The lord of Ogasawara had at one time requested Matabei to duel Musashi. Matabei was compelled to fight even though he had not wanted to, as to obey his lord's command. Matabei chose to use a bamboo lance, while Musashi chose an ordinary sword made of wood.
The lord of Ogasawara requested a duel between Matabei and Musashi, which Matabei was obligated to accept despite his reluctance.  Matabei opted to use a bamboo lance, while Musashi selected an ordinary wooden sword.