🧵#bkdk #ktdk #bakudeku, aged-up dads!bkdk, quirked!Izuku, family...

@sakura3tring
Sakura (Kura) 🧡💚🌸@sakura3tring
41 views Aug 14, 2026 ~13 min read
Advertisement
1
🧵#bkdk #ktdk #bakudeku, aged-up dads!bkdk, quirked!Izuku, family bonding
-
It started with a green-eyed rabbit.
2
The number one hero, Bakugou Izuku, had been hit by a quirk that turned him into a small, white rabbit with wide green eyes.
According to the police report, the quirk only lasted about six hours, so his husband, Katsuki, decided to have a little fun.
3
"C'mon, Sunshine, it'll be fun," Katsuki muttered to his husband, who he had carefully cradled in his arms.
Izuku gave him a withering look, or the best he could manage as a cute little bunny, making Katsuki snicker.
4
He arrived at home, with Izuku in tow, and knocked on the door before letting himself in.
"PAPAAAA!!!" squealed Amisa, their seven-year-old daughter, her spiky hair adorned with a princess crown and various hair clips, who ran to hug his legs.
5
Katsuki quickly shifted Izuku to one arm, so Katsuki could ruffle Amisa's hair, making her giggle and swat his hands away.
"Amisa-chan, slow down!"
Katsuki chuckled as their sitter came running after Amisa, and skidded to a halt as she spotted Katsuki.
6
The girl had dark, semi-long, straight hair, with a yellow lightning bolt, and amber, almond-shaped eyes.
"Oi, Hana, how much do I owe you?" Katsuki asked, but the girl, Kaminari Hana, quickly waved him off.
"No trouble at all, Amisa's awesome to sit for"Hana replied with a grin.
7
She raised an eyebrow at Izuku, who pinned his silky white ears back and nosed into the crook of Katsuki's elbow. "Is that...?"
This was so embarrassing!
Katsuki gave Hana a wink and a nod, but raised a finger to his lips, making Hana hide her smile behind her hand.
8
"Alright, see ya next week, Katsuki-san" Hana said with a grin.
Katsuki ruffled her hair. "Drop the '-san,' kid, I've known ya since you were in diapers."
Hana huffed and rearranged her hair, rolling her eyes.
9
"Alright, alright" she replied, but she was grinning. "See ya, Uncle Katsuki."
Amisa waved. "Bye!!!"
Hana waved with a slight smile as she walked down the front walk.
10
"Oi, Hana!" Katsuki called after her, making Hana turn.
"What???" she shouted back from the sidewalk.
"Tell Kaisei to quit picking fights, would ya?!" he said, referring to his eldest son, in Class 2-A with Hana.
Hana laughed aloud. "Good luck with getting him to do THAT!"
11
Kaisei, like his father, was extremely competitive.
Katsuki sighed, and he felt a puff of air hit the inside of his elbow as Izuku sighed as well.
Hana left, and Amisa asked, "Papa...is that a bunny?"
12
Her narrow green eyes were shining brightly.
Katsuki grinned. "Yep, sure is," he replied, scratching Izuku behind the ears.
Izuku felt his foot thump against his will. But that...felt.../amazing/.
13
"Can I hold him?" Amisa asked, holding out her hands and sticking out her bottom lip.
"Can you be gentle?" Katsuki asked, raising an eyebrow.
Amisa huffed, so similar to Izuku Katsuki almost lost it right there. "Papa. I am /seven/. Not four!"
14
Katsuki pretended to consider this, stroking his chin and trying to suppress a smile. "hmm..."
Amisa stomped her foot. "PAPA."
"Oh, alright." Katsuki pretended to relent, gently handing Izuku over to his youngest.
15
Amisa giggled excitedly, gently cradling Izuku in her arms.
"Be careful with him," Katsuki warned, though his crimson gaze was soft.
"I promise, Papa." Amisa replied, stroking Izuku behind his ears, and there went his foot again, /thump thump thump/.
16
"Have fun," Katsuki said, to both Amisa and Izuku.
Amisa sank back down into the beanbag where she'd been before, with Izuku, and set him down on her chest.
Immediately, Izuku flopped on his side, nuzzling against her cheek.
Amisa giggled. "That tickles!!"
17
But no sooner had they settled in than did the front door slam open, then shut, making both of them jump as Amisa's second oldest brother, Hisato, came stalking in, throwing his backpack to the side and kicking off his shoes.
18
Hisato's green curls fell in his eyes yet again, and he shoved them out of his face, wincing as his fingertips made contact with a red mark near the corner of his crimson eye.
19
"Oi, what'd I say about the door?" Katsuki's voice echoed from the kitchen, mixed with the sounds of sizzling peppers and rice.
"Don't even start, old man," Hisato shot back.
20
Izuku's ears went back again, noting the fresh bruise on his middle son's face.
/Not again.../
Katsuki poked his head out. "Don't sass me, kid-" he started, his eyes narrowed.
21
But then his hand tightened around the handle of the utensil in his hand at the sight of the mark.
"Shitty day?" he asked, making Izuku thump his foot, making Amisa giggle.
/No cursing in the house!/ Izuku scolded mentally.
22
"Yeah, about as shitty as you can get, yknow, being /quirkless/ and the son of the top two heroes in the country," Hisato replied, deadpan.
Izuku noted Katsuki's hands starting to tremble, his knuckles white.
23
Katsuki reached out his free hand, to try and touch the fresh mark on his son's face, but Hisato flinched away.
"Who. Did. It. I swear to god I'll blast them to Mars," Katsuki hissed.
"I'll blast them into the SUN!" Amisa declared, narrowing her own eyes.
24
Izuku put his head on his front paws. Amisa really was Katsuki's girl, he had to admit.
But Hisato laughed, in spite of it all. "And what would the media say?"
"FUCK the media," Katsuki said, making Izuku thump his foot again.
25
Hisato snickered, and continued to speak with Katsuki, but Izuku couldn't make out what they were saying, because his daughter scooped him up, and plopped him down so he was facing her, little wiggling nose inches from her own.
26
Amisa looked deep into his green eyes, and her own green eyes widened slightly.
"...Daddy?" she whispered.
Izuku booped his nose against hers, and smiled internally.
Despite being Katsuki's girl, she definitely had a bit of him, in there, too.
27
-
holy crap I wasn't expecting this thread to take off I'm still writing it atm, HELLO ALL :D
but if you'd like more bkdk kid content while you're waiting, check this out :D

@sakura3tring
Sakura (Kura) 🧡💚🌸@sakura3tring
Vignettes!
---
Here, you'll find little scenes where I'm feeling out how characters will interact in this universe! all canon to the NewGen AU ofc!
x.com/sakura3tring/s…
28
hello I lied about waiting until tomorrow bc the writing gremlin has SEIZED me and I will be following it wherever it decides to take me so forgive me if the remainder of this thread isn't exactly "polished"
Raw emotion incoming with a happy ending, I promise
-
29
Amisa breathed in, soft but sharp. But then, giggled quietly.
And then her gaze turned soft, and looked wise in that way only young children can be. "Go be with Hisa, daddy" she whispered, as Katsuki and Hisato finished speaking, and Katsuki returned to the kitchen.
30
The second Katsuki was out of view, Hisato's brave face, his smile, fell, and he pulled his hoodie hood over his face.
Izuku's ears drooped. He related to his son more than he could ever know. Putting on a brave face, a smile, so those he loved wouldn't worry.
31
Hisato started to walk towards the stairwell, and Izuku squirmed out of Amisa's arms, dashing over as fast as his little legs could go.
Slipping on the hardwood, but he had to catch Hisato, he had to-
32
He skidded into his middle child's ankle, making Hisato look down, red eyes full of confusion.
"Amisa, when did we get a rabbit??"
Izuku flopped on his side and looked up with big green eyes.
33
"Nooo, it was my turn!" Amisa feigned frustration.
/Clever girl,/ Izuku thought.
Hisato smirked. "He's mine now," he declared, scooping Izuku up.
Yes!
34
"Hmph!" Amisa pouted. "...bring him back down soon, 'kay?"
"I will," Hisato promised, walking upstairs.
Gray afternoon light dimly lit the stairwell. Quiet, until the clatter of raindrops being blown against glass began.
35
Hisato breathed a sigh of relief. "Beat the rain," he muttered as he reached his room, and settled in on the window seat, to watch.
He set Izuku on his lap, and sighed when he saw strands of white all over his black hoodie.
36
"You're lucky you're cute, furball," Hisato grumbled, but scratched Izuku behind the ears.
/Thumpathumpathump/ went Izuku's leg, again.
"Scratch that, adorable," Hisato said, snickering.
37
But his voice trailed off into silence, and for a few moments, that was all there was, filled only with the sound of the rain.
38
-
(TBC! gotta finish some work and later I'll hopefully be able to finish this off)
39
-
After a while, Hisato reached up to the mark on his cheek and winced.
"I'm so fucking tired of this..." he muttered to himself.
And Izuku understood.
He understood that feeling better than anyone.
40
What he didn't expect was for Hisato to grab his notebook from his desk and crouch in the window seat, by the dim light filtering through the storm clouds, and take his frustration, flipping so fast through the pages that Izuku worried they'd rip.
41
He put a paw out, stopping the page, and found...
/Are those...?/
It was a diagram for powered flamethrower gloves, carefully thought out, with neat labels and handwriting.
There were even safety measures in mind...
42
Before Izuku could see more, Hisato flicked his paw away gently, with a finger.
"Move that, buddy, I need to do this," Hisato said, and kept flipping until he reached a clean page.
43
Then, he grabbed the pencil from behind his ear, and started sketching, muttering under his breath as he went.
A similar design to the flamethrower gloves, but instead of fire...
44
Izuku realized that the small red mark on his son's cheek wasn't a bruise...it was the beginning stage of frostbite.
"Freaking Shimoda, with his damn ice quirk... well what if I /made/ his quirk and used it better than him?! Huh?! What then??" Hisato said, a manic grin crossing+
45
his face as he sketched.
He added a backpack with a big tank. But then he erased the big tank, shaking his head. "Too bulky... I need to do more with less..." he thought aloud.
He reached over absentmindedly with his free hand and stroked Izuku, who leaned into his son's hand.
46
He enjoyed the pets, despite himself. And the time with his second son, who shut himself away so much... He couldn't remember the last time they'd had this much quality time.
He sprawled out, and Hisato smirked. "Like that?"
47
Hisato thought, stroking his chin... then grinned.
"Easy! Don't concentrate it, I need to SPRAY it so less gets over a larger area! It's the same effect, with less!"
He scratched out the nozzle on the gloves' palms and added smaller nozzles to the fingertips instead.
48
"I'll show them..." Hisato whispered to the bunny. "I don't have much time left. I'm almost fourteen."
Izuku squinted his small eyes at that. What in the world was his son talking about?
But the next thing that left his second son's lips made Izuku's blood run cold.
49
"I've gotta prove to them I don't need dad's quirk to be a hero."
/What?/
What in the world was Hisato talking about?
"With my designs, I don't need ANY quirk at all to be a hero." Hisato said, setting his jaw.
50
"Anybody can be a hero...even somebody like me. I'm gonna be the one to prove it." Hisato brushed his green curls out of his eyes again, cleaning up his sketch.
51
"Dad had that dream...but now he has that quirk, it was /given/ to him. Sure he made it his own and all, but he isn't quirkless anymore is he?" Hisato said.
Izuku's ears drooped slightly. That was true.
52
But in that moment, Izuku saw himself in his son, more vividly than ever before. That same determination in his eyes. Despite all odds, his son wasn't going to give up, was he?
53
But what was that, about...
"I'm almost the age dad was when he got his quirk... and I gotta prove myself before then" Hisato muttered. "That I can keep MYSELF safe."
Izuku remembered the marks on Hisato's face. Almost every day, this one by his eye the latest in a long series.
54
"I know they want me safe, I know they know I want to be a hero, but I don't /want/ One for All, and..." Hisato whispered, trailing off again.
The silence said what Hisato didn't want to.
55
The pain...
Izuku looked down at his right paw. For once, his fingers didn't ache, despite the rain pouring outside.
The pressure, too... Izuku remembered stepping into his first Sports Festival, told to show the world that he was there. Of being the one his friends looked to.
56
Of leaving UA to protect them, to try and face All for One alone.
The title, that he still carried.
One for All had so many strings attached, so many more than Izuku could ever have realized when he told All Might yes, all those years ago.
57
Izuku would never change a single thing.
But not for a second had it crossed his mind to pass this power on to his son.
But in that moment, he knew he wouldn't.
58
And suddenly, he felt the quirk wearing off. He was growing, his clothes returning, and Hisato, so much like himself Izuku couldn't help but smile, was so engrossed in his notebook, he didn't even notice.
59
Izuku pulled the thirteen-year-old boy into an embrace, resting his head atop that familiar nest of green curls.
"Never," was the first word out of Izuku's mouth, trying to keep his voice level, but failing as tears leaked out of his green eyes.
60
"Dad??" Hisato said, so shocked, but Izuku went on.
"This power will die with me," Izuku swore.
And then he leaned down, and looked his son in the eyes, crimson meeting green as he placed his hands on Hisato's shoulders.
61
Izuku looked at his son. Same freckles, same unruly green curls. His father's narrow red eyes, but they held the same determination.
It was like looking in a mirror.
62
And so Izuku told his son what he wished he could go back in time and tell his past self.
"You CAN become a hero, Hisato. With or without a quirk. I haven't doubted you for a second, do you hear me?" Tears welled over, rolling down his cheeks.
63
Damn it, sometimes he wished he wasn't still such a crybaby...
But then Hisato wrapped his arms around his dad tightly, pressing his face against his shoulder. "Dad, I..."
A sniffle.
64
Izuku held him tighter. "I know. Believe me, I know."
"I love you, dad..."
/Don't cry, don't bawl, don't sob, don't you dare/ Izuku scolded himself. "I love you more than you will ever know," he replied.
65
And so, for a minute, father and son just stayed in that embrace, before...
"...so you were a rabbit. How...?"
Izuku chuckled softly, wiping his eyes. "That's a long story..."
66
-
THE END!! Thank you so much for reading!! ^^ If you like bkdk, check out my pinned post for more fics, or consider following me if you'd like to be notified of when I post! (I write quite often, or will be soon, I'm getting back into the habit)
67
Also, if you'd like to know more about this AU where Katsuki and Izuku are grown up, are pro heroes, and have kids, check out this post! There's mini-fics in there and more! :D

@sakura3tring
Sakura (Kura) 🧡💚🌸@sakura3tring
#bkdk kids/New Gen AU Master Post
Actions
What You Can Do
  • Export as PDF or Markdown
  • Batch Export to Notion
  • Bookmark & Highlight
  • LinkedIn & Instagram Carousel Maker
Create Free Account

Includes 7-day Premium trial

Advertisement