Hatsune Nagaishi is a high school girl who has lived a life dedicated to Kendo. She had a nemesis, Chizuru Shirakura, who she had never defeated in a match. Hatsune trains hard to win against Chizuru, but unfortunately, she gets into an accident and loses her life. When Hatsune woke up, she found herself in a different world. Hatsune, who was reincarnated in another world as the aristocratic daughter Sylvia Morntstein, aspires to be a swordsman in this world - a "knight", and decides to enroll in a knight school. However, there is a person at that school who looks a lot like Chizuru, her nemesis and rival...!? August and Dengeki G's Magazine are teaming up to create the first vertical comic project. Hatsune and Chizuru. A different world knight school story where two kendo girls grow up to become knights in another world!