The Genesis Incident, an incident that killed half of the world's population.
Humanity developed superpowers, but were unable to control it. Causing massive damages to cities or even countries. It was an incident that caused a massive change to the world's geography.
Some countries were able to survive the surprise of hahing supernatural powers and going out of control. They began researching and finding ways to make everyone control their abilities. Since every person is a ticking time bomb that could explode at any moment.
They found a way and refined it to the point where they can safely wield their powers. The next step is to strengthen their control over their powers so that they can wield it to the fullest extent.
Now marks our story a few years before the apocalypse.