Katsumi snuffled, making noise for the first time since the class period had started. Without looking up from his notes, Katsuki started to purr low in his chest. He reached between his body and the sling he kept her in to open his shirt enough to tuck her head against his chest.
Immediately, she latched on. He only stiffened for a moment at the sharp pain that reawakened from his abused nipples before settling into the familiar rush of endorphins. Katsumi didn't always want to eat when she woke up, but they'd gotten her on a pretty good schedule. Katsuki also seemed to possess a preternatural understanding of what she wanted before she started to cry, which helped because he could barely stand the crying. He knew that before getting pregnant, and it had not changed. If she was fussy, Izuku usually took her without comment to find a place to soothe her.
Katsuki studiously ignored the way Jirou was stared across the short space between them in fascination.
Katsumi had started growing quickly after her birth. Already, she was six pounds and had sprouted long limbs. She looked like a fucking muppet, but Izuku refused to let him dress her as Kermit the Frog. Not that he still didn't when he got together with Kirishima and Ochako. Mina had been exiled from baby time after she couldn't control her quirk in the baby's presence the first time.
She was still a far cry from how big most pups were even born at, but she was growing. That was the biggest thing. Her small size and uncooperative limbs seemed to be the bane of her existence and the predominant reason for her fussy crying. When she fussed and cried. So far, she'd been a pretty quiet baby, and Katsuki couldn't have been more thankful.
All of her extra energy that didn't go to crying or growing limbs twice her size seemingly went into mass producing hair just like her damn father. While her eyes were still the vibrant red of Katsuki's, her hair had become a bushel of green curls that he just knew he'd be fighting for the rest of his natural life.
Ten minutes later, Aizawa snapped his book closed at the front of the class. "Take fifteen. Midnight will be here soon." Without preamble, he strode from the room to leave his rowdy students to their chaos.
Katsuki groaned, stretching one arm over his head and then the other to keep Katsumi still. In her sling, Katsumi's mouth pulled away. She started to whine against his skin. Fishing her out to wiggle his fingers in her face, he said without looking, "Deku, can you take Katsumi? I need to piss."
Izuku swooped in beside him, pressing a kiss to Katsuki's temple as he scooped up the baby. She was dressed in an All Might onesie that was still a little big on her, but Katsuki had modified it in the important places. "Of course I can. How's my beautiful baby girl doing?" he cooed, pressing kisses all over her face and stomach as she giggled.
Katsuki stood, stretching again before returning the kiss. "She probably needs a change before Midnight gets here. I didn't change her before this period. She might be dry, but you should check." He shoved his hands deep into his pockets to keep from reaching for her again. He trusted Izuku implicitly with Katsumi, but there was always a bit of anxiety when he let her go. Izuku wasn't the problem in this equation, it was the rest of the idiots who got up to coo at the little green haired baby. If he didn't have to pee, he wouldn't leave their sides for an instant, but if he were actually being honest, he needed a moment to himself. "You know, before she starts screaming. She needs to be burped too. Give her five more minutes, and then check if she needs a change."
Before he left, he turned to Kirishima. "Don't let Mineta anywhere near them. If I find him within ten feet of her again, I will string him up by his ankles at the front gate."
Looking aggrieved, but in complete agreement, Kirishima nodded.
Izuku didn't look up at he nodded as well, spending the time blowing a raspberry against her cheek to make her giggle again. "I can do that," he said before exclaiming, "You've been eating so much, but it's all going to your hair!"
Turning, Katsuki quickly left the room, ignoring the urge to snap the necks of everyone that crowded around Izuku in his wake. He'd just have to trust Kirishima -which he also did- to keep them mostly at bay.
Instead of taking a urinal, Katsuki locked himself in a stall. When he was done, he just pressed his back to the door. He scrubbed at his eyes with the back of his wrists. He was tired, so fucking tired.
Between class, homework, training and the baby, it felt like he never slept. Which was a lie. Katsumi never cried at night. Both his and Izuku's bodies were set on a timer now, and rarely did they not wake up before she even began to murmur. So, they never got the jerk of surprise from being woken by a cry. Waking up every couple of hours was still waking up every couple of hours though.
So far, Katsuki had only woken up three times to find Katsumi nursing while Izuku dosed with the two of them pulled to his chest, the baby cradled between them. And there had only been four times when Izuku didn't even twitch a muscle when Katsuki rose to get her from her crib.
Still, he was tired. He knew he would be. That was at least something that had been consistent in his research. He had been tired for ten straight months, and he was likely to be until Katsumi could at least make a sandwich on her own.
With a heavy sigh, he moved to push himself away from the door, but stopped when he heard the bathroom door open again.
"Yo, like what the fuck is up with that?" a voice asked, unfamiliar, but most voices were. He didn't usually pay enough attention to other students enough to recognize people he didn't see as frequently as his classmates.
"What's up with what?" Another unfamiliar voice.
"That prick from 3-A carrying around a baby. What the fuck is his name again? Bakugou or something?"
"Dude, didn't you see the news. That's the baby he rescued during that huge battle a month ago."
The first voice scoffed. "That's a load of crap, and you know it. Did you know he's an omega?"
"Yes? He's part of the big three and he's one of the only male omegas in the hero course? Do you even go to this school? What are you on about? Are you jealous that he's a better hero than you or just mad that he's not your omega?"
"Me? Jealous of that asshole? As if," the first voice laughed, "That baby is his for sure. He probably fucked his way to the top, and got pregnant doing it. Bet if I asked nicely, he'd get on his knees like the slut he is. I'd show him what a real alpha is supposed to be. He'd never get enough-"
Having heard enough, Katsuki kicked open the stall door, breaking the lock and the hinges in one fell swoop.
"Oh shit," the holder of the second voice whispered, eyes widening as he stood up straight from where he'd been leaning against a skin.
Darkly, Katsuki traced his eyes over the alpha standing still in front of a urinal, lingering on his dick in his hands. He smirked, stuffing his hands in his pockets. "Like you could ever hope to be enough of an alpha to handle me. I would wreck you," he growled, stepping passed the broken stall door to stand next to him, "Like you'd be enough of an alpha to handle my mate." His eyes dropped to the alpha's dick again as he sneered. "Pathetic. Omega or not, baby or not, I'm still going to be the top in the end."
With that very specific, very pointed double entendre, he headed for the door. He stopped by the other student who was cowering by the sink. The boy stunk of the other alpha, but the scent was forced, not mixed like it was with him and Izuku. Their coupling clearly wasn't a happy one. He clapped the student on the shoulder, and the boy flinched. "Listen omega, I'm only going to say this once. Don't settle for an alpha just because you think you need to to make it at this school as a hero. You're better than the likes of him. There are way better people out there to be your mate and friend. You can stand on your own two feet just fine."
He left before either student could get their faculties about them.
.....
Katsuki and Izuku were on the couch watching Ochako float a giggling Katsumi in her lap when Katsuki's phone rang. Picking it up, he immediately yelled, "Kirishima, catch!" before chucking it across the common room.
"Ah man, not again," Kirishima whined as he caught the phone to answer it brightly. "Mrs. Bakugou, hi! No, he's not available right now. He's at training with All Might. Right. Yes, I know. Yeah, I'll tell him. No, I don't think he's avoiding you." He shot Katsuki a heated look before returning to the call. "He's just really busy right now with practicals and finals coming up. Yeah, I'll tell him. Okay. Bye."
Kirishima walked back to him, phone in hand. "Man, stop avoiding your mom. You're going to have to talk to her at some point."
Katsuki sneered. "Like hell I do."
"Kacchan, you still haven't talked to your parents?" Izuku asked, pinning him with an admonishing glare.
"You can't say shit to me. You haven't told your mom about Katsumi either," Katsuki spat back, standing to sit on the floor beside Ochako. He wiggled his fingers in Katsumi's face and she grabbed for them, face scrunching when she couldn't quite catch them. When he stilled long enough for her to grip his fingers, she immediately stuffed them in her mouth.
Izuku's face reddened, and he stuttered, "W-well, I'm just... waiting for the perfect moment. I don't want to tell her over the phone."
"And I don't want to wake up with a knife to my throat. I'm saving your ass too. She'll kill me, but she'll hang you outside the front door like a flag, and you know it."
Izuku groaned, but didn't protest as he dropped his face into his hands. "She's just going to be more angry the longer we wait."
Ochako sighed. "I know that Mr. Aizawa said it was your jobs to tell your parents about this since you're 'adults' -loosely defined- but this is honestly a childish way to go about it. You can't hide this from her forever. She already knows you're hiding something. You need to stop hiding, and get this over with."
"Give me back my baby," Katsuki growled without much heat.
"No, she's having fun," Ochako retorted, smacking away his other hand as it reached for Katsumi, "Anyway, just meet them at the mall or something. Take All Might with you to run interference or explain or something. Just get it over with. We have some time coming up, and you should tell them before we're completely swamped."
"We're already swamped."
"Bakugou-" Ochako started.
Izuku cut in before she could say something that would actually make Katsuki take Katsumi upstairs. "That's a good point and a good idea. I'll talk to All Might."
Katsuki groaned loudly, but didn't protest. Silently, he just started to plan his and Izuku's joint funeral.