Kou is a character whom attends Kamura Academy, and is an integral character in the episode Look Out! It's a Pint-Sized Akito! He is shown to have equal the attitude as Akito does, and continually disrespects Sana during her visit.
He regularly pulls malignant pranks on his peers, more out of spite than to have any fun. He meets his match with Akito, however, who disciplines him to speak his true intentions. As it turns out, he is merely misunderstood, and desires to know Sana and get along with the rest.