Sawa may seem innocent and naive, but don’t be fooled. She is a cold-blooded killer, and if you’re on the wrong side of the law, you may be her next target. Not content to just watch as the imperfect justice system lets more and more criminals go loose every day, a detective decides to train the young Sawa to be his instrument of justice.

Years after the events that transpired in Kite, Sawa's whereabouts are a mystery. During this time, rumors of a new killer have begun to circulate the city. They call her the Angel of Death, an unfeeling assassin who eliminates her targets with grace and precision, leaving only a flurry of feathers as her calling card. What the public is unaware of is the fact that this notorious hitman is a polite young lady named Monaka. Like her spiritual predecessor, Monaka has lost most of her family, and her father's duty as an astronaut keeps him practically worlds apart. However, they are close despite the physical distances and Orudo promised his daughter that he would return. Until then, daily life for the timid and somewhat clumsy Monaka involves mostly school and her part time job as a waitress, but her nature completely changes once she receives an assignment.