Don Quixote, Relentless Knight debuts as a limited time character

A samurai once found a young girl washed ashore and gave her a home. She would grow to become the sword saint, Musashi Miyamoto. Musashi earnestly imitated the samurai's techniques, eventually becoming unmatched. But her master's writings spoke of attaining true emptiness to reach sainthood. A pure state of being where absence itself is made manifest. To achieve this, she had to confront the past she had erased herself.