The gods have gotten bored, and humanity is the answer.
Charles earns the ultimate surprise one morning when he awakens to discover the world has ended, or rather the gods of old were bored and decided to redesign how it worked. Everyone else got a nice little message that showed up their vision, everyone else woke up when the gods decided to make their decision known. Only Charles gets cursed by the gods, and only Charles gets a visit from one as well.
The Game of the Gods has begun and the monsters of old are returning to our world, and all it took was the death of half the worlds population and counting.