The story is set in a fictional world where 15 years earlier, people
stopped giving birth, and even with their bodies damaged beyond repair,
the dead can not find rest, unless they are buried by mysterious
individuals known as "gravekeepers". According to legends, this happened
because by that time, God abandoned the world. Ai Astin, a young
gravekeeper, has her life changed forever when an immortal gunslinger
called Hampnie Hambart shoots everyone in her village except for her.
Having no place left to live, Ai ends up relying on the same man who
killed everyone around her as she travels the world to perform her
duties as a gravekeeper and learn more about the reasons why the world
had reached such state.As she goes along her journey, she meets new people: Hampnie's childhood friend Julie, the gravekeeper Scar, a mysterious boy named Alis, and a ghost witch who goes by Dee. When Hampnie leaves her due to circumstances, Ai and her new companions travel the world, with the goal of fulfilling her dream of saving mankind.
