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It all starts with a horrendous splitting headache. Itto’s never had a migraine this horrible, huddled up in several blankets, the lights in their room off, and the curtains closed against the bright sunlight. Everything hurts.
He texted Sara, asking her to get some pain medication for him once she got off work. He lays there, staring at the ceiling, auras dancing in his eyes.
He hears Sara’s keys jingling as she unlocks the front door. There’s a loud clunk as she sets her keys down on the counter, and the rustling of a plastic bag. He hears her walking into their bedroom, being careful about letting light into the room.
“I got you some painkillers, are you feeling okay?” She asks, heading over to sit on the bed. She’s holding a glass of water, and an unopened pill bottle.
“I’ve been better,” he admits, sitting up a little bit so he can take the pill bottle and the water from her. She watches as he pokes at the seal, and pours out a dose of medication. Itto washes it all down with the cool water she brought him, before setting the glass down on the bedside table
“Okay, well, I’ll let you rest. I’m gonna make some soup, okay?” She says, pressing a small kiss to his forehead. Itto whimpers, and disappears back under the covers, and he feels the bed shift as Sara gets up. The door clicks shut, and Itto’s eyes slide closed as he drifts off into a dreamless sleep.
***
Sara’s chopping up some green onions, and cubing some tofu she had pressed earlier, while a pot of water simmers on the stove. She knows Itto would appreciate some miso soup, and she’s glad she had started the prep for it before she left for work that morning. She’s stirring in the miso paste when her phone starts ringing.
Sara glances over, and sees it’s a call from Itto’s grandmother. Odd. Usually she calls Itto and not her. She honestly can’t remember the last time she had gotten a call from her.
She picks up, holding the phone to her ear as she watches the pot on the stove.
“Hello, Sara! How are you two doing this evening?” She asks, as Sara stirs the broth.
“I’m doing alright, but Itto’s resting. He’s got a bad migraine, so I’m making some soup for him.” She tells her, putting the tofu into the broth. It slides in with a soft plop, floating to the top.
“Oh, I see. That would explain why I wasn’t able to get ahold of him, then. I was just calling him regarding some family things that he had brought up earlier. If you can, let him know I called. I would appreciate it!” She says, and then the phone call clicks off before Sara can get a word in. She contemplates her words for a few moments as she gets bowls down from the cabinet next to the stove.
The miso soup simmers on the stove for a few minutes, as Sara keeps an eye on it. She puts the seaweed in after a while, and lets it cook down a few more minutes before she turns off the stovetop.
Ladling soup into two bowls, Sara takes the soup to their bedroom. Itto is still curled up in a pile of blankets, snoring. She nudges his shoulder gently, and Itto stirs from his nap, groggy.
“I made you some soup. Miso, your favorite.” She tells him, and Itto sits up. He takes the bowl from her, and samples the soup. He smiles softly, enjoying the flavor. Sara eats a few bites herself, and they sit there, content in silence as they enjoy their soup.
“Thank you, I appreciate it.” Itto tells her, fond smile on his face.
“I thought you would. Also, your grandma called while I was making dinner? She told me she had wanted to talk to you, and had called me because you didn’t pick up your phone.” Sara tells him, and Itto seems to contemplate that for a few moments.
“I see. I think I know what she was wanting to talk about, but I’ll call her in the morning to confirm, because it’s getting late.” Itto tells her, as Sara takes another mouthful of soup, the tofu melting in her mouth.
“What do you think she was wanting to talk to you about?” Sara asks, shifting a little closer to Itto. She swears she sees something odd in his hair. SHe blinks, and whatever it is is gone. She must be seeing things. It’s been a long day.
“I think it was something to do with a family thing? I know my grandpa’s birthday is coming up soon. Hopefully it’s nothing too major that I missed!” Itto says, looking down into his soup, a little dejected looking, like he was genuinely upset at missing her call. Knowing Itto, he definitely would be sad if he got to miss out on party planning.
“Well, I’ll let you know if she calls back, okay?” Sara says, reassuring him.
“Thanks, babe. You’re the best, you know?” He tells her, and Sara blushes. She looks down into her soup, avoiding looking at him because even after being together for over a year, she’s still not good at taking compliments from Itto.
“I try my best.”
***
The next morning Sara wakes up to a bloodcurdling scream. She bolts up in bed, and looks over to see Itto’s side empty. The bed is still warm when she touches it, but Itto is gone. The bathroom light is on though.
Sara creeps through the bedroom, clutching her phone, and sees Itto in the bathroom, only he looks a little different?
He turns to face her, and Sara sees the change first hand. Sara gasps at the sight.
Itto’s grown in height, now towering much higher above her. In his hair sprouts two bright red horns, and there are red marks running down his face. His nails are claws, and his ears are pointed now. She understands the screaming now.
“Sara, call my grandma, please?” He asks, voice shaking. Sara reaches out for his hand, which dwarfs her own, holding it as she clicks on Itto’s grandmother’s contact. The phone rings once, twice, thrice, before she finally picks up.
“Good morning, Sara! How has your morning been?” She asks, voice chipper. Itto takes the phone from Sara, pressing it to his ear.
“Hi, grandma, it’s Itto. I think we might have a situation on our hands.” He says, and Sara notices his voice has changed as well, cracking a little in distress.
She stands next to him, holding his hand as he explains what’s going on. Sara can’t hear much on her end, but she hears Itto’s half of the conversation. Itto sounds very uncomfortable for most of the conversation, his face flushed from embarrassment.
Essentially, it boils down to a few things. Itto’s family are descendents of red oni, Itto’s a late bloomer, and that Sara is going to have to help him out. Itto blanches at that last part, and looks concerned.
“She’s my girlfriend! I don’t want to hurt her! Are you sure I can’t just go hide in the woods for a few days until I’m back to mostly normal?” Itto asks, running his hand through his hair. By this point, Sara’s back in their bedroom, laying in bed, looking up at the ceiling.
Itto talks to his grandmother for a few more minutes, before ending the call. He heads back to their bedroom, and collapses on the bed.
“She said that there might be some interesting changes in activity.” Itto tells Sara, looking up from the pillow he’s smushed his face in.
“What kind of changes in activity?” Sara asks, setting her phone on the nightstand. From what she heard on Itto’s end, it sounds like it’s not family friendly in the least.
“More sex, i think? I really didn’t understand a lot. Something about this whole oni transformation sends my libido into overdrive. I think that was the most awkward conversation I’ve ever had with my grandmother.” Itto admits, blushing.
“I understand. Did she say when you might start seeing that spike happen?” Sara asks, making a mental list of things to get if she has a few hours to prepare.
“Yeah, in a few hours. So, if you wanna be prepared, I’d recommend going ahead and getting stuff now. Once we get started, I don’t think we’ll be able to stop for a while.” Itto explains, and Sara nods.
“Okay, well, I’ll be back in a few then. Can you handle being left alone without me for a little bit?” She teases, and Itto flushes bright red.
“I think I can. See you soon.” He says, leaning over to kiss her sweetly, if a bit restrained. Sara contemplates that as she walks out the door, keys jingling in her hand.
***
Sara comes back to their apartment with a small bag full of snacks, condoms, and a few other items. Itto’s sitting on the couch, glancing over at the bag on the counter. He gets up, and starts investigating the contents.
“No snacks with beans?” He asks, and Sara nods, showing him the bean free selection of snacks she grabbed. He examines the rest of her purchases as Sara starts to do inventory of the snacks.
He picks up the container of lube, and looks it over. Sara had grabbed some because she wasn’t sure if Itto’s cock had changed size with the transformation and she wanted to be prepared.
“You feeling okay so far?” Sara asks, as Itto puts down the lube. He shrugs.
“I mean, I still feel mostly normal, just tired. Why did you grab lube?” He asks, and now it’s Sara’s turn to get flustered.
“I just thought, well, um, I’m not sure if certain anatomy changed when you changed, you know?” She admits, and avoids looking at Itto.
“Hmm. I hadn’t even thought about that. Wanna look and see?” He suggests, wiggling his eyebrow. Sara’s face heats up, and Itto grins at her, like the absolute menace he is. She sighs. She’s not sure what to do, if she’s being honest.
“I’m nervous,” She admits, and Itto makes his way over to her. He runs a hand down her back, smoothing over her shirt.
“You don’t have to do this, you know. I’m sure I can just use my hand and be done with it. I don’t want to hurt you.” Itto tells her, reassuring her. Sara leans into him, resting her head on his chest.
“I know, but it’s not that. I just worry, you know.” She tells him, and Itto nods. He’s well aware at this point. Sara’s anxiety is something they’ve both gotten adjusted to since they’ve started dating.
“Yeah, but it’ll be okay. Trust me.” He tells her, leaning down to kiss her. His mouth is warm against hers, and when she pulls away from the kiss, she sees something in Itto’s expression change.
“Itto?” She asks, and he seems to be out of it for a few moments before coming back to reality.
“I think it’s starting.” He tells her, and she’s immediately pulled into a ravenous kiss. Itto kisses her rough, his mouth bruising, his hands holding her hips tightly. He bites her lip, and Sara hisses in pain as his new fangs dig in. He breaks the kiss for a moment, and wipes away the blood on her mouth with his thumb, bringing his thumb to his mouth and licking it off a few moments later.
“Careful.” Sara warns, and Itto leans in, kissing her again. His tongue slips into her mouth, and Sara sighs into the kiss, holding onto his shoulders.
Itto shifts against her, and Sara can feel his erection pressing into her. Suddenly, Itto breaks the kiss and flips her so that she’s facing the kitchen, pressed against the countertop.
Itto is mouthing at her neck, biting at the exposed skin. Sara whimpers as he leaves a hickey on her neck, before pulling her shorts and panties down. His teeth are sharp, and they scrape against the sensitive skin on her neck, creating the start of more marks.
“You smell good.” He murmurs into her neck, holding her hips tight enough to bruise. Sara shivers, despite the heat between the two of them, feeling Itto rut against her, still wearing his sweats.
“Are you going to…” She starts, trailing off as Itto lets go of her hips. He pulls down his sweats, his cock out, leaking against her thigh. She hears the pop of the cap of lube, and Itto pauses for a moment, to slick himself up so he doesn’t hurt her.
“Ready?” He asks, and Sara looks back at him. Itto’s eyes are wild, locking onto hers. She nods, and Itto lines himself up with her entrance.
He eases in, trying to be as gentle as he can, despite all the urges to do the opposite. Sara groans at the feeling. She was right, he’s much bigger than usual. He starts to thrust, going slow.
Sara moans as he begins to pick up the pace, his hands digging into her hips as he thrusts harder. He’s groaning, and has Sara practically bent over the countertop at this point, as Itto fucks her hard.
She can’t help the moans as he really goes for it, slamming into her with a lot of force. His nails dig into her hips, and she knows there’ll be bruises there once they’re done. She’s shocked that he doesn’t draw blood with the force of his grip.
He thrusts hard, skin slapping against skin as he fucks into Sara hard. She whimpers, grabbing onto the counter, her feet slipping on the cold tile. Itto bites at the back of her neck, teeth sharp against her skin. Sara winces, as Itto continues to thrust, cock deep inside her, pushing against her cervix over and over again.
He gets in a few more rough thrusts, and comes with a grunt. He rocks into her a few more times, before pulling out, finally. Sara’s still bent over the countertop, legs shaking as come drips down her thighs.
“Fuck.” She groans, muffled slightly by the countertop. Itto catches his breath, rubbing a hand down her back.
“Are you okay?” He asks, as Sara finally sits up.
“I think so, but I’m not sure you are.” She says, gesturing towards his still erect dick. She finally gets a good look at what she’s dealing with now.
Itto’s got a big dick anyways, but the girth and length has increased by a lot. The red marks on his body are on his dick too, and she can see it’s gained some fleshy bumps. She supposes it’s ridged for her comfort.
“Oh fuck.”
***
Itto fucks her like it’s all he knows how to do, still hard after several rounds of sex. He’s always had good stamina, but the Oni side of him is on full display here, still hard even after four orgasms (she kept count).
“Another?” She asks, as Itto pushes her down onto the couch. He licks into her mouth instead of answering, pushing her legs up against her chest.
Sara’s legs dangle over his shoulders as he grips the base of his dick to thrust back into her. Sara moans at the feeling, his dick curving deeper inside. It feels so good, the ridges of his cock rubbing against certain spots inside her. Itto groans, thrusting roughly.
Sara feels like her whole body is on fire, as he continues to move inside her, and Sara moans as his dick thrusts against a sensitive spot deep inside her. She tugs on his hair, hands brushing against the red horns on top of his head, and Itto whimpers. Sara notes that for later. She bets that they’re sensitive. He continues to thrust into her, his pace speeding up a little bit, encouraged by her moans and whimpers.
“Mine.” He growls, breath warm against the shell of her ear. Sara feels her heart skip a beat, as Itto fucks her roughly. He’s deep inside her, pressing against her cervix again. She’s bent in half, and she can’t help but claw into Itto’s back with her nails.
Itto whines, biting her shoulder, keeping her pinned between him and the couch. Sara nearly screams as Itto thrusts harder and harder, practically feral. He bites and sucks at her skin, leaving bruises, reminders that she’s his.
“Come for me, baby.” She whispers in his ear, and savors the whines that he makes. Itto’s gorgeous like this, all his pent up energy being released, railing Sara like it’s the only thing he knows how to do.
Itto continues to thrust, his pace losing all rhythm. He’s close, and Sara holds on, leaving more marks on his back. Itto finally comes with a loud moan, spilling inside Sara once again. She lays there as Itto pulls out, come leaking out of her. The animalistic glint in Itto’s eyes finally fades, as he looks at her.
Itto’s cock is beginning to soften, and they realize that Itto is through the roughest part of the whole oni thing. He kisses her gently, before picking up Sara.
“You’ve done so well, let me make it up to you.” He tells her, as Sara clings to him. He presses gentle kisses to her neck as he carries her to their bedroom.
***
Sara finds herself on the bed, hands holding on tight to Itto’s horns like handles. He grips her thighs as he goes down on her. Flicking his tongue across her clit, Sara whines at the sensation.
Itto takes his time, teasing her as he moves his tongue away, slipping it down between her folds, laping at her labia. Sara whimpers as he takes his time, taking her apart slowly. He slips his tongue inside her and she lets out a quiet moan.
“Fuck!” Sara cries out as Itto returns to teasing her clit with his tongue. He continues to mouth at it, and Sara moans louder, feeling the heat in her stomach grow. Her toes curl at the sensation, tugging hard on his horns.
Itto slips a finger inside her, curling upwards, and Sara’s back arches off the mattress. Her moans increase in volume as Itto continues to finger her, creating a rhythm between his mouth and his hand.
Sara pulls hard on his horns, as more sounds of pleasure spill from her lips. Itto continues to sloppily eat her out, using his mouth to bring her closer and closer.
“Itto…” she whispers, and Itto pulls his mouth away for a moment, looking up at her. Sara whimpers at the loss of his mouth.
“You getting close?” He asks, and Sara nods, pushing at his head to get him to go back to what he was doing. Itto laughs, and returns to his position between her legs, making sure that Sara gets the best orgasm of her life.
Sara feels the heat in her stomach increase as Itto does his absolute best. Sara holds on tight for dear life as Itto takes her apart with his mouth and fingers, teasing her clit and fingering her deep. He curls his fingers inside of her, brushing against a sensitive spot inside her. His fingers are huge, filling her (but not as much as his dick did earlier). It feels incredible.
It takes a few more minutes, as Sara feels her orgasm begin to hit her like a large, crashing wave. It comes over her, as Itto curls his fingers inside of her, Sara’s back arching further off the bed, toes curling. She comes with a shout, hands tugging hard on Itto’s hair.
Sara lays there, seeing stars, her clit throbbing as Itto finally removes his mouth from her, fingers sliding out as well. He leaves gentle kisses on her thighs, as Sara trembles from the force of her orgasm.
Sara looks down at Itto, his mouth and chin glistening and she feels her heart skip a beat. Itto gives her the goofiest smile and Sara can’t help but cover her face, not able to meet his eyes. Itto moves her hand, coming up to kiss her sweetly.
Sara can taste herself on his tongue and she kisses him back, mouth moving against his. She’s really glad that they finally got the whole oni thing taken care of, and Sara missed the sweet and gentle side of Itto. She missed her idiot.
“How’re you feeling?” He asks, breaking the kiss after a few moments.
“Sore,” Sara admits, and Itto looks away sheepishly. He looks like a kicked puppy, guilty expression on his face.
“Sorry about that.” He apologizes, and holds her close, rolling them over onto their sides, spooning her. Sara lays there in his arms, feeling the warmth of his strong embrace. She’s exhausted from all of this, and is glad that they can finally rest.
She’s close to falling asleep when Itto shifts, jostling her a little bit.
“What is it?” She murmurs sleepily. Itto adjusts, sitting up to grab a blanket.
“I thought you might be cold.” He tells her, pulling the blanket over the both of them. She snuggles into it, turning around in Itto’s arms. He holds her tight against his chest, and Sara rests his head against him, comfortable.
“S’okay. Love you.” She whispers into his chest, snuggled against him.
“Love you too. Sleep tight, Sara.” He tells her softly, running a hand through her hair. She falls asleep in his arms, warm and safe.