Daisuke Saiki

This wind magician is related to Seiichiro and possesses the ability to manipulate the wind, though his skill level is less than his relative's. Initially, there was friction between him and Kamui, as Saiki's strict adherence to rules clashed with Kamui's perspective on humanity's fate, eventually leading to a strong friendship. He is deeply devoted to protecting Hinoto, a bond that tragically ends in his demise during a pivotal event in the story.