Ayumu is Rino's best friend, classmate, and the one to introduce her to the Gokujou Seitokai.
She is later found to be from the Ohme clan of ninja, who left them because she disliked the rules and policies that prohibited her from acting or dressing how most girls would. She has a twin brother named Urato. In an episode centered on her, Ayumu is discovered by a talent scout and planned to enter showbiz as AYU-AYU. In this same episode, it is also revealed that she is a member of the Covert squad as well.[Wikipedia]