, also known as Shinmen Takezo, Miyamoto Bennosuke or, by his Buddhist name, Niten Doraku, was an expert Japanese swordsman and ronin. Musashi, as he was often simply known, became renowned through stories of his excellent, and unique double bladed swordsmanship and undefeated record in his 60 duels. He was the founder of the Hyoho Niten Ichi-ryu or Niten-ryu style of swordsmanship and in his final years authored the , a book on strategy, tactics, and philosophy that is still studied today.