I thought you knew. { but maybe his memory is all messed up as well. } The reason Darkness exists stems from an event that happened here in the past. People with seasonal powers killed others with them to gain further power. It seemed to have tipped the balance, however, as those who succeeded started to change, shall we say? Accounts showed that some exploded into lava, or other natural disasters. I wouldn't discount this being a possibility.

{ as he explains this though, his voice is still kept quiet, like he's walking on eggshells. }