Currently considered the most powerful fire mage in the Kannagi family.
He´s the father of Kazuma Yagami and Ren Kannagi, also the younger brother of elder Jugo. He was the one resposible for the expulsion of Kazuma from the family. He said that he did that to follow the Kannagi´s beliefs in power and, since his son couldn´t control fire there was no reason to keep him in the family, and therefore no reason to consider him his son anymore. The true reason was because he wanted his son to find his own path, but he has never admit it to be so. After Kazuma returns as a powerful wind mage he is defeated by him, but even so it is proved that their powers match each other. Because of the struggle that took place between them Genma and Kazuma have some trouble communicating, so they have developed their own way to talk, and this is fighting each other, thats the reason way every time they meet they cant hold themselves and start ridiculous fights.