One-Punch Man is not overrated. It deserves all the praise it received. I have been reading the manga since chapter 1 was released when it was not famous at all, and to be honest, I couldn't stop reading the new updates too. When the anime was about to be released, I was kinda worried that it will not be as good as the manga.. however Madhouse did not let me down. The anime is as well as good as the manga. Overall the anime is one of my favorite comedy/action animes.