Kurosu Ouma is Shu's father and Keido's former best friend.
Kuroso and Keido are best friends who enroll in Tennozu college where they research on the Genomic Resonance theory. One time, he and Saeko are caught naked in a room by Keido.
Kurosu Ouma is designed by Redjuice Graphics who has no information regarding any inspiration used to create him. He first appears in Guilty Crown episode 20. His Japanese voice actor is Toshihiko Seki.