Muse gets her orders from Eros, and is the direct influence on Noelle in Eros' goal to stop Noelle from becoming an angel. She is very polite, ending almost every sentence with "de gozaimasu". She likes Eros, but hardly ever sees him because of the job she has to do. She also has the ability to change her shape into different objects, such as a giant pen, a mirror, a pillow, etc.