夢掴むために

Katsuki kept from glancing at the door only through sheer determination, despite the worry gnawing at his guts. Even sensei was here to start class where the fuck was that nerd-

The door to the classroom opens revealing not freckled cheeks and a nervous smile he wanted expected but a nervous Mineta Minoru. The student shouldn’t even be there, having transferred into the management department at the end of their second year.

Aizawa-sensei, can I borrow you and Yaoyorozu for a bit?

The blond could see a crease forming between their teacher’s brows but he and the vice pres get up and leave the room and the door closes behind them with a definitive click. The rest of the class starts talking, sure that Deku – the only one missing before Mineta’s surprise appearance – is the root of it all.

There’s raised but indistinct voices on the other side, which gets the rest of the class to quiet down, eyes drawn to Jirou and Shouji who could probably hear what’s going on. Their reactions – Shouji face palming and Jirou with her head down and her body shaking with either crying or laughter – does not bode well.

Aizawa returns, looking frustrated like always, with Mineta in tow, who was quirking a nervous smile towards his former class. And then Yaoyorozu comes back, cheeks dusted a rosy pink, with two other girls, a twiggy underclassmen Katsuki has never seen before and a short and halfway familiar green haired figure trailing behind her in a mussed up girls uniform.

To Katsuki, he knows exactly who it is, palms sparking. Deku, the fuck –

Deku looks up, face still slightly rounded, eyes mostly the same, and gives 3A his (her?) signature nervous smile. So, funny story-

The class is an explosion, of voices and not his quirk this time.

---

It goes like this: Deku had a meeting with Hatsume and Mineta about something (It’s a surprise, Kacchan!) when a first year management student came in with questions. The girl was startled by one of Zoom Eye’s machines and ended up activating her quirk, switching Deku’s and Hatsume’s genders.

Well, at least it’s temporary, I’ll be back to my normal self in a week or so, was Deku’s sheepish conclusion.

Katsuki’s not enthused to see Mineta looking up at Deku’s… um, sizeable assets. Nor was he on board with the fact that Yaoyorozu had to help his Deku put on a bra since she had to create one to fit him. Her? Fuck, shitty Deku, making things harder than they really have to be.

As third years, they don’t actually need to come into school all the time, so long as they stay on top of their classes. It wasn’t surprising that the moment that Aizawa ends homeroom, everyone gets up to go, crowding Deku before Katsuki could grab the nerd, making him stew on the sidelines.

That’s fine, even as he seethes at watching Kirishima and Discount Dedenne fawn over his Izuku’s form, even as Jirou and Yaoyorozu and Asui comment over how Izuku’s face didn’t change much but other parts (namely his chest) did.

Midoriya-chan, you’re one light duty while you’re like this right? Asui asks, large eyes gleaming as she looks at the other green hair student.

Izuku shakes his head in the negative. I already talked to senpai and he told me I can come to the office and train and do paperwork, there’s a groan from the rest of the peanut gallery at the thought of being stuck doing paperwork, but not patrols. There doesn’t seem to be a good reason to modify my hero suit to accommodate uh… Deku looks down at his chest before motioning towards his breasts, blushing. It seems silly to go through all that when this is only going to be temporary.

The (future) rainy day hero nods sagely. Then we should take your time off to go shopping and get you clothes that fit.

What? Why?

You can’t go around in your regular clothes, they can’t fit you. And your breasts are too big for any of us to lend you shirts or bras without it being uncomfortable for you. We’ll make it a girl’s day of it, she says plainly.

But I’m not a girl!

Right now, you have the body of one so you might as well go with it.

So it’s decided – parts of the class were calling out on their internships to go shopping. Katsuki rolls his eyes, not willing to waste precious time training to be number one to stand around the mall with everyone else, but he did pull Round Face to him before he headed to his own internship, handing her his credit card. Make sure Deku gets something cute, got it?

Uraraka, being the only classmate who actually knew he and Deku are together, gives a laugh. Of course, of course. I’ll even take pictures to send for your approval?the brunette teases.

Katsuki grunts, but he’s sure Uraraka can see the faint blush dusting his cheeks. And buy something for yourself so you and Shitty Hair can finally have a nice night out for once! That’s the closest he can get to a thank you. But don’t drain all my fucking cash.

The young woman’s laughter follows after him, even as he leaves to head to his mentor’s office. She keeps her promise though, as proven by a candid shot Uraraka must have taken while the nerd was changing, a freckled and scarred backside encased in All Might themed lingerie. Katsuki doesn’t even mind that she spent more than he expected when she hands him a bag full of more hero themed underwear, sized in a way that Deku could wear once he’s back to his regular body.

---

The next week goes by quickly – Katsuki’s busy working with Miruko and juggling schoolwork while Deku has taken his time off active duty to train, getting used to a whole new center of gravity, and working ahead in class so when he’s cleared, he can compensate for the missing field work. They meet up once in those seven days for a quick blowjob between classes, but the moment Katsuki tries to return the favor by fingering the nerd open, Deku bolts with a stammered excuse and he doesn’t see his boyfriend the rest of the day.

In all actuality, they’ve gone longer without being intimate – weeks of being too busy and tired for anything more than kisses and spooning, a really bad month and a half where they were alternating between who had life threatening injuries that made any physical activity, let alone sex, a poor idea, the three months during second year where they were working on opposite ends of Japan…

But they’re both here now, both relatively healthy, and there’s absolutely no reason a change in anatomy should keep them from fucking.

It’s a weekend and they’re both free and Katsuki is not going to let Deku get away without having sex in his female body. Considering how his boyfriend loves experimenting, Katsuki is honestly surprised that Izuku hadn’t come to him sooner. The text he sends is pretty self explanatory:

Kirishima is gone for the weekend with Uraraka. Let’s take advantage.

What he gets back in response is… unexpected, to stay the least.

No.

What the fuck nerd? With a growl, Katsuki sends another text.

Why not?

He sees Deku is typing and keeps his eyes on the screen until his response pops up.

Because it’s weird, I’m not a guy, you said point blank you were gay and not into women.

Of all the… The noise Katsuki makes is probably inhuman but it’s all he can do to keep from throwing his phone at his wall and stalking out to find Izuku himself. He takes great pains to spell it out for the nerd.

Deku you dumb fuck, I’m not into women. I’m not into guys. I’m fucking into YOU.

There’s a worryingly long period with no response, not even the ellipses to know that Izuku is trying to formulate one. He’s just about to try and find the other student when there’s a timid, familiar knock at his door. Katsuki gets up and opens to reveal Deku standing there in a thin dress, knee socks, and slippers, looking nervous.

Hi Kacchan, Deku murmurs, looking shyly up at Katsuki from beneath his eyelashes.

Katsuki opens the door more to let his boyfriend in, and he has the childish urge to snap the strap of the nerd’s bra as he passes by. Because Katsuki can allow himself childish whims while in the safety of his own room, he does so, and smirks at the surprised yelp Deku makes. Haa, seems like you sounded like a girl all along! he jokes.

The look Izuku gives him is as murderous as he can get (which isn’t very, if Katsuki was perfectly honest) before pouting. Kacchan was being nice over SMS but if he’s just going to be a bully, I can leave.

The door closes and locks it, as if showing Deku he can’t just go now that he’s here with him. Not so fast nerd; you aren’t leaving until you’re entirely satisfied. With a smirk playing at his lips, Katsuki stalks towards Izuku noticing that his boyfriend was shorter as a girl, tuffs of green curls barely reaching his chin. Looming over Deku is familiar and while he still feels the urge to bully him, it’s not the same as four years ago. Katsuki pushes Izuku towards the bed and the nerd follows the motion easily, falling back on his back. The blond follows, hovering; he can feel Izuku’s breasts pressing against his chest, he chuckles at Izuku’s squeal as he leans down to press a kiss against his lips.

Ka-kacchan, please, Izuku’s voice is breathy against his lips. He smirks before pulling away to watch Izuku come undone in a different form. Katsuki’s hand roams, sliding up muscled thighs and inching higher and higher. Izuku tries to close his legs but Katsuki’s between them, leans back to help spread them higher open as he pushes up the nerd’s cute sundress. There’s just a peek of black and orange that makes Katsuki pause, pull back a bit to look Izuku in the eye before hooking his questing fingers around the hidden panties, pulling them down with a slow, sensual motion.

When they’re far enough down, Katsuki gives a whistle of appreciation at the pair of underwear definitely modeled after his hero costume. The fuck did you find these nerd? he asks, even as he pulls the off completely, throwing them aside. Next off are Katsuki’s own sweats and tanktop, tossed aside just as carelessly. He’s focused and intense, barely listening to Izuku’s stammering explanation about Yaoyorozu making him clothes based on their classmates, much more intent on relieving Deku of the dress. Maybe if he paid more attention, Katsuki wouldn’t have been so surprised at the matching bra. It’s a dainty thing and Katsuki has the conflicting urges to blast it up, see starburst burns between the tatters on Deku, or to keep it on while he fucks Deku into the bed.

Instead, he’s urging Izuku out of the dress, insistent fingers tugging to get the garment over his head. There’s a growled order to unhook the bra before Katsuki situates himself lower. From below the chest, Deku looks almost the same, toned abs, just a slightly slimmer waist with a larger flair to them, same neat strip of curls above Izuku’s most intimate place. The biggest difference is what the curls lead down to, instead of a palmful of cock that Katsuki loves teasing, Izuku’s pussy is dark and slick with arousal. He glides his hand against Deku’s cunt and Izuku shudders against him.

Don’t tell me you of all people didn’t experiment, Katsuki teases, carefully teasing a finger inside of Izuku. It’s different, strange and familiar all at once; Katsuki doesn’t have to lube up and Izuku’s insides are slick with arousal. Katsuki fingers Izuku, hears the other moan and twitch beneath him, asking, begging him for more and he’s more than happy to oblige. One becomes two and then three fingers, scissoring and curling against Izuku, relishing in his boyfriend’s reactions, his pleas for more, more.

Let it be known that Katsuki is not a saint, it’s impossible to deny how hot he finds Izuku begging to take his cock. He doesn’t linger with prepping him more, just pulls away (No, why, Kacchan~ I need you inside me!) long enough to grab the lube under his pillow, not even bothering to let it warm up before he’s coating himself. It doesn’t take any more insistence before Katsuki pushes in, hears the catch in Izuku’s throat that might be a sob or a prayer, asking for more.

It’s like the clock rewinds and they’re sixteen again, fumbling during house arrests and learning each other’s bodies hands on. The blond refuses to move until he feels Izuku stop tensing around him, waits until Izuku wraps his legs and arms around Katsuki, a soft and warm vice around him. Kacchan, I’m so full, it feels good. Katsuki twitches inside, eliciting a groan. Move Kacchan, you can fuck me!

Katsuki doesn’t need to be told twice, setting a frenzied pace, fucking Deku into his bed hard enough to make the springs groan. It’s almost a pity that he has to keep himself held up if he wants to see the pleasure on Deku’s face, the way his eyes roll back as Katsuki’s cock sinks in deep inside.

The arms around him clutch tighter, blunt fingernails digging in and leaving faint welts Izuku begs, Cum inside, Kacchan cum inside, give me a baby, make me pregnant!

Some 20th century psychologist said humans were animals and, like animals, they were driven by four basic things: fighting, fleeing, feeding and fucking. Maybe it was that primal, ingrain need, the thought that he could leave such a permanent mark in Izuku, that has Katsuki coming so hard, he thought he saw stars. Izuku clenches around him, wringing him as much as he can. Katsuki could feel him fill Izuku up so much that he knows that soon as he pulls out, it would start dribbling out of his pussy.

The fuck was that Deku? Katsuki asks, coming down from the rush of orgasm. He’s still leaning over Izuku, giving him the perfect view of the reddening face.

Izuku covers his face with his arms, attempting to pull away only to realize Katsuki’s cock is still inside and with the blond still over and around him, there’s no where for him to go. I don’t know what came over me, he mumbles, and it’s only years of knowing Izuku that allows Katsuki to hear and understand. It just seemed so right in the moment, I just wanted you to knock me up or something.

Heh, shitty nerd, if you want to get knocked up, I’ll just keep going, now won’t I?

---

Fuck, I think I’m gonna miss this, Katsuki mumbles, nuzzling into Deku, face pressed against the swell of Izuku’s breasts, spent cock lying against Izuku’s thighs.

What, me having a vagina? Izuku teases, but there’s no heat in it, scarred fingers running through the blond’s hair. Or filling me with so much cum that I’ll pop out a few kids for you?

Naw, I’ve tried it and it’s all right but your ass is too fucking good to give up. He playfully squeezes at one of Izuku’s large breasts, I suddenly know why Pikachu and the rest are so obsessed with these. Your tits feel nice. Katsuki chuckles, even as Izuku squeaks and pulls at his hair. He nuzzles into his breasts with a sigh in response, and Izuku can feel his steady heartbeat against his lower abdomen. In a fleeting thought before he goes to sleep, Izuku wonders what it would feel like to have that lazy heartbeat inside, a constant reminder of the new life they create together.

---

Years later, Deku, rising star of the heroic circuit, laughs at his former teacher. Present Mic, now retired from active service and devoting his time to host his radio show, tosses the younger hero a teasing look. If you check out our website and type in Highschool Deku, you should now see a collection of photographs of Mr Number 10’s years at Yuuei, including one eventual week he spent as a she! Present Mic turn the tablet he had in front of him to show off a whole slideshow worth of pictures of Izuku as a girl – from candid shots around campus, to snippets of videos that was recorded during his one and only shopping trip as a female.

That startles a laugh out of Izuku, Wow, I can’t believe you were able to find so many pictures! He’s scrolling through the gallery, a smile on his face at the memories.

You make a very pretty girl, I must admit. You distracted so many of your classmates that week, I’m just glad that this happened in third year and not first.

Izuku hums in thought, First year would have been awful yeah, but at least as a third year I had a license and an internship that kept me busy. I also learned a lot about female pro heroes! Honestly, I knew that some of them were more concerned about their costumes, but the amount of work they have to do to straddle the line between function and fashion, of having to do their work around cramps and other things like that, well, anyone who disparages a pro just because of their gender is so wrong! So many pro heroes have above average bust sizes and that come with huge health complications on top of the everyday risks of heroic work! Any haters should spend a month as the opposite gender, see how hard they work to excel and save people even when they’re sanctimonious bas-

Whoa, slow down there Deku, Present Mic laughs as he holds up a hand to cut Izuku’s mumbling off before he can say something that wasn’t quite family friendly. We love having you on the Pro Hero Hour, but we’ve told you plenty of times, the mic can’t keep up with your mumble storms!

Izuku chuckles, embarrassed, and allows Present Mic to steer the conversation to other topics, mostly centered around his time as a U.A. student.

Behind the table he sits at, Izuku places a hand against his lower stomach, lost in the memory of being so full, of his desire to become a mother.

Maybe someday, when he’s ready to retire, to leave heroics to the new generation, he might consider getting pregnant for real. There are plenty of quirks out there, some more permanent, that would let him be a mother for real this time. And the thought of having Kacchan’s baby makes happiness bubble inside of him. Yeah, maybe in a few years…