In 1612, Musashi came from Kyoto to visit Karo (chief retainer) of the Hosokawa family, Okinaga MATSUI who had known Musashi's father Muni, and he requested Okinaga to permit a fight with Kojiro.
慶長17年に京より武蔵が父・無二の縁で細川家の家老・松井興長を訪ね小次郎との勝負を願い出た。