· On why Kirishima wouldn't like Bakugou's mum

Some people have been asking me why I included "Kirishima doesn't like Bakugou's mum" in my favourite kiribaku headcanons list. So I sat down and wrote a 1k-word essay on the subject. Enjoy
Okay, so first of all, full disclaimer, this is all a result of my own headcanons (that have been inspired by some canon content), but still remain as that, headcanons.
If you agree, good. If you think I'm reading too much into it, well, probably you're right. But it's what I do!
We don’t know much about Bakugou’s mum besides the fact that she works in the fashion industry and that she’s... well. Pretty aggressive.
The scene where Aizawa comes ask for the kids’ parents’ permission to move into the dorms is the one time we get to see Katsuki’s parents and their personalities, and while I can understand the appeal of making Mitsuki rough and aggressive (his son really takes after her!) +
there’s just something that doesn’t feel right. We see her hit Bakugou multiple times while his teachers are there, she even pushes his head down into an apologetic bow, and we know this must have been normal during Katsuki’s childhood because of what he says during the r.course
That’s how he was raised! What does that mean? That he received a few slaps every time he was being a brat? That his mum would yell at him and he didn’t hesitate to raise his voice back until she lost her patience? (is that why he talks so loudly all the time now?)
Not the ideal environment for a kid, and yes it probably has a lot to do with all his anger issues as a teenager.

But what really /really/ gets to me is this one particular panel.
I understand this probably might have been drawn as a gag panel, “Oh look, they’re fighting again haha! That must be lowkey uncomfortable for the teachers!”.

But I don’t think calling Bakugou weak for being kidnapped is funny. And I don’t think he just /brushed it off/.
The guilt and self-hate that must have (still are) eating at Bakugou, that would build up to the catharsis during Deku vs Kacchan 2, must’ve only been worsened by comments such as that one.

So yeah. No. Not at all what Mitsuki should’ve said as his mother.
If we know little about Bakugou’s parents, we know nothing about Kirishima’s family (Horikoshi please this is me begging you). But we /do/ know Kirishima, though: sweet, friendly, all sunshine smiles and words of encouragement!
He is the opposite of Bakugou in that aspect, and that makes me think that his mums are completely different from Mitsuki too.
I imagine (again, we are entering headcanon territory) Kirishima was raised in a caring environment, showered with love and affection.
He was probably a pretty well mannered kid too, so he didn’t argue with his mums often, and they never raised a hand against him.
So now, what do you think Kirishima’s opinion of Bakugou’s mum would be, if he ever met her?
I don’t think Katsuki talks about his mum much (if at all) with his classmates. Why would he. But then again we saw the “I was raised this way” quote earlier, so let’s say Kirishima and he talk about her at some point, for the sake of this argument.
Maybe they’re on a study date in Bakugou’s room, Kirishima still finishing his homework while Bakugou reads laying on his bed. Kirishima’s been telling Bakugou about how excited he is to go back home for the holidays because he wants to see his mums, that they’re gonna +
go shopping and cook together. Bakugou remains silent, humming from time to time to signal he’s paying attention, but not looking at Kiri. There’s silence when Kirishima stops talking, and since it doesn’t seem like Bakugou is gonna say anything on his own accord, he asks.
“Hey, I just realised, you’ve never told me what your mum’s like.”
Bakugou scoffs, “she’s fucking annoying.”
“Oh, come on,” Kirishima teases, “she can’t be that bad.”
Bakugou shrugs. His brow is furrowed and his shoulders tense. He turns to his side, back to Kirishima. +
“I’d much rather stay here training, holidays‘re a waste of time.”
Kirishima’s face falls. It’s not just Bakugou’s words that get to him, but his whole body language. It’s not like when he refuses to hang out with the class in the common room on a week day, or when+
he reluctantly agrees to go to the game center with their friends. He looks /truly/ uncomfortable. The idea of not enjoying the precious days one gets to spend with their family is... depressing for Kirishima. Just what kind of environment did Bakugou grow up in?
If Kirishima were ever to witness Mitsuki calling Bakugou weak, I’m sure he would snap and jump into the argument to defend Bakugou. Knowing Kirishima’s backstory, and how bad he struggled with confidence-issues in middle school, this is probably one of the worst insults for him
and it’s being thrown at one of the strongest people he knows, a kid he’s grown to admire and whose words serve as inspiration for him!
So Kirishima cannot accept it. He would stand up and praise Bakugou for all he’s worth, his manliness and his ambition, his power and his technique, with such confidence and determination that it would leave Mitsuki at a loss for words.
TL;DR: What I’m trying to say is that Bakugou’s relationship with his mum seems uncomfortable and stressful, the kind of mother-son relationship that would make Bakugou feel locked in and constantly on edge in his own house, maybe even not appreciated.
Kirishima is perceptive enough to notice that, and that’s why he doesn’t like Bakugou’s mother.

the end
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