Onechanbara: Bikini Samurai Squad (2009)
(aka: Oneechanbara the Movie - Vortex)
It's simply a Japanese Zombie picture with a lot of family drama thrown in, but is based on an Xbox and Playstation game. It has okay dubbing for such a low budget horror flick. It's probably rated R for flashing a little breast and a lot of blood.
Aya Imichi (Eri Otoguro) is the sword wielding, cowboy hat and bikini wearing protagonist that is out to get her sister, Saki (Nao Takamori). Aya is traveling with her heavyset sidekick, Katsuji (Tomohiro Waki), who is sort of the comic relief and voice of reason in a crazy zombie environment. In their travels they meet Reiko (Manami Hashimoto), a leather-clad gun slinger, who never seems to need to reload.
Their destination is the mad scientist, Dr. Sugita's (Taro Suwa) lair where he has tried to regenerate life, but seems to always come up with creating zombies. Naturally, there's lots of fighting and sword action that you would expect.