I think the “will of the world” summoned an isekai protagonist. We noticed in the previous chapters that the empire somehow got hold of breakthrough technology that caused a lot of trouble for the demon army. Considering how this story plays around with the hero tropes, I wouldn’t surprised if he goes up against someone who’s iseakai’d eventually.
What a mystery. Is the "Will of the World" that's currently trying to kill DL the same one that summoned the Great Spirit? He only made an assumption and he himself doesn't have proof. Still, it doesn't feel like it. Maybe there are several "Wills"?
I am willing to bet that his dead girlfriend (Hero) might have been reincarnated as a goddess or something.
Pulling the strings behind the scenes so that MC will finally die and put him out of his misery.