Giyu’s original personality as a human was that of a kind and caring boy who thought of others before himself much like his best friend, sabito. Additionally, He was a responsible little brother to his bigger sister and often put their needs first rather than her own.Giyu is, however, not afraid to get in harm's way, protecting his friends from demons even after being returned to a human state. It is also shown that Giyu’s humane, laid-back demeanor supports this fact after sabito apologized.