Yoshikage Kira has many unusual and dark personality traits, his love for his mother and loyalty to his allies put him on the side of good. Kira is a narcissist, Kira also shows remarkable spirit in the face of adversity His interactions with others are mostly cold and apathetic, fitting and contrasting his occupation as a surgeon. his sister Nijimura claims that he was not heartless, as he cared for his mother and actively worked to save her from a strange disease.