Mumei has golden-brown eyes and long, brown ponytail hair with a pair of feathers atop her head. She dresses in a brown cloak secured with a ribbon. Mumei also wears gloves that are fingerless on her index and pinky fingers. She has a belt wrapped around her waist with a lantern, pouch, and small dagger around it. Below her outfit is a pleated skirt. She has leggings with her right leg reaching above her thighs and the left leg below her thighs, and wears brown boots.