Hello there!
Is that some enraged, protective Dad Might I see here? I’m all for it!
Though, I can’t think of a situation where Toshinori would actually be witness to the bullying (because that’s what it is) of Izuku’s former teachers. Before U.A., Toshinori and Izuku only met up at the beach, far away from his school. If there wasn’t a situation where one of Izuku’s teacher would show up there through pure coincidence and then proceed to insult Izuku even in his free time, then I don’t think Toshinori knows about the teacher’s treatment of Izuku.
I do think that Toshinori knows about the bullying though. Izuku shows many symptoms of a former bullying-victim, and I headcanon that Izuku showed up at the beach after being roughed up by his classmates at least once. (Look here for that headcanon.)
And I can also imagine that when there should be a middle school reunion (like in this headcanon), that Toshinori (and the rest of the class, too) would accompany Izuku. Like I said, Toshi probably knows that Izuku wasn’t happy in his middle school class at all, and he isn’t one to let his student alone in such a situation.
Imagine the utter disbelief when All Might (by now, everyone knows his true form) shows up with little, quirkless Deku. The utter shock of former classmates and former teachers when the number one hero, a legend, steps into the room side by side with Deku, followed by twenty others – nineteen children and one teacher who seems to be carrying a sleeping bag over his shoulder.
The former bullies would be shell-shocked, jaws slack and eyes wide, when Izuku says something to All Might, smiling nervously, and the Number One laughs aloud and pats the green mop of hair as if to say “It’s okay.” The familiarity Deku of all people has with someone as All Might is, quite honestly, terryfiying for the people who once used to make Izuku’s life a living hell. And the little, panicked question of “Did he tell All Might about us? About what we did?” weighs heavy on them.
It’s only a question of time until one of the middle school teachers steps up to Toshinori, who keeps at the sidelines together with Aizawa and just observes while his students raid the reunion, and asks politely how it is possible that these two heroes are accompanying Midoriya Izuku, of all the people.
(It’s his first mistakes of a few to come.)
Toshinori and Aizawa exchange a look, before Aizawa says, slowly. “He is our student.”
“Your s-student?”
“That’s what I just said.”
“Aizawa-kun, please. Don’t scare the poor man.” Toshinori smiles, but there is a cutting edge to it, nothing reassuring, just straight out terrifying the middle school teacher. “Excuse me, sir, but is there a problem with Izu-… Midoriya being our student?”
“W-Well,” the man stammers, laughing nervously. Why is he sweating? He shouldn’t be afraid of a glorious hero like All Might… right? “It’s just that… you two are heroes. All Might-san, you are even the top hero…”
“Not anymore,” Toshinori interrupts softly, blue eyes no longer visible in the shadows of his eye sockets. “And I don’t see what my status has to do with young Midoriya?”
“Don’t… don’t get me wrong, but why would heroes be the teachers of a quirkless student?”
There has already been a slight tension in the air before, but as soon as the words left his mouth, the poor teacher knows that he should have kept quiet. The air is so charged with something that it seems to crackle, and All Might stands slightly straighter than before, smile gone.
It wasn’t a pleasant smile, but it was better than not knowing what this powerful man is thinking, thoughts hidden behind a straight face.
“I see,” Toshinori says so suddenly that the scared teacher jumps a bit. “You did know that young Midoriya is attending U.A?”
“Well, I was aware of that…”
“But since you knew him as quirkless, you assumed that he wouldn’t be taught by heroes? That he would be put in the general education classes? ”
“Yes, that’s what I…”
“Because of his quirklessness.”
“Yes. I mean…” he shouldn’t say it, he really shouldn’t, and he knows, but somehow, he can’t lie to this man, this hero, when he can feel a heavy gaze focusing him, urging him to go on. And so the teacher licks his dry lips and gets out, “… A quirkless boy like him couldn’t really become a hero, right?”
And Toshinori’s whole behavior and stance changes in the blink of an eye. Before, he had been quite polite, speaking soft and quietly, stance hunched forward, doing his best not to attract too much attention. Now, he straightens completely, towering over the shivering fool in front of him. His blue eyes blaze like fire, and his straight expression has been traded for one of utter fury. It sends shivers down his poor victim’s back.
Not a hero anymore or not, All Might is dangerous.
“I already wondered what kind of teacher would not notice when one of his students gets bullied for such a long time,” Toshinori doesn’t talk very loudly, but the pure anger and authority in his words have the other rooted in place. “Now I see that I was wrong. You are not a real teacher.”
The teacher opens his mouth, half-wanting to protest, but one sharp look makes him shut up quickly again as All Might continues.
“You didn’t even try to do what is supposed to be your job – instant of encouraging and supporting, you decided to turn around and almost destroy Izuku’s dream,” the hero didn’t even seem to notice that he had slipped into calling his student by his first name. “You calling yourself a teacher is an insult to every teacher out there. I suggest you consider quitting, before I find out that you continued to hurt those you were supposed to protect.”
The victim of All Might’s fury wants to protest, but the words are stuck in his throat. He opens and closes his mouth a few times without one sound coming out, before he deflates completely. One slight tilt of the head from the blond hero dismisses him, and he scrambles to get away, still pale and shivering.
(It won’t bet too long after that that he really quits his current job.)
Toshinori exhales deeply, seemingly relaxing again. Gone is the towering, enraged figure, and back is the kind-hearted, quiet man behind it. He takes a sip from his water, still frowning grumpily.
A choked of sound, almost a laugh, coming from his side has him looking over. “Aizawa-kun?”
“And you tell me not to scare the man,” Aizawa’s lips are hidden behind his scarf, but his eyes crinkle ever so slightly in amusement. “Sure.”
Toshinori huffs, lips twitching as he mutters something about “Had to get that out of my system”.
“Don’t worry. Would have done it myself if you hadn’t said anything.”
The smile turns real at that, and Toshinori feels marginally better at that.
His mood betters a lot more, though, once he saw Izuku looking around searchingly on the other side of the room.
Once his student spots him, there is a big grin on the boy’s face, happy and relaxed, and he waves over excitedly.
Toshinori just chuckles and waves back, signaling that he will come over in a second.
He doesn’t really care for what that so-called teacher was spouting. He doesn’t, because he knows better.
Izuku is going to be the best hero there ever was.