There's a bunch of religious church stuff involved, [which he'd be happy to explain if gideon expresses interest, but also it's church and religion stuff -- it's stuffy,] but we're soldiers, basically. Except instead of fighting humans, we fight Akuma.

Akuma are the closest thing we've got to necromancy in our world. But instead of bringing people back to life, the Count just takes the soul and puts it in a machine, which turns into an Akuma.