I recently started following you because of your fic "but you gotta.." when I was saw your villain!deku ideas and I just fell in love with it! I haven't seen anything about All Might yet but I like to think he's like Deku's almost/kind of father that is trying to parent him while simultaneously fulfilling his duty as a hero all the while constantly asking himself just how he basically adopted one of the most notorious super villains.
my theory is actually that izuku still hero worships all might and has a TERRIBLE celebrity crush, he fanboys hard on his social media account and everyone knows!! but izuku is too shy to actually try
stalking tracking down the hero he admires most! mostly he just posts about how cool all might looked in his most recent battle, did you see that,all might is so incredible and izuku would probably die if he ever met him in real life.
one day though. one day izuku spots all might fighting a villain – and he can’t help but follow all might around, watching with round eyes as all might fights. the villain is a slippery one, and manages to slip away – and so, all might lands next to izuku on the roof while he’s looking for the villain. ah, hello, says all might; did you happen to see someone pass this way, by any chance? izuku, too awestruck to say anything, points wordlessly after the villain. all might takes off.
afterwards, izuku gushes about how he ACTUALLY SAW ALL MIGHT, he ACTUALLY HELPED ALL MIGHT, and he is just extremely happy about the entire thing but entirely too shy to actually try approaching all might again.
anyways, he’s not stupid. there are heroes he can fight, and there are heroes he can’t. most heroes have pretty obvious counters, if you think them through; but there is very little izuku can do to counter simple, overwhelming strength. if all might knew he was a villain, and all might decided to arrest him, there’s nothing izuku can do. and as much as izuku admires all might so, as much as he wants – izuku isn’t ever going to risk putting his freedom on the line like that.
if yagi toshinori meets an enthusiastic and cheerful civilian boy at his favorite coffee shop – if they’ve struck a strange acquaintance, if said boy talks to toshinori about his favorite heroes and asks after toshinori’s day – well.
there’s nothing strange about two civilians being acquainted with each other.
i’d also like you to consider: instead of all might taking in izuku, strangely enough, it’s actually a combination of detective tsukauchi and eraserhead.
aizawa objects strongly to this, but somehow it’s happened anyways.