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“Are you All Might’s secret love child?” Todoroki-kun asks, his voice as flat as ever.
Izuku tries to hold back his laughter, but then he sees Hitoshi clearly hiding his amusement out of the corner of his eye, and he can’t help it. He breaks out into laughter. “No,” he manages to choke out between giggles and gasps for air. “Not- Not All Might’s- secret- love child.”
Aizawa-Sensei walks into the room as he says the last bit, and Izuku’s laughter increases again. Aizawa-Sensei raises an eyebrow. “And what’s this about?”
“Midoriya is denying that he is All Might’s secret love child,” Todoroki explains, deadpan.
Izuku can see Aizawa’s lips twitch minutely. “Is that so?” he asks mildly, though Izuku can hear the amusement in his voice. “Well, I’m sure this fascinating discussion can wait until after class.”
With that, homeroom began, and everyone put the absurd question out of their minds. Of course Midoriya isn’t secretly the child of a hero. That would be ridiculous.
“It was just so funny, Papa,” Izuku says that night at dinner with his family.
Papa — as they like to be called, even though they don’t identify as a man — looks over at Dad questioningly. “It’s true, Todoroki asked if the problem child was All Might’s ‘secret love child,’ in those exact words, completely deadpan.”
“It was hilarious,” Hitoshi agreed, smirking a little. “He totally asked about the wrong hero, though I can kinda see why he would think that. Izu’s sunshine personality and bright smile could be compared to All Might’s smile and positive attitude, even though he clearly got his energy from you, Papa.”
“My quirk is also more similar to his than either of yours. At least Toshi’s quirk clearly came from both of yours when someone knows what to look for, while mine seems completely random,” Izuku says, whining a little by the end.
“It happens sometimes. Random mutation of quirks, right?” Dad says, which is enough to send Izuku off on a tangent about quirk mutation and evolution and how both his and Hitoshi’s quirks fit into different theories on the subject. His family listen and smile fondly, even though each of them has heard most of the information before. Izuku loves his family.
Izuku remembers, vaguely, a time when he didn’t live with Dad and Papa. He knows he lived with the Midoriya’s, though he was too young for him to actually remember names, because that’s the name he uses at school. His legal name is Aizawa, Hitoshi’s too, but they don’t use it because they have to keep their parentage quiet for their safety. There’s always been the risk that if some villain one of their parents pissed off finds out, they might use Hitoshi or Izuku to get to them.
Dad and Papa were only sixteen when they were born, still students at UA. It was honestly a miracle that the media never caught wind of a trans-male hero student being pregnant, with how much media attention the school gets. Dad was in foster care at the time, so both of them went straight into care themselves and were split up to different homes.
As soon as Dad and Papa were out of UA they started trying to get Izuku and Hitoshi back, though they didn’t even know their names, having not even been allowed to name the babies before they were taken away. It was a long process. The boys were almost two by the time Dad and Papa were able to get court-ordered visitations with the boys and finally met them. Papa says that Hitoshi and Izuku bonded as soon as they saw each other at one of these visits. After more than a year of weekly visits, they were able to get custody of Hitoshi, though it was heavily implied that it was temporary and they could easily lose it again. Hitoshi was a little easier for them to get custody of because he didn’t have a long-term foster family. Izuku was with the Midoriya’s since he was an infant, and they were fighting to keep him. At least, they fought until he was four and his quirk didn’t come in, leading to the revelation that Izuku had a second toe joint. They stopped fighting after that, and soon Dad and Papa were able to bring him home as well. Izuku ended up manifesting his quirk late — the toe joint was a mutation and also a bit outdated of a way to tell if someone was quirkless — but he’s glad the assumption that he was quirkless let him live with his Dad and Papa. He wouldn’t have wanted to grow up with bigoted parents anyway, even if his other option wasn’t Dad and Papa, but really, they’re just about the best parents he could have asked for. Yes, they are both very busy as pro heroes, but they always make time for their sons, and the whole family loves each other a lot.
“If you guys want,” Dad says, after a long moment of peaceful quiet, “you could tell your classmates. As long as you trust them and make it clear that they can’t go around telling people, it should be safe. Besides, you’re going to be heroes in your own right soon. It’s your choice.”
Hitoshi and Izuku look at each other, communicating with their eyes in a way only twins and married couples can. Do they want to tell their classmates? It would certainly make them stop hinting about Hitoshi and Izuku being a good match, considering that they’re brothers and all. But do they trust them with this potentially dangerous information?
In the end, the brothers decide not to tell their class, exactly, but to stop trying to hide it. They start calling their parents Dad and Papa in class instead of Aizawa-Sensei and Yamada-Sensei, and it’s funny how no one notices at first. They start acting more tactile with each other in the dorms, because they’re twins, and sometimes they like to cuddle. It’s not that they cuddle more, just that they stop hiding in one of their rooms to do it, letting everyone see them cuddled up on the couch. Dad stops hiding his affection as much in front of the others, ruffling their hair or giving a small smile, though he’s still not very openly affectionate. That’s just how he is.
The first time the class seems to notice that they have changed what they call some of their teachers is over a week after they started doing it. Izuku runs into the classroom 30 seconds late and loudly pants out, “Sorry, Dad,” before taking his seat.
The class is quiet for a moment before Kirishima, because of course it’s Kirishima, shouts, “Dad!?!”
“Um, yeah? It’s not like it’s the first time I’ve called him that in front of you all. I assumed you’d already gotten over it,” Izuku says, and he looks and sounds innocent, but Hitoshi knows better. They had talked just last night about how oblivious the rest of their class was and how to fix it.
“You guys really didn’t notice?” he asks mildly. “Not even you, Todoroki?” Todoroki looked like his world was imploding around him. “Did you guys at least notice us calling Papa ‘papa’?”
“Us?!” “Calling who ‘papa’?” “What the fuck?” come the class’s responses, amount others.
“Yamada-Sensei,” Izuku says calmly. “Aizawa-Sensei and Yamada-Sensei are our parents. Didn’t you know?” Izuku tilts his head to the side like a confused puppy, and Hitoshi has to hold back his laughter. The green-haired boy is way better at acting than anyone gives him credit for. Hitoshi loves how much of a little menace he is.
“Weren’t they, like, fifteen when you were born?” Sero asks.
“Sixteen, actually,” Hitoshi corrects, not offering any other information.
“And if any of you follow our example, I will not be happy. Believe me, trying to train while pregnant is not fun,” Dad says drily, before glaring at both of his sons. “Especially the two of you. If I become a grandfather before I’m forty, I’m disowning both of you.”
“How is that fair?” Hitoshi asks, raising an eyebrow at his father.
“Because if I disown one of you, the other would stop talking to me anyway as a show of support,” Dad says, and okay, that’s fair. “Now, let’s get started with today’s lesson.”
Todoroki is blindsided. He never even thought that Midoriya, ray of sunshine that he is, could be Aizawa-Sensei’s secret love child! At least he now knows for certain that he doesn’t have to compete with Shinsou for Midoriya’s affection. Though, he now has to win Shinsou over if he wants a chance with the green ray of sunshine.