These volumes by Fujisawa Tooru are about a teenage girl who was originally part of a highly-feared terrorist faction, but defected to the side of the Japanese police agency after realizing that there no point in living just to kill. It turns out that she is a highly trained assassin in many aspects.
I've read several volumes of Rose Hip Zero and Rose Hip Rose already, and I think the art is really great, though it gets increasingly perverted, but that's fine with me because I'm mature enough to ignore it and focus on the overall storyline.
Does anyone know if Magnum Rose Hip was released yet? It was being serialized in early March 2006 or so, but I have yet to see any copies.