Yūma is shorter than the average for her age range. She has white hair and red eyes. It is later revealed that her hair was originally black and her body had stopped growing since she was 11 years old because it was made out of trion, thus explained her short stature[5]. She wears a blue suit top and gray bottoms traditional of Japanese high school students. When not in her trion body or school uniform, she usually wears a purple hoodie with a paw symbol and the text "UMA"