1(BNHA)

An Au where the adults actually take responsibility for what is happening.

Shigaraki looks too introverted to the point he flinches from his classmates or teachers? The teachers talk with his mother and try to find a way he can be with a family member or something that will not react aggressively over him just mentioning the heroes.

The bullying done on Deku? The teachers and parents stop it and teach the kids that while not common there is nothing wrong with being quirkless as many jobs do not require people's quirks as the ones that mostly use their quirks are heroes.

Some notice that quirks may affect the ones with it negatively(example: Momo needs to probably eat much more, Sato to use his needs to consume sugar which cane affect him and let's not talk what nitro-glycerine and explosions can do to a body...while it is assumed that those with quirks aren't affected by them, we have been shown that it can happen).

People have what is called villain quirks? While they are told to be careful around them is it mostly so the ones with the quirk do not hurt themselves or others accidentally, so everyone is taught that no quirk is a villain or hero's quirk and only that they all can be used to both good or bad but it depends on the user.

No glorification of heroes, other people are also held high as it isn't just heroes that help people besides while some may not want to accept it but not all heroes are good people.

A hero's child shows signs of abuse? There is a intervention because just because the parent is a hero doesn't mean they are allowed to abuse their children.

Seriously, many things could have been stopped if adults had acted since the beginning which happens in many shows and can get annoying after some point.