My brain rested for like an hour, and now there's a new pleasant idea brewing in my head. I should make Death a human being who doesn't know the only reason people don't drop dead around him is his twin sister who watches him from afar since they were separated from birth. Well, he's only 'part' Death and his sister hates him for it. But she has to force a reunion when she learns her brother's adoptive parents belong to a secret witch cult that plan to use him on his eighteenth birthday to bring the world to the brink of an apocalypse.
His sister also realizes even though she's hated him for the past eighteen years, she actually doesn't want him dead— as he should be! But not along with millions of people, right?