Daisuke Saiki  

, 軌 玳透

Daisuke is a nephew of Seiichiro who also practices wind magic, though not at the same level as his uncle. Initially, Saiki and Kamui don't get along well because Saiki was skeptical about Kamui being the one to save humanity. However, they eventually understand each other better and become friends. Daisuke is devoted to protecting Hinoto, whom he seems to care for deeply.