Momiji Miyabe
Momiji Miyabe is a purple-haired beautiful student at Akagi High School (which Noboru goes to) where she is the school diva. Momiji has a tendency to flirt with Noboru having developed a liking for him. Spoiler Momiji is actually a Golden Werewolf with long yellow hair who can temporarily turn others into werewolves that she controls by biting them. Her family is the patron of the Department of Custody. She has been living alone since her parents are both gone (her father works away from home) which lead her to eventually try to attack the Takagami brothers hoping she could get her father worried and come home. (Source: Wikipedia)