Haganemaru

Haganemaru is the other main character in the manga, acting as Jintetsu's only true companion and also his voice. He was once a human being, the eldest son of Kanemasa Fujinami, and an accomplished swordsman. When his father was killed by a ronin over a minor disagreement, Haganemaru sought out revenge. Though he succeeded, he later died of his wounds. He left behind a fiancé named Oto, a childhood friend who he saw more as a sister than a lover. Somehow, his brain managed to persevere, and actually regained consci…