An immortal, man-eating monster girl wakes from a long sleep to find the world transformed. Human technology has advanced at an astonishing pace, and cremation has become popular.
That won't do!
She'll have to find a keeper to make sure she has food.
Content note: The female lead is the strongest character in the story, but she's not clever. She's a monster in human skin.
P.S. This is a parallel-world story to the author's other novel, I'll Have to Protect Humanity for the Sake of Food. That story takes place in a post-apocalyptic world, while this one is set in a modern city. You can read this one without having read the other.
Theme: Dawn will break through the darkness in the end.