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Denki stares at the nurse and Katsuki in pure shock.
"I'm so sorry, I'm going to need you to run that by me again," says Denki as he shakes his head, trying to clear whatever mess he just heard so he can be sure he hears correctly this time.
"You are Deku's Emergency Contact when it comes to quirk mishaps regarding his secondary gender," explains the Nurse gently as she tilts her head to the side, seeming confused by Denki's confusion.
"Yeah, yeah, I got that. I consented to that during our first year as Pros," says Denki with a wave of his hand before he turns to Katsuki with his brows furrowed. "Dude, did she— Deku got hit with a mating scent quirk?"
"Yes, dumbass, he did. And your scent is the one he fuckin' smelled. Knew it the minute he caught it and made me give him a damn shot to knock his ass out mid flight," replies Katsuki with an eye roll, annoyance written all over his face.
"You mean to tell me that the Omega that I'm in love with actually loves me back? Is that where we're going with this? It's the only thing that makes sense because Mated's quirk only sets you up with the one that you and your omega loves. But that doesn't make any fucking sense!" Denki goes on a tangent before he can even really think it through, panic surging through his hands and making tiny sparks of electricity pop off his fingertips.
"Sparky, I need you to take a goddamn breath because Deku is in there, in fucking pain, during a heat that won't be solved until you fuck him. Not something I want to fucking think about, but it's the damn truth. Are you gonna be able to do this or fucking not?" asks Katsuki harshly as he slams his hands on Denki's shoulders and yanks him around so their eyes can meet, shaking him twice to get the muttering to stop.
"I— Yes, of course I can do it. I just— I don't know what the after is going to look like," whispers Denki nervously as he looks into one of his best friend's eyes. "Last time it was one knot and he was good, but this— this is going to be a full heat, and I— I don't know what's going to happen when the quirk finally runs its course."
"What's going to happen is the full heat won't hit until your first knot which means his ass is in there, lucid as fuck, and you're going to have a brief but genuine conversation before you fuck him until he's okay again. And while you do that, my mate and I are going to go get that dumbass and put him behind bars for quirk use. That sound good?" Katsuki's tone is definitive, but his head tilts with the question anyway.
"Okay, but he's going to need katsudon, lots of it, for once his heat hits because that's also his favorite thing to eat during his heats," replies Denki softly before he ducks around Katsuki, takes the clipboard and starts walking. "Go get that idiot, I've got Zu!"
"Chargebolt, you'll need to sign that last page, then I can take you—" The nurse tries to speak up, but Denki pulls out the pen and signs before dropping the clipboard at the desk as they pass the nurse's station.
"Got it, make sure no one can see into the room, and any deliveries need to be done by a beta, preferably Froppy," replies Denki over his shoulder before he takes off down the hall towards the heat ward.
The nurse follows after him, but Denki doesn't pay her much mind as he finds room 347. He takes a deep breath before he tugs the room open, and makes his way inside.
"Zuku?" Denki's voice is gentle as his eyes find no Omega, but then his eyes lock on the viewing room to see a whole gaggle of nurses being reprimanded and shoved out of view. "Zu, they're gone now. You wanna come out and let me make sure that any injuries you had were properly taken care of?"
"I— Are they really gone?"
Izuku's voice is so small, that Denki's anger lashes through his hands with mini electric whips before he takes a deep breath to reign himself in.
"Yes, Darling Zu, they're all gone. You can check, if you want to," offers Denki gently as his eyes zero in on the closet that has nesting materials, and sure enough, green slowly pops out as Izuku's head appears momentarily to make sure the viewing room is actually empty. "They shut the viewing room down completely, see? I told them to make sure no one could see us, and that a beta would bring anything that needs to come in for you. I've got you, Zu, I promise. Now, can I see you?"
Izuku doesn't say anything when their eyes meet, he just slowly slips his way out of the closet, and Denki doesn't know how this giant man stuffed his way inside that small ass closet. Izuku is a whole three inches taller than him, and he's 5'7 okay, but even then, the taller man is also buffer than him. Denki stayed lean, but Izuku bulked up good. All muscle that Denki wants to worship because holy fuck is he a god.
"You— They told you everything?" asks Izuku timidly as he stands in the middle of the room.
"Yeah, Zu, they told me everything. We need to talk about that, for sure, but can I check you over while we do?" asks Denki gently as he tilts his head to the side while looking at the taller man.
"They already did," mutters Izuku with an eye roll, though he goes over to the bed and sitting down. "But of course you can check me over, and you can ask whatever questions you have."
"Well, my first question is, did you hide anything from the nurses or Kats?" asks Denki as he walks over to him, letting his hands rest on either side of those thick thighs while he looks into green eyes.
"Didn't hide anything," grumbles Izuku as he pouts down at him in response to the accusation.
"Okay, I'm still going to check you over, just to be sure," murmurs Denki with an amused grin before he starts his routine check over. He does these every time Izuku comes to their shared apartment, he can't help it, and in his defense, the taller man does the same thing to him. "I guess my next question is more of a confession. I— uh— I have been in love with you for a while now, Izuku, so what does this whole situation mean for after?"
"Well, I— ack," groans Izuku as his hands come up to clutch at his stomach, green eyes clenching shut.
"Breathe, Zu," whispers Denki as he tugs off his scent patches and spreads his scent as best he can to help calm the cramps.
"Hate heats," whines Izuku as he lets his head fall forward to rest against Denki's shoulder. His vanilla ice cream by the ocean scent is acrid with his pain, and Denki pushes more of his scent out, littering it with calm and reassurance in hopes it would help. "I want— I want this situation to mean that you and I are going to court and mate eventually because I— Denki, I've been in love with you for a— fuck— a while now too, since UA actually."
"Oh, Zu," murmurs Denki as he hugs Izuku close, nuzzling into his gland for a moment before pulling his head back and rubbing his hands up and down the taller man's back. "I will mate you whenever you're ready, Darling. We can discuss courtship and mating as soon as your heat is over, I promise. But before we do anything, there's one thing I need to know before we get you comfortable. Do you want me to claim you during this?"
"I wouldn't be against a claiming bite, if you're okay with it? But you don't have to claim me," replies Izuku shyly as he looks down at Denki.
"Oh, I'm definitely claiming you if you're okay with it, but only if you consent to it," murmurs Denki sweetly, showing off his fangs that have been dropped since he stepped into the room.
He has way too much practice with speaking normally around his fangs when he's in the same vicinity as Izuku.
"Then please do," says Izuku as he leans in and brushes their noses together. "I want to be yours, and I want everyone to know."
"You'll have to claim me back then, so it won't close," replies Denki as he nuzzles their noses together, tipping his head back so their lips brush on his last word.
"I will," murmurs Izuku before he presses forward, needy and wanting, into the kiss.
Denki lets Izuku kiss him, he kisses back, but when Izuku nips at his bottom lip and his lips part on a sigh, he takes control.
Denki licks into Izuku's mouth, their tongues rubbing gently before he licks over his teeth, learning this sweet mouth while Izuku goes almost limp in his hold with a whimper. He nips at a bottom lip, sucking at the tongue that follows his back into his own mouth, and enjoying the way those thick thighs squeeze his hips.
"Alpha," whines Izuku as he tilts his head back, letting Denki trail kisses down to his neck where he licks over that sweet scent gland before pulling away as his hands find that gray tee. "Want you, Alpha! Want you so much, Denki!"
Denki knows someone changed him, probably Katsuki, while he was out because Izuku in heat will shred his hero costume to pieces.
He's done it twice.
In the last six months alone.
"Let me take this off you, wanna kiss every scar, Zu," murmurs Denki as he tugs gently at the tee before slowly lifting it up, fingers sliding over warm skin as he helps Izuku take it off.
"Fair is fair, lightning bug," huffs Izuku as his hands drop, fingers tugging gently at Denki's sweatshirt.
"Of course, Zu," says Denki with a soft chuckle before tugging off not only his sweatshirt but also his plain white tee. "Now lay back and let me love on you a little bit. Wanna take my time for a minute before I give you the knot that you need to push your heat into action."
"Alpha," huffs Izuku as he pouts at Denki while he lays back on the bed. "Want you!"
"You've got me, Omega," replies Denki gently as he climbs onto the bed, settling between Izuku's thighs as he presses a gentle kiss to the top of the scar that stretches diagonally from his right shoulder to the middle of abdomen. It's a spiderweb of scars that include some older ones from when they fought in the war. "You've got me for as long as you want in anyway that you want, but first I want to kiss your scars. Can I do that, Darling?"
"You can, but I want your knot," whines Izuku as he pouts down at Denki who is still just trailing kisses, gentle, wet, across these scars that are pale and almost indiscernible if it weren't for his previous knowledge of them. "Want your knot now, Alpha! You always love on my scars!"
"I always trace them with my fingertips, when you want cuddles, or I want cuddles, but I don't always trace them with kisses, loving every inch of your skin, not just your scars," replies Denki in amusement as he kisses his way up from Izuku's sternum to his lips. "I'll give you my knot, Darling Omega, but you have to get these shorts and your boxers off for me while I get myself undressed."
Denki climbs off the bed after giving him a gentle kiss, and he kicks off his jeans while Izuku throws his pants and yellow boxers over his head. Then Izuku makes grabby hands, and Denki snorts before climbing back on the bed and kissing his Omega.
Denki licks his way into Izuku's mouth while their cocks brush as one of his hands slides down, down, down until fingers reach slick cheeks. Izuku whines into the kiss as he threads his fingers through blonde strands as Denki's fingers find the slick, leaking hole, and slowly traces it as it clenches.
Denki has tasted that slick, and he aches to do it again, but Izuku needs his heat to start so it can run through the four days it usually does. The sooner it's started, the sooner he gets through it and can go back to the apartment like he no doubt wants to.
"Fuck, please!" whines Izuku as he tilts his head back when Denki slips one finger in, easier than he'd expected despite the slick dripping over his skin.
"I've got you, Darling," murmurs Denki as he slowly fucks his finger in and out before adding a second, then a third because Izuku reached down to make him add it. "Fuck, you really want me to fuck you through this, huh, Darling? Making me give you a third finger already, when you're this tight and soft inside, you must be craving it more than I thought."
"Need my Alpha, needed my alpha for years!" huffs Izuku as he rocks his hips to take those fingers a bit faster. "Come on, Denki, please!"
"Okay, Darling, let me make sure you're properly stretched first, just a little bit more," murmurs Denki as he starts fucking him on his fingers properly, stretching him out to make sure he'll fit because he might not be thick, but he is long, and his knot is… sizable.
"Now, Alpha, now!" demands Izuku as he rolls his hips down onto the fingers, his cock bobbing untouched.
"Mmm, how did you let me ignore this pretty cock?" asks Denki softly before he wraps his other hand around Izuku and starts stroking in time with his thrusting fingers, grinning when Izuku's cock leaks heavily over his fingers. "Come on, Darling, can you cum for me one time before I fuck you? Wanna taste you, come on."
Denki gets his lips around the tip of Izuku's cock and he cums, moaning Denki's name loudly as he bucks up.
"Mmm," groans Denki as he swallows the slightly bitter cum. "My omega tastes good. Now, are you ready for my cock?"
"Been ready, Alpha," whines Izuku as he rocks back, fingers digging into the pillow underneath him. "Gimme your cock!"
"Okay, Darling," breathes Denki as he walks forward on his knees, stroking his own cock momentarily before he lets it fall against Izuku's wiggling ass. He teases his rim with his cockhead gently before carefully pushing the tip in. "Fuck, so tight still, how the fuck, Darling?"
"Only use toys now," grumbles Izuku as he pushes back on that cock, only for it to pop out. "No! Don't tease me! Fill me full!"
"Hold on, Darling, gotta try not to cum. You feel so fuckin' good," groans Denki as he smacks his cock against that slick rim.
"Come on, Alpha, give me your cock!" whines Izuku as he rocks his hips up a few times.
"I know, Darling," murmurs Denki as he settles his hands on Izuku's hips and slips his hips back before guiding his cock back in. "Alright, slowly baby. We go slow."
Izuku twists around and full-on pouts at him as he grips his hips harshly to keep him from bucking straight back to take him in all at once. Denki just smirks before rocking forward, slipping in a couple inches with a groan that matches Izuku's drawn out moan.
"More, Alpha," huffs Izuku as he tries to rock back again, this time managing to take another inch before Denki gets a stiff hold and stops him. "Denki! Want you! Why are you stopping me?"
"Because we're supposed to be doing this slowly, Darling," replies Denki in amusement as he adjusts forward to slide another inch inside to quiet Izuku's grumbling. "Almost there, baby, but we need to go slow because you don't want to me to cum before you cum a second time, and neither do I. Wanna feel you cum around my knot, Darling Omega."
"Fuck please!" whimpers Izuku as Denki slowly rocks back and forth, shallowly thrusting until he finally slides all the way in. "Yes, Alpha! Yes! Fuck me, please!"
Izuku clenches down around his cock, and Denki groans, "Fuck, beautiful omega has such a tight hole. Gonna milk me so good, Darling."
"Come on, come on, c'mon!" groans Izuku as he slides forward and rocks back, fucking himself in his impatience.
"Fuck, Zu, fuck yourself back on my cock, Darling," moans Denki as he scoots back and watches Izuku back his ass up on him, taking him in tightly and sliding off to the tip before fucking back a little bit harder each time. "Fuck yes, taking my cock so good, Darling."
"So big, Alpha, fill me so good," moans Izuku as he fucks himself on Denki's cock, pleasure echoing out of him. "Fuck me, please!"
"Alright, Omega, let me take care of you," says Denki gently before he leans forward, placing a hand in the middle of Izuku's back and pressing down gently until the Omega arches lays his head down, twisted to the side. "Gonna fill you full, knot this pretty little hole and fill you with my cum."
"Do it, Alpha! Please!" whimpers Izuku as Denki pulls out to the tip before thrusting in and starting a brutal pace, giving the Omega everything that he wants. "Fuck yes, Alpha! Like that! Keep fucking me like that! So fucking good! I'm so close, Denks!"
"Fuck, you're gonna make me cum," groans Denki before his hand slides around to find Izuku's cock, wrapping his hand tight and stroking in time with his thrusts. "Need to feel you cum on my cock, Darling. Come on, you know you want to."
"Gonna cum, holy fuck!" yelps Izuku as Denki thrusts a little bit harder, aiming for the spot that makes him clench harshly around him. "Yes, fuck yes, Denki!"
Denki has to fuck Izuku through his orgasm because it's right there, his knot filling up and catching on his rim as he does. When it finally catches, Izuku is lying limply against the bed, and Denki's mouthing at his neck gland.
"Izuku, fuck!" groans Denki harshly as his knot locks him in, Izuku squeezing around him as pleasure swims through him so harshly that he blacks out for a moment as he cums.
"Fuck, so warm," moans Izuku weakly as he squeezes around the thick knot plugging him full. "So full, Alpha, thank you. Feel so good."
"Fuck, best Omega, taking all of me like that," whispers Denki as he nuzzles against Izuku's scent gland.
"Best Alpha," whispers Izuku as he twists around to kiss Denki, a gentle, open-mouth kiss. "Feel so good, fucked me so good."
"Glad to hear it," murmurs Denki as he rolls them carefully onto their side, curling around him with a weak groan when Izuku clenches around his knot again. "Tired, Omega?"
"Yeah, a little bit," grumbles Izuku as he tugs Denki's wrist up to his nose and buries himself in Denki's scent. "Sleep, Alpha."
"Will do, Omega," murmurs Denki gently as he buries his nose in Izuku's neck.
The next few days are filled with fucking, Izuku rides Denki twice, but Denki also eats Izuku out three times until the omega uses blackwhip to flip them around so he can get the knot he was begging for. Their scents saturate the room so heavily that nobody even enters it anymore, they send everything in through a vent that Denki hadn't realized was in the ceiling until Froppy used it to drop down three meals.
Denki bites Izuku's neck gland, claiming him deeply at the same time that his neck gland is bitten on the last day of Izuku's heat.
When he wakes up, Izuku is staring at him with bright emerald, green eyes, and his fingers are tracing the lightly throbbing claiming bite.
"I already told the nurse that my heat was over and got my medicine to make sure everything is good," murmurs Izuku shyly as he looks down at the bite as his fingers continue to trace over it. "They're going to come in here in an hour and turn the neutralizers on and dismiss us, but we're free to go whenever you're ready."
"Sounds good," says Denki through a yawn as he leans over and presses a kiss to Izuku's cheek. "We'll probably have a fully stocked fridge waiting for us and the report on that idiot sitting on the coffee table."
"Sounds like we know how we're spending the rest of our day. I need a bath though," says Izuku with a sigh as he leans down to press a gentle kiss to Denki's lips, making him grin when the taller man pulls away. "I love you, Denki."
"I love you too, Izuku," replies Denki softly as he leans up to kiss him back. "I'll run your bath for you while you pick out your clothes."
"Sounds perfect," sighs Izuku wistfully as he stares down at Denki softly.
"Yeah, it does. You ready to get outta here and get in that bath?" asks Denki with a grin as he reaches up and taps Izuku's nose, snorting when the freckled nose scrunches up under his touch.
"Let's go, lightning bug," murmurs Izuku with a grin as he stands and slides off the bed.
"Did you dress me?" asks Denki as he stands as well to find himself fully clothed.
"Yeah, figured we'd be ready to go as soon as we both woke up. So, I got you dressed before I called for the nurse about my heat being over," replies Izuku nervously as he scratches at his neck and smacks the scent neutralizer spray button.
"You're the best," says Denki happily as he walks over and latches himself onto Izuku's arm. "Let's get outta here."
Izuku purrs happily before heading out, and they grab some scent patches on their way. Denki has claimed his omega, and he can't wait to court, and mate, the beautiful man soon enough.