Mizu is a 19-year-old mixed-race girl, with pale skin and piercing blue eyes, earning the repudiation and hatred of anyone who noticed that detail. Forced to be a man since she was little, Mizu is one of the best samurai ever known, having unmatched skill with the sword and her own body, being as admired as she is feared. She is not looking for love, money, fame, or even happiness, the only thing she wants is the satisfaction of her long-awaited revenge against the man who made her like this.