Live-action adaptations of animated works are quite the oddity.
Fans are usually against it because “it’s pointless”, but even so it’s hard to fully repress any curiosity, and it’s a way to stir up some interest in an IP.
In this case, it’s adapted from the omonymous 2000 Production IG film, a coproduction between french company Pathè and Hong Kong company Edko, directed by Chris Nahon.
The basic plot is mostly the same: Saya is an half vampire half human that hunts down “proper vampires” for a shadowy organization, that helps her by providing supplies for the killings. It’s still set in an American army base, but there’s also this whole backstory of shape shifting “demons” that in the 16th centhury took human shape to live between us (using the bloodshed of that period to their advantage), and Saya being the daughter of a legendary demon hunter, slain by the vile demon Onigen.
Also, she has to basically babysit Alice, the daughter of an american army general, after she saves her from vampires monsters disguised as school bullies. Yeah, while some scenes from the anime film are replicated, the plot changes and add things just to fill time between the decent action scenes, definitely the best parts of the movie, despite being very clearly made by a Hong Kong company, not very japanese.
It honestly feels like the plot was written for a tv series or a videogame based on Blood The Last Vampire, and then reused here, it has that cheap feeling to it. Apart from that, the movie is watchable, but it’s kinda shit, with laughably bad and clichè as hell dialogue, some stupid scenes, mediocre acting, inconsistent quality of the special effects, and a really anti-climatic final confrontation.
Oh, and the title is a lie. It is.