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Why did this shit always seem to happen on his fucking day off? Another rumble shook the surrounding buildings and Bakugou had to brace against the people frantically running away from the source of the chaos. With his hat covering his explosion of ash blonde hair, black face mask, scent patches, and casual clothes, no one had recognised him to beg for help or pull him into the fray. As he ran in the opposite direction of everyone else, Bakugou felt sweat start to gather in his palms. He rounded a corner and was immediately knocked back against a wall.
“Great,” Bakugou huffed. “It’s this fucking guy.”
That new air-headed alpha air-hero. His quirk was annoyingly (and nearly suspiciously) powerful, allowing him to blow out stupidly strong gusts of wind from his mouth. Even more annoying, the guy always caused some serious damage to his surroundings because he had shit control over said quirk. He was some new up-incoming that the commission was sponsoring. He hadn’t even gone to UA; it was like they had picked him up off the side of the road and thrown him in a hero suit overnight.
Looking towards the rubble, Bakugou spotted a second figure. The villain of the day no doubt. But when that familiar shock of red hair and fanged grin came into view, Bakugou’s heart squeezed in his chest. He felt a momentary pang of jealousy before furiously shaking it off. Just because he and Blood Riot had some stupid rivalry thing going on, didn’t mean that no other hero could fight him, especially on Bakugou’s day off. Of course, not.
He ignored the weird feeling in his chest as he crept closer to the action, making sure to keep out of sight. News coverage wasn’t here yet, so he was just making sure that if Blood Riot turned this guy into minced meat, someone would be able to point out the scraps. Obviously.
Air-head (not his actual hero name, Bakugou just didn’t give a rat’s ass about remembering it) traded several blows with Blood Riot, and he appeared to be quickly losing steam. Very few heroes, or villains for that matter, could successfully hold their own in a physical fight with Blood Riot, and Air-head seemed well aware of the fact that he was not one of those people. He was using his quirk and the surrounding rubble to launch attacks at the villain, but wasn’t very good at staying out of range of Blood Riots counter throws and fists.
Battles always sent pheromones flying and this one was no exception, filling the air with the aggressive scent of anger and power. They were both alphas, which only made it worse, but Bakugou was so used to such smells that they barely had an effect on him anymore. (For the record, Blood Riot’s scent absolutely did not make Bakugou a little weak in the knees sometimes, or send a thrill down his spine when it turned teasing and playful during their battles… absolutely not.)
Air-head was flinging out his attacks so chaotically, it was like he was trying to bring the surrounding buildings down. Only once he thought this though, did Bakugou realise that was exactly what he was doing. Rubble was raining down on Riot, forcing him to dodge falling bricks and metal and focus on the fight at the same time.
They both saw the incoming problem a second too late. Blood Riot was knocked backwards by a stray blast of wind at the same time a sizable chunk of one of the surrounding buildings came down, pinning his right arm and leg beneath a slab of concrete. Blood Riot growled out in either pain or anger, Bakugou wasn’t sure which, trying viciously to yank his arm free. At the very least, the pin hadn’t knocked him onto his back; he was trapped standing quite literally between a rock and a hard place. Bakugou might have laughed at such an occurrence under other circumstances (if this fight was between them).
Blood Riot would free himself, he absolutely could. Bakugou has seen him break free from so much worse. But it would take him a minute. A minute he didn’t have. Air-head was smirking, drawing up his chest in a very specific way that made Bakugou’s blood run cold. He’d seen that breath. The breath this idiot took before channeling his air out in such a precise shot that Bakugou had seen it shoot straight through walls and rocks and people like a missile. Blood Riot had never fought this guy before, would his hardening hold up? Would he even know to harden enough? Would unbreakable be enough?
Bakugou was moving before he could even properly think, running as fast as his legs could carry him. He planted himself between Blood Riot and Air-head with barely a second to spare and let off the biggest explosion he could without his gauntlets. The force of it sent Air-head flying backwards, crashing through the windows of an office building before he could even properly see what had hit him. He wouldn’t be getting up for a while. It also sent Bakugou back a few feet, stumbling a bit until he was caught around the waist by a massive, hardened arm.
Blinking the spots from his vision, Bakugou allowed himself only a second to lean into the solid body behind him. Before he could pull away though, that arm tightened around his middle and a now softened face nuzzled into where his neck met his shoulder, just over his covered scent gland. With his own pheromones suppressed, Blood Riot’s scent, already ramped up from the fight, easily clung to Bakugou, cloaking him in the villain’s rich, cinnamon smell.
“Hey!” Bakugou grouched, “What the fuck are you-”
“Thank you for saving me, pretty hero,” Blood Riot crooned.
Bakugou stiffened in his hold.
Blood Riot released a chuckle from behind him. “You really thought I wouldn’t recognise your quirk?” he asked, amusement coloring his tone.
The sound of crumbling stone broke Bakugou from his stupor, as Riot wrenched first his arm and then his leg free from the slab of concrete, his arm hardening pushed so far that it looked more like a menacing claw. He let it relax slightly once he was free and finally released his grip on the hero’s waist.
“Thanks for the rescue,” Blood Riot said with a cheeky grin that made Bakugou scowl. “Now get out of here before the other heroes show up,” he said, his tone turning serious before suddenly becoming teasing again in a way that gave Bakugou whip-lash, “Enjoy the rest of your day off, pretty hero.”
With that, he made off in the opposite direction of the sirens Bakugou could now hear quickly approaching. “Shit!”
Bakugou ran as well, booking it down a side street. The omega mentally slapped himself. What the fuck was he thinking, saving a villian? He wasn’t a fucking vigilante, had never once thought twice about beating piece of shit murderers and lawless criminals into pulps before throwing them behind bars.
“But Blood Riot doesn’t deserve to be fucking executed by that scumbag,” Bakugou tried reasoning with himself. “He’s never killed anyone, and he only commits petty crimes to get under the police and commission's skin,” he thought, trying to justify his actions.
But no matter how he twisted it, Bakugou couldn’t shake the nagging voice in the back of his head that whispered, “Blood Riot is different, he’s mine.”
Bakugou had made it about three blocks, his mind and thoughts so mixed up that he could barely hear anything over them. There was probably only one thing (well, maybe two) that could’ve grabbed his attention at that moment: the cry of a distressed pup.
“Papa!”
Now, despite how much the tabloids loved to criticize Bakugou as a hero and an omega, no one could deny that he had a soft spot for kids. Call it whatever you want, instincts or just who he was, but if Bakugou heard a pup crying out, he dropped everything to help them.
Quickly pivoting right, Bakugou barreled forward, letting his instincts and his nose guide him to the crying pup. He found him in record time, his heart cracking a little at the sight of a young boy crying out for his dad on an empty corner street, eyes swinging wildly, chubby face red and shiny with tears.
Slowing his approach, Bakugou peeled off his scent patches to release a calming scent to gently get the pup’s attention. Those wild eyes swung to Bakugou almost immediately and the omega was nearly stopped in his tracks by the vibrant red irises that met his own. He removed his hat and face mask, shoving them into his pockets. Those red eyes widened slightly, and Bakugou wondered for a second if the kid recognized him as Dynamite. Keeping his scent calm and inviting, he casually walked over to the kid, stopping a few feet away before crouching to his level.
“Hey little man,” Bakugou said in his gentlest voice. “Do you need some help?”
The pup looked at him hopefully, but still hesitated, pulling at the hem of his own shirt nervously. He didn’t look older than maybe six, and his jacket and backpack indicated that he might have been on his way home from school.
“I can’t find my dad…” he mumbled nervously, his eyes flickering around the empty street before looking at Bakugou again.
After waiting a moment Bakugou asked, “Did you and your dad lose each other when all the people started running?” It wouldn’t be the first time Bakugou had to chew out a parent for losing track of their kid while fleeing a battle.
The kid didn’t answer and the rising smell of distressed pup made Bakugou’s instincts itch to fix it, to help. Letting more of his own soothing and assuring scent out when the pup started sniffling again, Bakugou raised a gentle hand in offering. “My name is Katsuki. Can you tell me your name?”
“Kirishima Kuro,” the pup mumbled, rubbing at his tear streaked, reddened cheek.
“I don’t think your dad would want you out here by yourself, Kuro.” Bakugou said gently. “He wouldn’t want you to get hurt, right?” At the boy’s tentative nod, Bakugou pushed a little more. “Why don’t you come with me, hm? I can take you to the police station and they can help us find your dad, okay?”
To Bakugou’s surprise though, this seemed to almost panic the pup, his eyes widened and his scent spiked with fear. Before the kid could bolt in the other direction, Bakugou carefully but firmly caught his small arm, tugging him into a loose hug and shushing him softly. “Hey, hey buddy, it’s okay. I’m sorry, I didn’t mean to scare you.” Bakugou pumped out more of his comforting omega scent, willing the pup to breathe slowly. To his relief, the pup seemed to relax a bit, turning to press his teary face into Bakugou’s neck.
“It’s okay, we don’t have to talk to the police if you don’t want to,” he reassured, gently petting the pup’s black hair. “I’ll help you look for your dad, I promise.”
“Papa,” the pup sniffled, nuzzling further into Bakugou’s shoulder.
“I know, pup, I know. We’ll find him, don’t worry,” the omega crooned, gently scooping the pup up to rest on his hip as he started to walk them closer to the main street where hopefully the little man’s idiot father had run off to.
“You smell like papa,” Kuro murmured before he, seemingly having exhausted himself, fell asleep with his face pressed into the crook of Bakugou’s neck.
Bakugou froze.
He couldn’t mean…
~~~
Later that night, Bakugou was making dinner for two in his apartment. Kirishima Kuro turned out to be a very sweet and well behaved boy. He was currently sitting at the kitchen table, Bakugou’s hoodie swamping his small frame, doing his homework and chatting Bakugou’s ear off about what he did on the playground that day. The kid liked to talk, that was for sure.
Once Bakugou had gotten him home, he’d woken up not long after, all the unfamiliar smells putting his tiny body on edge. Bakugou had helped him hang his backpack and jacket up before giving him the hoodie he had been wearing when Blood- when Kuro’s dad had scented him. That helped calm the pup down a lot. As skittish as he was, it seemed to be more from all the excitement from earlier in the day and not fear of Bakugou himself.
Bakugou had promised to help Kuro find his dad, and he hadn’t been lying… but he honestly didn’t know exactly how he was meant to find a wanted villain that the police had been looking for for years. He’d been trying to formulate a plan in his head and realised that he would probably have to ask the kid some questions to figure out where to start.
Once dinner was ready, he quickly made up two plates. Bakugou sat them next to each other at the table rather than across in the hopes that Kuro would feel more comfortable sharing information if he didn’t set this up like an interrogation. Not that the kid would know what an interrogation was… but still.
Bakugou started light. “What’s your best friend’s name?”
“Yuki! She’s so manly. Papa says that anyone can be manly if they have a strong heart.”
Bakugou resisted rolling his eyes, a chorus of familiar ‘manly’ phrases circling through his head. “Where do you live?”
“With papa,” Kuro replied, pushing his veggies aside on his plate and going right for the meat. Bakugou should have seen that answer coming.
“Do you know your address?”
“What’s an address?”
Fucking spectacular.
“Do you know your papa’s phone number?”
A long shot, but he figured he had to try it.
Kuro squished up his face like he was thinking really hard. “Papa’s always changes.” It took a moment but then his face lit up with a mega-watt smile. “But I know Mimi’s!”
Bakugou grinned back, petting the pup’s soft black hair proudly. “That’s great buddy! Finish your dinner and then we’ll try giving her a call.”
Bakugou really hoped this worked.
As soon as dinner was done and Kuro’s face and fingers had been cleaned, Bakugou grabbed his smartphone and brought up the keypad.
“Alright pup, let’s try calling your Mimi.”
With a determined look, Kuro slowly typed in the number, reciting it under his breath. Then he hit the little green button. Bakugou put the phone on speaker and they both waited as the phone rang, seeming to hold their breaths. It rang four times before they heard a click, and suddenly a young woman’s frazzled and almost hopeful voice came through.
“Hello?”
“Mimi!” Kuro instantly squealed, squirming in Bakugou’s lap. Thank fuck.
“Oh my god! Kuro, baby, is that you? Where are you?! Your dad is looking everywhere for you! Are you alright?”
“M’okay, I’m at ‘Suki's house,” Kuro said.
There was pause on the line, and the silence felt almost deadly. “Okay, sit tight baby. Can you hand the phone to whoever you’re with?”
Kuro looked expectantly at Bakugou. He picked up the phone and his palms were only a little sweaty. He took it off speaker and moved to stand up. Kuro whined, saying he wanted to listen. “Sorry, pup, I need to talk to your Mimi now. Why don’t you try to get some more of your homework done so when you see your papa again you can show him, hm?”
Kuro grumbled, but obediently sat back down while Bakugou moved to the other room. The blonde sucked in a breath before lifting the phone to his ear.
“Hey, I-”
“Who the fuck are you and why do you have Kuro?” The woman’s voice held none of the softness it’d had before. It had become nearly murderous.
“I found him wandering around in some back alley. Said he’d lost his dad.”
The woman laughed, humorless. “Sure you did. You must have been planning this a while, you’ve got this number encrypted to hell so it can’t be traced. But I’m sure you’re just a good samaritan trying to help out, huh?”
Fuck. Bakugou had completely forgotten, hero numbers were encrypted to hell and back for safety reasons. This was gonna be tough to explain. “Listen, I’m-”
“What do you want, hm? Money? Cause if you’re holding my nephew hostage for a quick buck, there won’t be anything left to bury by the time I’m through with you.”
The hairs on the back of Bakugou’s neck stood up. This woman was serious.
“No! Jesus, fuck!” Bakugou swore. “Is Blood Riot there?”
“Oh, if you’re scared of me, he’s ten fucking times worse.”
“Fuck it,” Bakugou grumbled. “This is Dynamite.”
“The fuck do you mean-”
“The pro hero,” Bakugou growled into the phone. “Dynamite. Now put Blood Riot on the fucking phone.”
Bakugou held his breath for a second before a confused and stressed sounding, “Dynamite?” finally made its way through the phone in that deep, familiar baritone.
“Hey, Riot,” Bakugou starts awkwardly. “I think I found your kid wandering around a back alley after that fight today.”
“Shit,” Blood Riot swore, the curse sounding almost relieved. “What- How… How did you even get this number?”
Bakugou chuckled, finally feeling some of the tension in his spine release. “It’s a long fucking story. Now,” Bakugou said, getting down to business. “How do you wanna do this? I can’t exactly give you my address…”
Blood Riot snorted and Bakugou swore he could feel that familiar smirk spread across the alpha’s face. “Fair point, pretty hero,” he agreed. He seemed to think for a moment before offering, “Meet me at the playground downtown, a couple blocks from that bank I robbed last week.”
Bakugou rolled his eyes at that. “Fucking fine. See you in an hour, Riot.”
With that he ended the call and headed back into the kitchen.
“Hey, pup,” Bakugou called gently, getting Kuro’s attention. “Pack up your bag, we’re gonna go meet your papa.”
“Yay!” Kuro cheered, flashing that huge grin again and making Bakugou’s heart melt a little with it.
~~~
The sun was setting, but it wasn’t completely dark when they arrived at the park. Luckily there were no families around, though there was a figure standing ominously in all black, red hair flicking as his head moved on a swivel, obviously anxious.
“Papa!” Kuro called out from where he was perched on Bakugou’s hip.
Blood Ri- Kirishima’s head snapped in their direction immediately, a huge relieved grin splitting his face in half.
“Kuro!” he called in reply, quickly rushing in their direction. As soon as he was close enough, Kuro practically leapt from Bakugou’s arms and into his dad’s. He wrapped his tiny arms around Kirishima’s neck while his dad held him close, one hand petting black hair with clear affection.
“Thank you,” Kirishima whispered over Kuro’s shoulder.
Bakugou felt his cheeks heat up. “It was nothing, he’s a good kid.”
Kirishima nodded, a proud look on his face, before he knelt down to place Kuro back on his feet. “Baby, I need to talk to my friend for a minute. Will you go play with Denks and Mimi for me?”
Bakugou blinked as two shadows melted seemingly out of thin air in the form of a short blonde twink and a gorgeous, pink skinned woman. It was Chargebolt and Alien Queen, two of the other troublemakers in Riot’s circle. They both shot Bakugou a look that was a mix of suspicion and gratitude before they turned their attention to Kuro, who had excitedly run up to them to play and tell them all about his eventful day.
“I can take that,” Kirishima offered, bringing Bakugou’s attention back to him. The omega hadn’t even realized that he still had Kuro’s backpack slung over his shoulder and quickly handed it over.
“So,” Kirishima started, looking at the blonde almost nervously. “Thank you for helping Kuro. And for not taking him to the police.”
Bakugou nodded, feeling awkward. “Yeah, well, he freaked out when I even suggested it. Before I realized he was yours.”
Kirishima chuckled, low and familiar and yet unfamiliar at the same time. “He’s not fond of the police, or even heroes for that matter. I’m surprised he went with you.”
Bakugou’s blush came back full force at that. “Well, umm…” he admitted, “I think the only reason he did is because you scented me before running off… he said I smelled like you.”
Bakugou watched as Kirishima’s eyes widened at that, his ears turning nearly as red as his hair before he laughed in near disbelief. “I guess it’s a good thing I did then.”
An awkward, charged moment passed before, “I’m not actually his dad though.”
Bakugou’s face scrunched in confusion. “He looks just like you? And he calls you papa-” the omega cut himself off with a growl. “What did you-!”
“I’m his uncle, Dynamite. Jeez, calm down, you’re gonna stress the others out with all the pheromones you’re pumping out right now!” Kirishima stepped closer to Bakugou, one large hand gripping his shoulder in a grounding way, the alphas scent reaching out to calm him. Bakugou hadn’t even realized that he had started to reek of protectiveness and aggression.
Kirishima continued to explain in a low, calm tone. “I adopted him after my sister and her mate died. I won’t go into specifics right now, but… it was an accident caused by a drunk hero. The police and commission covered it up. He was barely two years old. I adopted Kuro and became Blood Riot because of that.”
Bakugou’s scent twinged with sorrow, for Kirishima and for this sweet little pup that had lost his parents so young. “I’m sorry,” he murmured.
Kirishima gave him a sad smile. “It wasn’t your fault, Blasty,” he said, reaching up to tuck some of the blonde’s hair behind his ear. “But, thank you.”
Just then, Bakugou felt a small tug at the bottom of his shirt. “Are you okay, ‘Suki?”
Bakugou smiled softly when he looked down at the kind little boy. He instinctively leaned down to pick the pup up, bringing him to settle on his hip like he’d done it a thousand times before.
“Yes, I’m alright, pup,” Bakugou cooed and rubbed his cheek affectionately against Kuro’s forehead, the small boy nuzzling back easily.
Neither of them noticed the way Kirishima’s eyes had widened or the way he gripped the tiny straps of Kuro’s backpack a little too tight.
After a moment, Kirishima broke the silence with a cough. “Well, I suppose we should be getting Kuro home,” he said almost reluctantly. “Gotta get him some dinner and get his homework done before he goes to bed.”
“Oh,” Bakugou said, hugging Kuro a little tighter when he felt those little arms tighten around him. “He got some of his homework done at my house, and I fed him dinner too. I hope that was okay…”
“Really?” Kirishima seemed surprised. “He’s normally so picky, what did he eat?”
Bakugou blushed again, one hand absently carding through soft black hair. “I made some simple steak bites with some rice and veggies. Though he didn’t eat as much of his vegetables as I would have liked, I didn’t want to push him.”
“I’m surprised he ate any of them at all,” Kirishima admitted with a surprised chuckle.
They lapsed into silence for another few moments, the quiet pleasant rather than tense for once. Then, Kirishima finally lifted his arms out to take Kuro back.
“C’mon buddy,” he said. “We’ve got to get you home.”
Kuro whined quietly from the omega’s arms. “Can Kaachan come too?”
Kirishima and Bakugou both froze.
The alpha cleared his throat after a moment. “No, buddy. He has to get back to his own house.” He was offering Bakugou an easy out, but Kuro didn’t let up.
“Can he come over for dinner tomorrow then?” he asked, his eyes bouncing between the two adults.
Kirishima, clearly at a loss for words at his own pup’s boldness, dragged a hand over his face, clearly fighting back a grin. “Did you ask if he would like to?” he finally asked.
Kuro turned back to look at Bakugou with a smile. “Do you want to come make dinner for me at my house tomorrow, Kaachan?” his little fingers were playing with the strings of Bakugou’s hoodie nervously.
The omega finally huffed out a laugh, at the same time that Kirishima buried his face in his hands, chuckling as well. Bakugou couldn’t help but stare. The alpha always had such a huge, confident presence during their battles. And while he was still massive, he had softened down to someone else in that quiet park. It wasn’t Blood Riot in front of him. This was Kirishima, Kuro’s papa. Someone strong, but also silly and gentle. And still so damn attractive.
This was so stupid. Bordering suicidal.
Bakugou wasn’t sure he cared.
“Hmm,” he hummed, pretending to think it over. “If your papa doesn’t mind…”
Kirishima lifted his gaze at that, his eyes wide, but his smile playful.
“I would love to.”
~~~
Epilogue
Bakugou chuckled even as he tried to shove Kirishima off of him. The redhead held him in a tight grip, though, refusing to let go and continuing to plant kisses along Bakugou’s face and neck.
“Where do you think you’re going, hm?” he asked between kisses, his growling tone playful.
Bakugou reached up to flick him on the forehead. “It’s almost time to pick up Kuro from school, we have to get ready to go.”
Kuro hadn’t been allowed to walk home by himself since that fateful day a little more than a year ago. Both of them realized how lucky they were that it had been Bakugou that had found Kuro when he had gotten lost that day, and ever since, he had been picked up from the school gate without fail by at least one member of their pack.
“I asked Mina to pick him up,” Kirishima said between pressing kisses into Bakugou’s shoulder. “And he’s sleeping over at her house tonight.”
Bakugou’s eyes narrowed even as a grin stretched the corners of his lips. “Why didn’t you tell me earlier?”
Bakugou could feel the smile pressing into the skin of his neck. “I wanted to surprise you. Don’t tell me that you thought I forgot about our one year anniversary?”
“No,” Bakugou muttered, a light blush dusting his cheeks. “I just didn’t think we were gonna make a big deal out of it.” The omega had assumed that it would be like any other night. They would pick Kuro up from school, eat dinner together, and after they put Kuro to bed, they would have sex as quietly and quickly as they could.
“Not make a big deal about it?” Kirishima asked, mild outrage coloring his tone. “Clearly I haven’t been obvious enough.”
The alpha growled playfully, manhandling Bakugou onto his back and pinning his wrists to the pillow beside his head. Bakugou struggled slightly, just to test Kirishima’s grip, a breathless growl of his own meeting the alpha’s head-on.
“In case you somehow missed it,” Kirishima began, leaning down to bite teasingly at the tip of Bakugou’s nose, “You’re it for me, Katsuki. I plan to marry you, to mate you, if you’ll let me. I was gone for you the first time I fought you, and I knew I had to make you mine the first time I saw you holding our pup on your hip.”
Bakugou was nearly panting beneath Kirishima at this point, the bold declarations mixed with the possessive, dominating position made his eyes glassy with sappy tears and his body hot with arousal at the same time.
“So yes, it is a pretty big deal that I found the person I want to spend the rest of my life with, the person I want to make a home with, and I somehow managed not to scare him away.” Kirishima declared, pressing a soft kiss to Bakugou’s lips. “And I plan to spoil him in every way I know how to for the rest of our lives; starting with a night out to dinner at some ridiculously fancy restaurant that he pretends to hate but secretly loves, several presents that I have been hiding for weeks, and a whole night to ourselves, so we can be as loud and freaky as my omega wants.”
Bakugou couldn’t help but chuckle as Kirishima waggled his eyebrows, his chest feeling so full with a happy, fluffy lightness that he hadn’t been sure he’d be able to find in this life. Leaning up, Bakugou pressed a soft kiss to the redhead’s lips, trying to pour every ounce of what he felt into it. And something must have gotten across well enough, because it didn’t take long for the kiss to deepen into more, into a kiss that carried a far deeper meaning, to both of them.
Pulling back just barely enough to break the kiss, Kirishima pressed their foreheads together, looking longingly into Bakugou’s eyes. “I love you, more than I know how to say,” he declared, breaking the last of Bakugou’s resolve and causing barely held back tears to fall.
“I love you, too,” Bakugou declared back through the tears and the massive smile taking over his usual scowl. “Even if you are a freaking sap.”
“You love it,” Kirishima hummed, sinking into a new kiss that was decidedly more heated than the last.
“Yeah,” Bakugou thought, sighing happily into the kiss. “I really, really do.”