Toshiro Sakiyaki, a girl that was always mistaken for a boy. She comes from a respected family who brought victory to the international highschool for 6 years in sword fighting. As the only daughter from the 4 older brothers of the Sakiyaki family, she aims to surpass them and be the greatest of all. With her partner Yuji Suzume, they try to pass all the trials to be a participant in the Sword Fighting Competition together, but no relationship..... Or will there be?