STORY: The story takes place in a secluded village called Kasumi-kogencho, also known as "Kasumi no sato - Misty Village." In this remote village, there is a private vocational school for the girls who want to become "Kunoichi" (female ninja), called Shinobi Gakuen. The elite girls from all over Japan train everyday to fullfill their dreams to become good Ninja. One day, Himawari, a girl who has a longing for Kunoichi, and Hayato, a young male teacher who tries to get free of debt make a fateful encounter at the school. During the school days with both tears and laughter, Himawari and her classmates grow up as good Ninja. Can Himawari become a professional Kunoichi at last?