Kaze no Stigma (風の) is a Japanese light novel series written by Takahiro Yamato and illustrated by Hanamaru Nanto. After the death of Yamato on July 20, 2009, the story remains incomplete at twelve volumes. A 24-episode anime adaptation directed by Junichi Sakata and animated by Gonzo aired from April–September 2007.
Plot
Kazuma Kannagi was the eldest son of the Kannagi family and presumed heir. However, due to his inability to use "Enjutsu" (炎術), the power to control flames, within his family he was considered to be useless. Despite his inability to wield fire, his father insisted on him competing for the right to wield "Enraiha" (炎雷覇), a powerful heirloom sword traditionally wielded by the family heir. The 16-year-old Kazuma was soundly defeated by 12-year-old Ayano Kannagi, his second cousin, and his father banished him from the family.
Four years later, he returns as a master of "Fūjutsu" (風術), the power to control wind, and with a new name: Kazuma Yagami. Soon after his return, several Kannagi family members are killed by someone using Fūjutsu and Kazuma is presumed to have committed the murders in revenge for his banishment. Though innocent of the murders, he is confronted by various members of his former family who wish to fight him. However, the only person that Kazuma wants to fight is his father, the strongest Enjutsu user and whom he later defeats in a duel.
Kazuma is revealed to be a Contractor, a rare individual who has entered into a contract with the "Kaze no Seirei-Ō" (風の霊魂王). Due to this, Kazuma is able to draw upon the wind spirits around him, which amplifies his inherent powers, and allows him to heal his wounds. When using this power, his eyes turn azure blue. However, this ability puts a strain on his body, as it is his stamina and will that limits the amount of power available to him.