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At the age of 4, Bakugou Matsuko has become a menace.
He's a headache to society. And he doesn't even have a quirk. Yet. Or maybe, nothing at all.
Katsuki's mate has been devastated when their pup didn't get his quirk at the age of four. Katsuki admits that a part of him is disappointed, but not of his son. Hell, his mate is quirkless but is also as terrifying as Mitsuki when he became a dam. What Katsuki's disappointed with is the happiness his son will feel and the smile he would flash the moment he manifests his quirk.
Matsuko's room is drowned in Dynamight figures and merches. Matsuko owns some Iceflame stuffed toys loitering around and a few Red Riots. Many hero merches, actually. But there's a rule that must not be broken, a rule that Matsuko implemented with his small alpha growl.
No one is allowed to put other hero merch inside his room. And no one is allowed to touch his Dynamight stuff. Even Katsuki and Izuku themselves have to be watched by Matsuko when they try to arrange his room every other day. Katsuki, the Dynamight himself, has to be sprayed with alcohol all over his body and Matsuko always makes sure that he puts lotions in because just like what Matsuko said..
"Daddy, what if you activate your quirk while holding my limited bronze age Dynamight figure number 3? I will cry for a week. You don't want that."
Yes. Matsuko has five different limited bronze age Dynamight figures because apparently the figures don't look all the same. Izuku and his eagle eyes couldn't even notice the difference between the five, but hey! Who are they to not give Matsuko five same figures of Dynamight?!
Katsuki is even more proud, his pup feeding his ego that Izuku had to roll his eyes a lot. Katsuki sometimes wonders if his mate's retina is still okay.
Matsuko's obsession over his dad's profession is proof enough what their pup aspires to be. And that's why Katsuki is disappointed at the lack of quirk.
Not because he wants his son to have a great power quirk like his. But the thought of his son not getting his quirk and waiting for it..
Is this what Izuku endured when they were kids? Katsuki doesn't even want to imagine what the quirk examiner will say to them once they decide to get Matsuko checked.
Luckily, Matsuko takes after Katsuki a lot, like his confidence and self-love. And mixed with Izuku's intelligence? Matsuko doesn't need a badass quirk! Katsuki is willing to give Hatsume Mei a whole ass warehouse if it means she'll create the perfect support gear for his pup.
Quirkless or not, Katsuki will make sure that his pup will be a hero if he wants to be. Homeschool? No problem. He can contact Fuyumi as Matsuko's official homeschool teacher. Hero training? Katsuki has that covered. He will use his hero privilege if needed, just to give his pup a legitimate hero training, he can register and take a licence exam.
Bakugou Katsuki, or Pro Hero Great Explosion Murder Dynamight, is Japan's number 1 hero after all.
He will make damn sure that his pup will be happy and be a good hero. That is if Matsuko really, really, really, wants to be one.
And truthfully, Katsuki and Izuku are set to the idea that Matsuko might be quirkless after his initial quirk check-up. And despite the lack of toe joint on Matsuko's small toe finger, his prime alphan status should be good enough to manifest and force his quirk out of him. The quirk doctor also said Matsuko is not the first pup to be quirkless even without the extra joint. Apparently, before the first record of quirk manifested, the human race used to be born with extra fingers, bones, body parts. And Matsuko's lack of extra joint might be one of the cases.
Izuku cried that night, weeping how unfair the world is. And no matter how much he put his own pup on pedestal, knowing Matsuko is strong enough even at his pup age, the omega can't help but remember how he lived being the laughing stock of the neighbourhood's pups.
He simply doesn't want his pup to experience that. But Katsuki vowed that whoever dares to even look so wrong at their pup, the alpha will pull their eyes out of their sockets.
Katsuki loves his pup a lot. Quirk or not, Matsuko is Katsuki's pup. He is his own flesh, blood, pheromones.
And of course, because Bakugou Matsuko is purely bred through Bakugou Katsuki, it's an understatement that his quirk would manifest in the flashiest way anyone could imagine.
It happened during the Hero Banquet, wherein Japan's Number 1 Pro-Hero Dynamight along with retired Pro-Hero Canalfire are both invited, SVIP heroes for the gathering.
It is no secret that Canalfire's omega son is the one who got the number 1 hero locked out and ruined for anyone else. Though the public never finds out anything else about the omega, aside from the fact that the omega is a male, no other stuff was made public.
Not the same thing with Matsuko, though. Katsuki has heard a lot from Shoto himself how Endeavour kept his family safe out of villains, never being attacked in the safe confinement of their traditional house.
He also knows how Endeavour had planned to use his youngest brat to surpass Allmight, though that plan didn't work because first, Shoto used to hate his embarrassing sire and two, it's not like the plan would work. Bakugou Katsuki entered the U. A. with the first rank on entrance exam and graduated valedictorian with the rate of 97.4% in academics and heroic approval.
He will not, in any way as much as possible, put Matsuko at whatever Shoto had to endure in his younger years. That's a fact.
But Matsuko is as public image as his sire and dam's sire; being the number 1's only pup and one of the world's best fire quirk user's grandchild, Katsuki decided to put his son on limelight even without the expectation of a quirk out of Matsuko.
The last thing Izuku wants is for the media to put Matsuko on screen without their consent, so they decided to introduce the pup even before the media use the innocent pup alpha against them.
And too many villains, even the most powerful ones, have tried to harm the pup in the past five years. Too bad that Katsuki has Mei, the Hero Commission, and his genius omega mate to back his household up. Villains wouldn't be able to step inside the Bakugou subdivision, which has ten different types of security system that changes everyday, so even if the most genius villain tried to study the subdivision's security, they wouldn't be so sure.
That's why Katsuki doesn't have any problem putting his pup in the limelight. That's why he brought his brat to the banquet with Hisashi, the older alpha has the pup in his lap as the party continues while Katsuki talks to Hawks, the now number 3 hero.
"He doesn't have school to attend today?" Hawks asks Katsuki, sending Matsuko a brief look before looking at the alpha again.
Katsuki grumbles. "His pre-school's off day is Wednesdays. And it's not like he will let us leave without him. Brat's been babbling about meeting Allmight and Endeavour for nights. Look at him. Still fuckin vibrating."
That's an understatement, because Matsuko is whipping his head back and forth while muttering with few rated-12 curses, his hands both fishing hero figures, one's Allmight and one's Endeavour. Hisashi is listening attentively to the pup's muttering. Few 'damn's' and 'hell's here and there in between.
Other heroes and guests have been sending curious looks at the pup, but no one dared shut him up with his motormouth.
Combining Izuku's muttering with Katsuki's loud filthy mouth is one of the downsides of Matsuko's traits.
When Katsuki hears a 'fuck' in between those words, he turns to his pup and glares.
"What the heck did you say?"
Matsuko stops blabbering. And then grins.
"The F-word, Daddy."
Katsuki bites back his own F-word and closes his eyes.
Matsuko is starting to smell like Hisashi's alphan pheromones, and while that's a comfort of a pack member to the pups, that just also means that Hisashi's pushover and spoiler scent is wrapping Matsuko, making his son obnoxious and not scared to growl back at Katsuki.
And that's why he needs to assert his alphan pheromones and scent now to his pup or else Matsuko will be so annoying to deal with. Matsuko, without his sire's scent all over him, doesn't know how to submit.
Smelling Katsuki's familiar alphan sire scent, Hisashi leans back to his chair so the younger alpha would easily scoop Matsuko up. When Katsuki stands and scoops his pup from Hisashi's lap, Matsuko tries to wiggle out but Katsuki is fast enough to scent his pup.
Matsuko slumps on his chest, purring when his sire's comforting scent covers him.
"You don't curse. Or else your dam will cry if he finds out."
Matsuko whines and nuzzles Katsuki's left cheek.
"No! Matsun is sorry! Don't tell Dada that Matsun said the F-word!"
Katsuki huffs and leans his head back, scanning his pup's face.
Even after five years, and as time passes by, it's still amazing to stare at Matsuko and see his younger self. Though his pup's hair is wavy like Izuku's, it's still bushy like Katsuki's, as blond as Katsuki. His eyes, a mix of red and green, his slit eyes that resemble Katsuki's, but chubby cheeks dotted in freckles that look so much like Izuku's.. The more the time passes by, the more Matsuko grows looking like Katsuki with touches of Izuku's own physical traits.
Not to mention that Matsuko can grin like Katsuki and then beam like Izuku in a matter of ten seconds.
Katsuki knows his son is a menace.
"I have to tell Dada. You know he knows everything."
Matsuko pouts, pouts like Katsuki, and even if Izuku is immune now to their pup's antics, Katsuki is not.
He will always, always, always be a pushover to his pup.
"Don't tell Dada, please," Matsuko whispers, all looking and smelling sad. The sad scent is so pungent, that they gather onlookers because of it.
Katsuki purses his lips and walks around the hall, weaving through bodies of the guests, ignoring the looks that follow them. He walks around to not strain his body, knowing he will have to hold his pup for the rest of the might or else he might wreck havoc now that he feels down.
Matsuko is just as petty as Katsuki, it seems.
"Okay. I will not tell Dada but if he finds out!" Katsuki gives his pup a stern look. "If he finds out, you will apologise."
Matsuko beams, and the boring party seems so bright to Katsuki suddenly. He sometimes thinks that being cute and charming is his pup's quirk.
"Matsun promises!" the pup exclaims then and shoves his short, chubby pinky finger in front of Katsuki's face, almost poking his nostril. He almost jammed the Endeavour action figure that he's still holding onto Katsuki's face.
Katsuki grins at his pup, releasing tons of his alphan pheromones for his pup, making the nearby guests cough awkwardly –and some omegas to flush, not that Katsuki cares– and curls his own pinky finger to Matsuko's.
"It's a deal," Katsuki says. "Prime alpha to prime alpha talk."
Matsuko giggles and leans in, booping his nose tip to Katsuki's crooning and wrapping his sire in his own pup scent. Katsuki sighs in contentment, always loving whenever his pup scents him back.
After finally whisking his sire to submission like a menace pup that he is, and Katsuki is fully aware of it and lets his pup have his way, Matsuko wiggles from Katsuki's hold, indicating that he wants to be put down.
Katsuki relents and puts Matsuko down, the pup immediately stomps away while Katsuki follows.
People don't part ways, but give way to the small alpha walking in his designer clothes and Dynamight eye mask. He has tight grips on his action figures as he weaves through the throng of guests, the others cooing at the pup.
Matsuko has a little frown in his face, and that's his default expression. At least he's not scowling like when Katsuki was a pup.
Matsuko suddenly squeals, takes off running with a giddy 'Uncle Shoto!'. Katsuki follows leisurely, and sees Shoto crouching down to pick Matsuko up.
The pup is wiggling and giggling as Shoto scents his godson, Katsuki scowling at the other hero.
"I can't believe he grew out of hating you. I trusted him too much," Katsuki grumbles while watching his son stealing chicken fingers from Denki's plate.
"Hey, kiddo! Not nice!" Denki protests, but pushes his place nearer so Matsuko wouldn't need to reach out far.
The pup beams, tilting his torso to lean closer to Denki, and then nuzzles the hero's cheek. Denki's lower lip wobbles and snatches Matsuko out of Shoto's hold.
"Give me!" Denki cries while scooping Matsuko. "I love him! Oh God, Katsuki, I can't believe you made an angel! He loves me! You saw that, right?!"
Katsuki rolls his eyes, but there's pride behind his eyes, knowing that Matsuko at least knows how to interact and wrap these idiots in his tiny fingers. Pup Katsuki was born with constipated emotion. Good thing that Matsuko also inherited Izuku's bubbly personality and not just Katsuki's grouchiness and pride.
"Bet he's just trying to get away from stealing your food," Shoto says, who smiles when Matsuko turns to him and makes grabby hands. "And I feel like I'm still the favourite."
Denki mutters sulkily as he hands Matsuko back to Shoto, the pup nuzzling the red side of his hair.
"Uncle Shochan is so warm. So warm like Daddy. So warm like Grampa Sashi. I want to be warm, too."
Shoto raises one of his hands, flaming the tip of his index finger to the lowest heat possible, and Matsuko beams as he touches the small fire.
"You better not burn my brat or else I'll kill you," Katsuki warns, watching intently as Matsuko giggles while waving his palm on the small fire, trying to kill it.
"I know how to control my quirk. Thank you," Shoto replies. Katsuki grumbles and takes the unoccupied chair beside Shoto.
Katsuki is about to ask about the others' whereabouts when someone clears their throat. Katsuki looks back, and sees a male –probably an omega– in formal clothes. Must be a journalist or someone from the media.
"Excuse me, Dynamight, sir?" the omega croons softly, making Denki snicker behind his palm.
Shoto looks tired all of a sudden, and Katsuki can feel his left eyelid twitching from annoyance.
Being publicly mated doesn't really stop others from trying.
"What do you want?" Katsuki snaps, foregoing the curses or else Matsuko would pick up on it.
"Uhm, could we do an exclusive interview with you tonight?" the omega asks politely, and even though he sounds genuine, his sweet scent also doesn't hide the attraction he's emitting.
Katsuki glares. "Can't you see I'm busy with my friends and my pup?"
"Shochan is your friend?!" Matsuko suddenly asks, shocked and amused.
This time, Denki guffaws and slaps the table, while Katsuki tries not to glare at his son.
"He's not my friend."
"We're best friends, Matsun," Shoto croons at the pup, nuzzling his nose tip on the pup's freckled cheek.
"Oh.." Matsuko whispers, a frown and contemplative look in his face. "I thought Dada is Daddy's best friend."
Shoto stiffens. Katsuki smirks while Denki gapes at the pup.
"Uhm.. You see, Matsun," Shoto starts to talk, sending Katsuki a panicking look. Katsuki smirks wider. "There are different types of friendship. Me and your sire, we're hate best friends. Like how Eiji and Kats are bro best friends."
"Hate best friends?" Matsuko tilts his head. And then beams. "Like me and Yuchan?! I hate him because he always uses his quirk on me, but he is Aunt's Chako's pup so we're friends, too!"
"Yeah, like that." Shoto sighs in relief.
Too soon.
Because Matsuko turns to the male omega still standing at their table and opens his mouth to.. Showcase how much of a problem child he is, despite not being Aizawa's student at all.
"How about you? Are you my sire's friend, too?" Matsuko asks all too innocently. Katsuki sighs and then shakes his head.
"No, pup. I don't even know who he is," Katsuki drawls and gives the male omega a stern look.
But it seems like that eggs the male omega more, for he tilts his head a little to show his unmarked mating gland to Katsuki, and pumps lots of omegan pheromones.
Katsuki and everyone nearby knows what this particular omegan scent is. It's the scent of dam enticing their pup for quality time, or grooming a pup's hair, soothing a pup's worry, wrapping their pup in comfort and a dam's maternal love.
That. That is what this male omega is trying to do, enticing Matsuko with his natural omegan pheromones. And Katsuki knows that the male omega is also trying to show that he can be a good dam to his pup.
As if! As if there's anyone better than his Izuku! How stupid this male omega is, thinking so little of Katsuki?!
Matsuko scrunched up his nose, probably smelling the foul omegan scent trying to capture him in omegan maternal scent, but failing miserably.
If that's the peak of it all only, then there will be no more drama.
But the male omega's scent obviously agitated Matsuko, who is now wrapping his little chubby arms around Shoto in an attempt to mask the offending scent.
Katsuki wants to take his pup to sooth him, but the male omega is still standing beside him and taking Matsuko to him will just get his pup closer to this audacious omega.
"Can you just leave us alone? I'm not interested and will never be unless it's my omega mate," Katsuki snaps.
The male omega opens his mouth to reply, pumping another dosage of his scent. Katsuki grimaces at the scent and embraces himself for another round of curses that he might throw to this omega when Matsuko starts to scrunch his face to sneeze. And then–
BOOM!
Katsuki doesn't get thrown off by the blast, but he sure as hell leans back when he smells the familiar scent of burnt sugar.
Matsuko!
He turns to Shoto and about to curse the bastard to the second life for endangering his pup, but what Katsuki sees stops him from shouting.
Matsuko is covered in soot, just like Shoto and Denki.
Matsuko also has little flames out of his nostrils, and he's staring at his... At his hands in wonder.
"What's that?" Matsuko muses to himself, wriggling his fingers.
Distinctly, Katsuki can hear the commotion around them. He hears Hisashi walking towards them and can smell his father-in-law's worried scent.
Katsuki, though, is just looking at Matsuko. After a beat of silence, Katsuki slowly scoops his pup from Shoto who gives him the pup willingly.
Matsuko is staring at his hands, eyes wide and amused.
Matsuko then slaps his hand on Katsuki's face. And then–
BOOM!
Katsuki groans at the hot feeling on his face. It doesn't burn. But he's definitely covered in sooth, too.
"What happened here?!" Hisashi Aska frantically, looking at his grandchild in worry.
Matsuko beams. "Grampa! I exploded!"
Katsuki's heart stops beating at those words.
It's not Shoto's quirk and stupid candid mistakes. Shoto isn't even explosive to be fun with, unless there's chemical materials to support a flammable explosion.
And that means..
That means that the explosion came from Matsuko?
Katsuki slowly leans back and holds his pup's face in his larger hands. Matsuko giggles at the feeling of his thick palm skin but still soft. He takes his pup's hands on each of his, examining the oh so smaller palms of his pup.
There are small blisters, but not big enough to hurt and make Matsuko cry. Katsuki knows how much his pup can tolerate pain, with how Matsuko always seems to get himself in trouble thrice a day.
Katsuki's chest feels tight, in a good way. He doesn't want to raise his hope up, but it's there, glaring straight at him, that his pup exploded after being agitated.
The alpha stands up and gives Shoto a nod, ignoring the imploring stares of the guests as security personnels start to surround Katsuki and his pup. Hisashi is by his side, looking at Matsuko in worry.
"He okay?"
Katsuki nods. "I think it manifested."
Hisashi's brows furrowed, and then his eyes started to widen in realisation.
"Mamifesded what, Daddy?" Matsuko asks innocently. Katsuki purses his lips and rocks his pup in his arms.
"Manifested," he corrects, not that Matsuko will listen. "And I gotta talk about it with Dada, first, okay?"
"Like adult talks?"
"Hmm," Katsuki hums. "And can you promise me anything, cherry bomb?"
Matsuko tilts his head a little in wonder. "What, Daddy?"
"Whatever you did back there at the party, don't ever do it again."
The pup starts to frown. "But it was so fun, Daddy.. I feel my body go boom! And then my arms tingle like Granma Mitsuki's bbrrrr chair!"
Katsuki tries not to squeeze his pup in his chest for being so damn adorable. Matsuko loves Mitsuki's massage chair. It vibrates and makes his pup laugh all day long.
One thing to be kept to though, is the fact that Matsuko felt a little vibration from the explosion. Katsuki can feel a little tremor, too, whenever he uses his quirk. But he's not so sure about what that could mean.
As they walk to the parking lot, Matsuko starts to nuzzle Katsuki's scent glands. Seems like using the quirk takes a toll on his pup. It's not a small explosion, either, like Katsuki's when he was a pup.
"We should get him checked up as soon as possible," Katsuki tells Hisashi when they're inside the car, finally. Hisashi doesn't bother to raise the partition, knowing that the information about Matsuko's possible quirk is bound to spread after that commotion back at the party.
"Izuku will be so excited. I just hope he won't expect too much. And it might be a false alarm."
"I think it's a quirk this time," Hisashi says with contemplation. Katsuki looks at the older alpha with interest. Matsuko nuzzles more to his neck, crooning in his sleep. "I could feel it. I mean, there's a small pull, I don't know. But I can feel my pup kin exerting power, and it's impossible to be Izuku. He's quirkless. It must be Matsuko. You didn't feel a pull? I mean, yours might be harder. You're the sire."
"It would be your quirk he inherited, though. If you felt a kin pull. Though I'm not so sure because I was shocked and worried from the sudden explosion. I thought it was Shoto's doing. But his fire quirk is not explosive unless mixed with reactive chemicals."
Hisashi nods, a serious look on his face. But there's also a trace of pride there.
"I'm sure it's a quirk, though," Hisashi says and grins at Katsuki.
"Quirk or not, I just want to make sure that he's fine," Katsuki says, sighing and holding his pup tighter. "But I will not set the possibility of a quirk aside. If it's really a quirk manifestation, then we better manage his quirk council as soon as possible. He's a bit late on it."
Hisashi doesn't talk about the sudden explosion again after that, sensing that Katsuki prefers to talk to Izuku about it more than anything.
One thing Katsuki wants is his pup's safety, though. Just like he said, quirk or not, his pup's safety comes first than having a quirk.
When Izuku heard about the explosion, the omega didn't wait for too long. Izuku drags Katsuki and their pup to the best quirk checker in the country, to Recovery Girl's family clinic.
They didn't schedule a visit, so they needed to wait in line.
There's a long line, –but a nurse has extracted a drop of blood from Matsuko– probably about fifteen pups with their sires and dams. Good thing is that the clinic is the size of a centre, or more accurately, the size of a dome.
Matsuko entertains himself by watching the other pups from the outside of the glass window of the glass room, fascinated at the pups' quirk working.
Izuku is full of jitters, sunglasses and scarves and hoodie covering his whole identity and he's failing so much at being mysterious and elusive at all. A few have sent them weird looks, both because of Katsuki's presence and the omega with him, obviously hiding his body and soul.
Good thing is that Recovery Girl's clinic is a recommendation type of clinic, exclusive only for close contacts, so that means that the other pups here are pups of heroes and government officials.
"If it ends up a quirk, do we need to put him in the U.A. nursery school or we gonna wait 'til the school year ends to enrol him in the U.A. primary school for the next school year? Ingenium's nursery school has good security, but U.A. has a better and professional quirk council that will help Matsuko's possible quirk. I don't want to wait for another school year, Kacchan. Oh, wait! What about personal quirk counselling?! You think the Hero Commission will permit Matsuko to give personal counselling? Manifesting a quirk at the age of five is quite rare, right? Because it's either at age four or at age nine."
Katsuki exhales exasperatedly, eyes trained on his pup's gleeful face and pulls his mate to hug. Izuku slumps his face on Katsuki's chest. He can tell that Matsuko's quirk stuff is taking a toll on Izuku. Good thing that it's not about quirk in general, though. Izuku is just worried because Matsuko is involved.
"We gotta think about that after the examination. We need to be certain first if it's a quick manifestation of someone using a quirk on him to harm him or something. The gathering was open to the public media, after all. Anyone could have done that. We're considering quirk manifestation, though. It is a possibility, after all."
Izuku nods and hugs him tighter. They watch their pup jumping while watching the other pups, both of his palms flat on the glass wall of the quirk testing room. It's a few minutes when a nurse finally calls for them.
"Bakugou pack?"
Matsuko beams at the mention of his surname, running and slamming his small body to Izuku's legs.
Katsuki grumbles and scoops his pup up, nuzzling the pup aggressively making Matsuko giggles.
"Daddy, stop! That tickles Matsun!" Matsuko whines while giggling.
Izuku's fond scent wafts and covers them both. The nurse smiles at them and opens the doctor's office door.
Behind the desk, doctor Shuzenji Denjo smiles at them. He's one of Recovery Girl's grandchildren. A beta, and his quirk is paediatric examination. He can detect everything on a pup. A disease, secondary presentation mishaps, quirk side effects, etc. It's an amazing quirk, and Izuku idolises the beta.
"Good day, Hero Dynamight. Midoriya-san," Denjo greets.
"He's a Bakugou," Katsuki grumbles. Izuku elbows his mate, who rolls his eyes and puts Matsuko down.
Matsuko takes off to the candy bar station, tiptoeing and eyes bright.
"Can I have a sugared sour tape, please?" the pup whispers, looking at Denjo with his sweet eyes, which is impossible because Matsuko got Katsuki's intimidating eyes. But Matsuko made it possible to look so puppy-like.
Denjo chuckles. "Of course," the beta then pulls a small brown paper bag and a tong, picking a few sour candy tapes and gummy worms, making Matsuko beams at the added treat.
"Thank you very much!" Matsuko beams and hugs the doctor's leg, before storming off to Izuku's side.
Denjo beckons them to sit, and Katsuki brings his little family to the couch. Denjo takes the couch across them, holding a metal board with the result of Matsuko's examination.
"Uhm, what's the verdict?" Izuku asks.
Denjo smiles at them. Katsuki holds his breath while Izuku grips his hand. Tight and grounding.
And then, Denjo speaks.
"Your pup has one of the most amazing and complex quirk I've ever seen."
Izuku gasps out loud while Katsuki stands up, cursing loudly that it made Matsuko flinch.
"Quirk?! We thought he's quirkless!" Katsuki screeches but his mixed anxious and happy scent is an indication that he's not gonna explode something.
Izuku pulls him to sit again, while Matsuko crawls on the couch beside them, a piece of gummy worm dangling on his lips.
"How complex? Is it the same with Kacchan's? Is it nitroglycerin, too? Or a different type of explosion?" Izuku asks, sounding frantic.
Denjo smiles at them and reassures them that he's going to explain it.
"I looked at his quirk, and I haven't seen it in action and haven't checked the soot, but from what I saw with my quirk, your pup's quirk has particles of potassium metal. Now, potassium metal reacts violently to water, and I guess he touched some water which pushed his quirk to react because of the chemical interaction. But that's not all. I only saw the particles of potassium metal on his palms and foot pads. His fingertips are a whole other stuff."
Denjo shows them the metal board, a detailed sketch of a hand on display with labels.
"His palms and foot pads secrete sweat with potassium metal particles, and when he wets them, he can activate his quirk. His fingertips, though, they secrete nitroglycerin sweats. Very much like Dynamight-san's. It is safe to say that your pup has a very explosive quirk, more complex and stronger than Dynamight-san's. And not just that. I saw a bit of fire quirk in his DNA. And a bit of quirk manipulation. I can see that he can manipulate his chemical related quirk, but not exactly sure how. That's why I said his quirk is complex. He's not a tri-quirk user, but it's possible that he can use fire and this manipulation quirk. We just need to research on it."
Izuku has a contemplative look on his face. He's obviously making theories and analysis inside his head.
Eventually, Izuku lightens up.
"My mom! He can pull little objects without touching them!" Izuku exclaims. "But it's not a whole other quirk, right? That means that's just a part of Matsun's quirk? And the fire one? Oh, my dad! He can breathe fire! He can exhale and inhale fire! He can stand up to multi million degrees fahrenheit! Oh my God! Kacchan! Is that why Matsun can touch Shoto's fire quirk?! I know he uses it with the lowest Celsius possible but it's not normal to touch fire without being resistant to it, right?!"
Katsuki would normally chastise Izuku for rambling, only because he knows that others usually get ticked off from it and he likes the idea of the only one being able to stand up with Izuku's rambling. This time, though, Katsuki uses his own intelligence.
"That's right. We didn't think about it that much whenever Shoto played with him. Shoto usually flames his palm or fingers, and Matsuko touches them without getting burned at all. And we thought he's quirkless. Quirkless or not, a person with no fire resistance wouldn't be able to stand against fire. Skin to flame contact would burn the skin, no matter how tame the fire is. But Matsun never burns his skin from it," Katsuki rambles himself, but he's looking at Denjo who has a very interested expression now.
"I think it's safe to say that his quirk is also an explosion. I mean, for registration, dual explosions must be recorded. With the potassium metal and nitroglycerin on his DNA. The fire and manipulation part of his quirk, though.. I have to examine that as soon as possible so he can train for it. Have you thought of contacting a professional quirk councillor? I can apply for the work for you, but I would need Aizawa's help on that."
Izuku gives the beta a grateful smile. "We were about to talk to you about it. We really want to recruit a trustworthy person, and we can only think of you."
"A professional counsellor would be better, still. I can only see how a quirk may work, but a professional counsellor will be able to conduct physical assessment and not just research. Still, just like what I said, I want to check his quirk myself. It's too complex and I know every detail about it. A councillor wouldn't be able to study it in a short time. Matsuko really needs to train as soon as possible. I would need Aizawa's help, though."
Katsuki nods in agreement. "Yeah. Aizawa can stop him if Matsuko will not be able to control this quirk. Also, why do you think his quirk manifested this late? And his grandparents' quirks are in his DNA.."
Denjo straightened his spine at the question. "I've thought of that while examining his DNA earlier. And my analysis is it's because of Midoriya-san's quirkless status."
Izuku perks up at that. It's the first time that he reacts positively at the mention of his quirklessness.
"I think I already know what you're going to say.." Izuku mumbles.
Denjo chuckles. "Because you're quirkless, but still holding mixed DNA of your parents, you passed that DNA to Matsuko. They didn't mix when it was in your body, which means there are two quirk DNAs in your blood. They are separated from each other, resulting from your lack of quirk. It's like your body was a vessel of two different DNA quirks, and passed it on to your kin. To Matsuko. But because he is not quirkless, the two quirk DNAs will not be separated. That will mix with his sire's DNA quirk. Though Dynamight's quirk is dominant, your parents' quirks are still there in your pup's quirk. It's a result of complex quirk biology. And I have to tell you that this is rare. Much more rare than Todoroki-san's dual quirk. Matsuko is not a tri-quirk user, but inheriting his prime alpha sire's quirk with the support of other two quirks, we really need to conduct a thorough examination. And I suggest not involving publicly registered counsellors. Or the Hero Commission. They might encourage Matsuko to train to be a hero. And also, his quirk is too strong, I must say. Disclosing the information is fine, I suggest. But it's really better to allow a smaller crowd to get a good check on it before Matsuko is able to control it for good. And not to mention that he has an intelligent dam and a great sire to support him for training. We shouldn't worry that much, right?"
At this point, Izuku is bawling salty tears now. Katsuki embraces his overwhelmed mate, Matsuko staring at Izuku like it's nothing new.
"You wanna check his quirk now in action? " Denjo asks, despite knowing what the response will be.
"Hell, yeah!" Katsuki exclaims and stands up, holding his omega mate on the left and scooping his pup's middle to carry Matsuko like a large pillow.
Denjo escorts them to the glass room, Matsuko gasping in amazement when one of the moderators opens the glass door and beckons him to enter.
"The glass room is visible from the outside, as you already know. It is also quirkproof, and has a quirk outrage detector. Once the detector notices abnormal quirk usage, it will moderate the quirk into neutral rate. So you don't need to worry about Matsuko getting hurt. This room was built by Nezu's team, after all."
Katsuki nods in understanding. He wonders how he would have reacted if his younger self would have examined in this kind of facility. But still, his parents had done a very good job taking care of him, aside from his foul mouth and default grumpiness. He can only be thankful and assured that he's able to give Matsuko a good treatment on everything about his pup.
The moderator puts dummy stuff in the middle of the room, Matsuko scowling at it. Katsuki and Izuku are outside of the room, watching attentively. They're not the only ones watching. The other pups and parents are watching, too. Matsuko is well known to the public, with too many endorsements as a baby to a pup, being the number 1 hero's kin..
Katsuki doesn't care if Matsuko messes up, he doesn't care how the public expects something grand from his pup. But he is also sure that Matsuko is a Bakugou through and through. Quirkless Matsuko was Katsuki's pride. Having a quirk wouldn't change that pride for the worse or better. He loves his pup to its peak limit. Just because he's suddenly having a strong quirk doesn't mean Matsuko is extra special. Katsuki learned that quirk is not everything, he learnt it the hard way. And Izuku is a witness to it.
Si Katsuki has no doubt that Matsuko will do good on this quirk assessment, only because he's amazing and a pure Bakugou. Not because of a new quirk.
"Do you remember how you exploded last night?" Denjo asks, holding a water bottle.
Matsuko nods, a Bakugou frown on his face.
"I'm not stupid like Dunce Face."
Denjo backtracks at that. The audio being audible to the outside of the room, the conversation being heard by the audience.. Katsuki rubs his face with his palms.
He can feel Izuku's glare behind his big ysl sunglasses.
"You can't complain," the omega huffs. "He learned that from you."
Back at the room, Denjo blinks at the pup. Matsuko blinks back.
"Dunce face.." Denjo parrots.
Matsuko nods. "Hero Charjibot."
"Chargebolt," Izuku corrects automatically like a well oiled machine, as if this is a common occurrence.
Denjo clears his throat and nods. "Okay. Uhm, so you remember how you exploded like last night. I want you to do it again. But this time, you have to target that mummy. It's okay though, if you can't. If you can explode without attacking that ugly mummy. No pressure." Denjo sends the pup a reassuring smile.
Matsuko frowns and scowls, glaring at the mummy in offence.
"Can't I have a Tetchutetchu dummy mummy instead?"
Katsuki curses behind his throat, pinching his nose bridge from exasperation. Matsuko can hold a grudge. And he's too much like Katsuki when it comes to pettiness. Of course, Matsuko's hate towards Tetsutetsu wouldn't just go away.
Tetsutetsu, Pro Hero Metalman, just outranked Red Riot by a thin margin. And Matsuko hates him for that reason. He's been mumbling about how his Uncle Eijirou is much stronger.
Idiot Eijirou of course cried and declared that Matsuko is his personal hero, which the brat took personally and seriously.
Now, he has this strong mindset that he has to beat the hell out of Tetsutetsu, and Matsuko always makes sure to make fun of the metal hero every time he visits the Dynamight Agency where Metalman is one of the commanding heroes.
Matsuko is not one bit scared that Metalman is an alpha. Or a Pro-Hero. All he knows is his Uncle Eijirou got sad for like.. A minute over the ranking. And he holds it dearly in his heart.
Katsuki's pettiness along with Izuku's strong sentiment is not a good mix. Look at Matsuko..
"We don't have a.. Uh, that kind of mummy," Denjo replies, a little reluctant and looking at both Katsuki and Izuku in search of help.
"He wants a Pro-Hero Metalman dummy," Katsuki explains to the moderator near them.
The moderator blinks, and then nods.
"We have a clone machine of Pro-Hero Creati. We'll get him the Metalman dummy."
After a few minutes of waiting, the moderator comes back with a new five set of mummies, all Metalman printed covers. Matsuko grins at the sight and Katsuki already feels a similar grin on his face.
He winces when he feels an elbow to his side, glaring at Izuku.
"Don't encourage him!" Izuku hisses.
Katsuki huffs. "Aren't we supposed to be supportive or something?"
Izuku whines. "You know what I mean!"
Katsuki only rolls his eyes and turns his attention back to his pup.
Denjo is opening the water bottle, and pouring a decent amount of water on the pup's hands and shoes.
Not even ten seconds, Matsuko snarls at the Metalman dummy and screams.
"Die, you ugly copycut!"
BOOM!
Matsuko explodes, from his extended hands to his feet, ruining his sneakers. Izuku gasps as the glass room erases the lingering smoke automatically and they see Matsuko, beaming at the three destroyed mummies.
"Aaaahhh! I explode them! I'm like Daddy now! That's hella cool!"
"Language," Izuku exhales, shakily and amazed.
Matsuko is covered in soot, but he's not hurt. The pup is jumping now, and without a word, extends his hands again to shoot a blasting explosion to the mummies.
But something strange happened.
The explosions are like small balls of fire, coming out of one from each palm, and the balls of explosive gases dance around each other, all the while rocketing towards the mummies.
BOOM!
Each ball of explosion goes towards the dummies, separately.
Katsuki blinks. And then gapes.
"What the flying fuck, Matsun?! What horseshit fucking shit is that?!" Katsuki exclaims, grinning like a maniac.
His pup can fucking manipulate his quirk. Can fucking produce mini balls of explosion and manipulate them where to go, doesn't fucking need AP Shot to attack a target. What the actual fuck?!
Matsuko is jumping again, and when he crouches down, gleeful and so happy, he shoots up to the ceiling. There are explosions from his foot.
Those are explosions from the potassium metal particles from his sweat.
Which means he hasn't used his nitroglycerin quirk from his fingertips.
Matsuko then turns to them, eyes misty and lips wobbling, but beaming like he's the happiest pup on the earth. And he probably is.
"I have a quirk! Daddy! I have a quirk! Look!"
Matsuko raises both of his hands, and little explosions come out of his... Fingertips.
They shoot out like bullets, and the glass room vibrates, a warning of quirk outrage, but Katsuki and Izuku worry little because the glass room neutralises Matsuko's nitroglycerin quirk.
The moderator opens the room, Izuku running inside to retrieve his happy pup while sobbing happy tears.
Denjo goes out of the glass room, gaping and unbelieving.
"He's incredible.." The doctor whispers in so much amazement.
Katsuki crosses his arms, chest puffing, large grin on his face.
"Of course!" Katsuki growls, victorious. "He's my pup, after all."