Despite his power, he is continuously looked down upon by members of the Kannagi family due to how he is seen as a disgrace for learning wind magic rather than fire magic, which is held to be superior, even though Kazuma was able to defeat his father.

Can Kazuma use fire?

Personality. Kazuma is shown throughout the series to be bitter, rude and selfish, which stems from constant harsh treatments by the Kannagis due to his inability to use fire magic and his subsequent disownment.

Are Kazuma and Ayano blood related?

They are not related. They originally belong to the same clan that is all. They are cousins of different blood that is why Kazuma is part of the main family and Ayano is of the branch family. Hehe, unless someone gives a geneology tree that Kazuma and Ayano are direct cousins, they are not blood relative.