A Certain Special Me

In a certain time, the apocalypse has happened: all evil has left earth. Many were killed, but the population rises as people now work together instead of constantly murdering each other. The new Hero League now punishes villains based on the most righteous, integrated heroes on earth. But believers of the old world order still attack the one's who live in peace, can the heroes defend against the remaining and new evils... both villainous humans and other world beings?