I'm gonna hurt your brain
Bnha is the same timeline as The Flash, why do I think this? The particle accelerator is basically how a bunch of people got their abilities. Think about it although Barry Allen became the Flash because of lightning which particle accelerator could have made when it exploded and there's also another fact that he got splashed with chemicals because he felt because he was struck by lightning right? So that must mean that a lot of other people got different abilities because of the particle accelerator exploding. What if there was a kid in China who was born at the same exact time the particle accelerator exploded? The particle accelerator could have started the dawn of quirks. This is a four hundred years difference. THINK ABOUT IT!!!