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You had all just finished a mission, a squad of decent level demons causing anyone on woodland paths at night in a specific area to vanish. As a reward for a job well done and the lack of injuries, it was decided you'd all take a small trek to the nearby town and treat yourselves to a small night of relaxing and good food.
The entire time you walked you had yourself wrapped around Genya, as was standard with you two after battles. As you walked through the semi-crowded streets Genya lifted up your hand he had a hold of and kissed it repeatedly, causing you to giggle at his behavior and tippy-toe yourself to kiss his cheek. You grinned even more when he flushed pink at the attention, both of you drowning out the groans and side-eyes from Zenitsu and Inosuke. It was like you two were in a little bubble of your own world, where nothing else besides the other mattered.
Five people (six counting Nezuko in her box) walking through the streets of a small town with swords on their hips, one wearing a literal boar head, was a spectacle on its own. It was only increased ten-fold when two of the five were sticking to each other like glue and making heart eye to one another.
You pointed at something random, Genya's head turning to follow your finger. You quickly grabbed his shirt, leaned up, pulled him down, and barraged his face in kisses. His cheeks, forehead, jawline, you payed special attention to his scar before quickly planting two on the corners of his lips. You could hear Tanjiro's small chuckle along with the other two's exasperated groaning, but seeing your big tough Demon Slayer turn red enough to become a tomato was well worth their small scorns.
Genya blinked, looking at you as his brain slowly registered what just happened. He shook his head slightly, fluffy mane of a mohawk shuffling behind him as he stared at you with the most smitten look possible. Before you could turn he leaned down, kissing you on the lips for a second before pulling away flustered. At that Inosuke cheered, fists pumped in the air as he celebrated his easily flustered friend kissing his girlfriend properly. Genya just looked away as you grinned, staring at him with lovesick eyes.
Genya whipped his head around as a small gasp left your lips, letting out a small "woah" as you suddenly yanked him towards a stand. You bounced up and down on your feet as you happily talked to the stand owner. The elderly lady looked between you and Genya for a moment, eyeing his large, muscular form and the scar on his face. She stopped when you pointed at a certain sweet, noticing the scar upon your left arm and the sword on your hip, as well as the lovesick look Genya gave you the entire time. You had decided upon a decent amount of mochis, dangos, and daifuku. The woman collected them in a cute little paper bag for you.
"Genya, love, do you want anything?" You chirped, turning to him.
"Oh! Um, can I have some ohagi, miss?" He said, gently pointing a finger towards some of his favorite treats.
The old lady giggled to herself, "My, what a kind young man you are!"
You puppy-eyed Genya, smiling, as he replied a "thank you".
The two of you picked up your bag of respective treats, turning back to your friends who had acquired their own snacks, Tanjiro picking some specialty tempura, Zenitsu chose various onigiri, and Inosuke a small variety of jerkies. You stuck a dango stick in your mouth, practically skipping as you held your boyfriend's hand. He himself had picked one of the ohagi and popped it into his mouth, humming as he chewed.
"Okay, okay, we all got our snacks, now what do we want for a proper meal?" Tanjiro asked to you all, looking around for non-snack stand.
"MEAT!" Was all Inosuke stated, fists in the air as he yelled.
"As long as it's somewhere we can sit down..." Was Zenitsu's response
Genya said nothing, instead turning to look at you, head cocking in curiosity.
"Hmm, somewhere with noodles? It's been too long since I've had any good udon or ramen." You said between bites of dango.
The others nodded, now on the hunt for anywhere selling noodles, but with Tanjiro's sense of smell the hunt didn't last very long. There were general cheers as you all semi-rushed the noodle shop. Per usual, the workers had slight shocked faces at the group before them before quickly working on orders. Inosuke, of course, ordering as much meat as possible.
Dragging your boyfriend to a plush bench you both sat down, your ankles tangling together as you leaned against each other. Neither of you thought anything of it when Inosuke handed you your food. You both slurped the noodles, occasionally being cheesey and feeding the other little bits from your own bowls. As you finished your food off you both simply brushed off the warmth you felt on the heat from the broth. Why would it be anything else?
Upon paying you all left, heading to the house you were designated to stay at, unfortunately, not a Wisteria House, but better than nothing or a cheap inn. As you all walked, the other three chattering away, you and Genya leaned on each other, brushing off the sudden heat you both felt, the flushing of your skin.
You shook your head slightly, but your eyes kept falling back into staring at your boyfriend. His lips, his neck, his strong arms and thick fingers, how you knew underneath those clothes were rippling muscles, the ever-present slight bulge in his pants. Yet you shook your head, trying to clear away any thoughts because of the.... predicament you were both in when it came to being more intimate. How Genya would become so flustered his brain would shut down, how you couldn't do anything without guidance, and the mutual embarrassment present from being so open. The farthest you had ever gotten was him shirtless, grinding against your clothed pussy while he kissed you
He could barely grab at you through your clothes without shutting down from how overheated he'd become, flustered so much he stopped being able to function, much less actually fucking.
The further you walked the more flustered you became, occasionally tripping over your own feet due to the throbbing of your slick-soaked pussy. You were so focused on trying to not be obvious and act normal you didn't even notice your boyfriend in a similar state. If I can scream at Sanemi for him, I can act normal and not make him feel obligated, just a bit more.
"House in sight!" Was Inosuke's screech before running off at max speed to your temporary abode.
The rest of you came in behind him, Tanjiro quick to start a fire and light the small lanterns throughout the house. You quickly stashed away the snack bags you had, shuffling in place and fidgeting.
"Haha! The mighty Inosuke has an idea!" He barely paused for heads to turn in his direction, "Gonpachiro, Monitsu, you're coming with me!"
"THAT'S NOT MY NAME!"
"What about (Y/N) and Genya?" Tanjiro, always the considerate one, chirped.
"That does not matter, now come on! Your god demands it!" Before Tanjiro or Zenitsu could say anything against, they were dragged outside.
You could hear Inosuke's whooping, angry garbling from Zenitsu, and then sounds of their footsteps rapidly moving away from the house. You were confused, and then it clicked. Inosuke giving you the food, the warmth in your skin, the fact he just dragged everyone else out of the house and left you alone with Genya. Genya turned to you at the same time you turned to him, his skin flushed just as much if not more then yours.
"He-" You started.
"He fucking drugged us." Genya finished your thought for you.
"When he gave us our food he must have put something in. Fuck, what is it?" You muttered, twitching and fidgeting as you stood.
"Aphrodisiacs. He put fucking aphrodisiacs in our goddamn food."
You took notice of how fast Genya was breathing, his hands digging into his thighs as he didn't look in your direction. It was a mental war, was it okay to do anything while your boyfriend was drugged, but you're drugged too, so what do you do?
"(Y/N)" was all you heard before lips were crashing into yours. You groaned instantly, lips parting and letting Genya push his tongue into your mouth. Your hands tangled into his fluffy mohawk, pulling him closer. He growled, a deep sound that vibrated his chest, as he leaned down to grab you by the ass, causing you to gasp into his mouth.
The two of you shuffled into one of the rooms, somehow finding the door between your fervid kisses and touches.
"Fuck, Genya." You didn't mean for his name to come out as a moan, but fuck.
You whined when he pulled away, but stepped back yourself. When you looked up you could see how wide his pupils were, and then took notice of how deeply he was breathing through his nose. You almost wanted to ask but when his eyes went from your face to between your legs you realize. Once he started eating demons it made his senses spike, not nearly as well as Tanjiro or Zenitsu, but much better than the average person. He was smelling you. He dug his nails into his palms as you licked your lips. He growled, flat out drooling, as he suddenly dropped to his knees in front of you.
"G-Genya? Ah!" You were cut off as he buried his face into your thighs.
He pulled back, tugging off and throwing every article of clothing that got in his way. With alarming speed you were now mostly naked in front him. You yelped when he ripped off your underwear and the bandages holding your tits in place. He looked up at you, drooling, flushed, and looking like a mess, but he waited until you gave that final nod before burying his face into you. The sound you made as he tossed one of your legs over his shoulders, delving tongue first into your pussy was sinful. You gripped his mohawk, gasping and whining as his tongue lapped against your clit before devouring the slick coming from your hole. He lapped circles around your entrance, noisily sucking up as much of your juices as he could. You complied when he pulled your other leg across his shoulder, now borderline helpless to whatever he wanted to do with you. You looked down and your heart thumped, he was staring up at you with the most lovesick eyes you had ever seen, for a second you even forgot what was going on, your hand petting the side of his face.
He leaned into your touch, faintly smiling as he continued to lap and suck at you.
"Genya, baby, I want you in me." You said, smoothing out his unruly hair.
He pulled away, licking at the slick that stuck to his lips. "Are you sure?" He looked so genuinely concerned, head still pushing into your hands.
"Genya, my love, my baby boy, sweetest man alive that can touch me, yes." You giggled as he still somehow found a way to get flustered at the praise you were giving him
"C'mon." You got your legs back under you, doing your best to pull him up.
"But first, shirt off?" You asked, slightly puppy eyeing him.
He moved without hesitation, yanking his shirt off and throwing it. You eyed his toned stomach and chest, coming close to gently trail a finger against some scars lying on his perfect skin. He shuddered underneath your touch, muscles flexing against your fingers. Your hands lowered, coming to rest upon the top of his pants, when he nodded you slowly pulled them down, borderline drooling at the bulge that became even more visible. He stepped out of his pants, officially leaving him in nothing but underwear for a split second before he had a rush of bravery and pulled those down as well. You couldn't help but stare. He was so fucking big, and now all you wanted was him in you.
He made a confused sound when you turned and walked away from him, but stiffened when you laid down on one of the futons, spreading your legs for him.
"Genya, please" was all you need to say before he was rushing to you.
He clambered between your legs, staring down at soaked folds and slick covered thighs, gulping. You watched as he spit into his hand, slathering his saliva across his thick cock. He shuffled on his knees, dick resting on top of what he wanted to be in so badly. You could feel the fire in your body again, and when you looked it him he understood exactly what you wanted.
He leaned over your body, kissing you deeply as he writhed between your thighs, pulling back with a mantra of "I love you" leaving his lips. He gripped his cock, lining the thick tip up with your entrance. When he started pushing in you saw stars, body tensing and twitching as you both moaned so loudly the gods could hear the sounds. The more he pushed in the more it felt like you were going to die from pleasure, tears welling up in your eyes, but Genya was in the same boat, shuddering and panting desperately.
You didn't even notice you had started squeezing his waist between your thighs until he gently peeled your legs off of him.
"You.. you feel so good," was what he shuddered out, gently squeezing your thighs. "C-can I move? Please?"
When you nodded he groaned in appreciation, slowly pulling himself back and then rocking into you again. He took his time at first, moving lowly and gently, not wanting to hurt you, but when your pussy suddenly squeezed around him something snapped. He leaned down, peppering your face in kisses, muttering about how much he loved you, before he proceeded to slam into you. You gasped, choking on air as he started pistoning his hips as hard and fast as possible. The pleasure-induced tears were free falling now, thighs wrapping around him again. Genya was crying as well, the feeling of you around him mixed with the adoration he felt for you was overwhelming.
"I love you, I love you, love you love you love you-" Mixing with his moans was all that left his lips as he fucked you like his life depended on it.
His hips slapped against you, creating the unmistakable sound of skin against skin, his thick cock hitting everywhere that felt amazing. You felt like a mess, drooling and crying for your boyfriend and his dick. You reached up to his head, pulling him to you by his hair to desperately kiss him, moaning into his mouth. When he reached down to thumb at your clit your soul ascended, entire body trembling as you wailed against him. It didn't take much longer for you to cum, gripping his cock like a vice and almost screaming in pleasure. He gasped as you tightened around him, your cum staining your thighs and his pelvis.
The growl that ran through him made you shudder. He pulled away from your lips, suddenly sinking his teeth into your neck with a snarl that made you yelp in surprise. The yelp quickly turned into whining moans as he fucked into you as hard as physical possible.
"Inside, please, please, let me fill you up." He gasped against your neck, kissing at the bite
"Do it, please Genya," was all you needed to say.
He bit you again, firmly sinking his teeth into you as his hips stuttered. He groaned deeply as he came in you, filling you up. You whined, clawing his back and digging your heels into his the bones of his ass. He fucked through his orgasm, pushing his cum even deeper into you until his hips faltered to a stopping point.
The two of you basked in the after glow, floating from your orgasms, wrapped up in each other.
"I love you so fucking much."
"I do too."
He slowly pulled out, dick covered in both of your releases. He stared down at your pussy, slowly licking his lips again.
"Demon boy, keep your tongue away from there!" You barked at him, still overwhelmed from your release.
He chuckled, simply moving up beside you, pulling you onto his toned chest. You hummed as he nuzzled the top of your head. He leaned down and kissed you, much more gently than while you were fucking.
"I'm still gonna kick Inosuke's ass, okay?" He muttered against you.
"Oh I'll hold him down for you if you want." You grinned as he laughed at the statement.
Cuddled up against each other, you both gently drifted off to sleep, uncaring of anything else except each other.