Chapter Text
C.13 Fuzzy Family
After the 'interesting experience' with the Pull Ups, Midoriya is ready to play and Katsuki can not seem to get him to stay still and get dressed. So far Izuku just runs around the room clad in a diaper while Bakugou searches through the chest at the back of his closet for today's outfit at an impossibly slow pace, since the other teen in the room keeps interrupting him.
"DADDY LOOK AT MY DRAWING!"
"That's very pretty, baby."
"DADDY READ ME A BOOK!"
"Daddy's busy finding you clothes right now."
"NOOOOOO, READ ME A BOOK! I DON'T WANNA DO CLOTHES!"
"Inside voice, Izu. I'm busy right now I will read to you at nap time."
"NO, READ TO ME NOW!"
"That is not how we ask for things, Izuku."
"AAAAAAAAAAAAAAHHHHHHHHHHHHH-"
The dramatized sobs continue for about five minutes until Izuku gets distracted by his blocks and becomes focused on building a pyramid. Bakugou knows he should not be so picky, but it is so hard to focus and his parents are fashion designers, he can not just choose anything and throw it together like an extra.
On the upside though, this is a whole other side of Midoriya that Katsuki had not seen since he was little- though the blonde could not help but think that it was probably his fault since he had bullied all the extrovert and openness out of him.
Finally deciding on a pair of overalls that end in shorts and a cute baby green top with 'Daddy's good boy' in big white sparkly letters on it. Knee high fuzzy baby green socks are added to the ensemble and the outfit feels ready.
It's a struggle to get Midoriya to stay still long enough to wrestle him into the clothing, and Izuku refuses to pull the straps of the overalls over his shoulder, claiming he wanted his shirt to be seen. Bakugou pretended to be frustrated, but it had no fire behind it because the whole situation was just plain adorable.
Then Katsuki has to sit in the hallway and watch Izuku toddle back and forth from his room to Bakugou's. Midoriya was getting all his old stuffed animals and regressing supplies and moving it to his boyfriend's dorm for no reason.
Izuku has a cute diaper butt the whole time and Katsuki can not help but take a few pictures of his boyfriend and makes it his home screen (not his lock screen because that would be dumb).
+++
"KACCHAN!"
"Yes, Izu?"
"COME HERE! COME HERE! YOU GOTTA MEET MY STUFFIES!"
Bakugou can't help but feel the excitement in Midoriya's voice, rushing to stand up and walk into his now messy dorm. Izuku is laying in a pile of blankets he had dragged from his room and both his stuffed animals and the ones he had found hidden away in Katsuki's closet.
After half an hour of being introduced to the 'Fuzzy Family', Bakugou is buried by what felt like a ton of blankets and other soft items. Izuku was currently trying to create a fort but it kept falling apart because he kept trying to sit on it for no reason, and it was finally time for lunch.
Usually on school days everyone would be hustling to the Cafeteria to snatch a bite of Lunch Rush's famous food. Right now though, Bakugou was holding Midoriya on one of his left hip with his arm supporting his diaper butt while making cold soba because it was easy and the dorm always had the ingredients thanks to Todoroki.
It was simple and easy enough while having your boyfriend attached to you, except when cutting the green onions. Midoriya would not be put down. Bakugou had tried three times, and each times Izuku had literally crawled back up his leg until Katsuki placed him right back around his waist.
Chopsticks do not seem to be something Izuku wants to use, and instead he makes a mess eating with his hands and playing with his soba. It took Katsuki about an hour to make, eat, and clean up the whole lunch experience.
Midoriya is a mess after the meal and hates the feeling of all the old germs all over him. Bakugou cleans him up a bit, but it is very obvious that his efforts are not good enough.
"Bubbbbbbles!"
"You want bubbles baby?"
"BATH TIME!"
A bath? Bakugou is not sure what to do, he really needs to talk with a not regressed Midoriya about ground rules and what they are both comfortable with. Katsuki just does not want a rift in the trust they had built together over the past years at UA.
After reading a few articles about helping a little out of age regression, Bakugou is pretty sure he knows what to start with. It was kind of the opposite of everything he had tried to get Midoriya into little space. Most sites were about getting into a regressed mindset, but Katsuki was confident he could get it done once he started.
C.14 Not Daddy's Baby or Boyfriend
After bringing Izuku back to the child themed dorm room and changing him into some more age appropriate clothing. Then, as Midoriya took a quick nap, Bakugou decided it was time for a change of decoration. Out came the black curtains, carpet, and sheets and the toys, stuffed animals, and age regression products went back into the closet.
An overflowing hamper of dirty laundry was all that was left, and Bakugou made sure that it was thrown into the wash while his boyfriend was passed out. Katsuki was exhausted by the time he finished cleaning up Midoriya's room and hiding all the evidence that anything had happened there. Then he carried the smaller sleeping male to his own room.
"Hey Izu, it's time to wake up."
"Hmm? Daddy?"
A piercing warmth shot through Bakugou's heart as a sleepy freckled face was rubbed against his shoulder in attempt to wake up. Tired green eyes fluttered open slowly and began to water as he realized he was no longer in Katsuki's cozy room.
"Shh, shh, you're ok baby, can you start calling my Kacchan again?"
Confusion then upset shame and discomfort twisted Izuku's face.
"B-but... No Daddy? You don't want Izu?"
Tears started spilling over his puffy pink cheeks and Katsuki panicked, those little drops of water made him want to hurt somebody.
"Shit- no baby, of course I want you! I just need you to be big again so we can talk about you. I l-love you? I love you so much!"
It was like Bakugou was just hit by a wrecking ball, he loved Little Izuku. He loved the cuddles, the baby talk, the trust and care that was all on him. It was perfect- all of it made him feel amazing. And yeah- now he realized that it was ok to tell Midoriya what he had been putting off for awhile- Bakugou Katsuki was in love with Deku. As soon as Izuku was out of little space, he was going to tell him.
"W-weally? M'kay Da- Kacchan, I'll try my best!"
"Thank you ba- Deku."
It felt cold and neither of them liked it much, but as soon Izuku was back to his normal headspace, the nicknames would feel more than right again. Bakugou was winging it, but as long as he just kept treating Izuku like the teenager he was, it would start working right?
"Ok Deku, let's do some homework."
The two gays later fall asleep laying next to each other on Midoriya's All Might themed bed reading next weeks chapter of the science book assigned by the school curriculum. In their sleep they both snuggled up next to each other, trying to get as close to the other as the possible.
+++
Izuku wakes up Saturday morning disoriented but relaxed. Last night was some of the best sleep he had gotten in years. Thinking back on it though, he did not really remember what had happened. Midoriya had not been this relaxed even when he had last regressed- no... oh no no no.
Panic swept through the younger teen as he broke out in a cold sweat, shaking slightly as he quietly got up, one eye focused on his boyfriend to make sure Izuku did not wake him- if Bakugou was even still his boyfriend. Midoriya did not remember much of what happened, but he did remember how amazing it felt to have Katsuki as his Daddy.
"Ugh, stupid Izuku, how could you do this to yourself?"
Midoriya whisper screamed at himself as he tiptoed out the room and clicked the door shut behind him. Now what was he going to do? He could not stay here and face Katsuki. But it felt a wrong just leaving him when he had stayed with Izuku through the whole age regression period. Bakugou might not want him anymore, but Izuku would always want him and be in love with him.
+++
"Fuck- fuck- PICK THE FUCK UP-"
"What do you want brat?"
Bakugou was ready to pummel anything that pushed his buttons the wrong way right now. He had woken up alone to an awful 'goodbye' text from the love his life, who had not even given him the time of day. Midoriya had just automatically assumed that Katsuki would just chuck him away with trash- though he did have a right to think that. And that just made the blonde even more upset.
"Can you ask Inko where shitty Deku might be? He made some of his stupid assumptions and now he's gone!"
"Shitty brat! Did you mess up with that absolute angel again?! You don't deserve him. This is the last time I help your ungrateful ass!"
"YEAH YEAH, THANKS HAG. Just text me."
"EXCUSE ME?! HAG-"
BEEP
Bakugou hung up as fast as possible.
Hag: YOU FUCKING BRAT! HOW DARE YOU HANG UP ON YOUR MOTHER? If I didn't like Izuku so much, I would leave you out to dry to teach you a lesson!
Me: Yeah sure hag, just hurry up and tell me what Inko said.
Hag: Inko said Izuku's at home and won't come out of his room or talk to her. Inko is really worried and says that if you're coming, she'll make sure to keep him there until she goes to work.
Me: Thanks mom.
Yes, Bakugou had pulled the 'mom' card. He was actually really thankful of his mom right now- but he was not going to say that. Over his dead body. But Mitsuki would get the message.
C.15 Don't Care want that Derriere
On the bus to Mustafu Bakugou rereads the text Midoriya had sent him. Every bit word of the message makes him want to shuck his phone onto the street and let the cars run over the piece of tech until it's flatter then Todoroki's monotone voice.
Deku <3: Kacchan, I know you don't want to be my boyfriend anymore and that is devastating. You are my everything, and you still will be years from now when you're married to an amazing person and I'm all alone wishing you were still with me. I know I don't deserve you, so that's why I'll watch from the sidelines as you take the world on by storm. I've loved you since we were just babies and I hope that before I became so weird and wrong you felt the same. Though I understand if you didn't, I was never even close to your level of amazing- if I was even ever amazing at all. I'll leave you alone so you don't have to feel guilty about breaking up with sorry old me. I'll always be cheering you on, just like before! Goodbye Kacchan.
And then the little asshole had blocked Katsuki! Not even waiting to see if Bakugou would call him on his absolute bullshit. Everyone avoided the angry blonde as he stormed off the bus, stomping down the calm streets of his hometown all the way to Inko's apartment.
"Katsuki! I'm so glad you're finally here. 'Zuku is upstairs- he's acting really strange and won't tell me what's going on, much less talk. Here's the key to the apartment, just leave it under the rug when you leave. I'm late for my shift but I'm counting on you to take care of my baby, Katsuki!"
Inko was right outside the apartment building, jumpy and ready to go. Bakugou was hit by all the famous Midoriya mutterings a mile a minute, but he was used to it by now. The silver key was shoved into his hand and after a quick hug, Miss Midoriya was running down the street in a rush.
Katsuki was up the apartment stairs in seconds, up to the door he visited once a month on weekends for dinner with his own family. Locking the door behind him, the UA student walked down the small hallway to Midoriya's room, knocking lightly.
"Please go away mom, I can't face the world right now. Kacchan hates me again!"
"WHEN THE FUCK DID I SAY THAT?! STUPID DEKU, STOP ASSUMING SHIT AND LET ME IN!"
A shocked silence met Bakugou's loud shouts of disapproval, and then the door was opened by a puffy eyed Izuku. Katsuki immediately punched him hard in the gut, earning a pained grunt from his boyfriend.
"YOU FUCKING ASSHOLE! HOW DARE YOU ASSUME HOW I FEEL? I'LL KILL YOU! I FUCKING LOVE YOU SO MUCH! I LOVE BEING YOUR BOYFRIEND, YOUR BEST FRIEND, AND YOUR DADDY! IF YOU EVER THINK OTHERWISE YOU TALK TO ME FIRST BEFORE MAKING CRAZY DECISIONS AND LEAVING SHITTY PITY MESSAGES AND BLOCKING ME!"
And then the blonde swooped the shorter boy into a tight hug, pushing into the other's room and throwing their bodies onto the bed. Midoriya was very confused, having a little trouble wrapping his head around the fact that Bakugou had just confessed his love in so many ways.
"Ka-Kacchan- I love you too. So much! And I'm sorry, I am just so insecure sometimes and I thought that... that what I was doing was something to be ashamed of. So many people think that Age regressing is weird or disgusting and so I assumed yo would feel the same-"
"You fucking idiot. I love you, which means I love all of you. If I didn't accept this part of you and love every bit of it just like the rest, you shouldn't ever have wasted your time on me again. Even if I didn't want to be your CG, I would make sure you still got any support you needed. Besides, people think that gayness is disgusting and weird, just like other religions and even the idea of other races. Just because some people think it is gross doesn't mean it is or that everyone will automatically agree."
It was a longer more heartfelt expression than either Bakugou or Midoriya had expected, but it brought heavy tears to the laters eyes. Izuku did not know how he could have ever lived without Katsuki as his boyfriend.
"I love you too, Kacchan. Does this mean you don't just want to be my boyfriend but my um... ya' know?"
Midoriya's voice cracked at the last part as he turned bright red and looked away from a smirking Bakugou. The blonde chuckled and leaned down to whisper into his baby's ear, causing the other to shiver and whine.
"Oh I'm definitely still your Daddy, baby. Besides, I would do anything for your thick ass."
"KACCHAN!"