The story is set in modern times at a school for training female officers, the "Army Girls' Junior School." A girl named Inudou Shinobu, who has come from the countryside, encounters her overbearing upperclassman, Kagami Touko, shortly after enrolling. Despite her haughty demeanor, Kagami occasionally shows kindness only to Inudou. Inudou finds herself drawn to this side of Kagami, but...