北辰一刀流兵法の第七代宗家・大塚龍之介が、「星眼伝授・七曜劒」を解説。Ōtsuka Ryūnosuke - the 7th Sōke of the famous Hokushin Ittō-Ryū Hyōhō explaining the Transmission of Seigan / Shichiyōken.