Onechanbara: The Movie (2008)

In the year 20XX a mysterious scientist discovers a way to bring back the dead . . . only it turns one town into a zombie-infested hellhole. But when the world falls into ruin, only one woman, her trusty katana and sexy bikini can save them. And as she takes down one zombie after another, she also pursues the younger sister she wants to take to task for killing her father.