Director: Chris Nahon
Our protagonist Saya is a half-demon, half-human slayer who dispatches small fry vampires on her way to the Boss demon, Onegin, the oldest and most powerful vamp who killed her father when she was an infant. Raised by her father's most loyal retainer, Kato, and taught to be an superhuman weapon, her one purpose in life is to avenge her father's death.
For the first half of the movie she is sent into an American army base, disguised as a student, to find the vampires in the high school on the base. It becomes then a vehicle for American sensibilities--most of the movie is in English. Rather absurdly, she is called on in English class to say a few things about Adam and Lucifer in Frankenstein--a favorite text for high school movies, I should think. The only thing this scene did besides set up subsequent fight scenes is provide a chance for the line "God as irresponsible father figure" to arise. Given the question of God and destiny in this movie, and apparently in the original movie and manga, it's an interesting point, but too heavy-handed and obvious. There was no need to add a major character of a teenage American girl, especially as the chemistry between the two main characters, as female friends, was spotty at best.
The merit of the movie, the only real reason a layperson should see it, is for some unbelievable action sequences where Conservation of Ninjitsu is used to spendid effect. Several times Saya is mobbed by (or throws herself into a mob of) "bloodsuckers" only to dispatch each quickly and elegantly. The visuals are consistently impressive--gorgeous lighting suffuses most scenes, which are held either under the black cover of night or in the golden sun. Whoever took care of the color saturation did a fantastic job.
There are some CG sequences that I just had to swallow my skepticism for: particularly when the bloodsuckers showed their true demon forms, and looked like nothing so much as, well, what they were: badly rendered CG monsters. One scene involving a truck and batlike wings reminded me of a similar scene in Underworld: Evolution, and it's never good when an action movie reminds you of another action movie's derivative sequel. Likewise, the trite and obvious ending was handled unevenly (stunningly gorgeous visuals, stunningly gagworthy dialogue). Blood didn't cut any new ground here, but rehashed old themes over again.
Still, ignore the senseless plot jumps, silly ending, and over-Americanized scenes involving the teenage daughter, and you have some fantastic entertainment fodder. I'd have to agree with my companion, who during a sequence when Saya lops off vampiric limbs, mutter/hissed, "This is so much better than Transformers!"