Orphaned at a young age, Fuyuki is raised by a mysterious mentor who teaches her martial arts. On her 18th birthday, she's given a sacred katana and a mysterious mission. As she ventures into a serene village and perilous forests, she unravels the secrets of her past and confronts ancient powers. Fuyuki's journey challenges her courage and reshapes her destiny, leading her to confront lurking evils and buried truths about her identity.