Japanese Girls + Bikinis + Swords = Sweet
I remember reporting on the development of this film a while back, called "Oneechanbara Vortex". The movie is based on a Japanese videogame property that was originally for the PS2, and eventually ported over to the XBOX360 and the Wii. I'm not sure if it was ever released in the US, but some of our readers may be able to help me out with that one.
I had some trouble finding the film's synopsis, but I would assume it follows the game closely, since you can't very well improve on perfection like this: