Original sentence: Spiral is a mystery story the focal point of which is the nature of the Blade Children, those who have cat-like eyes and are missing a seventh rib bone
Edited sentence: Spiral is a mystery story with a plot that is much deeper than other detective series, like Case Closed (Detective Conan).The driving mystery of the story is the nature of the Blade Children, those who have cat-like eyes and are missing a seventh rib bone