The main character Shikame Chisato and her elder brother who went to a Hanko Nisshinkan School as a swordplay instructor surrogate. Hers childhood friend, Minoji Sakai also, he went to there, where women are usually not allowed to attend, he was worried about Chisato going … And an encounter with the boys（Gisaburo Shinoda,Matahachi Ito） who go to Nisshinkan School , Towako Yamamoto who goes to as a gunnery instructor surrogate likewise, the youth Kotaro Saitani who has a store Nishikiya in a castle town, and the mysterious youth Narihira Agatuma who lives there as a guest staying changes the respective destiny big.
