She has a child-like personality and is quite gullible, often falling for Sensei's jokes. Arona thoroughly enjoys sweets, being quick to abandon a diet for the sake of sweets—or even breaking into tears from being denied them.

Arona is a small AI girl with short sky blue/violet hair with bangs covering her left eye, a white headband with large bow and braids tied to her left side. She has bright blue eyes and is heterochromic, with the right eye having a blue pupil and the left having a violet 