Nemuri is a tall, curvaceous woman with sky-blue eyes that slant downward in the center. She has long, thick, spiky, jet-black hair, layered in varying lengths, the longest reaching below her waist. Her bangs, which reach down to her chin, are divided into three sections: two on the sides and one across her face, which slopes diagonally to the left, between her eyes. 

She is pregnant with twins, but she likes it because it makes her look more attractive and sensual even in her heroine costume.