Miyamoto Musashi , was a Japanese swordsman, strategist, artist, and writer who became renowned through stories of his unique double-bladed swordsmanship and undefeated record in his 62 duels. Miyamoto is considered a kensei of Japan. He was the founder of the Niten Ichi-ryū style of swordsmanship, and in his final years authored A Book of Five Rings and Dokkōdō.