Musashi's fights with Yoshioka School of Heiho (art of warfare) and the duel at Ganryu-jima Island (Shimonoseki City, Yamaguchi Prefecture) have been very famous and adapted to many novels, costume movies, and costume TV dramas.
京都の兵法家吉岡一門との戦いや巌流島（山口県下関市）での試合が、小説、時代劇映画、テレビドラマ（時代劇ドラマ）等の題材になり有名。