Sambojam812
They'll probably write memoirs about all this. That or they'll pay someone else to.
When they're all retired top heroes, of course, ready to share their life stories with the public they've spent their live protecting. Who knows? It might even inspire the next generation of crime fighters! Maybe they'll even throw together a neat little scrapbook or something as a class this year and give it to Mr. Aizawa as a gift. For now, it'll just have to settle for rattling around in their brains every once and a while.
You know. Like memories do.