Kite Liberator (Original Japanese Version)

A teenage assassin is cleaning up the streets of Tokyo. The police call her the Angel of Death, an unfeeling assassin who eliminates targets with grace and precision, leaving only a flurry of feathers across the bloody crime scene as a calling card. What the public is unaware of is that this notorious hitman is actually a polite schoolgirl named Monaka. Monaka seems to be just an average high school girl, but she has a dark and terrible secret linking her past to a murderous police detective.