『Rosalie』

A ghost girl who died about 200 years previously at the age of 15. The daughter of a merchant who had fallen on hard times, she committed suicide after learning that her father wanted to sell her off as a prostitute. Her restless ghost began haunting the merchant's estate, which later became the site for Halkara's new energy drink factory. After being caught by Azusa, Halkara and Beelzebub, she is- with some effort- relocated to Azusa's house and joins her adopted family.