Yagyuu Kyuubei (柳生 九兵衛, Yagyū Kyūbei) is the successor to the Yagyuu family name, the daughter of Yagyuu Koshinori and the granddaughter of Yagyuu Binbokusai. She was brought up as a male, following the code of the Yagyuu clan, but in later years decided to follow neither femininity or masculinity, but live as only "Yagyuu Kyuubei". She was the main antagonist of the Yagyuu Arcread more