Miu Fūrinji is the main female protagonist of the series. She is a descendant of both the Fūrinji Clan and the Kuremisago Clan (which are both considered to be infamous tribes of martial artists who were known for their physical superiority), the daughter of Saiga Fūrinji and Shizuha Fūrinji and a disciple/member of The Ryōzanpaku who was formerly in The School of Shouchiku Gakuen before she transferred to Kōryō High School in class 1-E where she met Kenichi Shirahama and a mutual love interest with him began.