Yoake no Ryodan

The stage is Europe under World War II. The protagonists are Johnny Boy, a girl whose parents were killed by a zombie, and a young man, Honey Bunny, who decided to accompany him on a dangerous journey with the appearance of a younger brother. While escaping the attacking hordes of zombies and the insurgent Nazis, the two aim for Neuschwanstein Castle, the root castle of the ghosts!