Tamano Chiharu, born and raised in a family of assassins in a rural town, has been living a modest life as a hitman herself for two years since graduating from high school. No dreams, no boyfriend, still living at home. Her daily life revolves around "work" and trips to the shopping mall. However, one day, her mother suddenly tells her to move to Toukyou because she "has a new man"... Her peaceful and fulfilling country life is turned upside down, and the city is full of unfamiliar things. Will Chiharu be able to successfully adapt to her hitman profession in Toukyou and achieve a glamorous city life...!?