"Gifted" 💚 | Sweet & Spicy Birthday Collab w/ SapphireTwilight

Happy Birthday to our favorite crybaby hero Izuku Midoriya! 💚

You picked the sweet gift from Sapphire and the spicy one from me in our polls and here's the result! Hope you enjoy both our birthday pieces for Izuku and please make sure to support Sapphire's amazing work on her Patreon too – she deserves all the love!! 🥹🫶🏻

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The Gift of Passion

by SapphireTwilight

Izuku never thought he’d get to live his dream. After losing One For All, it took him some time to find his footing again. Being cut off from something that brought him such joy had been difficult to accept. If not for the never-ending support of his friends and family, Izuku might not have been able to look back at the time so fondly. By the time All Might presented the suit Katsuki and the other made for him, Izuku had mourned his loss, and started a teaching career he enjoyed.

Now, two years after having his dream returned to him, Izuku couldn’t imagine his life any other way. He got to work as a teacher who helped the heroes of the future, while also jumping through the city and fighting villains. But maybe the biggest wish was one he’d only thought of when blowing out candles or seeing shooting stars. The deep desire to reach out for Katsuki’s hand, and have his favorite person link their fingers with a smile just for him.

Of course, a month after getting the new suit, Katsuki did what he always did; blasted all of Izuku’s expectations out of the water. All it took was one hand over his hip, a gentle call of his name, and hot lips against his to show Izuku just how perfect life could be. That kiss was the first of thousands over the next two years, each one making Izuku’s heart swell and his mouth tingle. Their relationship had its swerves and bumps, but it was theirs. And Izuku knew his happiness was safe in Katsuki’s strong hands. 

So when Kota stepped in front of his desk after school, sharp eyes and little frown a reminder of his boyfriend, Izuku didn’t expect the gruff question. “What is the substitute gonna make us do tomorrow?”

“Eh?” Izuku blinked, unsure why the student thought he’d be out of class the following day. He wasn’t feeling under the weather, and there was no request for his assistance patrolling. Trying to figure out where the train of thought came from, Izuku offered Kota a sheepish smile. “Where am I supposed to be going tomorrow?”

“How would I know? I’m not Dynamight.” Kota’s comment only confused him more. Something on his face must have given him away, because the third year huffed and crossed his arms. “Don’t married people do special things for their birthday?”

“Married? Birth—oh!” Izuku turned his wristwatch, checking the date before he let out a sheepish laugh. “I didn’t realize it was tomorrow.”

“How’d you forget your own birthday?!” 

“Ah, well, when you’re older, you have a lot of responsibilities. Some things get lost in the shuffle.” Izuku looked up, shrugging at Kota’s disbelieving nose scrunch. “Besides, I have to teach and Kacchan’s in charge of an agency. We can’t take the entire day off without a valid reason.”

“If he was a good partner, he’d be the one asking you this, not me,” Kota grumbled, Izuku smiling at his student’s pout. “If he can’t even make your birthday special, what’s the point of being together?”

“Because we love each other,” Izuku answered, still feeling a hint of heat in his cheeks despite the two exchanging the words a year ago. “But as adults, it’s not that simple. Kacchan is a hero; the world won’t stop needing him just because it’s my birthday.”

But Kota wasn’t sold. “Dynamight’s world should. He’s supposed to celebrate the special moments with you. And your birthdays should be the most important, cause it’s the day fate gave him the best gift of his life.”

“Kota.” He laughed at the black-and-white thinking, finding more similarities with the angry teenager his boyfriend used to be. “You’ve got a very romantic heart. I think whoever gets your love will be very lucky. Which reminds me… are you going to Eri’s performance next week?”

“Wh-why wouldn’t I? She’s my friend. Just my friend.” The abrupt change of Kota’s cheeks from pale to flushed happened faster than Izuku could blink, meaning he missed his student slamming something down on his desk before spinning around. “Whatever, I’m going home.”

“Be safe!” Izuku called out cheerfully, waiting until his embarrassed student left the room to look down at what he left behind. “Oh. How cute.”

The simple gift shouldn’t have made his heart soften so much, but Izuku was always a sentimental person. Seeing All Might, Katsuki, and himself in sticker form made him smile while he packed his things and started on his walk home. The little poses and detail to their suits proved whoever made them were fans, despite Izuku’s decreased shifts and All Might’s retirement. To see himself by his two favorite heroes made the child inside of him cheer, safely tucking the sticker book in his pocket before a giggle caught his attention.

There, on the opposite side of the street, was a couple sitting on a park bench. They must have been teenagers, the girl sitting on the guy’s lap with her arms wrapped around his neck. The way they looked at each other, like there was nobody else in their world, screamed of the passionate fire of a new romance. Even his gentle hold on her hip, keeping her steady on his lap as they spoke, twitched like it wasn’t something he was used to. 

Kacchan used to get that twitch when we held hands, Izuku thought, his smile soft while he turned away and continued on his path home. 

When he and Katsuki finally confessed, the outburst of their overflowing passion had burned Izuku’s cheeks in embarrassment. Despite his shame, anytime Katsuki grabbed him close and dragged him to slide their lips together, he never refused. He couldn’t pretend he’d never done the same, needing to taste the sweet mouth of the man he still struggled to accept was his. They got in trouble several times for their moments of intimacy when caught. Izuku’s classroom,  alleyways during patrol, or even times when they went out with their friends were not off limits. The first few months of their relationship were reckless, embarrassing, but full of laughs and pleasure he couldn’t imagine sharing with anyone but Katsuki. And, despite their friends and family complaining about their open affection, everyone said the same thing; Katsuki and Izuku would never fall out of love. 

Shoto, of all people, explained their reasoning best. “Why? Because your passion for Bakugo, and his in return for you, has always been a part of who you are. Nobody else would understand your love better.”

But after dating for two years, moving in together about two months before Izuku’s birthday, things were settled between them. The sex was still great, and Izuku loved the gentle eye-rolls and hips squeezes when Katsuki slipped behind Izuku in the bathroom to get something. He loved Katsuki even more now that he’d seen him half-asleep and flipping pancakes in just sweatpants and fuzzy morning hair. There was nothing more soothing than Katsuki rubbing his back when Izuku had caught the flu, exchanging forehead kisses and cuddles for feeding him medicine and making homemade soup. Izuku looked forward to coming home and flopping onto the couch, watching the news while Katsuki stroked his hair. Their love wasn’t the raging fire that burned down buildings. Over the years, it had sunk into something warm. Comfortable. Genuine.

Still, thinking over Kota’s words, he had to wonder; did the lack of heat mean they’d grown… complacent?

Did Katsuki also forget my birthday? Izuku’s lips tugged into a frown before his phone vibrated, pulling it out of his pocket to check the notification. His eyes moved from the spam mail, swiping it away to look at his background. It was from a hike with Katsuki and All Might, a hobby they tried to do every few months. In the picture taken by their mentor, Izuku had kissed Katsuki’s cheek over his scar, causing his boyfriend to grin without caring how ‘stupid’ he looked. It’d been eight months since they’d taken the picture, and life had made it impossible for them to go back since. 

“Have we gotten too busy for each other?” Izuku asked the screen, a bubble of discomfort filling his stomach. “Has… has Kacchan gotten bored?”

As soon as the question left his lips, Izuku shook his head. If Katsuki’s feelings had changed, he wouldn’t have stayed with Izuku. At the very least, their communication skills had gotten strong enough to talk about serious things without assuming everything was broken or ruined between them. Katsuki loved him, told him every day without fail. And even if Katsuki still had habits that needed some care, telling the truth wasn’t one of them. They wanted to chase each other forever, and even if their sprint had trickled into a simple stroll, Izuku didn’t mind. 

He’d follow Katsuki anywhere. A missed birthday didn’t change that.

The moment of insecurity was completely forgotten when Izuku woke up to warm kisses pressed to his cheek and forehead the next morning. Humming in the strong embrace of his boyfriend, Izuku pretended to be asleep for a couple of seconds (despite both knowing he was awake) to enjoy the pampering. Finally, when one kiss and hot breath ticked the sensitive skin of his earlobe, Izuku pulled away, opened his heavy lashes to look up at the man leaning over him. Sunshine poured into their bedroom window, giving Katsuki a beautiful glow. His red eyes glimmered while staring down at him, Izuku breathless from how gorgeous his boyfriend was.

“Good morning,” he whispered, Katsuki humming before finally placing a kiss over Izuku’s waiting mouth. Melting into the soft affection, he waited until Katsuki pulled away to ask his question. “Why am I getting such a nice wake up?”

“Cause it’s against the law to abuse the elderly, and you’re an old man now,” Katsuki said, grinning while he bumped their foreheads. “Happy birthday, Nerd.”

“Thank you.” Nuzzling their noses together, Izuku smiled. “Also, you’re three months older than me. So if I’m old, you must be—Ah! Kacchan, please!”

Despite Katsuki trying to smother him under their pillow, Izuku burst out into laughter, playful in his hits against the man who felt like he was made of steel. The ‘fight’ barely lasted a minute before the pillow was tossed to the side, forgotten when Katsuki’s hands found his hips instead. The time slipped by quickly, only getting to share a few deep kisses before the sound of Katsuki’s phone going off broke them apart. They rushed to get ready for work, exchanging another sweet kiss at the door before Katsuki shot off to save the city. Izuku watched him for a moment, still as love-struck as he’d been when they were teenagers. 

Izuku tightened his tie and headed toward UA. If all he got for his birthday was Katsuki’s morning kisses, then he was truly a lucky man. Being Katsuki’s boyfriend was enough.

But he should have known Katsuki never aimed for ‘enough’. Especially when it came to Izuku.

~**~

The day, for the most part, was pretty normal. His class had come together to make cupcakes without him knowing about the surprise. Catching a glimpse of Aizawa leaning in the doorway while they sang to Izuku helped him figure out who assisted his students in putting together the sweet gift. He only let his birthday distract for a few minutes before clapping his hands, shooing the students with their cupcakes back to their seats to continue with class. Other than the occasional mentions of his birthdays from fellow teachers, and the flurry of texts from friends and family, Izuku treated the day like every other one he stepped into UA.

When the bell rang to end the day, he waved out all his students before heading back to his class to finish up his paperwork. There was no reason to rush home; Katsuki always had a meeting after his shifts on Tuesdays, which meant he’d be coming home to an empty house. Not that he minded, since it was the one day Katsuki let him take on the task of dinner. Even if his boyfriend was better in the kitchen, Izuku liked to carry his weight in the relationship. While he finished grading papers about historical quirk breakthroughs, his mind went through the different meal options to make.

Except, when he made it back home, he blinked in surprise at the light shining from their kitchen window. One that he knew hadn’t been on when they left.

“Hello?” Izuku called out when moving through the entrance of their home, slipping his shoes off beside the boots. If that didn’t give away Katsuki’s early arrival, the delicious smell coming from the kitchen would. Curious, Izuku crept down the hallway, eyes growing wide at what greeted him. “Oh, Kacchan…”

The table was set up for two, one of his scented candles sitting between the plates. Katsuki, dressed in his casual clothes, stood in front of the stove, finishing laying out the cooked food onto the serving plate. Too stunned to speak, Izuku moved around the table to slip behind Katsuki, pushing onto his toes to hook his chin over the other’s shoulder. Wrapping his arms around Katsuki’s torso, he gave a squeeze in greeting while pressing a welcoming kiss against the exposed neck. The damp nape and sweet smelling skin proved Katsuki had already taken a shower, meaning he’d been home long before his normal shift ended.

“What is all this?” He asked, catching the dry look Katsuki gave him before returning his focus back to finishing his cooking. 

“What’s it look like? Obviously, your birthday dinner.” 

“You didn’t have to do anything special for me,” Izuku whispered, despite his lips curving into a smile at the kind gesture. “It was my night to cook for you.”

“You snooze, you lose. Next time, don’t be a nerd and come home after work.” Katsuki smirked at his own tease, freeing up a hand to reach back and pinch Izuku’s scarred cheek. “And when do I ever do something I don’t want to? Any guy worth half their weight can make a simple dinner for their boyfriend. Don’t act like this is a special present or something, Freckles.”

Izuku felt himself flush under the gentle squeeze of his cheek, though he didn’t know why. It wasn’t like Katsuki had whipped out a five-course meal or something too intricate. Really, katsudon was probably one of the easier recipes Katsuki had in his mental cookbook. But something about him making Izuku’s favorite dinner, specifically for his birthday, felt special. He did it without asking, just knowing Izuku and his preferences. Katsuki’s desire to surprise him, even after years of being together… it felt intimate.

“Alright, Nerd. Dinner’s done; its time to detach.” 

At Katsuki’s order, Izuku sighed, nuzzling into the soft skin once more before he stepped back. The instant reward came when Katsuki spun around, fingers weaving themselves into Izuku’s curls before tugging his head back. The tiny nibble of pain only made the pleasure of Katsuki kissing him double, Izuku shivering over the slow way Katsuki reacquainted their mouths. Katsuki kissed him like it’d been days, not hours, since they’d locked lips. But Izuku wouldn’t complain, lashes struggling to rise again when the exchange ended. 

He only opened his eyes when the tie around his neck loosened, looking down to see Katsuki tugging apart the knot he’d put into the fabric that morning. Once the two pieces hung on either side of his chest, his boyfriend grinned, collecting both in his large hand. 

“Come sit down.” One tug while walking backwards urged Izuku to silently follow, caught in the allure of Katsuki’s teasing tone. The flare of heat in his stomach felt juvenile, but he always lost his cool when his boyfriend’s attention honed in on him. From childhood to now, being the center of Katsuki’s world, even for a moment, made Izuku’s heart flutter. Like a well-trained dog, Izuku followed the tugging on his make-shift leash, sitting when Katsuki pulled out the chair and nodded at it. The unwavering obedience earned him another kiss before Katsuki moved back to serve the dinner.

Izuku didn’t know what he loved more; the perfectly cooked katsudon, or the pleasant conversation they shared between bites. With ankles hooked under the table, the two spend the meal exchanging light conversation about their day. Izuku loved hearing about Katsuki’s small fight with a low-level villain, and him scolding a group of kids for throwing a classmates’s shoes into a tree. He shared what the students did for his birthday, catching Katsuki’s smirk when mentioning Aizawa’s probable involvement. The dinner wasn’t lavish, the set up of their table nothing over the top. But it felt comfortable, like a well-worn sweatshirt from years of use. He wouldn’t have traded the quiet evening for any over-the-top reservation in some fine-dining restaurant.

“I’ve got the dishes,” Izuku said after the meal was done, rushing the second part of his sentence out before Katsuki could protest. “That’s the deal we have, Kacchan. One makes dinner, and the other cleans up afterward. No exceptions was your rule.”

“Don’t use my words against me like I’m a brat.” But Izuku didn’t mind the scolding when Katsuki pushed away from the table, walking toward their bedroom while waving over his shoulder. “Whatever, knock yourself out. Come find me when you’re done.”

Izuku watched the powerful frame until it disappeared out of sight, sighing over his fortune before moving the empty dishes toward the sink. A quick look at the dishwasher proved Katsuki had already done some of the work before Izuku got home, Izuku opening the door to let the lingering steam escape. He made quick work of rinsing the extra food off before he set them aside, beginning to work on putting away the dried dishes.

But when Izuku opened the cabinet for the breading bowl, he paused. There, with a pretty green and orange bow, was a wrapped present. The square gift sat exactly where Katsuki kept the mixing bowl, which meant it hadn’t been there long. Obviously his boyfriend left it there, though by accident or with purpose was a mystery. 

“Kacchan?” He called toward the hall, though his eyes didn’t leave the curious surprise. “Did you… there’s something wrapped in the cabinet.”

When he didn’t get an answer, Izuku slowly placed the clean bowl on the counter, reaching up to take the gift off the shelf. The perfect wrap job was the first thing that caught Izuku’s attention, drifting out of the kitchen to sit on the couch in the living room. He hesitated to tear apart something so pretty, but seeing his name on the tag stuck to the present’s corner proved it was his to open. The temptation to take a picture of it was strong, but he’d left his phone in the kitchen, and he was too curious to wait any longer. Sliding his hand under the fold on the back of the present, he ripped the wrapping away, unsure what he was seeing. Because it looked… exactly like his hero notebooks from his childhood.

Except it wasn’t his handwriting scribbled over the cover.

“Creation of Hero Deku’s Suit…” The schematic drawn on the front of the journal looked similar to his current suit, though he knew the rogue draft wasn’t the final form. Stunned, he took a second to stare, slow to slide his finger under the cover and flip it open. 

There, under the simple title of ‘Day One’, Katsuki’s writing filled the page. Izuku took his time reading the words, which felt more like a diary entry than anything scientific. He knew the date written on top of the page well; it’d been when he used the last of One For All’s embers. And while Katsuki had written steps in the columns regarding reaching out to Mei and Melissa, as well as his current bank account balance and income, it was the frantic promise at the bottom of the page that made Izuku’s breath catch.

Deku’s accepted he won’t be a hero like the rest of us, but I refuse to be number one until he’s fighting me for the spot. It’s not worth it if he isn’t by my side.

“Oh, Kacchan.” Struggling to keep himself from crying, Izuku flipped to the next page, soaking in the next wall of information. 

He wasn’t sure how long he sat there, taking in the journal entries from the years between losing One For All and getting the suit. There were pictures, drafts, and different experiments for the suit that got scraped for one reason or another. Katsuki’s emotions covered the page; his joy when the energy whips held his body weight. The despair of a certain material failing Mei’s safety check. Anger over losing ranking on the hero chart, not because of his pride, but because of the money it took from the project. His heart ached for the smaller pages, where Katsuki started to realize his need to see Izuku smile wasn’t just because they were friends. How he became so insecure toward the end, when Izuku stopped speaking about being a hero in favor of his teaching career.

By the time he made it to the final page, Izuku knew stopping the tears pouring down his face would be pointless.

I never planned for anyone to see this, Katsuki wrote, the date from the day before smudged at the top. Don’t know how I didn’t burn this shit the second I gave you the suit. And since you’re probably blubbering like a baby right now, let me tell you this; I don’t regret a single thing. Not the hard days. The money I poured in. How many times I had to be Mei’s experimental doll to get her on the mission. Everything I did to get you back in the skies with me, every bloody fist and pathetic breakdown I had, was worth seeing you truly happy. 

All my life, I’ve wanted to be the best hero. To be someone’s All Might, and keep the people safe with my awesome quirk. And I’m right there, at the top of the damn rankings, doing exactly that. Being everything I swore I would at four years old. But, you wanna know something? That means nothing when comparing it to where I am right now, writing this. Under the roof we bought, in the bed we share, with you snoring like a foghorn next to me. You’re worth… so much more than anything I could have imagined. Calling you mine is my greatest accomplishment yet. 

I love you, ya Damn Nerd. As a hero. As a quirkless teacher. But most of all, as my soulmate. And so long as I’m the guy you’re coming home to, be whatever you want. Just keep me by your side for the rest of our lives.

So clean your damn face off and come celebrate your birthday with me.

Love, 

Your Kacchan

The surge of affection that wrapped around his heart was almost too much for his ribcage to contain. Wiping his sleeves over his splotchy cheeks, he continued to sob, overwhelmed by the pure adoration in the journal. Katsuki had loved him for years, thought of him and only him. The intensity of his emotions wrapped him in a whirlwind of thoughts he couldn’t settle on. Dropping the journal onto the coffee table with the promise to read it in detail, he stumbled out of the living room. Izuku couldn’t find an ounce of care over the messy kitchen he left behind when rushing through the hallway, bursting into the bedroom doorway to find the man who deserved a thousand vows of eternal love.

“Kacchan, you—” Except his plan to shower Katsuki in his verbal affection dropped out of his head at his first glimpse of his oddly quiet boyfriend. He should have known something was off when the man hadn’t come out to gloat over Izuku blubbering from his top tier gift, as he always bragged about being the best present giver. 

But when seeing Katsuki, laid out without clothes, on their bed, all of it made perfect sense. The only hint of fabric was a thick satin ribbon, which tied around his nape and over his hips (hooking under Katsuki’s hardened arousal) like a present. Floored at the image, Izuku only sniffled in the silence, eyes feasting on how gorgeous his boyfriend was in the lower light. The heat of the July day made hints of sweat glimmer on the pale skin, Izuku’s mouth watering with the desire to lick it off. Emotional and aroused, Izuku was frozen in the doorway, helpless to do anything but watch Katsuki roll his eyes.

“Should have given you this gift before the notebook, ya damn crybaby.” Lifting his hand, he curled his fingers, parting his legs wider to give a better view of his tantalizing body. “Come enjoy your present. Unless you want to go back and read your journal.”

“Kacchan’s so mean,” Izuku whimpered, quickly regaining his mobility when stumbling across the short distance and crawling onto the bed. 

He moaned into the welcoming mouth when their bodies pressed together, unsure how he still felt so vulnerable when he was the one fully dressed. Katsuki didn’t waste a moment devouring Izuku’s kiss, snapping his knees on Izuku’s hips before using his strength to flip them over. With the warm tongue sliding between his lips, Izuku didn’t care about the position change, arching his hips up to better rub against Katsuki’s sweaty skin. His clothes bunched and tugged with his movements, and he huffed his irritation into the smirking mouth against his. 

“Someone’s eager,” Katsuki said, though the quick way he lifted up to tug Izuku’s pants and boxers off proved the sentiment was mutual. Once satisfied with his work on the lower half of Izuku’s work suit, Katsuki straddled him, leaning forward to begin his slow unbuttoning of the white shirt. Having a naked, wrapped Katsuki rubbing his dick against the sliver of his stomach sent Izuku’s hormones into overdrive. Gasping into their wet kiss, his hands grabbed the bare thighs squeezing his hips, only breaking apart once the shirt was completely undone.

But, instead of demanding Izuku get up to yank off the wrinkled shirt, Katsuki grabbed the edges and stared down on Izuku. “Ready for your last gift?”

“Yes.” A blink of his eyes proved he was still a mess, tears leaking out from both his arousal and his overflowing love for the man above him. “Wait. I didn’t plan for this today. Not that I’m saying no! I just need to shower and—well, you know.” 

He didn’t want to ruin the moment, but years of sleeping with Katsuki made some things pretty evident. Izuku couldn’t simply ‘take’ Katsuki without some serious prep, and they’d learned it was easier for him to relax the muscles in the shower. Plus, it made the post-orgasm mess easier if Izuku cleaned before letting Katsuki melt his mind. It was almost painful to think about getting off the bed to deal with such mundane things, but it would be worth it after their hormones were satisfied. 

Except, instead of scowling and getting off Izuku, Katsuki only grinned. The flush crossing the bridge of his boyfriend’s nose was rare, but Izuku didn’t have time to ask about the contrasting responses before Katsuki laid back over him, tongue sliding along the curve of his jaw. Izuku shivered at the sharp bite of pleasure, fingers digging into Katsuki’s thighs when soft lips sucked on his earlobe. He panted like a dog when his hips tried to roll up into Katsuki’s body, but he could only squirm from the way Katsuki’s legs trapped his waist to the bed. 

When Katsuki spoke, it was a slow, smooth tone that hummed against Izuku’s sensitive ear. “That’s your present, sweetheart.”

“Huh?” Brain soup from the seductive whisper teasing his skin, he didn’t realize what was being offered until Katsuki’s hand grabbed one of his, prying it off the muscular thigh to lead it over the ribbon and the softer flesh of Katsuki’s ass. But then, in a move that froze Izuku, the touch was pushed even further, fingertips finding a wetness between warm cheeks. “Oh…oh, that’s—Kacchan?”

At the call of his name, Katsuki dropped his head down to hide in the crook of Izuku’s neck. Izuku tried to process what was happening, despite the obvious evidence literally put into his hands. In the years they’d been together, sex had been explorative and fun. They kissed, touched, and fell apart in every way possible, both feeling safe enough to at least ask about vulnerable or embarrassing desires. But the one thing Izuku had never spoken about, despite being curious about the possibility, was being inside Katsuki. He’d given his body to the love of his life without a second thought, and never regretted it. Even at the beginning, when things were a little painful and very awkward, Izuku loved feeling connected to Katsuki in a way he’d never shared with another. Katsuki never brought up switching, and from some tipsy conversations with other friends who ‘topped’, it wasn’t a preference most wanted to change.

But here Katsuki was, a literal wet dream that Izuku never dared to ask for.

“Kacchan, how did you—”

“You’re the worst secret keeper when you’re drunk,” Katsuki muttered, kissing the base of his throat. “My birthday, you went on a rant about how you wanted to be my first in every sense. Got pretty graphic, ya little perv.”

He wanted to protest, but a pressure on his wrist made the tip of his finger slip past the relaxed rim, forcing the air from Izuku’s lungs.

“Took me a couple months to come around to the idea, figured out if I’d even like it when you were out with the nerd squad.” Thinking about Katsuki experimenting with himself, thinking of Izuku, made every nerve boil with desire. “Got a lot better when I found my prostate.” 

“Oh, wow.” He shuddered and pushed his finger deeper, as if wanting to find the mentioned spot as well. Just feeling the prepped warmth clench around his touch made his arousal twitch, almost ashamed how close the gentle flutter made him want to come. “And… and you’re sure? We can talk about it if you’re still testing things out.”

“I know that.” Rocking his hips back while he rose up, Katsuki’s growing blush didn’t change the desire staring down at him. “But I wanna see why you make such lewd faces when I’m fucking you every night.”

Eyes wide, Izuku could only nod, chest heaving from the anticipation. Despite feeling how relaxed the rim was around his finger, Izuku still needed to make sure Katsuki experienced the best pleasure he could. He grabbed the lube with his unoccupied hand, pulling his finger out to re-apply the protective gel before returning with two. Katsuki didn’t shy away from the touch, pressing his hands on either side of Izuku’s head while watching with half-lidded eyes. 

While having Katsuki over him limited his sight for prepping Katsuki, the previous work made syncing the fingers inside a little easier. Plus, it gave him the benefit of watching Katsuki’s fluttering lashes and moans muffled when he bit his lip. Cradling the warm body against his bent legs meant he felt every time Katsuki arched his back and tried to rock into Izuku’s fingers fucking him open. With the warmth of the room, their bodies slid together from perspiration, lube dripping from his fingers to where his cock laid twitching beneath. Katsuki did nothing half-way, and seeing him trying to ride Izuku’s thrusts despite never being fingered by someone else left Izuku desperate to be even closer to him. He wanted to be the only one who would know Katsuki to his very core.

“I want you,” he forced out, hoping his plea sounded enamored over pathetic. “You’re so amazing, I—please, Kacchan. I love how you feel, I love you. Wanna love you forever.”

“Such a motor m-mouth.” Despite his tease, Katsuki’s body crumpled forward, his eagerness filling the next deep kiss they shared. 

Izuku felt his fingers slip from the cherished heat of Katsuki’s body, his hand scrambling to grab the built torso when Katsuki’s palm stroked down his arousal. The sudden pleasure made him cry out, arching high enough to jostle the body over him. Quick reflexes meant Katsuki balanced his weight on one hand and his knees, giving him free reign to press Izuku’s tip against his welcoming rim. Both sucked in a sharp breath, eyes meeting like a thread tugged them together. There was a moment of tension, Izuku trying to ask a final time without words if Katsuki was sure. The only answer he got was a cocky grin before Katsuki widened his legs and sunk down.

Izuku wasn’t sure how Katsuki managed such hot pleasure every time they had sex. Katsuki’s body felt perfect surrounding him, Izuku digging his fingers into Katsuki’s thigh to try and keep himself from coming. He wanted to enjoy the first time being inside his boyfriend, but it was more than that. Katsuki deserved to experience the reward for all his hard work, and Izuku climaxing three seconds into the exchange would take that victory from him. Izuku breathed through his mouth to try and settle his racing heart, though a whimper escaped when wet heat clenched around him once Katsuki bottomed out. Back arching off the bed, he could feel sweat collecting in the center of the shirt trapped between him and the bed below.

Katsuki rotated his hips slowly, the groan Izuku had learned by heart a bit lighter than his normal bliss. Another sensual roll of the hips, more a wiggle than an actual bounce, made Izuku dig his head into his pillow to keep from losing his senses. Red eyes opened above him, the normally composed hero letting the sensation of his movements part his lips. Just seeing Katsuki enjoying their new connection made Izuku’s hips rabbit up, trembling when he couldn’t get any deeper with Katsuki pressed against him.

Catching onto Izuku’s growing desire, Katsuki leaned down, both gasping at the shift of Izuku inside him. Composing himself faster, Katsuki pressed a gentle kiss onto Izuku’s panting mouth, the sweetness almost mocking the intensity of their grinding hips. 

“Happy Birthday, Izuku.” Hearing his name washed over him like an ocean wave, Izuku helpless to do anything but watch his showstopper boyfriend rise back up onto his knees. “Enjoy your present, but don’t come too fast.”

Then, Katsuki moved. His slow, steady pace only lasted a few moments before he caught the rhythm he wanted. After the pleased sigh, Katsuki leaned his head back, using Izuku’s willing body like his favorite toy. Izuku didn’t know where to look, eyes darting at the moving muscles without settling on one spot for long. When he was the one indulging, letting Katsuki take care of him, his mind was full of physical sensations. The new dynamic let Izuku watch with a clearer head. Each time Katsuki dropped, fireworks went off in his stomach. The grip, the warmth, everything about the moment was perfect. 

But what really left him awestruck was his birthday present; Katsuki. Everything Katsuki was truly giving him overwhelmed Izuku. It wasn’t about power or dominance, but trust. Katsuki offered to share the experience with Izuku, simply because it was something Izuku had wanted. Awestruck, he watched Katsuki’s face shift between craving more pleasure and the relief when grinding Izuku’s tip into his prostate. Izuku stroked his flushed thigh, the other hand sliding up to cup the toned pectoral. Rubbing his thumb over the hardened nipple, he moaned in sync with his boyfriend’s shocked gasp. He was so in love with Katsuki, watching his bliss as he rode Izuku harder. Izuku couldn’t imagine any love comparing to the deep bond they shared. 

Who needed flashy, quick romance, when what Izuku and Katsuki had was etched into their very souls?

It was that emotional realization, paired with Katsuki’s shuddering body on the next thrust, that sent Izuku over the edge. With his orgasm slamming into him, Izuku cried out, jerking up into Katsuki several times to ride out his climax. Katsuki’s grin was the last thing he saw before squeezing his eyes shut, the sensation too extreme to keep them open. Katsuki’s grunts got lower when Izuku felt the rutting against his stomach, the body tensing before a string of swears coiled around his ear. Sucking in a few heavy gasps, Izuku forced one eye open, catching Katsuki’s gritted teeth and shoulders twitching in time to his small hip thrusts. Despite feeling the biting edge of oversensitivity, he didn’t yank out, letting Katsuki ride his orgasm completely before his boyfriend hissed and pulled off.

Izuku only needed to squeeze his thigh once for Katsuki to sway forward, laying over his chest as he tried to catch his breath. Both sweaty and covered in different fluids, Izuku knew a shower was in their immediate future. Humming to try and get his brain fully back online, Izuku reached out and cupped Katsuki’s flushed cheek, tilting his head back enough to look at each other.

“Are you okay?” Izuku asked, thumb gentle when tracing the edge of Katsuki’s scoff.

“Don’t worry, Freckles. Your dick didn’t do any long-lasting damage.” At the taunt, Izuku’s face burned, though his moment of embarrassment lowered when Katsuki glanced away. “How was it? Everything your perverted head dreamed of or what?”

Izuku blinked, then smiled at his boyfriend’s hidden shyness. Katsuki loved being the best, and even now, he wouldn’t settle for second best. That was how their love stayed so strong; they’d always be trying to one-up each other. Not to demean or bring each other down, but because they were soulmates. The best gift they could share was making the other happy, but it didn’t need to be passionate displays for the world to see. Whether through home-cooked meals, nerdy journals, or fulfilling a vulnerable fantasy, they knew each other. And he was okay with the lack of constant 'excitement' if it meant he got to have Katsuki like this, resting on his chest in their happy home. To cuddle with Katsuki every night was the only thing he needed.

Squeezing Katsuki’s cheek, Izuku used his other hand to grab the knot of the ribbon still wrapped around Katsuki, tugging it once to let it spill onto the bed below. He waited until red eyes found his again before he leaned down, mumbling against the other’s lips. “You’re the best birthday gift I could ever ask for.”

“You’re such a sap.” But Katsuki followed up his insult with a kiss, proving he didn’t mind.

And Izuku was so happy he got to live his dream, with Katsuki by his side.