Kaoru the Ripper

A member of an all-female terroristic organization known as the "Bloody Angels". Profile: Owner of a mysterious sword called "Benizakura" which is said to craze one who holds the sword for blood. Character: Modest and mysterious traditional Japanese woman. But once the sword is pulled out, she makes a complete turnaround and would not be satisfied until the sword meets some human blood. Source: in-movie character's bio.