Ganma Asui is Tsuyu Asui's father and the husband of Beru Asui. Not much is known about his personality at this time. It is likely that he exhibits a caring demeanor, much like a typical good father stereotype. At some point, he met Beru Asui and the two married and had three children. Due to his job, he lets his eldest child, Tsuyu Asui, take care of her younger siblings, Samidare Asui and Satsuki Asui.