An Onoya

An Onoya is a 27-year-old operative working for the ReLIFE Institute who masterfully disguises herself as an airheaded, low-achieving transfer student with glasses to blend seamlessly into Aoba High School. Behind this carefree façade lies a sharp-minded professional tasked with covertly supporting research subjects. Originally assigned as Kaizaki Arata's designated handler, she frequently catches him off guard with her audacious antics—yet beneath all the playfulness is a remarkably astute individual capable of executing complex missions with cool precision.