Muramasa is the title character of Soukou Akki Muramasa, a dark visual novel and anime-adjacent series centered on cursed armored blades and moral conflict. He is portrayed as a legendary swordsmith whose name is tied to powerful, often ominous weapons. In the story’s lore, Muramasa represents the source of the infamous Muramasa blades and the legacy of their destructive power. The character’s role is primarily symbolic and foundational, shaping the series’ themes of violence, fate, and the burden of power.