Asa is your average human high school girl of average build and height. Her hair is black and is sometimes colored with a blue tint. Her hair reaches the middle of her back and she wears it in a pony tail, making it appear shorter. She wears her uniform, a long-sleeved button up shirt worn beneath a pinafore style dress with a pleated skirt that extends below the knee, a bow at the collar, a wide belt at the waist, and black, knee-high socks. She also wears sneakers.