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Izuku knows that when Shoto gets withdrawn and quiet, lost in his own little world, it’s usually because something triggered him. Many times it’s something small, something that Izuku himself wouldn’t have noticed if not for how hyper-aware he was of his boyfriend’s feelings.
He doesn’t mind that his boyfriend has trauma, no matter how much Shoto seems to insist that he should handle it better, for Izuku’s sake. He tells him that’s complete nonsense anyway, as if Shoto was the only one left with wounds that never quite healed after the war and all they’d been through.
He knows Shoto doesn’t mean it like that, like he’s the only one suffering. He just doesn’t know how to allow himself to not be so put together for everyone around him. Even at home with Izuku, he’s sweet and caring, but composed. There’s only one time that the mask really slips- when the physical overtakes the rational, raw emotion spilling out of him like an icy river, melting down the side of a mountain in spring. The politely composed man disappears, and the hunger and passion inside color his face, burning into beautiful expressions of love.
Izuku is more than happy to indulge his escape from the strict way he carries himself as often as possible. And on days like today, when Shoto is looking particularly closed off, being hard on himself and listening to that voice of self deprecation in his mind, he indulges him a little extra.
“Sho-chan,” he purrs, crossing their cozy living room to kneel in front of his stoic boyfriend as he zones out on the couch. Izuku tucks himself as close as he can between Shoto’s knees and folds his arms across them, resting his right cheek against them while peering up with an adoring expression at his quiet, lonely boyfriend.
“Hm?” Shoto murmurs, not really seeing Izuku, staring off into space as he runs his fingers absentmindedly through the familiar soft, green curls. Izuku sighs into his touch, relishing the sweet affection even as Shoto’s mind is so very far away from his body and what it’s doing.
“You’re so beautiful,” Izuku sighs again, reaching up with one hand to gently trace his cheek with light, crooked fingers. “You’re so perfect for me,” he continues, softly stroking along the cheekbone with his thumb as Shoto flutters his eyes closed. “In every way, you’re perfect. I love you, Sho.”
Shoto gives a quiet exhale, and his face softens, but he doesn’t answer Izuku’s praise. He’s still a little far away, but Izuku knows exactly how to bring him back and remind him of how lovely and wonderful it could feel to be in tune with his body and his emotions.
Izuku’s hand trails down his boyfriend’s soft jaw and down his neck, teasing with feather light touches that almost seem to make Shoto shiver. He continues his soft exploration, gently caressing the feel of Shoto’s toned chest and abs from above his shirt. Shoto cracks his eyes open now to look down at Izuku’s fingers.
“That tickles,” he says plainly, but a soft blush colors his cheeks.
Izuku smiles his best and sweetest flirtatious smile.
“Does it?” He croons, snaking his fingers below the hem of his shirt, lightly dragging his fingernails up and down Shoto’s left side in a teasing manner.
He squirms a bit.
“Yes,” he murmurs again. “What are you doing, Izuku?”
Izuku blinks, big, innocent green eyes back at him.
“I’m admiring the love of my life, obviously,” he replies sweetly. “And his perfect body.” He adds for good measure, grinning. “Aren’t I allowed?”
Shoto swallows and pauses the fingers that he just noticed were stroking Izuku’s curls.
“It’s far from perfect,” he disagrees, glancing away, and Izuku knows he means his scar. He’ll probably always be self conscious of it, but Izuku doesn’t mind reassuring him every single time he mentions it that he is perfect, even with his scar.
“You’re the most beautiful person I’ve ever laid eyes on,” he assures, smiling softly. “Every inch of you is perfect. And I do mean every inch, Sho-chan,” he blinks, innocently, intending to keep a straight face, but unable to hide his grin for very long.
If Shoto was blushing before, he’s really blushing now, avoiding Izuku’s eyes and softly biting the inside of his cheek.
“Sho,” Izuku purrs, climbing up from his kneeling position to straddle his lap, pushing his wide-eyed boyfriend back against their couch with ease.
Shoto blinks rapidly and Izuku feels victory closing in as he becomes more and more flustered.
“Let me show you how pretty and wonderful you are, baby,” Izuku hums, running his fingers through Shoto’s red and white hair, gently tugging his head back, just enough to show he was in control.
Shoto’s left side is a little warm, and it seems he can’t help the soft gasp that escapes his lips at Izuku’s words and actions.
“Won’t you be a good boy for me?” Izuku continues, massaging his scalp with his fingers even as he tugs on his hair. “You’re such a wonderful boyfriend.”
Shoto whines, trying to cover his blushing face with his hands, but Izuku bats them away with a giggle.
“Aww, don’t hide from me, baby,” he gently soothes. “I want to see your pretty face,” he finishes, pressing a soft kiss to Shoto’s lips.
“Izuku,” Shoto pouts, completely flustered as he finally meets his eyes. “Why do you tease me like this?”
Izuku giggles and kisses him more firmly, tugging his bottom lip softly with his teeth before withdrawing.
“Because I love you,” he sighs happily, smiling brightly at him.
“I love you too,” Shoto breathes, arching up beneath him, and Izuku could feel just how much he wanted this now.
“I know you do, you’re so sweet, and so lovely, and so wonderful, Sho-chan,” Izuku praises, rocking his hips into Shoto’s lap and drawing out a low groan from his lips.
Izuku continues to tease him, flushing his pretty cheeks with kind words and rocking his hips shamelessly against him, turning Shoto into a desperately panting mess beneath him.
“‘Zuku,” Shoto whines at last, pushing up his hips. “Please… please let me be good for you,” he begs.
“Aww, I wondered when you’d finally ask,” Izuku grins victoriously, crashing their lips together once more before climbing down (as Shoto groans in complaint) and holding out his hand as an invitation to his panting, flustered, adorable boyfriend.
“Come on baby,” Izuku giggles. “Let’s get you to bed so you can show me just how good you’ll be for me, sweetheart.”
Shoto wastes no time in grabbing Izuku’s outstretched hand, and following him to their room, hand in hand as they always were. Desperately in love with each other.
Izuku’s gentle as he tugs Shoto to the bed, but someone is quite eager now, and he practically jumps up there before he can lead him.
Izuku chuckles and crawls over his body, resting his ass in Shoto’s lap and his hands on either side of his boyfriend’s pretty face, holding himself up from the mattress with his strong arms.
“You seem excited,” Izuku teases, kissing Shoto much more chastely than he really wants to.
“I just want to show you I’m a good boy,” Shoto shoots back, raising an eyebrow flirtatiously. Well, as flirtatiously as Shoto ever got, with his smooth, often impassive face. But Izuku could see him slightly trembling, and feel how hard he was already, so he knew that he was all talk.
“You are the best boy,” Izuku agrees, giving in to his own libido and kissing him passionately.
Shoto groans appreciatively in response, lifting his hands to Izuku’s hips and grinding upwards against him.
“Ahh~” Izuku moans. “Are you that eager to make me feel good, baby? You must really want me to undress you now,” he murmurs into Shoto’s ear.
“Please,” Shoto agrees, nodding quickly and biting his lip.
Izuku giggles and kisses his nose, but he takes mercy on him and reaches down to grab a fistful of Shoto’s t-shirt, pulling him upwards into a sitting position so he can easily take it off.
Shoto follows his lead nearly effortlessly, allowing his shirt to be discarded with practiced ease.
“Mmm,” Izuku hums, pleased with the sight of his really fit boyfriend. Shoto may not have a quirk that relies on physical strength and muscle like One For All, but nevertheless he kept his body in peak performance, and Izuku was very appreciative of those muscles.
Shoto reaches for Izuku’s shirt too, and looks confused when his wrist is grabbed and halted.
“Use your words, baby,” Izuku whispers. “Tell me what you want.”
Shoto groans in slight frustration and pleads with his expression.
“I want all of our clothes off,” he presses.
“Good boys say please,” Izuku replies, amused at his boldness.
“Please,” Shoto adds quickly, amending his mistake.
“Good boy,” Izuku praises, releasing his wrist and giving his boyfriend a sweet kiss, which Shoto seems to really enjoy, pulling him in with needy lips, doing his best to get Izuku’s tongue into his mouth.
It’s obvious how badly he wants this, and that makes Izuku simply drunk with love and affection.
It isn’t long before they’re both naked, kissing passionately as Izuku regains his place above Shoto on the bed.
He runs his fingers through his soft hair, dragging them back and then pulling into a fist right at the roots, tugging in a way that makes Shoto whine desperately, and pull out of the kiss to breathe.
“I-Izuku, please,” he whimpers, the sound going straight to Izuku’s erection with a soft pulse.
“Please what, gorgeous?” Izuku replies in a soft, sing-song fashion. “What do you need from me?”
Shoto whines again and blushes furiously, steam rising from the left side of his face.
“ Please , Izuku, I want to be fucked, please, I’ve been so good,” he begs, biting his lip as he finishes his request.
Izuku groans because Shoto sounds so ridiculously sexy it’s unreal, and says, “Of course baby, you’ve been so good for me.”
He leaves him briefly with a kiss, crawling over the bed to their nightstand and reaching into the drawer blindly, fingers closing around the familiar shape and retrieving the bottle of Shoto’s favorite lube.
As quickly and smoothly as he can, he makes his way back to his boyfriend and sits on his knees between Shoto’s legs.
Gently, he folds them upwards and guides them out to the side, and takes a brief moment to revel in the sight of his insanely attractive, very naked boyfriend, before he opens the cap with a soft click and generously coats his fingers.
Shoto is panting and watching him as if in a trance. He’s working hard to control his quirk, but Izuku sees a few crystals of ice forming on his right hand as he clenches the sheets beneath them and stares at Izuku’s fingers.
Izuku smiles fondly, and reaches down to slick up his entrance, teasing him with a fingertip.
“ Izuku,” Shoto huffs, getting impatient.
“Relax, Sho-chan,” Izuku laughs. “You’ll get your wish. Be good and patient for me.”
Shoto lets out a short sigh of frustration but he acquiesces to Izuku’s demands, because really, he loves this.
Taking mercy on him, Izuku pushes in the first finger and searches for his sweet spot immediately.
“Ohhh, fuck ,” Shoto curses, and it’s delightful to hear him letting loose.
“You like that?” Izuku purrs, crooking his finger and pressing into it again and again.
“Mmm,” is Shoto’s only reply as he arches into Izuku’s touch.
He adds a second, and soon after a third finger, stretching him out and working him loose as Shoto pants and strains for even more pressure, rocking into his hand unabashedly. His hard erection is flushed and leaking, deprived of attention.
When Izuku decided Shoto looks like he’s getting too close, he pulls out and gives him a breather, taking the time to lube himself up.
“I’m ready,” Shoto pants. “Please, Izuku, I need you .”
“And I love you,” Izuku replies breathlessly, lining himself up and slowly sinking into the soft, warm heat of his body.
“Sho-Chan,” he moans. “You feel amazing.”
“Nnnngggg,” Shoto whines, already desperate for movement.
Izuku doesn’t make him wait long.
He pulls almost out and then thrusts forward hard, knowing that Shoto can handle it.
“Oh, fuck!” Shoto cries. “Yes, yes!”
His sinful song fills Izuku’s ears as he pounds into his boyfriend with reckless abandon, all pretense of careful control and teasing lost in the feeling of his tight warmth, pulsing around his dick.
The cries get louder and louder, and Izuku might have worried about the neighbors, but at this point he was getting closer and closer to that sweet release, and couldn’t give a damn about what the neighbors thought of Shoto’s screaming.
Everything crescendos, the sound of his thrusts, Shoto’s wanton cries, and the feeling growing inside Izuku.
Green sparks light across his skin, One For All coming loose as he loses control of his emotions and just feels hot, desperate love for Shoto- the most important person in his life-
And then with a high keening cry, Izuku comes hard into Shoto’s ass, watching as his boyfriend reaches down to stroke himself desperately, once, twice- and then he comes just as hard, spraying up onto Izuku’s chest as his eyes roll back and his hand catches fire.
“Sho!” Izuku says in alarm, “the sheets!”
“Fuck,” Shoto grumbles, closing his fist and putting out the fire with his right hand full of ice. “Sorry.”
Izuku just laughs, gleeful. “Don’t be sorry. Say thank you,” he giggles, leaning down to capture his lips once more.
“Mmm,” Shoto hums happily into his kiss. “Thank you. That’s exactly what I needed.”
“I know,” Izuku grins, kissing his nose affectionately.
He leans back and with only a little regret at the loss of warmth, slowly pulls out of Shoto’s ass, immediately making a mess on the bed.
“We’re gross,” Shoto comments.
“Very,” Izuku agrees cheerfully. “Shower?”
“Definitely.”