Follow the journey of high school students Shinokita Reiko and Yajima Junko as they navigate various schools, battling villains ranging from bad guys to ninjas and corrupt forces. In one such school, they stumble upon a clandestine ninja society, an unscrupulous school official, and a haunting historical tragedy. Assisted by the talented ninja Kotetsu, they strive to restore order to the school, albeit not without stirring up emotions and causing heartbreak along the way.