Ayane Niikura is the secretary of the student council at Seifu High School. She possesses long black hair extending to her waist and green eyes. She frequently wears a headband adorned with cat ears or cat paws. Ayane exhibits a generally spacey and absent-minded personality, often appearing airheaded. However, she occasionally displays perceptiveness, such as deducing Hayato Izumi and Ui Wakana lived together after noticing a shared scent on their clothing. Primarily seen in group settings with other student council members like president Ui Wakana and treasurer Karen Fujisaki, her role involves supporting the council's activities.