Яґамі Кадзума

Kazuma is a former member of the Kannagi household. He was banished from the family by his father after he was defeated by Ayano during the Successor Ceremony for the Enraiha, his family's sacred sword. Since Kazuma is a son from the main family, making him the legitimate successor, even his own father considered him a disgrace for lacking the power to use fire magic, his family's specialty. Four years later, at the age of twenty-two, he returns to Japan as a skilled master of the wind arts.

Though he was not responsible for the killings in the Kannagi household that began to occur upon his return to Japan, he is still prepared to start a war with his former family.

The Kannagi family quickly finds out that the meek and powerless Kazuma they once knew is now more powerful than any of them, which frustrates Ayano to no end. The secret to his new power is his status as a "Contractor", meaning that he has made a contract with the king of the wind spirits, making him one of the most powerful magic users in the world. This contract manifests in a physical change which causes Kazuma's eyes to turn blue.