Usagi Yojimbo, Vol. 17: Duel at Kitanoji

Nothing comes easy for rabbit ronin Usagi, not even being a spectator at the planned duel between his former teacher Katsuichi and Katsuichi's former rival Nakamura Koji. Before the duel even begins, Usagi becomes embroiled in a dispute between Koji and a local fencing school that demands the samurai challenge its master. Along the way, Usagi discovers a devastating secret - a weakness in Koji's style. It's a secret that could save his teacher's life, but at the cost of his own honor.