Short IzuMomo smut that I had a sudden wave of inspiration for.

Please note that all characters are aged 18 or older.

Disclaimer: I don't own My Hero Academia.

Enough was enough.

Momo had been very patient with her boyfriend, respecting his boundaries and slowly getting him to open up more and more, but right now, she knew what she wanted.

And she was going to get it.

They'd been dating for a little longer than a year, having confessed, admittedly awkwardly, towards the tail end of their second year in UA. It hadn't been a smooth start, as both found themselves exceptionally flustered in each other's presence, to the point where being bold enough to initiate physical contact seemed like something that would only be done under duress.

Much to the amusement of their fellow classmates.

That being said, they became more used to each other's presence as time went on, to the point where Izuku, the shy, somewhat introverted boy that he was, would be the one to initiate something as mundane as holding hands with his girlfriend.

Momo could always feel her heart swell whenever he did this – it felt like he was really making progress in this whole 'relationship' thing that neither of them had had any prior knowledge nor experience of.

She often wondered what exactly it was that drew him to her. She could hazard a guess, of course – she was well aware that she was rather generously gifted when it came to her physique – but she didn't think her beloved Izuku was that shallow. Whilst he associated with the class pervert, Mineta, he never condoned said boy's disgusting behaviour.

In comparison, Momo could hardly list everything that she loved about the frizzly-haired boy. From his drive to be not only a great hero, but the best hero, to the point where he would willing throw himself in the line of fire to save someone, anyone, so long as it meant that he could stop the villain, to his bashfulness and how anxious he could be in certain social situations… she loved all of him.

Despite how clearly head over heels they both were for each other, neither had the guts to outright say they loved each other. During their confession to each other, they'd kind of fumbled around the word before stuttering out something along the lines of "I like you."

Which led to their current predicament.

Now midway through their third and final year of UA, it was safe to say that all of Class A was on the verge of becoming young adults. And with that territory, it was natural that they would all be rather interested in each other, so to speak. Being a place of education, UA had taken the necessary precautions to hold sexual education classes, thoroughly explaining the ins and outs, thanks to Midnight, that doing the 'horizontal tango' entailed.

To this day, Momo still remembered how red Izuku became in those classes – this clearly wasn't a topic he wanted to address anytime soon. Nevertheless, he dutifully took down notes in his usual hasty yet detailed manner, indicating that whilst this might've made him uncomfortable, he was at least interested in the topic.

Momo had witnessed all of this – admittedly with a similarly deep shade of red adorning her own cheeks – and felt the gears in her head turning, a plan starting to take shape.

After all, it wasn't every day that you turn eighteen.

The plan was simple – invite Izuku over to her dorm room to study, request some assistance in understanding anatomy, getting him to strip off at least his shirt before making a move on the freckled boy.

She'd spoken to her classmates about her plan – whilst Ochako had blushed profusely before giving her approval, Mina and Tooru had completely agreed, demanding that they be kept up to date with how this plan would work out.

So, here she was – the morning of her birthday, having finally turned eighteen.

There was no way she wasn't going to get what she wanted today.

Getting up, she quickly reached over to her chest of drawers, grabbing one of many tracksuits that lay in wait inside, placing it on her bed before she began to strip off out of her pyjamas.

As she slipped off her top, she felt the soft cloth rub gently against her nipples, causing her to moan slightly before smiling to herself. With any luck, that wouldn't be the only moan she would do today.

Slipping off her pyjama bottoms, a devilish idea struck her. Something she normally wouldn't do because of how shameful it would be.

But she was playing the long game in this, she needed Izuku to see her beauty if she was going to successfully pull off her scheme.

Whilst she normally didn't sleep with a bra on, she preferred to have some underwear on – it felt more comfortable to her. Taking a moment to admire her exquisite form in the full-length mirror next to her sizeable bed, she grabbed onto the sides of her panties, gently pulling them down before letting them fall to the floor.

Still looking herself in the mirror, she smiled. Whilst she could sometimes have her confidence shaken, as Izuku knew fairly well – he'd helped her out of her rut several times in the past – if there was one thing she was always proud of, it was her physique. A more modest part of her knew that she only looked this good because she'd put in the work to stay physically fit and to have her quirk work well with her own body, but a small part of her, a selfish and proud part of her, screamed in joy, knowing how drop-dead gorgeous she looked.

She let her hands roam her body for a moment, feeling how smooth her skin was. Her ample breasts stood proudly on her chest, rising and falling with her breathing. Her stomach was, for the most part, soft, but if one were to place their hand on her abdomen, they would notice how strong her core was. The only reason she didn't have a six pack was simply because she had to keep the level of body fat in her system high for her quirk to work optimally.

Then there were her legs – toned almost to perfection. The sheer amount of muscle that was hiding underneath that soft, supple exterior wasn't immediately obvious to many, but those who knew her were fully aware of what she was capable of doing with them. The only 'blemishes' upon her nigh flawless form were a few small scars she'd picked up in training to be a hero.

As she admired herself, she contemplated – what would be Izuku's reaction to seeing… everything? How would he react to seeing all that she had, all that she was? Would he become excited? Hard to tell. Would he be flustered? Probably.

Would he refuse and run away?

She didn't want to think about that.

Shaking her head, she grabbed the pair of jogging bottoms that she'd set aside earlier, pulling them on, indulging in her devilish idea that she'd thought up prior. Continuing her protocol, she reached for the top of her tracksuit, slipping her hand into the soft material, pulling it over her naked body. The soft touch of the material reaching places which were normally covered by some form of underwear was a foreign feeling, but not unpleasant to her in the slightest.

Once again admiring herself in the mirror, she noted how aware she now was of how well her outfit seemed to hug her in all the right places, showing off her form whilst not overtly exposing anything.

When she thought about how Izuku would react when he saw this…

She couldn't help herself.

Sliding her right hand into her jogging bottoms, she began slowly massaging the area between her pubic hair and her most precious place, feeling a tingling feeling reverberating through it as it shuddered, causing Momo to take her left hand and slide her top upwards, letting her breasts fall downwards as she held the top with her teeth, moving her free hand onto her gracious bosom, using her index finger and her thumb to tweak at her left nipple, a gentle moan escaping her lips.

She upped the intensity, now grabbing hold of her breast with her whole hand as she slipped a finger into her flower, juices beginning to seep forth. She could feel her knees beginning to weaken, but she couldn't stop herself – this feeling, the constant, surging waves of pleasure simply felt to good to not embrace, slipping yet another finger into her hole, her thumb occasionally brushing against her clit.

Finally giving into the weakening of her knees, she collapsed forwards, hunched over on the floor yet nonetheless continuing her work as she constantly rubbed away, feeling her release inching ever closer with each wave of sheer bliss.

A knock at the door shocked her out of her stupor, her eyes widening as she twisted her head towards the source of the noise immediately, her hands stopping.

"M-Momo?" A muffled voice, the sound of her boyfriend, came through the door. "I-is everything a-alright?"

Izuku had come to check on her, evidently worried that she hadn't come downstairs for their morning run yet.

He was right there.

And yet.

Momo just couldn't stop herself.

She continued, clenching her teeth as she teetered on the edge of her orgasm, spurred on by the thought of her boyfriend potentially seeing her doing something so shameful.

She was certain she had a perverted look on her face.

"I-I'm fine!" She struggled, her fingers scraping away at her insides, the cusp of her release teasing her as it seemed to refuse to finally arrive. "I-I j-just slept in a l-little!"

"A-are you s-sure?" He questioned quietly, not wanting to wake up any of her neighbours. "You sound… strained." Genuine concern ringing in his voice.

"I-I'm okay!" She strained, her eyes tightly closed. "I-I'm just d-doing some s-stretches! D-don't want to p-pull a m-muscle!"

"O-okay." He replied, dejectedly, causing Momo to feel bad for just a moment. "I-I'll wait downstairs."

Momo's eyes widened, finally feeling her hard work pay off, her most precious place spasming with each and every wave of constant pleasure that seemed to completely take over her body. She straightened her body upwards, kneeling as she felt her juices squirt outward, soaking the bottom of her mirror. She let out such a moan, such a powerful release of the stored air in her lungs as she desperately reached for her release, she was afraid she would be heard in the next building over. She finally felt her release coming to an end, her muscles relaxing as she fell backwards onto the soft carpet below.

She lay there, eyes closed, basking in the afterglow of her exercise, her clothes only loosely covering her form.

"M-Momo?" Izuku's voice rung out from the door once again. "Are you sure you're okay? That was a loud noise…"

She turned her head slowly, options churning in her head. She could lie, say she pulled a muscle and continue with her day like she hadn't just lied through her teeth so she could finish masturbating.

Or, she could…

She decided to go with the latter.

Finding the strength to stand and using the assorted furniture as props, she moved towards the door, still largely unclothed.

She laid her hand on the door handle, undoing the locking mechanism before swinging it wide open.

Izuku, to his credit, did have a particularly concerned expression on his face. However, that didn't last long as he suddenly realised Momo's state of dress, immediately averting his eyes and looking upwards, acting as though it were a sin to even see his girlfriend in such a situation.

"M-M-Momo?!" He asked, his face reddening by the second, his entire body going stiff.

Including the region that Momo had hoped would go stiff, it seemed.

Smiling slyly, Momo reached forward and grabbed him by the wrist, pulling him into her room before locking the door, slamming the boy against the door as she pinned him in place with her arms either side of him.

"W-what a-are you d-doing? A-are y-you o-okay?" He stuttered, desperately trying his hardest to avert his eyes at all costs, though Momo could see every now and then that he would glance at the corner of his eye downwards, at her naked skin.

"You're mine…" She muttered, inching forward. Her breasts pushed up against his tense form, causing him to further tense, if that were possible. She hooked a leg between his, pulling him inward with it, causing their faces to be mere millimetres apart. She held the position for just a moment, their noses grazing against one another briefly before she plunged her lips onto his, her eyes closing.

Whilst she'd kissed him before, those were just simple pecks or the occasional loving kiss. Neither had been even close to this degree of making out, so whilst Momo knew that kissing Izuku made it feel like fireworks were going off in her head, when she started making out with this boy, she was completely unprepared for what was some come.

Where previous kisses had been like individual fireworks, this was like the full firework show was going off every second that their lips remained connected. Wanting more of this feeling, Momo moved her hands from either side of the freckled boy, latching them onto him – one hand found its way into his green messy hair, getting lost in the soft curls, whilst the other made it's way onto his back, pulling him closer.

Whilst Izuku was initially tense, she could feel him relaxing slightly, his eyes fluttering shut as he reciprocated the kiss. Even so, his hands remained at his sides, clearly still in shock of her bold actions.

Momo and Izuku's tongues continued to battle for dominance, but it was clear that, because of Izuku's meek nature, Momo was clearly the victor. Yet it was clear that the shy boy wasn't going to give in so quickly, as evidenced by him finally, though admittedly slowly, moved his previously static hands from his sides and wrapped them around her, one resting at the base of her spine whilst the other situated itself between her collarbones, further bringing them closer together.

Breaking off the kiss, the two lovers gasped for breath, clearly unaware until now of how short their intimacy had left them of the necessary amount of oxygen, but all the while their hands never left their previous positions, keeping them close.

Glancing up at Momo – she was taller than her boyfriend, after all – Izuku found his face becoming even more flushed than it had previously been. The look that she was donning… sultry didn't even begin to describe it. Her hair, usually neatly tied into a ponytail, was tussled, giving an almost wild look to the normally prim and proper girl. Her eyes were half open, constantly staring at her boyfriend, taking deep, panting breaths as she took in the sight of his form, never moving away from him. Her dishevelled clothes only added to this, frankly, sexy look of hers – of course, there was the fact that a fairly large part of her skin was naked and pressing against him, but somehow it all came together to form this incredibly beautiful and sexy work of art.

Even Izuku would struggle to control himself in a situation like this.

Momo's eyes widened as Izuku suddenly took control of the situation, stepping forward and crashing his lips onto hers. It was surprising, but not unwelcome, as she reciprocated again, her hands working their ways down from their respective perches as they found their way to his clothing, slowly unzipping his top to reveal his muscular frame. Her hands running over his chest, she started stepping backwards, leading him towards her bed, all the while remaining in their constant state of being intoxicated by each other, their lips refusing to part.

Continuing towards their shared destination, Izuku's hands found their way to Momo's supple breasts, cupping each in his rough, calloused hands. Momo was certain that his body temperature increased tenfold as he did, but she didn't mind – she was happy he was taking the initiative.

Colliding her heel with the edge of the bedframe, she squealed as she fell backwards, landing upon the soft mattress before Izuku landed directly on top of her, scrambling to get up in case he hurt her. With the situation effectively reversed from moments prior, Izuku now had his hands either side of Momo's pinned form, a flushed expression donning her face.

"M-Momo…" He stuttered, clearly fighting the part of him that wanted to look away from her exposed self. "I… I…!"

Lifting her hand to his face, she gently placed it upon his cheek, causing him to maintain eye contact with her.

"Izuku." She spoke clearly, but with a slight tone of hesitation. "I… want you… to do this with me…" She flushed, but still kept looking him in the eyes. Furthermore, she activated her quirk in the palm of her free hand, materialising a condom in front of her boyfriend. "I want you…" She flushed even harder, breaking eye contact as the embarrassment became too much, "…to be my first."

Swallowing, Izuku similarly looked away. "A-are you s-sure you're o-okay w-with me?"

A small nod was all that Momo could give, still holding out the newly created condom.

"R-right then…" Izuku muttered, moving closer to Momo once again, gently placing his lips upon hers, eyes closing. The creation quirk girl simply wrapped her hands around his neck, their bodies pressing against one another before she wrapped her legs around his waist.

Where their previous kisses had been like fireworks going off ferociously, this one was more… tender. There was real emotion behind it, beyond just wanting each other, and as a result, Momo could feel herself becoming light-headed.

For that moment, it was as though the world outside of just the two of them didn't exist – they were so engulfed in each other, in exploring what would make both of them feel as good as possible, it was as though nothing else mattered.

Untangling one of her hands, she journeyed southwards, reaching the hem of Izuku's tracksuit bottoms. She toyed with it for a moment, feeling his body tense and relax depending on where she touched, before plunging her hand under the material, feeling his growing bulge throb against her soft hands.

She ran her hand over the stiff surface of his member, the occasional twitch throwing her off every now and then but not enough to stop her from enjoying this moment. Taking her other hand, but still remaining engrossed with kissing her beloved, she pulled down his bottoms, allowing his member to stand free, pointing directly towards her before she took hold of it with both hands, running her hands back and forward.

In response, Izuku broke off the kiss, tensing as he gasped – he dipped his head downwards, shuddering. Taking this moment, Momo untangled her legs from Izuku's waist and slipped herself downwards, sliding off the edge of the bed before sitting, staring directly at Izuku's cock as it stayed within her hands.

If she was being honest, the shape of it was rather grotesque, but there was something about how proudly it stood, especially on the body of such a quiet boy, which amused her.

Nonetheless, she shifted forwards, laying her lips upon the head of his shaft, licking the tip briefly before taking it further. Her inexperience with this kind of thing was fairly obvious, as she found herself struggling to take it much beyond the head, but evidently that didn't matter to Izuku, whose hands had found their way to her head, gently pushing her onto his member, but not so much that she'd feel like it was too much.

As she continued to suck at his engorged penis, her head going back and forth as much as she could, she began to run her tongue over the head. Whilst she had no idea whether what she was doing was actually doing anything for her boyfriend, she at least wanted to do the best that she could for him.

And evidently, it was getting him off – he continued to shudder in small waves of ecstasy, similar to how Momo had been when she was masturbating earlier. Matching the speed of her bobbing head, she moved her hands as much as she could – he wasn't particularly small, by any means, but he also wasn't as ridiculously well endowed as some of the more raunchy books she'd read in her spare time had implied their male characters to be. Nonetheless, this increased motion seemed to be doing wonders for the freckled boy, as she could see his knees buckling before her eyes.

"M-Momo…" He strained; eyes still closed. "I-I'm gonna…!"

At the sound of that, she stopped, pulling back from him and removing her hands from his member as she took a moment to massage her jaw. For such a simple task, it was surprisingly straining on her jaw. She looked up to see Izuku both sighing in relief but also wearing a small expression of disappointment.

"Now, now, don't pout." She teased, giving him a gentle tap on the cheek as she stood up. She turned around, pointing her perfectly formed ass towards the panting boy, bending over the bed as she placed her hands upon the soft surface for support.

"Wouldn't you r-rather… y'know?" Momo stuttered, grabbing the previously discarded condom and holding it out to the erect boy.

In response, he gently opened the condom, slipped it on – thanks to Midnight's sexual education classes, all the guys where educated on the proper way to put one on – before stepping forward, rubbing it against Momo's entrance briefly, feeling how wet she was and the occasional shudder before pushing forward.

Momo had heard all the rumours about how, on your first time, some pain is to be expected because of how the hymen breaks.

However, right now, all she could feel was an incredible wave of pleasure coursing throughout her entire body, all the way down to her toes.

Izuku's cock, from what she could feel, was tense and remained rock hard, but he dared not move. "If I move right now… I'll b-blow…" He muttered, his hands still firmly locked on her hips.

She nodded, needing a moment to adjust to what she'd just experienced from him simply putting it in. If that was what she could feel from just putting it in, how would the rest of this feel?

They stayed there for a moment, neither making eye contact as they adjusted to the intense wave of feelings spreading from their respective nether regions.

The first move was made by Momo, as she rolled her hips slightly on his, getting a feel for what was to come. This was enough as a signal to Izuku that she was fine, and wanted him to continue. He rocked his hips backwards, sliding his cock to the edge of her sopping flower before plunging in deep once again, a rhythm of movement beginning to form. Their skin slapped together, juices mixing as they became engrossed in the constant waves of euphoria that was radiating through their bodies.

Izuku leant forward, his arms reaching around Momo, one around her abdomen and the other around her chest, pulling himself towards her, resting his chin on her shoulder as he continued to slam his hips into hers. The position they were in, Momo realised, didn't offer much movement for him, but she realised it was likely that he simply wanted to be close to her. After all, they were both in very unfamiliar territory, so to speak, so perhaps some closeness was needed.

That, and Momo absolutely loved this side of him – she didn't see it often, but when he wanted to, Izuku was quite the cuddler. Evidently, that carried over to sexual acts too.

That wasn't to say that neither of them were feeling nothing from their current position. Momo could hear that, from Izuku's exasperated gasps, he was closing in on the edge of his release, and she knew that she wasn't far off either.

"H-hold on!" She struggled, begging for reprieve as Izuku slowed, lifting his head to look her in the eye. "I w-want…" She paused, feeling her face flush further, "…to be facing you when…" She panted, but didn't continue, she knew that her boyfriend would understand.

Nodding, he pulled his erect member out of her most precious place, allowing Momo to turn herself around and lay down on the bed, spreading her legs a little for him to enter once more. As he did so, she found she was unable to hold back her moans, lurching forward as she latched onto his back, their sweaty bodies pressed together as the previous rhythm was once again picked up.

Her grip upon his back tightened, her release being so, so close. All she needed was just that bit more…

Izuku pulled back, locking eyes with the euphoric girl briefly before crashing his lips onto hers, his tongue begging entry briefly before she granted it.

As their tongues played against one another, Momo's moans muffled by Izuku's lips, she began to rock her hips back and forth in rhythm with the hero in training, her clit rubbing against his pelvis causing her to see stars.

Izuku broke off the kiss, taking a breath. "I-I'm going to…!"

"Do it!" Momo shouted, never breaking eye contact.

Their shared release finally poured over, Momo finding herself going limp once again, but this time supported by both the bed and her lover, as her vision blurred from the sheer size of her release, her sopping flower trembling as it remained wrapped around Izuku's currently ejaculating cock. Izuku himself, in the midst of his release, remained stiff and tense, up until his shots within the condom finally came to an end, causing him to begin to go limp. He pulled out and rolled over, landing on the edge of the bed so as to not land directly on top of his girlfriend.

As both of them came back to reality, Momo began attempting to sit up, but found herself unable to. It felt as though she'd done about 500 sit ups, or she'd suffered through that awful training camp that they visited in the summer of their first year in UA. She collapsed backwards onto the soft bedding, her limp muscles trying desperately to recover their former grace.

Feeling herself being lifted up gently under her arms, Momo wrenched her eyes open to see that Izuku had clearly recovered before her, and was currently lifting her towards the top of the bed, where her nest of pillows lay. Using his foot, he pushed aside the dishevelled duvet, lay down and pulled Momo on top of him, taking one hand to pull the duvet and the other to wrap around her waist, pulling her into a tender hug.

"You dork…" She mumbled, still catching her breath.

He smiled, planting a small kiss on top of her head, his cheeks somehow still red at doing something so small as a kiss, especially after what they'd just done together.

"I love you." Izuku spoke suddenly, causing Momo's eyes to widen. "And… happy birthday, Momo." His tone was genuine as he spoke softly.

She found her eyes watering at his proclamation, her smile growing widely as she buried her face in the nook of his neck, planting kiss after kiss.

"I love you too." She replied, planting another kiss as she snuggled into his chest – she figured she could afford to have a lie in with her boyfriend on her birthday, after all.

This ended up being a fair bit longer than I intended, but I had a lot of fun writing it!

That's all for now! Don't forget to review!