Kurumi is considerably younger looking for her age (37 years old) like her mother Saiki Kumi and has a kindly appearance. She sports dark purple eyes and short black hair that is styled exactly like Kusuo's, the only difference being that her hair is slightly longer. In the one-shot volume of the series, she sported long black hair which reached her waist and was tied into a ponytail with a ribbon. Kurumi is a kind and gentle mother who also is very weird and excitable