北辰一刀流
Hokushin Ittō-ryū Hyōhō (北辰一刀流兵法) is a koryū (古流) that was founded in the late Edo period (1820s) by Chiba Shusaku Narimasa (千葉周作成政, 1794–1856). He was one of the last masters who was called a Kensei (sword saint).