Shino:bu - Miyamoto Musashi originally studied the Enmei school 円明流of sword, however he eventually formed his own school which he called Niten Ichi Ryu, the Two Heavens Unified as One School. This
Tetsujin ryū, an Offshoot of Niten Ichi ryū? – Light in the Clouds
Gosho-ha Hyōhō Niten Ichi-ryū - Wikipedia
Musashi's Chūdan-no-kamae
KENJUTSU Hyoho Niten Ichi-ryu - 33th All Japan Kobudo Demonstration (2010) - YouTube