus problem that’s been kicking your ass for days.
your mouth parts in a small oh, and fuck, you feel a flutter in your stomach at his words, heat creeping up your cheeks.
“satoru, dont—im trying to focus.” you mutter, but you can’t hide the way your thighs press together under the desk.
you’ve been begging him for study help all week—your nerdy boyfriend’s a math genius, after all—but he’s been dodging, claiming he’s “too busy” with his own work.
now, though, he’s clearly in the mood to play, he grins, pushing off the bed to saunter over. “tryin’? looks more like struggling, baby.” he teases, leaning over your shoulder, his breath hot against your ear.
his fingers brush your pen, plucking it from your lips, and he smirks. “c’mon, let your genius boyfriend save the day. what’s got you so worked up?” you huff, embarrassed but desperate.
“it’s this damn integral..” you say, pointing at the scribbled mess on your notebook. “i've been at it for hours.”
“hours?” he raises an eyebrow, sliding into the chair next to you, his knee brushing yours. “and you didn’t call me sooner? thought you were tougher than that.” his hand rests on your thigh. “alright, then, let’s make a deal. i’ll teach you, but you gotta earn it.”
“earn it?” you echo, your stomach flipping again. “satoru, i've been begging you for days!” he laughs, his hand squeezing your thigh. “yeah, and it’s cute, but i'm thinkin’ you need a little… motivation.” he pulls your chair closer, his lips grazing your jaw.
“here’s the deal. i explain this shit, and you repeat it back to me later. every mistake? i’m gonna make you moan it out. sound good?”
your breath hitches, heat pooling between your legs. “sounds like a jerk move.” you mutter, but you’re already nodding, too turned on to argue. “thought so.” he says, smirking, and dives into the problem, his voice clear and confident as he breaks down the integral step-by-step.
he’s good—too good—his explanations making the math click in a way your professor’s never could, you’re scribbling notes, trying to focus, but his hand keeps stroking your thigh, creeping higher, and it’s driving you crazy.
“got it?” he asks after ten minutes, leaning back, his glasses glinting. “or you need me to go slower, baby?”
“i.. think i got it.” you say, voice uncertain, your pen tapping nervously. “but you’re distracting me.”
“me? distracting?” he gasps but his hand slides under your skirt, fingers brushing the damp spot on your panties. “is this how im distracting you, baby?”
“satoru!” you whine, cheeks burning, but your hips shift, chasing his touch, he chuckles, and before you can protest, he’s tugging you out of the chair and onto the bed, your notebook forgotten.
“time to test you, baby.” he says, pushing you onto your back, his body looming over yours. “but first..” he hooks his fingers in your panties, sliding them down, the cool air hitting your slick folds.
you groan, as he spreads your thighs, his lips brushing your inner thigh. “gonna eat you out, ma, but you’re gonna learn what i taught you.”
“satoru, wait—” you start, but his tongue flicks over your clit, and you moan, loud and desperate, your hands flying to his hair.
he groans against you, the vibration making you gasp, his tongue swirling slowly, teasing circles that have your eyes fluttering shut.
“fuck, you taste so good.” he murmurs, voice muffled, his glasses fogging slightly as he dives in deeper, his lips suck gently, then harder, his tongue dragging along your folds, lapping up your slickness.
“but you gotta talk, baby. what’s the first step of that integral?” you whimper, your brain foggy with pleasure. “i—fuck, satoru, i can’t think—”
“wrong answer.” he grunts, his teeth grazing your clit, making you yelp. “try again, or im stoppin’.” his fingers slide to your entrance, one slipping in, stretching you, and you moan louder, hips bucking.
“It’s.. hmp... u-substitution..” you gasp, tugging his hair, and he hums, approving, his tongue flicking faster. “good girl..” he chuckles, adding another finger, pumping slow. “what’s the substitution? c’mon, moan it out.”
“satoru, please..” you whine as his fingers curl, hitting that spot that makes you tremble. “it’s… u equals… fuck… x squared plus one.”
“fuck, yeah,” he groans, his tongue diving deeper, licking a long stripe from your entrance to your clit. “so smart, baby, keep goin’. what’s next?” tou’re panting, tears pricking your eyes as the pleasure builds, his mouth and fingers relentless.
“differentiate...mph... du equals two-x dx,” you moan, your voice loud and needy, echoing in the room. “perfect..” he growls, sucking your clit hard, his fingers thrusting faster. “one more, baby. solve it. tell me the final form.”
“fuck, satoru!” you cry, your body shaking, so close to the edge. “it’s.. one over two.. natural log of.. u... plus c..”
“goddamn, you’re hot when you’re smart.” he mutters, his tongue swirling furiously now, his fingers pounding your pussy, slick sounds filling the air. “cum for me, baby. scream it.”
“satoru!” you wail, your orgasm crashing through you, your walls clenching around his fingers, your moans loud and unbroken as you cum, trembling under his mouth.
he laps you through it, groaning at your taste, his tongue slowing but not stopping until you’re a whimpering mess, he pulls back, lips glistening, glasses slightly askew, and grins, all cocky satisfaction.