Slender and youthful, Nemu is a well-endowed woman with green eyes. Her black hair is pulled back into a long braid, with slightly parted bangs. Her uniform consists of a short black kimono, which extends to mid-thigh. She wears a traditional wide white obi, fastened with a red cord. Nemu is a very shy, withdrawn, and introverted individual. She is rarely seen smiling or showing any joy. She is the lieutenant of the 12th Division serving under Captain Mayuri Kurotsuchi.