Arisu is a petite teenage girl with lilac colored, short hair that reaches her shoulders and violet eyes. She wears the standard female school uniform which consists of a white shirt, red blazer, a navy blue bow tie, white skirt with black frills at the end and dark brown shoes, with her accessories being a black beret on her head with a gray ribbon connected to it and a white pair of stockings with garterbelts. She often walks with a cane and is quite short for her age.