Years ago, Kannagi Kazuma was bested by his cousin, Kannagi Ayano, in a fierce competition for the coveted Enraiha sword, leading to his expulsion from the prestigious Kannagi clan due to his ineptitude in En-Jutsu, their signature fire technique. Reemerging as Yagami Kazuma, a proficient practitioner of Fuu-Jutsu, the wind arts, he finds himself entangled in a web of intrigue when a series of brutal murders at the Kannagi household point fingers at his newfound skills as a Fuujutsu-shi.